MagickCore 6.9.13-11
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/script/license.php %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44
45/*
46 Include declarations.
47*/
48#include "magick/studio.h"
49#include "magick/annotate.h"
50#include "magick/artifact.h"
51#include "magick/blob.h"
52#include "magick/cache.h"
53#include "magick/cache-private.h"
54#include "magick/cache-view.h"
55#include "magick/channel.h"
56#include "magick/color.h"
57#include "magick/color-private.h"
58#include "magick/colorspace.h"
59#include "magick/colorspace-private.h"
60#include "magick/composite.h"
61#include "magick/composite-private.h"
62#include "magick/constitute.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/enhance.h"
66#include "magick/exception.h"
67#include "magick/exception-private.h"
68#include "magick/gem.h"
69#include "magick/geometry.h"
70#include "magick/image-private.h"
71#include "magick/list.h"
72#include "magick/log.h"
73#include "magick/magick.h"
74#include "magick/memory-private.h"
75#include "magick/monitor.h"
76#include "magick/monitor-private.h"
77#include "magick/option.h"
78#include "magick/paint.h"
79#include "magick/pixel-accessor.h"
80#include "magick/pixel-private.h"
81#include "magick/property.h"
82#include "magick/resample.h"
83#include "magick/resample-private.h"
84#include "magick/resource_.h"
85#include "magick/splay-tree.h"
86#include "magick/string_.h"
87#include "magick/string-private.h"
88#include "magick/thread-private.h"
89#include "magick/token.h"
90#include "magick/transform.h"
91#include "magick/utility.h"
92
93/*
94 Define declarations.
95*/
96#define AntialiasThreshold (1.0/3.0)
97#define BezierQuantum 200
98#define PrimitiveExtentPad 4296.0
99#define MaxBezierCoordinates 67108864
100#define ThrowPointExpectedException(image,token) \
101{ \
102 (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104 status=MagickFalse; \
105 break; \
106}
107
108/*
109 Typedef declarations.
110*/
111typedef struct _EdgeInfo
112{
114 bounds;
115
116 double
117 scanline;
118
120 *points;
121
122 size_t
123 number_points;
124
125 ssize_t
126 direction;
127
128 MagickBooleanType
129 ghostline;
130
131 size_t
132 highwater;
133} EdgeInfo;
134
135typedef struct _ElementInfo
136{
137 double
138 cx,
139 cy,
140 major,
141 minor,
142 angle;
144
145typedef struct _MVGInfo
146{
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
157 point;
158
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
166 *edges;
167
168 size_t
169 number_edges;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
184 point;
185
186 PathInfoCode
187 code;
188} PathInfo;
189
190/*
191 Forward declarations.
192*/
193static Image
194 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195 ExceptionInfo *);
196
197static MagickBooleanType
198 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199 RenderMVGContent(Image *,const DrawInfo *,const size_t),
200 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202 const double,const MagickBooleanType,const MagickBooleanType),
203 TraceBezier(MVGInfo *,const size_t),
204 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210
211static PrimitiveInfo
212 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213
214static ssize_t
215 TracePath(Image *,MVGInfo *,const char *);
216
217/*
218%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219% %
220% %
221% %
222% A c q u i r e D r a w I n f o %
223% %
224% %
225% %
226%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227%
228% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229%
230% The format of the AcquireDrawInfo method is:
231%
232% DrawInfo *AcquireDrawInfo(void)
233%
234*/
235MagickExport DrawInfo *AcquireDrawInfo(void)
236{
238 *draw_info;
239
240 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241 GetDrawInfo((ImageInfo *) NULL,draw_info);
242 return(draw_info);
243}
244
245/*
246%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247% %
248% %
249% %
250% C l o n e D r a w I n f o %
251% %
252% %
253% %
254%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255%
256% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257% is specified, a new DrawInfo structure is created initialized to default
258% values.
259%
260% The format of the CloneDrawInfo method is:
261%
262% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263% const DrawInfo *draw_info)
264%
265% A description of each parameter follows:
266%
267% o image_info: the image info.
268%
269% o draw_info: the draw info.
270%
271*/
272MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273 const DrawInfo *draw_info)
274{
276 *clone_info;
277
278 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279 GetDrawInfo(image_info,clone_info);
280 if (draw_info == (DrawInfo *) NULL)
281 return(clone_info);
282 if (draw_info->id != (char *) NULL)
283 (void) CloneString(&clone_info->id,draw_info->id);
284 if (draw_info->primitive != (char *) NULL)
285 (void) CloneString(&clone_info->primitive,draw_info->primitive);
286 if (draw_info->geometry != (char *) NULL)
287 (void) CloneString(&clone_info->geometry,draw_info->geometry);
288 clone_info->compliance=draw_info->compliance;
289 clone_info->viewbox=draw_info->viewbox;
290 clone_info->affine=draw_info->affine;
291 clone_info->gravity=draw_info->gravity;
292 clone_info->fill=draw_info->fill;
293 clone_info->stroke=draw_info->stroke;
294 clone_info->stroke_width=draw_info->stroke_width;
295 if (draw_info->fill_pattern != (Image *) NULL)
296 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297 &draw_info->fill_pattern->exception);
298 else
299 if (draw_info->tile != (Image *) NULL)
300 clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301 &draw_info->tile->exception);
302 clone_info->tile=NewImageList(); /* tile is deprecated */
303 if (draw_info->stroke_pattern != (Image *) NULL)
304 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305 MagickTrue,&draw_info->stroke_pattern->exception);
306 clone_info->stroke_antialias=draw_info->stroke_antialias;
307 clone_info->text_antialias=draw_info->text_antialias;
308 clone_info->fill_rule=draw_info->fill_rule;
309 clone_info->linecap=draw_info->linecap;
310 clone_info->linejoin=draw_info->linejoin;
311 clone_info->miterlimit=draw_info->miterlimit;
312 clone_info->dash_offset=draw_info->dash_offset;
313 clone_info->decorate=draw_info->decorate;
314 clone_info->compose=draw_info->compose;
315 if (draw_info->text != (char *) NULL)
316 (void) CloneString(&clone_info->text,draw_info->text);
317 if (draw_info->font != (char *) NULL)
318 (void) CloneString(&clone_info->font,draw_info->font);
319 if (draw_info->metrics != (char *) NULL)
320 (void) CloneString(&clone_info->metrics,draw_info->metrics);
321 if (draw_info->family != (char *) NULL)
322 (void) CloneString(&clone_info->family,draw_info->family);
323 clone_info->style=draw_info->style;
324 clone_info->stretch=draw_info->stretch;
325 clone_info->weight=draw_info->weight;
326 if (draw_info->encoding != (char *) NULL)
327 (void) CloneString(&clone_info->encoding,draw_info->encoding);
328 clone_info->pointsize=draw_info->pointsize;
329 clone_info->kerning=draw_info->kerning;
330 clone_info->interline_spacing=draw_info->interline_spacing;
331 clone_info->interword_spacing=draw_info->interword_spacing;
332 clone_info->direction=draw_info->direction;
333 if (draw_info->density != (char *) NULL)
334 (void) CloneString(&clone_info->density,draw_info->density);
335 clone_info->align=draw_info->align;
336 clone_info->undercolor=draw_info->undercolor;
337 clone_info->border_color=draw_info->border_color;
338 if (draw_info->server_name != (char *) NULL)
339 (void) CloneString(&clone_info->server_name,draw_info->server_name);
340 if (draw_info->dash_pattern != (double *) NULL)
341 {
342 ssize_t
343 x;
344
345 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347 sizeof(*clone_info->dash_pattern));
348 if (clone_info->dash_pattern == (double *) NULL)
349 ThrowFatalException(ResourceLimitFatalError,
350 "UnableToAllocateDashPattern");
351 (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352 sizeof(*clone_info->dash_pattern));
353 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354 (x+1)*sizeof(*clone_info->dash_pattern));
355 }
356 clone_info->gradient=draw_info->gradient;
357 if (draw_info->gradient.stops != (StopInfo *) NULL)
358 {
359 size_t
360 number_stops;
361
362 number_stops=clone_info->gradient.number_stops;
363 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364 number_stops,sizeof(*clone_info->gradient.stops));
365 if (clone_info->gradient.stops == (StopInfo *) NULL)
366 ThrowFatalException(ResourceLimitFatalError,
367 "UnableToAllocateDashPattern");
368 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370 }
371 clone_info->bounds=draw_info->bounds;
372 clone_info->fill_opacity=draw_info->fill_opacity;
373 clone_info->stroke_opacity=draw_info->stroke_opacity;
374 clone_info->element_reference=draw_info->element_reference;
375 clone_info->clip_path=draw_info->clip_path;
376 clone_info->clip_units=draw_info->clip_units;
377 if (draw_info->clip_mask != (char *) NULL)
378 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379 if (draw_info->clipping_mask != (Image *) NULL)
380 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381 MagickTrue,&draw_info->clipping_mask->exception);
382 if (draw_info->composite_mask != (Image *) NULL)
383 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384 MagickTrue,&draw_info->composite_mask->exception);
385 clone_info->render=draw_info->render;
386 clone_info->debug=draw_info->debug;
387 return(clone_info);
388}
389
390/*
391%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392% %
393% %
394% %
395+ C o n v e r t P a t h T o P o l y g o n %
396% %
397% %
398% %
399%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400%
401% ConvertPathToPolygon() converts a path to the more efficient sorted
402% rendering form.
403%
404% The format of the ConvertPathToPolygon method is:
405%
406% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407% ExceptionInfo *exception)
408%
409% A description of each parameter follows:
410%
411% o ConvertPathToPolygon() returns the path in a more efficient sorted
412% rendering form of type PolygonInfo.
413%
414% o draw_info: Specifies a pointer to an DrawInfo structure.
415%
416% o path_info: Specifies a pointer to an PathInfo structure.
417%
418% o exception: return any errors or warnings in this structure.
419%
420*/
421
422static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423{
424 ssize_t
425 i;
426
427 if (polygon_info->edges != (EdgeInfo *) NULL)
428 {
429 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430 if (polygon_info->edges[i].points != (PointInfo *) NULL)
431 polygon_info->edges[i].points=(PointInfo *)
432 RelinquishMagickMemory(polygon_info->edges[i].points);
433 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434 polygon_info->edges);
435 }
436 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437}
438
439#if defined(__cplusplus) || defined(c_plusplus)
440extern "C" {
441#endif
442
443static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444{
445#define DrawCompareEdge(p,q) \
446{ \
447 if (((p)-(q)) < 0.0) \
448 return(-1); \
449 if (((p)-(q)) > 0.0) \
450 return(1); \
451}
452
453 const PointInfo
454 *p,
455 *q;
456
457 /*
458 Edge sorting for right-handed coordinate system.
459 */
460 p=((const EdgeInfo *) p_edge)->points;
461 q=((const EdgeInfo *) q_edge)->points;
462 DrawCompareEdge(p[0].y,q[0].y);
463 DrawCompareEdge(p[0].x,q[0].x);
464 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465 (q[1].x-q[0].x));
466 DrawCompareEdge(p[1].y,q[1].y);
467 DrawCompareEdge(p[1].x,q[1].x);
468 return(0);
469}
470
471#if defined(__cplusplus) || defined(c_plusplus)
472}
473#endif
474
475static void LogPolygonInfo(const PolygonInfo *polygon_info)
476{
478 *p;
479
480 ssize_t
481 i,
482 j;
483
484 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485 p=polygon_info->edges;
486 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487 {
488 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489 (double) i);
490 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491 p->direction != MagickFalse ? "down" : "up");
492 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493 p->ghostline != MagickFalse ? "transparent" : "opaque");
494 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496 p->bounds.x2,p->bounds.y2);
497 for (j=0; j < (ssize_t) p->number_points; j++)
498 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499 p->points[j].x,p->points[j].y);
500 p++;
501 }
502 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503}
504
505static void ReversePoints(PointInfo *points,const size_t number_points)
506{
508 point;
509
510 ssize_t
511 i;
512
513 for (i=0; i < (ssize_t) (number_points >> 1); i++)
514 {
515 point=points[i];
516 points[i]=points[number_points-(i+1)];
517 points[number_points-(i+1)]=point;
518 }
519}
520
521static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522 ExceptionInfo *exception)
523{
524 long
525 direction,
526 next_direction;
527
529 point,
530 *points;
531
533 *polygon_info;
534
536 bounds;
537
538 ssize_t
539 i,
540 n;
541
542 MagickBooleanType
543 ghostline;
544
545 size_t
546 edge,
547 number_edges,
548 number_points;
549
550 /*
551 Convert a path to the more efficient sorted rendering form.
552 */
553 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554 if (polygon_info == (PolygonInfo *) NULL)
555 {
556 (void) ThrowMagickException(exception,GetMagickModule(),
557 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558 return((PolygonInfo *) NULL);
559 }
560 number_edges=16;
561 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562 sizeof(*polygon_info->edges));
563 if (polygon_info->edges == (EdgeInfo *) NULL)
564 {
565 (void) ThrowMagickException(exception,GetMagickModule(),
566 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567 return(DestroyPolygonInfo(polygon_info));
568 }
569 (void) memset(polygon_info->edges,0,number_edges*
570 sizeof(*polygon_info->edges));
571 direction=0;
572 edge=0;
573 ghostline=MagickFalse;
574 n=0;
575 number_points=0;
576 points=(PointInfo *) NULL;
577 (void) memset(&point,0,sizeof(point));
578 (void) memset(&bounds,0,sizeof(bounds));
579 polygon_info->edges[edge].number_points=(size_t) n;
580 polygon_info->edges[edge].scanline=0.0;
581 polygon_info->edges[edge].highwater=0;
582 polygon_info->edges[edge].ghostline=ghostline;
583 polygon_info->edges[edge].direction=(ssize_t) direction;
584 polygon_info->edges[edge].points=points;
585 polygon_info->edges[edge].bounds=bounds;
586 polygon_info->number_edges=0;
587 for (i=0; path_info[i].code != EndCode; i++)
588 {
589 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590 (path_info[i].code == GhostlineCode))
591 {
592 /*
593 Move to.
594 */
595 if ((points != (PointInfo *) NULL) && (n >= 2))
596 {
597 if (edge == number_edges)
598 {
599 number_edges<<=1;
600 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601 polygon_info->edges,(size_t) number_edges,
602 sizeof(*polygon_info->edges));
603 if (polygon_info->edges == (EdgeInfo *) NULL)
604 {
605 (void) ThrowMagickException(exception,GetMagickModule(),
606 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607 points=(PointInfo *) RelinquishMagickMemory(points);
608 return(DestroyPolygonInfo(polygon_info));
609 }
610 }
611 polygon_info->edges[edge].number_points=(size_t) n;
612 polygon_info->edges[edge].scanline=(-1.0);
613 polygon_info->edges[edge].highwater=0;
614 polygon_info->edges[edge].ghostline=ghostline;
615 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616 if (direction < 0)
617 ReversePoints(points,(size_t) n);
618 polygon_info->edges[edge].points=points;
619 polygon_info->edges[edge].bounds=bounds;
620 polygon_info->edges[edge].bounds.y1=points[0].y;
621 polygon_info->edges[edge].bounds.y2=points[n-1].y;
622 points=(PointInfo *) NULL;
623 ghostline=MagickFalse;
624 edge++;
625 polygon_info->number_edges=edge;
626 }
627 if (points == (PointInfo *) NULL)
628 {
629 number_points=16;
630 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631 sizeof(*points));
632 if (points == (PointInfo *) NULL)
633 {
634 (void) ThrowMagickException(exception,GetMagickModule(),
635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636 return(DestroyPolygonInfo(polygon_info));
637 }
638 }
639 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640 point=path_info[i].point;
641 points[0]=point;
642 bounds.x1=point.x;
643 bounds.x2=point.x;
644 direction=0;
645 n=1;
646 continue;
647 }
648 /*
649 Line to.
650 */
651 next_direction=((path_info[i].point.y > point.y) ||
652 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653 (path_info[i].point.x > point.x))) ? 1 : -1;
654 if ((points != (PointInfo *) NULL) && (direction != 0) &&
655 (direction != next_direction))
656 {
657 /*
658 New edge.
659 */
660 point=points[n-1];
661 if (edge == number_edges)
662 {
663 number_edges<<=1;
664 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665 polygon_info->edges,(size_t) number_edges,
666 sizeof(*polygon_info->edges));
667 if (polygon_info->edges == (EdgeInfo *) NULL)
668 {
669 (void) ThrowMagickException(exception,GetMagickModule(),
670 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671 points=(PointInfo *) RelinquishMagickMemory(points);
672 return(DestroyPolygonInfo(polygon_info));
673 }
674 }
675 polygon_info->edges[edge].number_points=(size_t) n;
676 polygon_info->edges[edge].scanline=(-1.0);
677 polygon_info->edges[edge].highwater=0;
678 polygon_info->edges[edge].ghostline=ghostline;
679 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680 if (direction < 0)
681 ReversePoints(points,(size_t) n);
682 polygon_info->edges[edge].points=points;
683 polygon_info->edges[edge].bounds=bounds;
684 polygon_info->edges[edge].bounds.y1=points[0].y;
685 polygon_info->edges[edge].bounds.y2=points[n-1].y;
686 polygon_info->number_edges=edge+1;
687 points=(PointInfo *) NULL;
688 number_points=16;
689 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690 sizeof(*points));
691 if (points == (PointInfo *) NULL)
692 {
693 (void) ThrowMagickException(exception,GetMagickModule(),
694 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695 return(DestroyPolygonInfo(polygon_info));
696 }
697 n=1;
698 ghostline=MagickFalse;
699 points[0]=point;
700 bounds.x1=point.x;
701 bounds.x2=point.x;
702 edge++;
703 }
704 direction=next_direction;
705 if (points == (PointInfo *) NULL)
706 continue;
707 if (n == (ssize_t) number_points)
708 {
709 number_points<<=1;
710 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711 sizeof(*points));
712 if (points == (PointInfo *) NULL)
713 {
714 (void) ThrowMagickException(exception,GetMagickModule(),
715 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716 return(DestroyPolygonInfo(polygon_info));
717 }
718 }
719 point=path_info[i].point;
720 points[n]=point;
721 if (point.x < bounds.x1)
722 bounds.x1=point.x;
723 if (point.x > bounds.x2)
724 bounds.x2=point.x;
725 n++;
726 }
727 if (points != (PointInfo *) NULL)
728 {
729 if (n < 2)
730 points=(PointInfo *) RelinquishMagickMemory(points);
731 else
732 {
733 if (edge == number_edges)
734 {
735 number_edges<<=1;
736 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737 polygon_info->edges,(size_t) number_edges,
738 sizeof(*polygon_info->edges));
739 if (polygon_info->edges == (EdgeInfo *) NULL)
740 {
741 (void) ThrowMagickException(exception,GetMagickModule(),
742 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743 return(DestroyPolygonInfo(polygon_info));
744 }
745 }
746 polygon_info->edges[edge].number_points=(size_t) n;
747 polygon_info->edges[edge].scanline=(-1.0);
748 polygon_info->edges[edge].highwater=0;
749 polygon_info->edges[edge].ghostline=ghostline;
750 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751 if (direction < 0)
752 ReversePoints(points,(size_t) n);
753 polygon_info->edges[edge].points=points;
754 polygon_info->edges[edge].bounds=bounds;
755 polygon_info->edges[edge].bounds.y1=points[0].y;
756 polygon_info->edges[edge].bounds.y2=points[n-1].y;
757 points=(PointInfo *) NULL;
758 ghostline=MagickFalse;
759 edge++;
760 polygon_info->number_edges=edge;
761 }
762 }
763 polygon_info->number_edges=edge;
764 polygon_info->number_edges=edge;
765 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
766 polygon_info->number_edges,sizeof(*polygon_info->edges));
767 if (polygon_info->edges == (EdgeInfo *) NULL)
768 {
769 (void) ThrowMagickException(exception,GetMagickModule(),
770 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
771 return(DestroyPolygonInfo(polygon_info));
772 }
773 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
774 {
776 *edge_info;
777
778 edge_info=polygon_info->edges+i;
779 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
780 edge_info->number_points,sizeof(*edge_info->points));
781 if (edge_info->points == (PointInfo *) NULL)
782 {
783 (void) ThrowMagickException(exception,GetMagickModule(),
784 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
785 return(DestroyPolygonInfo(polygon_info));
786 }
787 }
788 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
789 sizeof(*polygon_info->edges),DrawCompareEdges);
790 if ((GetLogEventMask() & DrawEvent) != 0)
791 LogPolygonInfo(polygon_info);
792 return(polygon_info);
793}
794
795/*
796%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
797% %
798% %
799% %
800+ C o n v e r t P r i m i t i v e T o P a t h %
801% %
802% %
803% %
804%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
805%
806% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
807% path structure.
808%
809% The format of the ConvertPrimitiveToPath method is:
810%
811% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
812% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
813%
814% A description of each parameter follows:
815%
816% o ConvertPrimitiveToPath() returns a vector path structure of type
817% PathInfo.
818%
819% o draw_info: a structure of type DrawInfo.
820%
821% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
822%
823%
824*/
825
826static void LogPathInfo(const PathInfo *path_info)
827{
828 const PathInfo
829 *p;
830
831 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
832 for (p=path_info; p->code != EndCode; p++)
833 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
834 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
835 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
836 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
837 "?");
838 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
839}
840
841static PathInfo *ConvertPrimitiveToPath(
842 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
843 ExceptionInfo *exception)
844{
845 MagickBooleanType
846 closed_subpath;
847
849 *path_info;
850
851 PathInfoCode
852 code;
853
855 p,
856 q;
857
858 ssize_t
859 i,
860 n;
861
862 ssize_t
863 coordinates,
864 start;
865
866 magick_unreferenced(draw_info);
867
868 /*
869 Converts a PrimitiveInfo structure into a vector path structure.
870 */
871 switch (primitive_info->primitive)
872 {
873 case PointPrimitive:
874 case ColorPrimitive:
875 case MattePrimitive:
876 case TextPrimitive:
877 case ImagePrimitive:
878 return((PathInfo *) NULL);
879 default:
880 break;
881 }
882 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
883 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
884 sizeof(*path_info));
885 if (path_info == (PathInfo *) NULL)
886 {
887 (void) ThrowMagickException(exception,GetMagickModule(),
888 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
889 return((PathInfo *) NULL);
890 }
891 coordinates=0;
892 closed_subpath=MagickFalse;
893 n=0;
894 p.x=(-1.0);
895 p.y=(-1.0);
896 q.x=(-1.0);
897 q.y=(-1.0);
898 start=0;
899 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
900 {
901 code=LineToCode;
902 if (coordinates <= 0)
903 {
904 /*
905 New subpath.
906 */
907 coordinates=(ssize_t) primitive_info[i].coordinates;
908 p=primitive_info[i].point;
909 start=n;
910 code=MoveToCode;
911 closed_subpath=primitive_info[i].closed_subpath;
912 }
913 coordinates--;
914 if ((code == MoveToCode) || (coordinates <= 0) ||
915 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
916 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
917 {
918 /*
919 Eliminate duplicate points.
920 */
921 path_info[n].code=code;
922 path_info[n].point=primitive_info[i].point;
923 q=primitive_info[i].point;
924 n++;
925 }
926 if (coordinates > 0)
927 continue; /* next point in current subpath */
928 if (closed_subpath != MagickFalse)
929 {
930 closed_subpath=MagickFalse;
931 continue;
932 }
933 /*
934 Mark the p point as open if the subpath is not closed.
935 */
936 path_info[start].code=OpenCode;
937 path_info[n].code=GhostlineCode;
938 path_info[n].point=primitive_info[i].point;
939 n++;
940 path_info[n].code=LineToCode;
941 path_info[n].point=p;
942 n++;
943 }
944 path_info[n].code=EndCode;
945 path_info[n].point.x=0.0;
946 path_info[n].point.y=0.0;
947 if (IsEventLogging() != MagickFalse)
948 LogPathInfo(path_info);
949 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
950 sizeof(*path_info));
951 return(path_info);
952}
953
954/*
955%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
956% %
957% %
958% %
959% D e s t r o y D r a w I n f o %
960% %
961% %
962% %
963%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
964%
965% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
966%
967% The format of the DestroyDrawInfo method is:
968%
969% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
970%
971% A description of each parameter follows:
972%
973% o draw_info: the draw info.
974%
975*/
976MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
977{
978 assert(draw_info != (DrawInfo *) NULL);
979 assert(draw_info->signature == MagickCoreSignature);
980 if (IsEventLogging() != MagickFalse)
981 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
982 if (draw_info->id != (char *) NULL)
983 draw_info->id=DestroyString(draw_info->id);
984 if (draw_info->primitive != (char *) NULL)
985 draw_info->primitive=DestroyString(draw_info->primitive);
986 if (draw_info->text != (char *) NULL)
987 draw_info->text=DestroyString(draw_info->text);
988 if (draw_info->geometry != (char *) NULL)
989 draw_info->geometry=DestroyString(draw_info->geometry);
990 if (draw_info->tile != (Image *) NULL)
991 draw_info->tile=DestroyImage(draw_info->tile);
992 if (draw_info->fill_pattern != (Image *) NULL)
993 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
994 if (draw_info->stroke_pattern != (Image *) NULL)
995 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
996 if (draw_info->font != (char *) NULL)
997 draw_info->font=DestroyString(draw_info->font);
998 if (draw_info->metrics != (char *) NULL)
999 draw_info->metrics=DestroyString(draw_info->metrics);
1000 if (draw_info->family != (char *) NULL)
1001 draw_info->family=DestroyString(draw_info->family);
1002 if (draw_info->encoding != (char *) NULL)
1003 draw_info->encoding=DestroyString(draw_info->encoding);
1004 if (draw_info->density != (char *) NULL)
1005 draw_info->density=DestroyString(draw_info->density);
1006 if (draw_info->server_name != (char *) NULL)
1007 draw_info->server_name=(char *)
1008 RelinquishMagickMemory(draw_info->server_name);
1009 if (draw_info->dash_pattern != (double *) NULL)
1010 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1011 draw_info->dash_pattern);
1012 if (draw_info->gradient.stops != (StopInfo *) NULL)
1013 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1014 draw_info->gradient.stops);
1015 if (draw_info->clip_mask != (char *) NULL)
1016 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1017 if (draw_info->clipping_mask != (Image *) NULL)
1018 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1019 if (draw_info->composite_mask != (Image *) NULL)
1020 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1021 if (draw_info->image_info != (ImageInfo *) NULL)
1022 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1023 draw_info->signature=(~MagickCoreSignature);
1024 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1025 return(draw_info);
1026}
1027
1028/*
1029%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1030% %
1031% %
1032% %
1033% D r a w A f f i n e I m a g e %
1034% %
1035% %
1036% %
1037%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1038%
1039% DrawAffineImage() composites the source over the destination image as
1040% dictated by the affine transform.
1041%
1042% The format of the DrawAffineImage method is:
1043%
1044% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1045% const AffineMatrix *affine)
1046%
1047% A description of each parameter follows:
1048%
1049% o image: the image.
1050%
1051% o source: the source image.
1052%
1053% o affine: the affine transform.
1054%
1055*/
1056
1057static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1058 const double y,const SegmentInfo *edge)
1059{
1060 double
1061 intercept,
1062 z;
1063
1064 double
1065 x;
1066
1068 inverse_edge;
1069
1070 /*
1071 Determine left and right edges.
1072 */
1073 inverse_edge.x1=edge->x1;
1074 inverse_edge.y1=edge->y1;
1075 inverse_edge.x2=edge->x2;
1076 inverse_edge.y2=edge->y2;
1077 z=affine->ry*y+affine->tx;
1078 if (affine->sx >= MagickEpsilon)
1079 {
1080 intercept=(-z/affine->sx);
1081 x=intercept;
1082 if (x > inverse_edge.x1)
1083 inverse_edge.x1=x;
1084 intercept=(-z+(double) image->columns)/affine->sx;
1085 x=intercept;
1086 if (x < inverse_edge.x2)
1087 inverse_edge.x2=x;
1088 }
1089 else
1090 if (affine->sx < -MagickEpsilon)
1091 {
1092 intercept=(-z+(double) image->columns)/affine->sx;
1093 x=intercept;
1094 if (x > inverse_edge.x1)
1095 inverse_edge.x1=x;
1096 intercept=(-z/affine->sx);
1097 x=intercept;
1098 if (x < inverse_edge.x2)
1099 inverse_edge.x2=x;
1100 }
1101 else
1102 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1103 {
1104 inverse_edge.x2=edge->x1;
1105 return(inverse_edge);
1106 }
1107 /*
1108 Determine top and bottom edges.
1109 */
1110 z=affine->sy*y+affine->ty;
1111 if (affine->rx >= MagickEpsilon)
1112 {
1113 intercept=(-z/affine->rx);
1114 x=intercept;
1115 if (x > inverse_edge.x1)
1116 inverse_edge.x1=x;
1117 intercept=(-z+(double) image->rows)/affine->rx;
1118 x=intercept;
1119 if (x < inverse_edge.x2)
1120 inverse_edge.x2=x;
1121 }
1122 else
1123 if (affine->rx < -MagickEpsilon)
1124 {
1125 intercept=(-z+(double) image->rows)/affine->rx;
1126 x=intercept;
1127 if (x > inverse_edge.x1)
1128 inverse_edge.x1=x;
1129 intercept=(-z/affine->rx);
1130 x=intercept;
1131 if (x < inverse_edge.x2)
1132 inverse_edge.x2=x;
1133 }
1134 else
1135 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1136 {
1137 inverse_edge.x2=edge->x2;
1138 return(inverse_edge);
1139 }
1140 return(inverse_edge);
1141}
1142
1143static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1144{
1146 inverse_affine;
1147
1148 double
1149 determinant;
1150
1151 determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1152 affine->ry);
1153 inverse_affine.sx=determinant*affine->sy;
1154 inverse_affine.rx=determinant*(-affine->rx);
1155 inverse_affine.ry=determinant*(-affine->ry);
1156 inverse_affine.sy=determinant*affine->sx;
1157 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1158 inverse_affine.ry;
1159 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1160 inverse_affine.sy;
1161 return(inverse_affine);
1162}
1163
1164MagickExport MagickBooleanType DrawAffineImage(Image *image,
1165 const Image *source,const AffineMatrix *affine)
1166{
1168 inverse_affine;
1169
1170 CacheView
1171 *image_view,
1172 *source_view;
1173
1175 *exception;
1176
1177 MagickBooleanType
1178 status;
1179
1181 zero;
1182
1183 PointInfo
1184 extent[4],
1185 min,
1186 max,
1187 point;
1188
1189 ssize_t
1190 i;
1191
1193 edge;
1194
1195 ssize_t
1196 start,
1197 stop,
1198 y;
1199
1200 /*
1201 Determine bounding box.
1202 */
1203 assert(image != (Image *) NULL);
1204 assert(image->signature == MagickCoreSignature);
1205 assert(source != (const Image *) NULL);
1206 assert(source->signature == MagickCoreSignature);
1207 if (IsEventLogging() != MagickFalse)
1208 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1209 assert(affine != (AffineMatrix *) NULL);
1210 extent[0].x=0.0;
1211 extent[0].y=0.0;
1212 extent[1].x=(double) source->columns;
1213 extent[1].y=0.0;
1214 extent[2].x=(double) source->columns;
1215 extent[2].y=(double) source->rows;
1216 extent[3].x=0.0;
1217 extent[3].y=(double) source->rows;
1218 for (i=0; i < 4; i++)
1219 {
1220 point=extent[i];
1221 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1222 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1223 }
1224 min=extent[0];
1225 max=extent[0];
1226 for (i=1; i < 4; i++)
1227 {
1228 if (min.x > extent[i].x)
1229 min.x=extent[i].x;
1230 if (min.y > extent[i].y)
1231 min.y=extent[i].y;
1232 if (max.x < extent[i].x)
1233 max.x=extent[i].x;
1234 if (max.y < extent[i].y)
1235 max.y=extent[i].y;
1236 }
1237 /*
1238 Affine transform image.
1239 */
1240 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1241 return(MagickFalse);
1242 status=MagickTrue;
1243 edge.x1=min.x;
1244 edge.y1=min.y;
1245 edge.x2=max.x;
1246 edge.y2=max.y;
1247 inverse_affine=InverseAffineMatrix(affine);
1248 if (edge.y1 < 0.0)
1249 edge.y1=0.0;
1250 if (edge.y2 > (image->rows-1.0))
1251 edge.y2=image->rows-1.0;
1252 GetMagickPixelPacket(image,&zero);
1253 exception=(&image->exception);
1254 start=CastDoubleToLong(ceil(edge.y1-0.5));
1255 stop=CastDoubleToLong(floor(edge.y2+0.5));
1256 source_view=AcquireVirtualCacheView(source,exception);
1257 image_view=AcquireAuthenticCacheView(image,exception);
1258#if defined(MAGICKCORE_OPENMP_SUPPORT)
1259 #pragma omp parallel for schedule(static) shared(status) \
1260 magick_number_threads(source,image,stop-start,1)
1261#endif
1262 for (y=start; y <= stop; y++)
1263 {
1264 IndexPacket
1265 *magick_restrict indexes;
1266
1268 composite,
1269 pixel;
1270
1271 PointInfo
1272 point;
1273
1275 *magick_restrict q;
1276
1278 inverse_edge;
1279
1280 ssize_t
1281 x,
1282 x_offset;
1283
1284 if (status == MagickFalse)
1285 continue;
1286 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1287 if (inverse_edge.x2 < inverse_edge.x1)
1288 continue;
1289 if (inverse_edge.x1 < 0.0)
1290 inverse_edge.x1=0.0;
1291 if (inverse_edge.x2 > image->columns-1.0)
1292 inverse_edge.x2=image->columns-1.0;
1293 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1294 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1295 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1296 if (q == (PixelPacket *) NULL)
1297 continue;
1298 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1299 pixel=zero;
1300 composite=zero;
1301 x_offset=0;
1302 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1303 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1304 {
1305 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1306 inverse_affine.tx;
1307 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1308 inverse_affine.ty;
1309 status=InterpolateMagickPixelPacket(source,source_view,
1310 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1311 if (status == MagickFalse)
1312 break;
1313 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1314 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1315 composite.opacity,&composite);
1316 SetPixelPacket(image,&composite,q,indexes+x_offset);
1317 x_offset++;
1318 q++;
1319 }
1320 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1321 status=MagickFalse;
1322 }
1323 source_view=DestroyCacheView(source_view);
1324 image_view=DestroyCacheView(image_view);
1325 return(status);
1326}
1327
1328/*
1329%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1330% %
1331% %
1332% %
1333+ D r a w B o u n d i n g R e c t a n g l e s %
1334% %
1335% %
1336% %
1337%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1338%
1339% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1340% is only useful for developers debugging the rendering algorithm.
1341%
1342% The format of the DrawBoundingRectangles method is:
1343%
1344% MagickBooleanType DrawBoundingRectangles(Image *image,
1345% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1346%
1347% A description of each parameter follows:
1348%
1349% o image: the image.
1350%
1351% o draw_info: the draw info.
1352%
1353% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1354%
1355*/
1356
1357static MagickBooleanType DrawBoundingRectangles(Image *image,
1358 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1359{
1360 double
1361 mid;
1362
1363 DrawInfo
1364 *clone_info;
1365
1366 MagickStatusType
1367 status;
1368
1369 PointInfo
1370 end,
1371 resolution,
1372 start;
1373
1375 primitive_info[6];
1376
1377 ssize_t
1378 i;
1379
1381 bounds;
1382
1383 ssize_t
1384 coordinates;
1385
1386 (void) memset(primitive_info,0,sizeof(primitive_info));
1387 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1388 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1389 if (status == MagickFalse)
1390 {
1391 clone_info=DestroyDrawInfo(clone_info);
1392 return(MagickFalse);
1393 }
1394 resolution.x=96.0;
1395 resolution.y=96.0;
1396 if (clone_info->density != (char *) NULL)
1397 {
1399 geometry_info;
1400
1401 MagickStatusType
1402 flags;
1403
1404 flags=ParseGeometry(clone_info->density,&geometry_info);
1405 if ((flags & RhoValue) != 0)
1406 resolution.x=geometry_info.rho;
1407 resolution.y=resolution.x;
1408 if ((flags & SigmaValue) != 0)
1409 resolution.y=geometry_info.sigma;
1410 }
1411 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1412 clone_info->stroke_width/2.0;
1413 bounds.x1=0.0;
1414 bounds.y1=0.0;
1415 bounds.x2=0.0;
1416 bounds.y2=0.0;
1417 if (polygon_info != (PolygonInfo *) NULL)
1418 {
1419 bounds=polygon_info->edges[0].bounds;
1420 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1421 {
1422 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1423 bounds.x1=polygon_info->edges[i].bounds.x1;
1424 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1425 bounds.y1=polygon_info->edges[i].bounds.y1;
1426 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1427 bounds.x2=polygon_info->edges[i].bounds.x2;
1428 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1429 bounds.y2=polygon_info->edges[i].bounds.y2;
1430 }
1431 bounds.x1-=mid;
1432 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1433 image->columns ? (double) image->columns-1 : bounds.x1;
1434 bounds.y1-=mid;
1435 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1436 image->rows ? (double) image->rows-1 : bounds.y1;
1437 bounds.x2+=mid;
1438 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1439 image->columns ? (double) image->columns-1 : bounds.x2;
1440 bounds.y2+=mid;
1441 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1442 image->rows ? (double) image->rows-1 : bounds.y2;
1443 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1444 {
1445 if (polygon_info->edges[i].direction != 0)
1446 status=QueryColorDatabase("#f00",&clone_info->stroke,
1447 &image->exception);
1448 else
1449 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1450 &image->exception);
1451 if (status == MagickFalse)
1452 break;
1453 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1454 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1455 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1456 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1457 primitive_info[0].primitive=RectanglePrimitive;
1458 status&=TraceRectangle(primitive_info,start,end);
1459 primitive_info[0].method=ReplaceMethod;
1460 coordinates=(ssize_t) primitive_info[0].coordinates;
1461 primitive_info[coordinates].primitive=UndefinedPrimitive;
1462 status=DrawPrimitive(image,clone_info,primitive_info);
1463 if (status == MagickFalse)
1464 break;
1465 }
1466 if (i < (ssize_t) polygon_info->number_edges)
1467 {
1468 clone_info=DestroyDrawInfo(clone_info);
1469 return(status == 0 ? MagickFalse : MagickTrue);
1470 }
1471 }
1472 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1473 if (status == MagickFalse)
1474 {
1475 clone_info=DestroyDrawInfo(clone_info);
1476 return(MagickFalse);
1477 }
1478 start.x=(double) (bounds.x1-mid);
1479 start.y=(double) (bounds.y1-mid);
1480 end.x=(double) (bounds.x2+mid);
1481 end.y=(double) (bounds.y2+mid);
1482 primitive_info[0].primitive=RectanglePrimitive;
1483 status&=TraceRectangle(primitive_info,start,end);
1484 primitive_info[0].method=ReplaceMethod;
1485 coordinates=(ssize_t) primitive_info[0].coordinates;
1486 primitive_info[coordinates].primitive=UndefinedPrimitive;
1487 status=DrawPrimitive(image,clone_info,primitive_info);
1488 clone_info=DestroyDrawInfo(clone_info);
1489 return(status == 0 ? MagickFalse : MagickTrue);
1490}
1491
1492/*
1493%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1494% %
1495% %
1496% %
1497% D r a w C l i p P a t h %
1498% %
1499% %
1500% %
1501%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1502%
1503% DrawClipPath() draws the clip path on the image mask.
1504%
1505% The format of the DrawClipPath method is:
1506%
1507% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1508% const char *id)
1509%
1510% A description of each parameter follows:
1511%
1512% o image: the image.
1513%
1514% o draw_info: the draw info.
1515%
1516% o id: the clip path id.
1517%
1518*/
1519MagickExport MagickBooleanType DrawClipPath(Image *image,
1520 const DrawInfo *draw_info,const char *id)
1521{
1522 const char
1523 *clip_path;
1524
1525 Image
1526 *clipping_mask;
1527
1528 MagickBooleanType
1529 status;
1530
1531 clip_path=GetImageArtifact(image,id);
1532 if (clip_path == (const char *) NULL)
1533 return(MagickFalse);
1534 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1535 &image->exception);
1536 if (clipping_mask == (Image *) NULL)
1537 return(MagickFalse);
1538 status=SetImageClipMask(image,clipping_mask);
1539 clipping_mask=DestroyImage(clipping_mask);
1540 return(status);
1541}
1542
1543/*
1544%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1545% %
1546% %
1547% %
1548% D r a w C l i p p i n g M a s k %
1549% %
1550% %
1551% %
1552%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1553%
1554% DrawClippingMask() draws the clip path and returns it as an image clipping
1555% mask.
1556%
1557% The format of the DrawClippingMask method is:
1558%
1559% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1560% const char *id,const char *clip_path,ExceptionInfo *exception)
1561%
1562% A description of each parameter follows:
1563%
1564% o image: the image.
1565%
1566% o draw_info: the draw info.
1567%
1568% o id: the clip path id.
1569%
1570% o clip_path: the clip path.
1571%
1572% o exception: return any errors or warnings in this structure.
1573%
1574*/
1575static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1576 const char *id,const char *clip_path,ExceptionInfo *exception)
1577{
1578 DrawInfo
1579 *clone_info;
1580
1581 Image
1582 *clip_mask;
1583
1584 MagickStatusType
1585 status;
1586
1587 /*
1588 Draw a clip path.
1589 */
1590 assert(image != (Image *) NULL);
1591 assert(image->signature == MagickCoreSignature);
1592 assert(draw_info != (const DrawInfo *) NULL);
1593 if (IsEventLogging() != MagickFalse)
1594 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1595 clip_mask=AcquireImage((const ImageInfo *) NULL);
1596 status=SetImageExtent(clip_mask,image->columns,image->rows);
1597 if (status == MagickFalse)
1598 return(DestroyImage(clip_mask));
1599 status=SetImageClipMask(image,(Image *) NULL);
1600 status=QueryColorCompliance("#0000",AllCompliance,
1601 &clip_mask->background_color,exception);
1602 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1603 status=SetImageBackgroundColor(clip_mask);
1604 if (draw_info->debug != MagickFalse)
1605 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1606 id);
1607 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1608 (void) CloneString(&clone_info->primitive,clip_path);
1609 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1610 exception);
1611 if (clone_info->clip_mask != (char *) NULL)
1612 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1613 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1614 exception);
1615 clone_info->stroke_width=0.0;
1616 clone_info->opacity=OpaqueOpacity;
1617 clone_info->clip_path=MagickTrue;
1618 status=RenderMVGContent(clip_mask,clone_info,0);
1619 clone_info=DestroyDrawInfo(clone_info);
1620 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1621 if (draw_info->compliance != SVGCompliance)
1622 status&=NegateImage(clip_mask,MagickFalse);
1623 if (status == MagickFalse)
1624 clip_mask=DestroyImage(clip_mask);
1625 if (draw_info->debug != MagickFalse)
1626 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1627 return(clip_mask);
1628}
1629
1630/*
1631%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1632% %
1633% %
1634% %
1635% D r a w C o m p o s i t e M a s k %
1636% %
1637% %
1638% %
1639%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1640%
1641% DrawCompositeMask() draws the mask path and returns it as an image mask.
1642%
1643% The format of the DrawCompositeMask method is:
1644%
1645% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1646% const char *id,const char *mask_path,ExceptionInfo *exception)
1647%
1648% A description of each parameter follows:
1649%
1650% o image: the image.
1651%
1652% o draw_info: the draw info.
1653%
1654% o id: the mask path id.
1655%
1656% o mask_path: the mask path.
1657%
1658% o exception: return any errors or warnings in this structure.
1659%
1660*/
1661static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1662 const char *id,const char *mask_path,ExceptionInfo *exception)
1663{
1664 Image
1665 *composite_mask;
1666
1667 DrawInfo
1668 *clone_info;
1669
1670 MagickStatusType
1671 status;
1672
1673 /*
1674 Draw a mask path.
1675 */
1676 assert(image != (Image *) NULL);
1677 assert(image->signature == MagickCoreSignature);
1678 assert(draw_info != (const DrawInfo *) NULL);
1679 if (IsEventLogging() != MagickFalse)
1680 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1681 composite_mask=AcquireImage((const ImageInfo *) NULL);
1682 status=SetImageExtent(composite_mask,image->columns,image->rows);
1683 if (status == MagickFalse)
1684 return(DestroyImage(composite_mask));
1685 status=SetImageMask(image,(Image *) NULL);
1686 status=QueryColorCompliance("#0000",AllCompliance,
1687 &composite_mask->background_color,exception);
1688 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1689 (void) SetImageBackgroundColor(composite_mask);
1690 if (draw_info->debug != MagickFalse)
1691 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1692 id);
1693 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1694 (void) CloneString(&clone_info->primitive,mask_path);
1695 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1696 exception);
1697 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1698 exception);
1699 clone_info->stroke_width=0.0;
1700 clone_info->opacity=OpaqueOpacity;
1701 status=RenderMVGContent(composite_mask,clone_info,0);
1702 clone_info=DestroyDrawInfo(clone_info);
1703 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1704 status&=NegateImage(composite_mask,MagickFalse);
1705 if (status == MagickFalse)
1706 composite_mask=DestroyImage(composite_mask);
1707 if (draw_info->debug != MagickFalse)
1708 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1709 return(composite_mask);
1710}
1711
1712/*
1713%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1714% %
1715% %
1716% %
1717+ D r a w D a s h P o l y g o n %
1718% %
1719% %
1720% %
1721%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1722%
1723% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1724% image while respecting the dash offset and dash pattern attributes.
1725%
1726% The format of the DrawDashPolygon method is:
1727%
1728% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1729% const PrimitiveInfo *primitive_info,Image *image)
1730%
1731% A description of each parameter follows:
1732%
1733% o draw_info: the draw info.
1734%
1735% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1736%
1737% o image: the image.
1738%
1739%
1740*/
1741static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1742 const PrimitiveInfo *primitive_info,Image *image)
1743{
1744 double
1745 dx,
1746 dy,
1747 length,
1748 maximum_length,
1749 offset,
1750 scale,
1751 total_length;
1752
1753 DrawInfo
1754 *clone_info;
1755
1756 MagickStatusType
1757 status;
1758
1760 *dash_polygon;
1761
1762 ssize_t
1763 i;
1764
1765 size_t
1766 number_vertices;
1767
1768 ssize_t
1769 j,
1770 n;
1771
1772 assert(draw_info != (const DrawInfo *) NULL);
1773 if (draw_info->debug != MagickFalse)
1774 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1775 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1776 number_vertices=(size_t) i;
1777 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1778 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1779 if (dash_polygon == (PrimitiveInfo *) NULL)
1780 {
1781 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1782 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1783 return(MagickFalse);
1784 }
1785 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1786 sizeof(*dash_polygon));
1787 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1788 clone_info->miterlimit=0;
1789 dash_polygon[0]=primitive_info[0];
1790 scale=ExpandAffine(&draw_info->affine);
1791 length=scale*draw_info->dash_pattern[0];
1792 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793 scale*draw_info->dash_offset : 0.0;
1794 j=1;
1795 for (n=0; offset > 0.0; j=0)
1796 {
1797 if (draw_info->dash_pattern[n] <= 0.0)
1798 break;
1799 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800 if (offset > length)
1801 {
1802 offset-=length;
1803 n++;
1804 length=scale*draw_info->dash_pattern[n];
1805 continue;
1806 }
1807 if (offset < length)
1808 {
1809 length-=offset;
1810 offset=0.0;
1811 break;
1812 }
1813 offset=0.0;
1814 n++;
1815 }
1816 status=MagickTrue;
1817 maximum_length=0.0;
1818 total_length=0.0;
1819 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820 {
1821 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823 maximum_length=hypot(dx,dy);
1824 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825 continue;
1826 if (fabs(length) < MagickEpsilon)
1827 {
1828 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829 n++;
1830 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831 n=0;
1832 length=scale*draw_info->dash_pattern[n];
1833 }
1834 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835 {
1836 total_length+=length;
1837 if ((n & 0x01) != 0)
1838 {
1839 dash_polygon[0]=primitive_info[0];
1840 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1841 total_length*PerceptibleReciprocal(maximum_length));
1842 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1843 total_length*PerceptibleReciprocal(maximum_length));
1844 j=1;
1845 }
1846 else
1847 {
1848 if ((j+1) > (ssize_t) number_vertices)
1849 break;
1850 dash_polygon[j]=primitive_info[i-1];
1851 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1852 total_length*PerceptibleReciprocal(maximum_length));
1853 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1854 total_length*PerceptibleReciprocal(maximum_length));
1855 dash_polygon[j].coordinates=1;
1856 j++;
1857 dash_polygon[0].coordinates=(size_t) j;
1858 dash_polygon[j].primitive=UndefinedPrimitive;
1859 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1860 if (status == MagickFalse)
1861 break;
1862 }
1863 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1864 n++;
1865 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1866 n=0;
1867 length=scale*draw_info->dash_pattern[n];
1868 }
1869 length-=(maximum_length-total_length);
1870 if ((n & 0x01) != 0)
1871 continue;
1872 dash_polygon[j]=primitive_info[i];
1873 dash_polygon[j].coordinates=1;
1874 j++;
1875 }
1876 if ((status != MagickFalse) && (total_length < maximum_length) &&
1877 ((n & 0x01) == 0) && (j > 1))
1878 {
1879 dash_polygon[j]=primitive_info[i-1];
1880 dash_polygon[j].point.x+=MagickEpsilon;
1881 dash_polygon[j].point.y+=MagickEpsilon;
1882 dash_polygon[j].coordinates=1;
1883 j++;
1884 dash_polygon[0].coordinates=(size_t) j;
1885 dash_polygon[j].primitive=UndefinedPrimitive;
1886 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1887 }
1888 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1889 clone_info=DestroyDrawInfo(clone_info);
1890 if (draw_info->debug != MagickFalse)
1891 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1892 return(status != 0 ? MagickTrue : MagickFalse);
1893}
1894
1895/*
1896%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1897% %
1898% %
1899% %
1900% D r a w G r a d i e n t I m a g e %
1901% %
1902% %
1903% %
1904%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1905%
1906% DrawGradientImage() draws a linear gradient on the image.
1907%
1908% The format of the DrawGradientImage method is:
1909%
1910% MagickBooleanType DrawGradientImage(Image *image,
1911% const DrawInfo *draw_info)
1912%
1913% A description of each parameter follows:
1914%
1915% o image: the image.
1916%
1917% o draw_info: the draw info.
1918%
1919*/
1920
1921static inline double GetStopColorOffset(const GradientInfo *gradient,
1922 const ssize_t x,const ssize_t y)
1923{
1924 switch (gradient->type)
1925 {
1926 case UndefinedGradient:
1927 case LinearGradient:
1928 {
1929 double
1930 gamma,
1931 length,
1932 offset,
1933 scale;
1934
1935 PointInfo
1936 p,
1937 q;
1938
1939 const SegmentInfo
1940 *gradient_vector;
1941
1942 gradient_vector=(&gradient->gradient_vector);
1943 p.x=gradient_vector->x2-gradient_vector->x1;
1944 p.y=gradient_vector->y2-gradient_vector->y1;
1945 q.x=(double) x-gradient_vector->x1;
1946 q.y=(double) y-gradient_vector->y1;
1947 length=sqrt(q.x*q.x+q.y*q.y);
1948 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1949 gamma=PerceptibleReciprocal(gamma);
1950 scale=p.x*q.x+p.y*q.y;
1951 offset=gamma*scale*length;
1952 return(offset);
1953 }
1954 case RadialGradient:
1955 {
1956 PointInfo
1957 v;
1958
1959 if (gradient->spread == RepeatSpread)
1960 {
1961 v.x=(double) x-gradient->center.x;
1962 v.y=(double) y-gradient->center.y;
1963 return(sqrt(v.x*v.x+v.y*v.y));
1964 }
1965 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1966 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1967 gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1968 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1969 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1970 gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1971 return(sqrt(v.x*v.x+v.y*v.y));
1972 }
1973 }
1974 return(0.0);
1975}
1976
1977MagickExport MagickBooleanType DrawGradientImage(Image *image,
1978 const DrawInfo *draw_info)
1979{
1980 CacheView
1981 *image_view;
1982
1983 const GradientInfo
1984 *gradient;
1985
1986 const SegmentInfo
1987 *gradient_vector;
1988
1989 double
1990 length;
1991
1993 *exception;
1994
1995 MagickBooleanType
1996 status;
1997
1999 zero;
2000
2001 PointInfo
2002 point;
2003
2005 bounding_box;
2006
2007 ssize_t
2008 height,
2009 y;
2010
2011 /*
2012 Draw linear or radial gradient on image.
2013 */
2014 assert(image != (Image *) NULL);
2015 assert(image->signature == MagickCoreSignature);
2016 assert(draw_info != (const DrawInfo *) NULL);
2017 if (IsEventLogging() != MagickFalse)
2018 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2019 gradient=(&draw_info->gradient);
2020 gradient_vector=(&gradient->gradient_vector);
2021 point.x=gradient_vector->x2-gradient_vector->x1;
2022 point.y=gradient_vector->y2-gradient_vector->y1;
2023 length=sqrt(point.x*point.x+point.y*point.y);
2024 bounding_box=gradient->bounding_box;
2025 status=MagickTrue;
2026 exception=(&image->exception);
2027 GetMagickPixelPacket(image,&zero);
2028 image_view=AcquireAuthenticCacheView(image,exception);
2029 height=(size_t) (bounding_box.y+bounding_box.height);
2030#if defined(MAGICKCORE_OPENMP_SUPPORT)
2031 #pragma omp parallel for schedule(static) shared(status) \
2032 magick_number_threads(image,image,height,1)
2033#endif
2034 for (y=bounding_box.y; y < (ssize_t) height; y++)
2035 {
2036 double
2037 alpha,
2038 offset;
2039
2041 composite,
2042 pixel;
2043
2044 IndexPacket
2045 *magick_restrict indexes;
2046
2048 *magick_restrict q;
2049
2050 ssize_t
2051 i,
2052 j,
2053 width,
2054 x;
2055
2056 if (status == MagickFalse)
2057 continue;
2058 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2059 bounding_box.width,1,exception);
2060 if (q == (PixelPacket *) NULL)
2061 {
2062 status=MagickFalse;
2063 continue;
2064 }
2065 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2066 pixel=zero;
2067 composite=zero;
2068 offset=GetStopColorOffset(gradient,0,y);
2069 if (gradient->type != RadialGradient)
2070 offset*=PerceptibleReciprocal(length);
2071 width=(size_t) (bounding_box.x+bounding_box.width);
2072 for (x=bounding_box.x; x < (ssize_t) width; x++)
2073 {
2074 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2075 switch (gradient->spread)
2076 {
2077 case UndefinedSpread:
2078 case PadSpread:
2079 {
2080 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2081 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2082 {
2083 offset=GetStopColorOffset(gradient,x,y);
2084 if (gradient->type != RadialGradient)
2085 offset*=PerceptibleReciprocal(length);
2086 }
2087 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2088 if (offset < gradient->stops[i].offset)
2089 break;
2090 if ((offset < 0.0) || (i == 0))
2091 composite=gradient->stops[0].color;
2092 else
2093 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2094 composite=gradient->stops[gradient->number_stops-1].color;
2095 else
2096 {
2097 j=i;
2098 i--;
2099 alpha=(offset-gradient->stops[i].offset)/
2100 (gradient->stops[j].offset-gradient->stops[i].offset);
2101 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2102 &gradient->stops[j].color,alpha,&composite);
2103 }
2104 break;
2105 }
2106 case ReflectSpread:
2107 {
2108 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2109 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2110 {
2111 offset=GetStopColorOffset(gradient,x,y);
2112 if (gradient->type != RadialGradient)
2113 offset*=PerceptibleReciprocal(length);
2114 }
2115 if (offset < 0.0)
2116 offset=(-offset);
2117 if ((ssize_t) fmod(offset,2.0) == 0)
2118 offset=fmod(offset,1.0);
2119 else
2120 offset=1.0-fmod(offset,1.0);
2121 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2122 if (offset < gradient->stops[i].offset)
2123 break;
2124 if (i == 0)
2125 composite=gradient->stops[0].color;
2126 else
2127 if (i == (ssize_t) gradient->number_stops)
2128 composite=gradient->stops[gradient->number_stops-1].color;
2129 else
2130 {
2131 j=i;
2132 i--;
2133 alpha=(offset-gradient->stops[i].offset)/
2134 (gradient->stops[j].offset-gradient->stops[i].offset);
2135 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2136 &gradient->stops[j].color,alpha,&composite);
2137 }
2138 break;
2139 }
2140 case RepeatSpread:
2141 {
2142 double
2143 repeat;
2144
2145 MagickBooleanType
2146 antialias;
2147
2148 antialias=MagickFalse;
2149 repeat=0.0;
2150 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2151 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2152 {
2153 offset=GetStopColorOffset(gradient,x,y);
2154 if (gradient->type == LinearGradient)
2155 {
2156 repeat=fmod(offset,length);
2157 if (repeat < 0.0)
2158 repeat=length-fmod(-repeat,length);
2159 else
2160 repeat=fmod(offset,length);
2161 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2162 MagickTrue : MagickFalse;
2163 offset=PerceptibleReciprocal(length)*repeat;
2164 }
2165 else
2166 {
2167 repeat=fmod(offset,(double) gradient->radius);
2168 if (repeat < 0.0)
2169 repeat=gradient->radius-fmod(-repeat,
2170 (double) gradient->radius);
2171 else
2172 repeat=fmod(offset,(double) gradient->radius);
2173 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2174 MagickFalse;
2175 offset=repeat*PerceptibleReciprocal(gradient->radius);
2176 }
2177 }
2178 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2179 if (offset < gradient->stops[i].offset)
2180 break;
2181 if (i == 0)
2182 composite=gradient->stops[0].color;
2183 else
2184 if (i == (ssize_t) gradient->number_stops)
2185 composite=gradient->stops[gradient->number_stops-1].color;
2186 else
2187 {
2188 j=i;
2189 i--;
2190 alpha=(offset-gradient->stops[i].offset)/
2191 (gradient->stops[j].offset-gradient->stops[i].offset);
2192 if (antialias != MagickFalse)
2193 {
2194 if (gradient->type == LinearGradient)
2195 alpha=length-repeat;
2196 else
2197 alpha=gradient->radius-repeat;
2198 i=0;
2199 j=(ssize_t) gradient->number_stops-1L;
2200 }
2201 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2202 &gradient->stops[j].color,alpha,&composite);
2203 }
2204 break;
2205 }
2206 }
2207 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2208 pixel.opacity,&pixel);
2209 SetPixelPacket(image,&pixel,q,indexes+x);
2210 q++;
2211 }
2212 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2213 status=MagickFalse;
2214 }
2215 image_view=DestroyCacheView(image_view);
2216 return(status);
2217}
2218
2219/*
2220%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2221% %
2222% %
2223% %
2224% D r a w I m a g e %
2225% %
2226% %
2227% %
2228%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2229%
2230% DrawImage() draws a graphic primitive on your image. The primitive
2231% may be represented as a string or filename. Precede the filename with an
2232% "at" sign (@) and the contents of the file are drawn on the image. You
2233% can affect how text is drawn by setting one or more members of the draw
2234% info structure.
2235%
2236% The format of the DrawImage method is:
2237%
2238% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2239%
2240% A description of each parameter follows:
2241%
2242% o image: the image.
2243%
2244% o draw_info: the draw info.
2245%
2246*/
2247
2248static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2249 const double pad)
2250{
2251 char
2252 **text = (char **) NULL;
2253
2254 double
2255 extent;
2256
2257 size_t
2258 quantum;
2259
2260 ssize_t
2261 i;
2262
2263 /*
2264 Check if there is enough storage for drawing primitives.
2265 */
2266 quantum=sizeof(**mvg_info->primitive_info);
2267 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2268 if (extent <= (double) *mvg_info->extent)
2269 return(MagickTrue);
2270 if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2271 return(MagickFalse);
2272 if (mvg_info->offset > 0)
2273 {
2274 text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2275 if (text == (char **) NULL)
2276 return(MagickFalse);
2277 for (i=0; i < mvg_info->offset; i++)
2278 text[i]=(*mvg_info->primitive_info)[i].text;
2279 }
2280 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2281 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2282 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2283 {
2284 if (text != (char **) NULL)
2285 text=(char **) RelinquishMagickMemory(text);
2286 *mvg_info->extent=(size_t) extent;
2287 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2288 {
2289 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2290 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2291 }
2292 return(MagickTrue);
2293 }
2294 /*
2295 Reallocation failed, allocate a primitive to facilitate unwinding.
2296 */
2297 if (text != (char **) NULL)
2298 {
2299 for (i=0; i < mvg_info->offset; i++)
2300 if (text[i] != (char *) NULL)
2301 text[i]=DestroyString(text[i]);
2302 text=(char **) RelinquishMagickMemory(text);
2303 }
2304 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2305 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2306 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2307 (PrimitiveExtentPad+1)*quantum);
2308 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2309 quantum));
2310 *mvg_info->extent=1;
2311 mvg_info->offset=0;
2312 return(MagickFalse);
2313}
2314
2315static inline double GetDrawValue(const char *magick_restrict string,
2316 char **magick_restrict sentinel)
2317{
2318 char
2319 **magick_restrict q;
2320
2321 double
2322 value;
2323
2324 q=sentinel;
2325 value=InterpretLocaleValue(string,q);
2326 sentinel=q;
2327 return(value);
2328}
2329
2330static int MVGMacroCompare(const void *target,const void *source)
2331{
2332 const char
2333 *p,
2334 *q;
2335
2336 p=(const char *) target;
2337 q=(const char *) source;
2338 return(strcmp(p,q));
2339}
2340
2341static SplayTreeInfo *GetMVGMacros(const char *primitive)
2342{
2343 char
2344 *macro,
2345 *token;
2346
2347 const char
2348 *q;
2349
2350 size_t
2351 extent;
2352
2354 *macros;
2355
2356 /*
2357 Scan graphic primitives for definitions and classes.
2358 */
2359 if (primitive == (const char *) NULL)
2360 return((SplayTreeInfo *) NULL);
2361 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2362 RelinquishMagickMemory);
2363 macro=AcquireString(primitive);
2364 token=AcquireString(primitive);
2365 extent=strlen(token)+MagickPathExtent;
2366 for (q=primitive; *q != '\0'; )
2367 {
2368 if (GetNextToken(q,&q,extent,token) < 1)
2369 break;
2370 if (*token == '\0')
2371 break;
2372 if (LocaleCompare("push",token) == 0)
2373 {
2374 const char
2375 *end,
2376 *start;
2377
2378 (void) GetNextToken(q,&q,extent,token);
2379 if (*q == '"')
2380 {
2381 char
2382 name[MagickPathExtent];
2383
2384 const char
2385 *p;
2386
2387 ssize_t
2388 n;
2389
2390 /*
2391 Named macro (e.g. push graphic-context "wheel").
2392 */
2393 (void) GetNextToken(q,&q,extent,token);
2394 start=q;
2395 end=q;
2396 (void) CopyMagickString(name,token,MagickPathExtent);
2397 n=1;
2398 for (p=q; *p != '\0'; )
2399 {
2400 if (GetNextToken(p,&p,extent,token) < 1)
2401 break;
2402 if (*token == '\0')
2403 break;
2404 if (LocaleCompare(token,"pop") == 0)
2405 {
2406 end=p-strlen(token)-1;
2407 n--;
2408 }
2409 if (LocaleCompare(token,"push") == 0)
2410 n++;
2411 if ((n == 0) && (end > start))
2412 {
2413 /*
2414 Extract macro.
2415 */
2416 (void) GetNextToken(p,&p,extent,token);
2417 (void) CopyMagickString(macro,start,(size_t) (end-start));
2418 (void) AddValueToSplayTree(macros,ConstantString(name),
2419 ConstantString(macro));
2420 break;
2421 }
2422 }
2423 }
2424 }
2425 }
2426 token=DestroyString(token);
2427 macro=DestroyString(macro);
2428 return(macros);
2429}
2430
2431static inline MagickBooleanType IsPoint(const char *point)
2432{
2433 char
2434 *p;
2435
2436 double
2437 value;
2438
2439 value=GetDrawValue(point,&p);
2440 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2441 MagickTrue);
2442}
2443
2444static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2445 const PointInfo point)
2446{
2447 primitive_info->coordinates=1;
2448 primitive_info->closed_subpath=MagickFalse;
2449 primitive_info->point=point;
2450 return(MagickTrue);
2451}
2452
2453static MagickBooleanType RenderMVGContent(Image *image,
2454 const DrawInfo *draw_info,const size_t depth)
2455{
2456#define RenderImageTag "Render/Image"
2457
2459 affine,
2460 current;
2461
2462 char
2463 key[2*MaxTextExtent],
2464 keyword[MaxTextExtent],
2465 geometry[MaxTextExtent],
2466 name[MaxTextExtent],
2467 *next_token,
2468 pattern[MaxTextExtent],
2469 *primitive,
2470 *token;
2471
2472 const char
2473 *p,
2474 *q;
2475
2476 double
2477 angle,
2478 coordinates,
2479 cursor,
2480 factor,
2481 primitive_extent;
2482
2483 DrawInfo
2484 *clone_info,
2485 **graphic_context;
2486
2487 MagickBooleanType
2488 proceed;
2489
2490 MagickStatusType
2491 status;
2492
2493 MVGInfo
2494 mvg_info;
2495
2496 PointInfo
2497 point;
2498
2500 start_color;
2501
2503 *primitive_info;
2504
2505 PrimitiveType
2506 primitive_type;
2507
2509 bounds;
2510
2511 size_t
2512 extent,
2513 number_points;
2514
2516 *macros;
2517
2518 ssize_t
2519 defsDepth,
2520 i,
2521 j,
2522 k,
2523 n,
2524 symbolDepth,
2525 x;
2526
2528 metrics;
2529
2530 assert(image != (Image *) NULL);
2531 assert(image->signature == MagickCoreSignature);
2532 assert(draw_info != (DrawInfo *) NULL);
2533 assert(draw_info->signature == MagickCoreSignature);
2534 if (IsEventLogging() != MagickFalse)
2535 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2536 if (depth > MagickMaxRecursionDepth)
2537 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2538 image->filename);
2539 if ((draw_info->primitive == (char *) NULL) ||
2540 (*draw_info->primitive == '\0'))
2541 return(MagickFalse);
2542 if (draw_info->debug != MagickFalse)
2543 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2544 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2545 return(MagickFalse);
2546 if (image->matte == MagickFalse)
2547 {
2548 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2549 if (status == MagickFalse)
2550 return(MagickFalse);
2551 }
2552 primitive=(char *) NULL;
2553 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2554 (*(draw_info->primitive+1) != '-') && (depth == 0))
2555 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2556 else
2557 primitive=AcquireString(draw_info->primitive);
2558 if (primitive == (char *) NULL)
2559 return(MagickFalse);
2560 primitive_extent=(double) strlen(primitive);
2561 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2562 n=0;
2563 /*
2564 Allocate primitive info memory.
2565 */
2566 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2567 if (graphic_context == (DrawInfo **) NULL)
2568 {
2569 primitive=DestroyString(primitive);
2570 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2571 image->filename);
2572 }
2573 number_points=(size_t) PrimitiveExtentPad;
2574 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2575 (number_points+1),sizeof(*primitive_info));
2576 if (primitive_info == (PrimitiveInfo *) NULL)
2577 {
2578 primitive=DestroyString(primitive);
2579 for ( ; n >= 0; n--)
2580 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2581 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2582 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2583 image->filename);
2584 }
2585 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2586 sizeof(*primitive_info));
2587 (void) memset(&mvg_info,0,sizeof(mvg_info));
2588 mvg_info.primitive_info=(&primitive_info);
2589 mvg_info.extent=(&number_points);
2590 mvg_info.exception=(&image->exception);
2591 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2592 graphic_context[n]->viewbox=image->page;
2593 if ((image->page.width == 0) || (image->page.height == 0))
2594 {
2595 graphic_context[n]->viewbox.width=image->columns;
2596 graphic_context[n]->viewbox.height=image->rows;
2597 }
2598 token=AcquireString(primitive);
2599 extent=strlen(token)+MaxTextExtent;
2600 cursor=0.0;
2601 defsDepth=0;
2602 symbolDepth=0;
2603 macros=GetMVGMacros(primitive);
2604 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2605 for (q=primitive; *q != '\0'; )
2606 {
2607 /*
2608 Interpret graphic primitive.
2609 */
2610 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2611 break;
2612 if (*keyword == '\0')
2613 break;
2614 if (*keyword == '#')
2615 {
2616 /*
2617 Comment.
2618 */
2619 while ((*q != '\n') && (*q != '\0'))
2620 q++;
2621 continue;
2622 }
2623 p=q-strlen(keyword)-1;
2624 primitive_type=UndefinedPrimitive;
2625 current=graphic_context[n]->affine;
2626 GetAffineMatrix(&affine);
2627 *token='\0';
2628 switch (*keyword)
2629 {
2630 case ';':
2631 break;
2632 case 'a':
2633 case 'A':
2634 {
2635 if (LocaleCompare("affine",keyword) == 0)
2636 {
2637 (void) GetNextToken(q,&q,extent,token);
2638 affine.sx=GetDrawValue(token,&next_token);
2639 if (token == next_token)
2640 ThrowPointExpectedException(image,token);
2641 (void) GetNextToken(q,&q,extent,token);
2642 if (*token == ',')
2643 (void) GetNextToken(q,&q,extent,token);
2644 affine.rx=GetDrawValue(token,&next_token);
2645 if (token == next_token)
2646 ThrowPointExpectedException(image,token);
2647 (void) GetNextToken(q,&q,extent,token);
2648 if (*token == ',')
2649 (void) GetNextToken(q,&q,extent,token);
2650 affine.ry=GetDrawValue(token,&next_token);
2651 if (token == next_token)
2652 ThrowPointExpectedException(image,token);
2653 (void) GetNextToken(q,&q,extent,token);
2654 if (*token == ',')
2655 (void) GetNextToken(q,&q,extent,token);
2656 affine.sy=GetDrawValue(token,&next_token);
2657 if (token == next_token)
2658 ThrowPointExpectedException(image,token);
2659 (void) GetNextToken(q,&q,extent,token);
2660 if (*token == ',')
2661 (void) GetNextToken(q,&q,extent,token);
2662 affine.tx=GetDrawValue(token,&next_token);
2663 if (token == next_token)
2664 ThrowPointExpectedException(image,token);
2665 (void) GetNextToken(q,&q,extent,token);
2666 if (*token == ',')
2667 (void) GetNextToken(q,&q,extent,token);
2668 affine.ty=GetDrawValue(token,&next_token);
2669 if (token == next_token)
2670 ThrowPointExpectedException(image,token);
2671 break;
2672 }
2673 if (LocaleCompare("arc",keyword) == 0)
2674 {
2675 primitive_type=ArcPrimitive;
2676 break;
2677 }
2678 status=MagickFalse;
2679 break;
2680 }
2681 case 'b':
2682 case 'B':
2683 {
2684 if (LocaleCompare("bezier",keyword) == 0)
2685 {
2686 primitive_type=BezierPrimitive;
2687 break;
2688 }
2689 if (LocaleCompare("border-color",keyword) == 0)
2690 {
2691 (void) GetNextToken(q,&q,extent,token);
2692 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2693 &image->exception);
2694 break;
2695 }
2696 status=MagickFalse;
2697 break;
2698 }
2699 case 'c':
2700 case 'C':
2701 {
2702 if (LocaleCompare("class",keyword) == 0)
2703 {
2704 const char
2705 *mvg_class;
2706
2707 (void) GetNextToken(q,&q,extent,token);
2708 if ((*token == '\0') || (*token == ';'))
2709 {
2710 status=MagickFalse;
2711 break;
2712 }
2713 /*
2714 Identify recursion.
2715 */
2716 for (i=0; i < n; i++)
2717 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2718 break;
2719 if (i < n)
2720 break;
2721 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2722 if ((graphic_context[n]->render != MagickFalse) &&
2723 (mvg_class != (const char *) NULL) && (p > primitive))
2724 {
2725 char
2726 *elements;
2727
2728 ssize_t
2729 offset;
2730
2731 /*
2732 Inject class elements in stream.
2733 */
2734 offset=(ssize_t) (p-primitive);
2735 elements=AcquireString(primitive);
2736 elements[offset]='\0';
2737 (void) ConcatenateString(&elements,mvg_class);
2738 (void) ConcatenateString(&elements,"\n");
2739 (void) ConcatenateString(&elements,q);
2740 primitive=DestroyString(primitive);
2741 primitive=elements;
2742 q=primitive+offset;
2743 }
2744 break;
2745 }
2746 if (LocaleCompare("clip-path",keyword) == 0)
2747 {
2748 const char
2749 *clip_path;
2750
2751 /*
2752 Take a node from within the MVG document, and duplicate it here.
2753 */
2754 (void) GetNextToken(q,&q,extent,token);
2755 if (*token == '\0')
2756 {
2757 status=MagickFalse;
2758 break;
2759 }
2760 (void) CloneString(&graphic_context[n]->clip_mask,token);
2761 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2762 if (clip_path != (const char *) NULL)
2763 {
2764 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2765 graphic_context[n]->clipping_mask=
2766 DestroyImage(graphic_context[n]->clipping_mask);
2767 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2768 graphic_context[n],token,clip_path,&image->exception);
2769 if (graphic_context[n]->compliance != SVGCompliance)
2770 {
2771 const char
2772 *clip_path;
2773
2774 clip_path=(const char *) GetValueFromSplayTree(macros,
2775 graphic_context[n]->clip_mask);
2776 if (clip_path != (const char *) NULL)
2777 (void) SetImageArtifact(image,
2778 graphic_context[n]->clip_mask,clip_path);
2779 status&=DrawClipPath(image,graphic_context[n],
2780 graphic_context[n]->clip_mask);
2781 }
2782 }
2783 break;
2784 }
2785 if (LocaleCompare("clip-rule",keyword) == 0)
2786 {
2787 ssize_t
2788 fill_rule;
2789
2790 (void) GetNextToken(q,&q,extent,token);
2791 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2792 token);
2793 if (fill_rule == -1)
2794 {
2795 status=MagickFalse;
2796 break;
2797 }
2798 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2799 break;
2800 }
2801 if (LocaleCompare("clip-units",keyword) == 0)
2802 {
2803 ssize_t
2804 clip_units;
2805
2806 (void) GetNextToken(q,&q,extent,token);
2807 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2808 token);
2809 if (clip_units == -1)
2810 {
2811 status=MagickFalse;
2812 break;
2813 }
2814 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2815 if (clip_units == ObjectBoundingBox)
2816 {
2817 GetAffineMatrix(&current);
2818 affine.sx=draw_info->bounds.x2;
2819 affine.sy=draw_info->bounds.y2;
2820 affine.tx=draw_info->bounds.x1;
2821 affine.ty=draw_info->bounds.y1;
2822 break;
2823 }
2824 break;
2825 }
2826 if (LocaleCompare("circle",keyword) == 0)
2827 {
2828 primitive_type=CirclePrimitive;
2829 break;
2830 }
2831 if (LocaleCompare("color",keyword) == 0)
2832 {
2833 primitive_type=ColorPrimitive;
2834 break;
2835 }
2836 if (LocaleCompare("compliance",keyword) == 0)
2837 {
2838 /*
2839 MVG compliance associates a clipping mask with an image; SVG
2840 compliance associates a clipping mask with a graphics context.
2841 */
2842 (void) GetNextToken(q,&q,extent,token);
2843 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2844 MagickComplianceOptions,MagickFalse,token);
2845 break;
2846 }
2847 if (LocaleCompare("currentColor",keyword) == 0)
2848 {
2849 (void) GetNextToken(q,&q,extent,token);
2850 break;
2851 }
2852 status=MagickFalse;
2853 break;
2854 }
2855 case 'd':
2856 case 'D':
2857 {
2858 if (LocaleCompare("decorate",keyword) == 0)
2859 {
2860 ssize_t
2861 decorate;
2862
2863 (void) GetNextToken(q,&q,extent,token);
2864 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2865 token);
2866 if (decorate == -1)
2867 {
2868 status=MagickFalse;
2869 break;
2870 }
2871 graphic_context[n]->decorate=(DecorationType) decorate;
2872 break;
2873 }
2874 if (LocaleCompare("density",keyword) == 0)
2875 {
2876 (void) GetNextToken(q,&q,extent,token);
2877 (void) CloneString(&graphic_context[n]->density,token);
2878 break;
2879 }
2880 if (LocaleCompare("direction",keyword) == 0)
2881 {
2882 ssize_t
2883 direction;
2884
2885 (void) GetNextToken(q,&q,extent,token);
2886 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2887 token);
2888 if (direction == -1)
2889 status=MagickFalse;
2890 else
2891 graphic_context[n]->direction=(DirectionType) direction;
2892 break;
2893 }
2894 status=MagickFalse;
2895 break;
2896 }
2897 case 'e':
2898 case 'E':
2899 {
2900 if (LocaleCompare("ellipse",keyword) == 0)
2901 {
2902 primitive_type=EllipsePrimitive;
2903 break;
2904 }
2905 if (LocaleCompare("encoding",keyword) == 0)
2906 {
2907 (void) GetNextToken(q,&q,extent,token);
2908 (void) CloneString(&graphic_context[n]->encoding,token);
2909 break;
2910 }
2911 status=MagickFalse;
2912 break;
2913 }
2914 case 'f':
2915 case 'F':
2916 {
2917 if (LocaleCompare("fill",keyword) == 0)
2918 {
2919 const char
2920 *mvg_class;
2921
2922 (void) GetNextToken(q,&q,extent,token);
2923 if (graphic_context[n]->clip_path != MagickFalse)
2924 break;
2925 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2926 if (mvg_class != (const char *) NULL)
2927 {
2928 (void) DrawPatternPath(image,draw_info,mvg_class,
2929 &graphic_context[n]->fill_pattern);
2930 break;
2931 }
2932 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2933 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2934 {
2935 (void) DrawPatternPath(image,draw_info,token,
2936 &graphic_context[n]->fill_pattern);
2937 break;
2938 }
2939 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2940 &image->exception);
2941 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2942 graphic_context[n]->fill.opacity=ClampToQuantum(
2943 graphic_context[n]->fill_opacity);
2944 break;
2945 }
2946 if (LocaleCompare("fill-opacity",keyword) == 0)
2947 {
2948 double
2949 opacity;
2950
2951 (void) GetNextToken(q,&q,extent,token);
2952 if (graphic_context[n]->clip_path != MagickFalse)
2953 break;
2954 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2955 opacity=MagickMin(MagickMax(factor*
2956 GetDrawValue(token,&next_token),0.0),1.0);
2957 if (token == next_token)
2958 ThrowPointExpectedException(image,token);
2959 if (graphic_context[n]->compliance == SVGCompliance)
2960 graphic_context[n]->fill_opacity*=(1.0-opacity);
2961 else
2962 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2963 graphic_context[n]->fill_opacity)*(1.0-opacity);
2964 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2965 graphic_context[n]->fill.opacity=(Quantum)
2966 graphic_context[n]->fill_opacity;
2967 else
2968 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2969 QuantumRange*(1.0-opacity));
2970 break;
2971 }
2972 if (LocaleCompare("fill-rule",keyword) == 0)
2973 {
2974 ssize_t
2975 fill_rule;
2976
2977 (void) GetNextToken(q,&q,extent,token);
2978 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2979 token);
2980 if (fill_rule == -1)
2981 {
2982 status=MagickFalse;
2983 break;
2984 }
2985 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2986 break;
2987 }
2988 if (LocaleCompare("font",keyword) == 0)
2989 {
2990 (void) GetNextToken(q,&q,extent,token);
2991 (void) CloneString(&graphic_context[n]->font,token);
2992 if (LocaleCompare("none",token) == 0)
2993 graphic_context[n]->font=(char *) RelinquishMagickMemory(
2994 graphic_context[n]->font);
2995 break;
2996 }
2997 if (LocaleCompare("font-family",keyword) == 0)
2998 {
2999 (void) GetNextToken(q,&q,extent,token);
3000 (void) CloneString(&graphic_context[n]->family,token);
3001 break;
3002 }
3003 if (LocaleCompare("font-size",keyword) == 0)
3004 {
3005 (void) GetNextToken(q,&q,extent,token);
3006 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3007 if (token == next_token)
3008 ThrowPointExpectedException(image,token);
3009 break;
3010 }
3011 if (LocaleCompare("font-stretch",keyword) == 0)
3012 {
3013 ssize_t
3014 stretch;
3015
3016 (void) GetNextToken(q,&q,extent,token);
3017 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3018 if (stretch == -1)
3019 {
3020 status=MagickFalse;
3021 break;
3022 }
3023 graphic_context[n]->stretch=(StretchType) stretch;
3024 break;
3025 }
3026 if (LocaleCompare("font-style",keyword) == 0)
3027 {
3028 ssize_t
3029 style;
3030
3031 (void) GetNextToken(q,&q,extent,token);
3032 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3033 if (style == -1)
3034 {
3035 status=MagickFalse;
3036 break;
3037 }
3038 graphic_context[n]->style=(StyleType) style;
3039 break;
3040 }
3041 if (LocaleCompare("font-weight",keyword) == 0)
3042 {
3043 ssize_t
3044 weight;
3045
3046 (void) GetNextToken(q,&q,extent,token);
3047 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3048 if (weight == -1)
3049 weight=(ssize_t) StringToUnsignedLong(token);
3050 graphic_context[n]->weight=(size_t) weight;
3051 break;
3052 }
3053 status=MagickFalse;
3054 break;
3055 }
3056 case 'g':
3057 case 'G':
3058 {
3059 if (LocaleCompare("gradient-units",keyword) == 0)
3060 {
3061 (void) GetNextToken(q,&q,extent,token);
3062 break;
3063 }
3064 if (LocaleCompare("gravity",keyword) == 0)
3065 {
3066 ssize_t
3067 gravity;
3068
3069 (void) GetNextToken(q,&q,extent,token);
3070 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3071 if (gravity == -1)
3072 {
3073 status=MagickFalse;
3074 break;
3075 }
3076 graphic_context[n]->gravity=(GravityType) gravity;
3077 break;
3078 }
3079 status=MagickFalse;
3080 break;
3081 }
3082 case 'i':
3083 case 'I':
3084 {
3085 if (LocaleCompare("image",keyword) == 0)
3086 {
3087 ssize_t
3088 compose;
3089
3090 primitive_type=ImagePrimitive;
3091 (void) GetNextToken(q,&q,extent,token);
3092 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3093 if (compose == -1)
3094 {
3095 status=MagickFalse;
3096 break;
3097 }
3098 graphic_context[n]->compose=(CompositeOperator) compose;
3099 break;
3100 }
3101 if (LocaleCompare("interline-spacing",keyword) == 0)
3102 {
3103 (void) GetNextToken(q,&q,extent,token);
3104 graphic_context[n]->interline_spacing=GetDrawValue(token,
3105 &next_token);
3106 if (token == next_token)
3107 ThrowPointExpectedException(image,token);
3108 break;
3109 }
3110 if (LocaleCompare("interword-spacing",keyword) == 0)
3111 {
3112 (void) GetNextToken(q,&q,extent,token);
3113 graphic_context[n]->interword_spacing=GetDrawValue(token,
3114 &next_token);
3115 if (token == next_token)
3116 ThrowPointExpectedException(image,token);
3117 break;
3118 }
3119 status=MagickFalse;
3120 break;
3121 }
3122 case 'k':
3123 case 'K':
3124 {
3125 if (LocaleCompare("kerning",keyword) == 0)
3126 {
3127 (void) GetNextToken(q,&q,extent,token);
3128 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3129 if (token == next_token)
3130 ThrowPointExpectedException(image,token);
3131 break;
3132 }
3133 status=MagickFalse;
3134 break;
3135 }
3136 case 'l':
3137 case 'L':
3138 {
3139 if (LocaleCompare("letter-spacing",keyword) == 0)
3140 {
3141 (void) GetNextToken(q,&q,extent,token);
3142 if (IsPoint(token) == MagickFalse)
3143 break;
3144 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3145 clone_info->text=AcquireString(" ");
3146 status&=GetTypeMetrics(image,clone_info,&metrics);
3147 graphic_context[n]->kerning=metrics.width*
3148 GetDrawValue(token,&next_token);
3149 clone_info=DestroyDrawInfo(clone_info);
3150 if (token == next_token)
3151 ThrowPointExpectedException(image,token);
3152 break;
3153 }
3154 if (LocaleCompare("line",keyword) == 0)
3155 {
3156 primitive_type=LinePrimitive;
3157 break;
3158 }
3159 status=MagickFalse;
3160 break;
3161 }
3162 case 'm':
3163 case 'M':
3164 {
3165 if (LocaleCompare("mask",keyword) == 0)
3166 {
3167 const char
3168 *mask_path;
3169
3170 /*
3171 Take a node from within the MVG document, and duplicate it here.
3172 */
3173 (void) GetNextToken(q,&q,extent,token);
3174 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3175 if (mask_path != (const char *) NULL)
3176 {
3177 if (graphic_context[n]->composite_mask != (Image *) NULL)
3178 graphic_context[n]->composite_mask=
3179 DestroyImage(graphic_context[n]->composite_mask);
3180 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3181 graphic_context[n],token,mask_path,&image->exception);
3182 if (graphic_context[n]->compliance != SVGCompliance)
3183 status=SetImageMask(image,graphic_context[n]->composite_mask);
3184 }
3185 break;
3186 }
3187 if (LocaleCompare("matte",keyword) == 0)
3188 {
3189 primitive_type=MattePrimitive;
3190 break;
3191 }
3192 status=MagickFalse;
3193 break;
3194 }
3195 case 'o':
3196 case 'O':
3197 {
3198 if (LocaleCompare("offset",keyword) == 0)
3199 {
3200 (void) GetNextToken(q,&q,extent,token);
3201 break;
3202 }
3203 if (LocaleCompare("opacity",keyword) == 0)
3204 {
3205 double
3206 opacity;
3207
3208 (void) GetNextToken(q,&q,extent,token);
3209 if (graphic_context[n]->clip_path != MagickFalse)
3210 break;
3211 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3212 opacity=1.0-MagickMin(MagickMax(factor*
3213 GetDrawValue(token,&next_token),0.0),1.0);
3214 if (token == next_token)
3215 ThrowPointExpectedException(image,token);
3216 if (graphic_context[n]->compliance == SVGCompliance)
3217 {
3218 graphic_context[n]->fill_opacity*=opacity;
3219 graphic_context[n]->stroke_opacity*=opacity;
3220 }
3221 else
3222 {
3223 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3224 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3225 opacity;
3226 }
3227 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3228 {
3229 graphic_context[n]->fill.opacity=
3230 graphic_context[n]->fill_opacity;
3231 graphic_context[n]->stroke.opacity=
3232 graphic_context[n]->stroke_opacity;
3233 }
3234 else
3235 {
3236 graphic_context[n]->fill.opacity=(MagickRealType)
3237 ClampToQuantum((double) QuantumRange*opacity);
3238 graphic_context[n]->stroke.opacity=(MagickRealType)
3239 ClampToQuantum((double) QuantumRange*opacity);
3240 }
3241 break;
3242 }
3243 status=MagickFalse;
3244 break;
3245 }
3246 case 'p':
3247 case 'P':
3248 {
3249 if (LocaleCompare("path",keyword) == 0)
3250 {
3251 primitive_type=PathPrimitive;
3252 break;
3253 }
3254 if (LocaleCompare("point",keyword) == 0)
3255 {
3256 primitive_type=PointPrimitive;
3257 break;
3258 }
3259 if (LocaleCompare("polyline",keyword) == 0)
3260 {
3261 primitive_type=PolylinePrimitive;
3262 break;
3263 }
3264 if (LocaleCompare("polygon",keyword) == 0)
3265 {
3266 primitive_type=PolygonPrimitive;
3267 break;
3268 }
3269 if (LocaleCompare("pop",keyword) == 0)
3270 {
3271 if (GetNextToken(q,&q,extent,token) < 1)
3272 break;
3273 if (LocaleCompare("class",token) == 0)
3274 break;
3275 if (LocaleCompare("clip-path",token) == 0)
3276 break;
3277 if (LocaleCompare("defs",token) == 0)
3278 {
3279 defsDepth--;
3280 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3281 MagickTrue;
3282 break;
3283 }
3284 if (LocaleCompare("gradient",token) == 0)
3285 break;
3286 if (LocaleCompare("graphic-context",token) == 0)
3287 {
3288 if (n <= 0)
3289 {
3290 (void) ThrowMagickException(&image->exception,
3291 GetMagickModule(),DrawError,
3292 "UnbalancedGraphicContextPushPop","`%s'",token);
3293 status=MagickFalse;
3294 n=0;
3295 break;
3296 }
3297 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3298 (graphic_context[n]->compliance != SVGCompliance))
3299 if (LocaleCompare(graphic_context[n]->clip_mask,
3300 graphic_context[n-1]->clip_mask) != 0)
3301 status=SetImageClipMask(image,(Image *) NULL);
3302 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3303 n--;
3304 break;
3305 }
3306 if (LocaleCompare("mask",token) == 0)
3307 break;
3308 if (LocaleCompare("pattern",token) == 0)
3309 break;
3310 if (LocaleCompare("symbol",token) == 0)
3311 {
3312 symbolDepth--;
3313 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3314 MagickTrue;
3315 break;
3316 }
3317 status=MagickFalse;
3318 break;
3319 }
3320 if (LocaleCompare("push",keyword) == 0)
3321 {
3322 if (GetNextToken(q,&q,extent,token) < 1)
3323 break;
3324 if (LocaleCompare("class",token) == 0)
3325 {
3326 /*
3327 Class context.
3328 */
3329 for (p=q; *q != '\0'; )
3330 {
3331 if (GetNextToken(q,&q,extent,token) < 1)
3332 break;
3333 if (LocaleCompare(token,"pop") != 0)
3334 continue;
3335 (void) GetNextToken(q,(const char **) NULL,extent,token);
3336 if (LocaleCompare(token,"class") != 0)
3337 continue;
3338 break;
3339 }
3340 (void) GetNextToken(q,&q,extent,token);
3341 break;
3342 }
3343 if (LocaleCompare("clip-path",token) == 0)
3344 {
3345 (void) GetNextToken(q,&q,extent,token);
3346 for (p=q; *q != '\0'; )
3347 {
3348 if (GetNextToken(q,&q,extent,token) < 1)
3349 break;
3350 if (LocaleCompare(token,"pop") != 0)
3351 continue;
3352 (void) GetNextToken(q,(const char **) NULL,extent,token);
3353 if (LocaleCompare(token,"clip-path") != 0)
3354 continue;
3355 break;
3356 }
3357 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3358 {
3359 status=MagickFalse;
3360 break;
3361 }
3362 (void) GetNextToken(q,&q,extent,token);
3363 break;
3364 }
3365 if (LocaleCompare("defs",token) == 0)
3366 {
3367 defsDepth++;
3368 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3369 MagickTrue;
3370 break;
3371 }
3372 if (LocaleCompare("gradient",token) == 0)
3373 {
3374 char
3375 key[2*MaxTextExtent],
3376 name[MaxTextExtent],
3377 type[MaxTextExtent];
3378
3380 segment;
3381
3382 (void) GetNextToken(q,&q,extent,token);
3383 (void) CopyMagickString(name,token,MaxTextExtent);
3384 (void) GetNextToken(q,&q,extent,token);
3385 (void) CopyMagickString(type,token,MaxTextExtent);
3386 (void) GetNextToken(q,&q,extent,token);
3387 segment.x1=GetDrawValue(token,&next_token);
3388 if (token == next_token)
3389 ThrowPointExpectedException(image,token);
3390 (void) GetNextToken(q,&q,extent,token);
3391 if (*token == ',')
3392 (void) GetNextToken(q,&q,extent,token);
3393 segment.y1=GetDrawValue(token,&next_token);
3394 if (token == next_token)
3395 ThrowPointExpectedException(image,token);
3396 (void) GetNextToken(q,&q,extent,token);
3397 if (*token == ',')
3398 (void) GetNextToken(q,&q,extent,token);
3399 segment.x2=GetDrawValue(token,&next_token);
3400 if (token == next_token)
3401 ThrowPointExpectedException(image,token);
3402 (void) GetNextToken(q,&q,extent,token);
3403 if (*token == ',')
3404 (void) GetNextToken(q,&q,extent,token);
3405 segment.y2=GetDrawValue(token,&next_token);
3406 if (token == next_token)
3407 ThrowPointExpectedException(image,token);
3408 if (LocaleCompare(type,"radial") == 0)
3409 {
3410 (void) GetNextToken(q,&q,extent,token);
3411 if (*token == ',')
3412 (void) GetNextToken(q,&q,extent,token);
3413 }
3414 for (p=q; *q != '\0'; )
3415 {
3416 if (GetNextToken(q,&q,extent,token) < 1)
3417 break;
3418 if (LocaleCompare(token,"pop") != 0)
3419 continue;
3420 (void) GetNextToken(q,(const char **) NULL,extent,token);
3421 if (LocaleCompare(token,"gradient") != 0)
3422 continue;
3423 break;
3424 }
3425 if ((q == (char *) NULL) || (*q == '\0') ||
3426 (p == (char *) NULL) || ((q-4) < p))
3427 {
3428 status=MagickFalse;
3429 break;
3430 }
3431 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3432 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3433 graphic_context[n]->affine.ry*segment.y1+
3434 graphic_context[n]->affine.tx;
3435 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3436 graphic_context[n]->affine.sy*segment.y1+
3437 graphic_context[n]->affine.ty;
3438 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3439 graphic_context[n]->affine.ry*segment.y2+
3440 graphic_context[n]->affine.tx;
3441 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3442 graphic_context[n]->affine.sy*segment.y2+
3443 graphic_context[n]->affine.ty;
3444 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3445 (void) SetImageArtifact(image,key,token);
3446 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3447 (void) SetImageArtifact(image,key,type);
3448 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3449 (void) FormatLocaleString(geometry,MaxTextExtent,
3450 "%gx%g%+.15g%+.15g",
3451 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3452 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3453 bounds.x1,bounds.y1);
3454 (void) SetImageArtifact(image,key,geometry);
3455 (void) GetNextToken(q,&q,extent,token);
3456 break;
3457 }
3458 if (LocaleCompare("graphic-context",token) == 0)
3459 {
3460 n++;
3461 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3462 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3463 if (graphic_context == (DrawInfo **) NULL)
3464 {
3465 (void) ThrowMagickException(&image->exception,
3466 GetMagickModule(),ResourceLimitError,
3467 "MemoryAllocationFailed","`%s'",image->filename);
3468 break;
3469 }
3470 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3471 graphic_context[n-1]);
3472 if (*q == '"')
3473 {
3474 (void) GetNextToken(q,&q,extent,token);
3475 (void) CloneString(&graphic_context[n]->id,token);
3476 }
3477 break;
3478 }
3479 if (LocaleCompare("mask",token) == 0)
3480 {
3481 (void) GetNextToken(q,&q,extent,token);
3482 break;
3483 }
3484 if (LocaleCompare("pattern",token) == 0)
3485 {
3487 bounds;
3488
3489 (void) GetNextToken(q,&q,extent,token);
3490 (void) CopyMagickString(name,token,MaxTextExtent);
3491 (void) GetNextToken(q,&q,extent,token);
3492 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3493 &next_token)-0.5));
3494 if (token == next_token)
3495 ThrowPointExpectedException(image,token);
3496 (void) GetNextToken(q,&q,extent,token);
3497 if (*token == ',')
3498 (void) GetNextToken(q,&q,extent,token);
3499 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3500 &next_token)-0.5));
3501 if (token == next_token)
3502 ThrowPointExpectedException(image,token);
3503 (void) GetNextToken(q,&q,extent,token);
3504 if (*token == ',')
3505 (void) GetNextToken(q,&q,extent,token);
3506 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3507 &next_token)+0.5);
3508 if (token == next_token)
3509 ThrowPointExpectedException(image,token);
3510 (void) GetNextToken(q,&q,extent,token);
3511 if (*token == ',')
3512 (void) GetNextToken(q,&q,extent,token);
3513 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3514 &next_token)+0.5);
3515 if (token == next_token)
3516 ThrowPointExpectedException(image,token);
3517 for (p=q; *q != '\0'; )
3518 {
3519 if (GetNextToken(q,&q,extent,token) < 1)
3520 break;
3521 if (LocaleCompare(token,"pop") != 0)
3522 continue;
3523 (void) GetNextToken(q,(const char **) NULL,extent,token);
3524 if (LocaleCompare(token,"pattern") != 0)
3525 continue;
3526 break;
3527 }
3528 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3529 {
3530 status=MagickFalse;
3531 break;
3532 }
3533 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3534 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3535 (void) SetImageArtifact(image,key,token);
3536 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3537 (void) FormatLocaleString(geometry,MaxTextExtent,
3538 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3539 bounds.height,(double) bounds.x,(double) bounds.y);
3540 (void) SetImageArtifact(image,key,geometry);
3541 (void) GetNextToken(q,&q,extent,token);
3542 break;
3543 }
3544 if (LocaleCompare("symbol",token) == 0)
3545 {
3546 symbolDepth++;
3547 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3548 MagickTrue;
3549 break;
3550 }
3551 status=MagickFalse;
3552 break;
3553 }
3554 status=MagickFalse;
3555 break;
3556 }
3557 case 'r':
3558 case 'R':
3559 {
3560 if (LocaleCompare("rectangle",keyword) == 0)
3561 {
3562 primitive_type=RectanglePrimitive;
3563 break;
3564 }
3565 if (LocaleCompare("rotate",keyword) == 0)
3566 {
3567 (void) GetNextToken(q,&q,extent,token);
3568 angle=GetDrawValue(token,&next_token);
3569 if (token == next_token)
3570 ThrowPointExpectedException(image,token);
3571 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3572 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3573 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3574 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3575 break;
3576 }
3577 if (LocaleCompare("roundRectangle",keyword) == 0)
3578 {
3579 primitive_type=RoundRectanglePrimitive;
3580 break;
3581 }
3582 status=MagickFalse;
3583 break;
3584 }
3585 case 's':
3586 case 'S':
3587 {
3588 if (LocaleCompare("scale",keyword) == 0)
3589 {
3590 (void) GetNextToken(q,&q,extent,token);
3591 affine.sx=GetDrawValue(token,&next_token);
3592 if (token == next_token)
3593 ThrowPointExpectedException(image,token);
3594 (void) GetNextToken(q,&q,extent,token);
3595 if (*token == ',')
3596 (void) GetNextToken(q,&q,extent,token);
3597 affine.sy=GetDrawValue(token,&next_token);
3598 if (token == next_token)
3599 ThrowPointExpectedException(image,token);
3600 break;
3601 }
3602 if (LocaleCompare("skewX",keyword) == 0)
3603 {
3604 (void) GetNextToken(q,&q,extent,token);
3605 angle=GetDrawValue(token,&next_token);
3606 if (token == next_token)
3607 ThrowPointExpectedException(image,token);
3608 affine.ry=sin(DegreesToRadians(angle));
3609 break;
3610 }
3611 if (LocaleCompare("skewY",keyword) == 0)
3612 {
3613 (void) GetNextToken(q,&q,extent,token);
3614 angle=GetDrawValue(token,&next_token);
3615 if (token == next_token)
3616 ThrowPointExpectedException(image,token);
3617 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3618 break;
3619 }
3620 if (LocaleCompare("stop-color",keyword) == 0)
3621 {
3622 GradientType
3623 type;
3624
3626 stop_color;
3627
3628 (void) GetNextToken(q,&q,extent,token);
3629 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3630 type=LinearGradient;
3631 if (draw_info->gradient.type == RadialGradient)
3632 type=RadialGradient;
3633 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3634 start_color=stop_color;
3635 (void) GetNextToken(q,&q,extent,token);
3636 break;
3637 }
3638 if (LocaleCompare("stroke",keyword) == 0)
3639 {
3640 const char
3641 *mvg_class;
3642
3643 (void) GetNextToken(q,&q,extent,token);
3644 if (graphic_context[n]->clip_path != MagickFalse)
3645 break;
3646 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3647 if (mvg_class != (const char *) NULL)
3648 {
3649 (void) DrawPatternPath(image,draw_info,mvg_class,
3650 &graphic_context[n]->stroke_pattern);
3651 break;
3652 }
3653 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3654 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3655 {
3656 (void) DrawPatternPath(image,draw_info,token,
3657 &graphic_context[n]->stroke_pattern);
3658 break;
3659 }
3660 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3661 &image->exception);
3662 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3663 graphic_context[n]->stroke.opacity=ClampToQuantum(
3664 graphic_context[n]->stroke_opacity);
3665 break;
3666 }
3667 if (LocaleCompare("stroke-antialias",keyword) == 0)
3668 {
3669 (void) GetNextToken(q,&q,extent,token);
3670 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3671 MagickTrue : MagickFalse;
3672 break;
3673 }
3674 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3675 {
3676 if (graphic_context[n]->dash_pattern != (double *) NULL)
3677 graphic_context[n]->dash_pattern=(double *)
3678 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3679 if (IsPoint(q) != MagickFalse)
3680 {
3681 const char
3682 *p;
3683
3684 p=q;
3685 (void) GetNextToken(p,&p,extent,token);
3686 if (*token == ',')
3687 (void) GetNextToken(p,&p,extent,token);
3688 for (x=0; IsPoint(token) != MagickFalse; x++)
3689 {
3690 (void) GetNextToken(p,&p,extent,token);
3691 if (*token == ',')
3692 (void) GetNextToken(p,&p,extent,token);
3693 }
3694 graphic_context[n]->dash_pattern=(double *)
3695 AcquireQuantumMemory((size_t) (2*x+2),
3696 sizeof(*graphic_context[n]->dash_pattern));
3697 if (graphic_context[n]->dash_pattern == (double *) NULL)
3698 {
3699 (void) ThrowMagickException(&image->exception,
3700 GetMagickModule(),ResourceLimitError,
3701 "MemoryAllocationFailed","`%s'",image->filename);
3702 status=MagickFalse;
3703 break;
3704 }
3705 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3706 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3707 for (j=0; j < x; j++)
3708 {
3709 (void) GetNextToken(q,&q,extent,token);
3710 if (*token == ',')
3711 (void) GetNextToken(q,&q,extent,token);
3712 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3713 &next_token);
3714 if (token == next_token)
3715 ThrowPointExpectedException(image,token);
3716 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3717 status=MagickFalse;
3718 }
3719 if ((x & 0x01) != 0)
3720 for ( ; j < (2*x); j++)
3721 graphic_context[n]->dash_pattern[j]=
3722 graphic_context[n]->dash_pattern[j-x];
3723 graphic_context[n]->dash_pattern[j]=0.0;
3724 break;
3725 }
3726 (void) GetNextToken(q,&q,extent,token);
3727 break;
3728 }
3729 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3730 {
3731 (void) GetNextToken(q,&q,extent,token);
3732 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3733 if (token == next_token)
3734 ThrowPointExpectedException(image,token);
3735 break;
3736 }
3737 if (LocaleCompare("stroke-linecap",keyword) == 0)
3738 {
3739 ssize_t
3740 linecap;
3741
3742 (void) GetNextToken(q,&q,extent,token);
3743 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3744 if (linecap == -1)
3745 {
3746 status=MagickFalse;
3747 break;
3748 }
3749 graphic_context[n]->linecap=(LineCap) linecap;
3750 break;
3751 }
3752 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3753 {
3754 ssize_t
3755 linejoin;
3756
3757 (void) GetNextToken(q,&q,extent,token);
3758 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3759 token);
3760 if (linejoin == -1)
3761 {
3762 status=MagickFalse;
3763 break;
3764 }
3765 graphic_context[n]->linejoin=(LineJoin) linejoin;
3766 break;
3767 }
3768 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3769 {
3770 (void) GetNextToken(q,&q,extent,token);
3771 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3772 break;
3773 }
3774 if (LocaleCompare("stroke-opacity",keyword) == 0)
3775 {
3776 double
3777 opacity;
3778
3779 (void) GetNextToken(q,&q,extent,token);
3780 if (graphic_context[n]->clip_path != MagickFalse)
3781 break;
3782 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3783 opacity=MagickMin(MagickMax(factor*
3784 GetDrawValue(token,&next_token),0.0),1.0);
3785 if (token == next_token)
3786 ThrowPointExpectedException(image,token);
3787 if (graphic_context[n]->compliance == SVGCompliance)
3788 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3789 else
3790 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3791 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3792 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3793 graphic_context[n]->stroke.opacity=(Quantum)
3794 graphic_context[n]->stroke_opacity;
3795 else
3796 graphic_context[n]->stroke.opacity=ClampToQuantum(
3797 (MagickRealType) QuantumRange*opacity);
3798 break;
3799 }
3800 if (LocaleCompare("stroke-width",keyword) == 0)
3801 {
3802 (void) GetNextToken(q,&q,extent,token);
3803 if (graphic_context[n]->clip_path != MagickFalse)
3804 break;
3805 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3806 if ((token == next_token) ||
3807 (graphic_context[n]->stroke_width < 0.0))
3808 ThrowPointExpectedException(image,token);
3809 break;
3810 }
3811 status=MagickFalse;
3812 break;
3813 }
3814 case 't':
3815 case 'T':
3816 {
3817 if (LocaleCompare("text",keyword) == 0)
3818 {
3819 primitive_type=TextPrimitive;
3820 cursor=0.0;
3821 break;
3822 }
3823 if (LocaleCompare("text-align",keyword) == 0)
3824 {
3825 ssize_t
3826 align;
3827
3828 (void) GetNextToken(q,&q,extent,token);
3829 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3830 if (align == -1)
3831 {
3832 status=MagickFalse;
3833 break;
3834 }
3835 graphic_context[n]->align=(AlignType) align;
3836 break;
3837 }
3838 if (LocaleCompare("text-anchor",keyword) == 0)
3839 {
3840 ssize_t
3841 align;
3842
3843 (void) GetNextToken(q,&q,extent,token);
3844 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3845 if (align == -1)
3846 {
3847 status=MagickFalse;
3848 break;
3849 }
3850 graphic_context[n]->align=(AlignType) align;
3851 break;
3852 }
3853 if (LocaleCompare("text-antialias",keyword) == 0)
3854 {
3855 (void) GetNextToken(q,&q,extent,token);
3856 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3857 MagickTrue : MagickFalse;
3858 break;
3859 }
3860 if (LocaleCompare("text-undercolor",keyword) == 0)
3861 {
3862 (void) GetNextToken(q,&q,extent,token);
3863 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3864 &image->exception);
3865 break;
3866 }
3867 if (LocaleCompare("translate",keyword) == 0)
3868 {
3869 (void) GetNextToken(q,&q,extent,token);
3870 affine.tx=GetDrawValue(token,&next_token);
3871 if (token == next_token)
3872 ThrowPointExpectedException(image,token);
3873 (void) GetNextToken(q,&q,extent,token);
3874 if (*token == ',')
3875 (void) GetNextToken(q,&q,extent,token);
3876 affine.ty=GetDrawValue(token,&next_token);
3877 if (token == next_token)
3878 ThrowPointExpectedException(image,token);
3879 break;
3880 }
3881 status=MagickFalse;
3882 break;
3883 }
3884 case 'u':
3885 case 'U':
3886 {
3887 if (LocaleCompare("use",keyword) == 0)
3888 {
3889 const char
3890 *use;
3891
3892 /*
3893 Get a macro from the MVG document, and "use" it here.
3894 */
3895 (void) GetNextToken(q,&q,extent,token);
3896 use=(const char *) GetValueFromSplayTree(macros,token);
3897 if (use != (const char *) NULL)
3898 {
3899 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3900 (void) CloneString(&clone_info->primitive,use);
3901 status=RenderMVGContent(image,clone_info,depth+1);
3902 clone_info=DestroyDrawInfo(clone_info);
3903 }
3904 break;
3905 }
3906 status=MagickFalse;
3907 break;
3908 }
3909 case 'v':
3910 case 'V':
3911 {
3912 if (LocaleCompare("viewbox",keyword) == 0)
3913 {
3914 (void) GetNextToken(q,&q,extent,token);
3915 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3916 GetDrawValue(token,&next_token)-0.5));
3917 if (token == next_token)
3918 ThrowPointExpectedException(image,token);
3919 (void) GetNextToken(q,&q,extent,token);
3920 if (*token == ',')
3921 (void) GetNextToken(q,&q,extent,token);
3922 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3923 GetDrawValue(token,&next_token)-0.5));
3924 if (token == next_token)
3925 ThrowPointExpectedException(image,token);
3926 (void) GetNextToken(q,&q,extent,token);
3927 if (*token == ',')
3928 (void) GetNextToken(q,&q,extent,token);
3929 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3930 GetDrawValue(token,&next_token)+0.5);
3931 if (token == next_token)
3932 ThrowPointExpectedException(image,token);
3933 (void) GetNextToken(q,&q,extent,token);
3934 if (*token == ',')
3935 (void) GetNextToken(q,&q,extent,token);
3936 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3937 GetDrawValue(token,&next_token)+0.5);
3938 if (token == next_token)
3939 ThrowPointExpectedException(image,token);
3940 break;
3941 }
3942 status=MagickFalse;
3943 break;
3944 }
3945 case 'w':
3946 case 'W':
3947 {
3948 if (LocaleCompare("word-spacing",keyword) == 0)
3949 {
3950 (void) GetNextToken(q,&q,extent,token);
3951 graphic_context[n]->interword_spacing=GetDrawValue(token,
3952 &next_token);
3953 if (token == next_token)
3954 ThrowPointExpectedException(image,token);
3955 break;
3956 }
3957 status=MagickFalse;
3958 break;
3959 }
3960 default:
3961 {
3962 status=MagickFalse;
3963 break;
3964 }
3965 }
3966 if (status == MagickFalse)
3967 break;
3968 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3969 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3970 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3971 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3972 {
3973 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3974 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3975 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3976 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3977 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3978 current.tx;
3979 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3980 current.ty;
3981 }
3982 if (primitive_type == UndefinedPrimitive)
3983 {
3984 if ((draw_info->debug != MagickFalse) && (q > p))
3985 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3986 (q-p-1),p);
3987 continue;
3988 }
3989 /*
3990 Parse the primitive attributes.
3991 */
3992 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3993 if (primitive_info[i].text != (char *) NULL)
3994 primitive_info[i].text=DestroyString(primitive_info[i].text);
3995 i=0;
3996 mvg_info.offset=i;
3997 j=0;
3998 primitive_info[0].point.x=0.0;
3999 primitive_info[0].point.y=0.0;
4000 primitive_info[0].coordinates=0;
4001 primitive_info[0].method=FloodfillMethod;
4002 primitive_info[0].closed_subpath=MagickFalse;
4003 for (x=0; *q != '\0'; x++)
4004 {
4005 /*
4006 Define points.
4007 */
4008 if (IsPoint(q) == MagickFalse)
4009 break;
4010 (void) GetNextToken(q,&q,extent,token);
4011 point.x=GetDrawValue(token,&next_token);
4012 if (token == next_token)
4013 ThrowPointExpectedException(image,token);
4014 (void) GetNextToken(q,&q,extent,token);
4015 if (*token == ',')
4016 (void) GetNextToken(q,&q,extent,token);
4017 point.y=GetDrawValue(token,&next_token);
4018 if (token == next_token)
4019 ThrowPointExpectedException(image,token);
4020 (void) GetNextToken(q,(const char **) NULL,extent,token);
4021 if (*token == ',')
4022 (void) GetNextToken(q,&q,extent,token);
4023 primitive_info[i].primitive=primitive_type;
4024 primitive_info[i].point=point;
4025 primitive_info[i].coordinates=0;
4026 primitive_info[i].method=FloodfillMethod;
4027 primitive_info[i].closed_subpath=MagickFalse;
4028 i++;
4029 mvg_info.offset=i;
4030 if (i < (ssize_t) number_points)
4031 continue;
4032 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4033 primitive_info=(*mvg_info.primitive_info);
4034 }
4035 if (status == MagickFalse)
4036 break;
4037 if (primitive_info[j].text != (char *) NULL)
4038 primitive_info[j].text=DestroyString(primitive_info[j].text);
4039 primitive_info[j].primitive=primitive_type;
4040 primitive_info[j].coordinates=(size_t) x;
4041 primitive_info[j].method=FloodfillMethod;
4042 primitive_info[j].closed_subpath=MagickFalse;
4043 /*
4044 Circumscribe primitive within a circle.
4045 */
4046 bounds.x1=primitive_info[j].point.x;
4047 bounds.y1=primitive_info[j].point.y;
4048 bounds.x2=primitive_info[j].point.x;
4049 bounds.y2=primitive_info[j].point.y;
4050 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4051 {
4052 point=primitive_info[j+k].point;
4053 if (point.x < bounds.x1)
4054 bounds.x1=point.x;
4055 if (point.y < bounds.y1)
4056 bounds.y1=point.y;
4057 if (point.x > bounds.x2)
4058 bounds.x2=point.x;
4059 if (point.y > bounds.y2)
4060 bounds.y2=point.y;
4061 }
4062 /*
4063 Speculate how many points our primitive might consume.
4064 */
4065 coordinates=(double) primitive_info[j].coordinates;
4066 switch (primitive_type)
4067 {
4068 case RectanglePrimitive:
4069 {
4070 coordinates*=5.0;
4071 break;
4072 }
4073 case RoundRectanglePrimitive:
4074 {
4075 double
4076 alpha,
4077 beta,
4078 radius;
4079
4080 alpha=bounds.x2-bounds.x1;
4081 beta=bounds.y2-bounds.y1;
4082 radius=hypot(alpha,beta);
4083 coordinates*=5.0;
4084 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4085 BezierQuantum+360.0;
4086 break;
4087 }
4088 case BezierPrimitive:
4089 {
4090 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4091 break;
4092 }
4093 case PathPrimitive:
4094 {
4095 char
4096 *s,
4097 *t;
4098
4099 (void) GetNextToken(q,&q,extent,token);
4100 coordinates=1.0;
4101 t=token;
4102 for (s=token; *s != '\0'; s=t)
4103 {
4104 double
4105 value;
4106
4107 value=GetDrawValue(s,&t);
4108 (void) value;
4109 if (s == t)
4110 {
4111 t++;
4112 continue;
4113 }
4114 coordinates++;
4115 }
4116 for (s=token; *s != '\0'; s++)
4117 if (strspn(s,"AaCcQqSsTt") != 0)
4118 coordinates+=(20.0*BezierQuantum)+360.0;
4119 break;
4120 }
4121 default:
4122 break;
4123 }
4124 if (status == MagickFalse)
4125 break;
4126 if (((size_t) (i+coordinates)) >= number_points)
4127 {
4128 /*
4129 Resize based on speculative points required by primitive.
4130 */
4131 number_points+=coordinates+1;
4132 if (number_points < (size_t) coordinates)
4133 {
4134 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4135 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4136 image->filename);
4137 break;
4138 }
4139 mvg_info.offset=i;
4140 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4141 primitive_info=(*mvg_info.primitive_info);
4142 }
4143 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4144 primitive_info=(*mvg_info.primitive_info);
4145 if (status == MagickFalse)
4146 break;
4147 mvg_info.offset=j;
4148 switch (primitive_type)
4149 {
4150 case PointPrimitive:
4151 default:
4152 {
4153 if (primitive_info[j].coordinates != 1)
4154 {
4155 status=MagickFalse;
4156 break;
4157 }
4158 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4159 primitive_info=(*mvg_info.primitive_info);
4160 i=(ssize_t) (j+primitive_info[j].coordinates);
4161 break;
4162 }
4163 case LinePrimitive:
4164 {
4165 if (primitive_info[j].coordinates != 2)
4166 {
4167 status=MagickFalse;
4168 break;
4169 }
4170 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4171 primitive_info[j+1].point);
4172 primitive_info=(*mvg_info.primitive_info);
4173 i=(ssize_t) (j+primitive_info[j].coordinates);
4174 break;
4175 }
4176 case RectanglePrimitive:
4177 {
4178 if (primitive_info[j].coordinates != 2)
4179 {
4180 status=MagickFalse;
4181 break;
4182 }
4183 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4184 primitive_info[j+1].point);
4185 primitive_info=(*mvg_info.primitive_info);
4186 i=(ssize_t) (j+primitive_info[j].coordinates);
4187 break;
4188 }
4189 case RoundRectanglePrimitive:
4190 {
4191 if (primitive_info[j].coordinates != 3)
4192 {
4193 status=MagickFalse;
4194 break;
4195 }
4196 if ((primitive_info[j+2].point.x < 0.0) ||
4197 (primitive_info[j+2].point.y < 0.0))
4198 {
4199 status=MagickFalse;
4200 break;
4201 }
4202 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4203 {
4204 status=MagickFalse;
4205 break;
4206 }
4207 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4208 {
4209 status=MagickFalse;
4210 break;
4211 }
4212 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4213 primitive_info[j+1].point,primitive_info[j+2].point);
4214 primitive_info=(*mvg_info.primitive_info);
4215 i=(ssize_t) (j+primitive_info[j].coordinates);
4216 break;
4217 }
4218 case ArcPrimitive:
4219 {
4220 if (primitive_info[j].coordinates != 3)
4221 {
4222 status=MagickFalse;
4223 break;
4224 }
4225 status&=TraceArc(&mvg_info,primitive_info[j].point,
4226 primitive_info[j+1].point,primitive_info[j+2].point);
4227 primitive_info=(*mvg_info.primitive_info);
4228 i=(ssize_t) (j+primitive_info[j].coordinates);
4229 break;
4230 }
4231 case EllipsePrimitive:
4232 {
4233 if (primitive_info[j].coordinates != 3)
4234 {
4235 status=MagickFalse;
4236 break;
4237 }
4238 if ((primitive_info[j+1].point.x < 0.0) ||
4239 (primitive_info[j+1].point.y < 0.0))
4240 {
4241 status=MagickFalse;
4242 break;
4243 }
4244 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4245 primitive_info[j+1].point,primitive_info[j+2].point);
4246 primitive_info=(*mvg_info.primitive_info);
4247 i=(ssize_t) (j+primitive_info[j].coordinates);
4248 break;
4249 }
4250 case CirclePrimitive:
4251 {
4252 if (primitive_info[j].coordinates != 2)
4253 {
4254 status=MagickFalse;
4255 break;
4256 }
4257 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4258 primitive_info[j+1].point);
4259 primitive_info=(*mvg_info.primitive_info);
4260 i=(ssize_t) (j+primitive_info[j].coordinates);
4261 break;
4262 }
4263 case PolylinePrimitive:
4264 {
4265 if (primitive_info[j].coordinates < 1)
4266 {
4267 status=MagickFalse;
4268 break;
4269 }
4270 break;
4271 }
4272 case PolygonPrimitive:
4273 {
4274 if (primitive_info[j].coordinates < 3)
4275 {
4276 status=MagickFalse;
4277 break;
4278 }
4279 primitive_info[i]=primitive_info[j];
4280 primitive_info[i].coordinates=0;
4281 primitive_info[j].coordinates++;
4282 primitive_info[j].closed_subpath=MagickTrue;
4283 i++;
4284 break;
4285 }
4286 case BezierPrimitive:
4287 {
4288 if (primitive_info[j].coordinates < 3)
4289 {
4290 status=MagickFalse;
4291 break;
4292 }
4293 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4294 primitive_info=(*mvg_info.primitive_info);
4295 i=(ssize_t) (j+primitive_info[j].coordinates);
4296 break;
4297 }
4298 case PathPrimitive:
4299 {
4300 coordinates=(double) TracePath(image,&mvg_info,token);
4301 primitive_info=(*mvg_info.primitive_info);
4302 if (coordinates < 0.0)
4303 {
4304 status=MagickFalse;
4305 break;
4306 }
4307 i=(ssize_t) (j+coordinates);
4308 break;
4309 }
4310 case ColorPrimitive:
4311 case MattePrimitive:
4312 {
4313 ssize_t
4314 method;
4315
4316 if (primitive_info[j].coordinates != 1)
4317 {
4318 status=MagickFalse;
4319 break;
4320 }
4321 (void) GetNextToken(q,&q,extent,token);
4322 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4323 if (method == -1)
4324 {
4325 status=MagickFalse;
4326 break;
4327 }
4328 primitive_info[j].method=(PaintMethod) method;
4329 break;
4330 }
4331 case TextPrimitive:
4332 {
4333 char
4334 geometry[MagickPathExtent];
4335
4336 if (primitive_info[j].coordinates != 1)
4337 {
4338 status=MagickFalse;
4339 break;
4340 }
4341 if (*token != ',')
4342 (void) GetNextToken(q,&q,extent,token);
4343 (void) CloneString(&primitive_info[j].text,token);
4344 /*
4345 Compute text cursor offset.
4346 */
4347 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4348 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4349 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4350 {
4351 mvg_info.point=primitive_info->point;
4352 primitive_info->point.x+=cursor;
4353 }
4354 else
4355 {
4356 mvg_info.point=primitive_info->point;
4357 cursor=0.0;
4358 }
4359 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4360 primitive_info->point.x,primitive_info->point.y);
4361 clone_info->render=MagickFalse;
4362 clone_info->text=AcquireString(token);
4363 status&=GetTypeMetrics(image,clone_info,&metrics);
4364 clone_info=DestroyDrawInfo(clone_info);
4365 cursor+=metrics.width;
4366 if (graphic_context[n]->compliance != SVGCompliance)
4367 cursor=0.0;
4368 break;
4369 }
4370 case ImagePrimitive:
4371 {
4372 if (primitive_info[j].coordinates != 2)
4373 {
4374 status=MagickFalse;
4375 break;
4376 }
4377 (void) GetNextToken(q,&q,extent,token);
4378 (void) CloneString(&primitive_info[j].text,token);
4379 break;
4380 }
4381 }
4382 mvg_info.offset=i;
4383 if (status == 0)
4384 break;
4385 primitive_info[i].primitive=UndefinedPrimitive;
4386 if ((draw_info->debug != MagickFalse) && (q > p))
4387 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4388 /*
4389 Sanity check.
4390 */
4391 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4392 &graphic_context[n]->affine));
4393 primitive_info=(*mvg_info.primitive_info);
4394 if (status == 0)
4395 break;
4396 status&=CheckPrimitiveExtent(&mvg_info,(double)
4397 graphic_context[n]->stroke_width);
4398 primitive_info=(*mvg_info.primitive_info);
4399 if (status == 0)
4400 break;
4401 if (i == 0)
4402 continue;
4403 /*
4404 Transform points.
4405 */
4406 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4407 {
4408 point=primitive_info[i].point;
4409 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4410 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4411 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4412 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4413 point=primitive_info[i].point;
4414 if (point.x < graphic_context[n]->bounds.x1)
4415 graphic_context[n]->bounds.x1=point.x;
4416 if (point.y < graphic_context[n]->bounds.y1)
4417 graphic_context[n]->bounds.y1=point.y;
4418 if (point.x > graphic_context[n]->bounds.x2)
4419 graphic_context[n]->bounds.x2=point.x;
4420 if (point.y > graphic_context[n]->bounds.y2)
4421 graphic_context[n]->bounds.y2=point.y;
4422 if (primitive_info[i].primitive == ImagePrimitive)
4423 break;
4424 if (i >= (ssize_t) number_points)
4425 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4426 }
4427 if (graphic_context[n]->render != MagickFalse)
4428 {
4429 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4430 (graphic_context[n]->clip_mask != (char *) NULL) &&
4431 (LocaleCompare(graphic_context[n]->clip_mask,
4432 graphic_context[n-1]->clip_mask) != 0))
4433 {
4434 const char
4435 *clip_path;
4436
4437 clip_path=(const char *) GetValueFromSplayTree(macros,
4438 graphic_context[n]->clip_mask);
4439 if (clip_path != (const char *) NULL)
4440 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4441 clip_path);
4442 status&=DrawClipPath(image,graphic_context[n],
4443 graphic_context[n]->clip_mask);
4444 }
4445 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4446 }
4447 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4448 primitive_extent);
4449 if (proceed == MagickFalse)
4450 break;
4451 if (status == 0)
4452 break;
4453 }
4454 if (draw_info->debug != MagickFalse)
4455 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4456 /*
4457 Relinquish resources.
4458 */
4459 macros=DestroySplayTree(macros);
4460 token=DestroyString(token);
4461 if (primitive_info != (PrimitiveInfo *) NULL)
4462 {
4463 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4464 if (primitive_info[i].text != (char *) NULL)
4465 primitive_info[i].text=DestroyString(primitive_info[i].text);
4466 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4467 }
4468 primitive=DestroyString(primitive);
4469 for ( ; n >= 0; n--)
4470 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4471 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4472 if (status == MagickFalse)
4473 ThrowBinaryImageException(DrawError,
4474 "NonconformingDrawingPrimitiveDefinition",keyword);
4475 return(status != 0 ? MagickTrue : MagickFalse);
4476}
4477
4478MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4479{
4480 return(RenderMVGContent(image,draw_info,0));
4481}
4482
4483/*
4484%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4485% %
4486% %
4487% %
4488% D r a w P a t t e r n P a t h %
4489% %
4490% %
4491% %
4492%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4493%
4494% DrawPatternPath() draws a pattern.
4495%
4496% The format of the DrawPatternPath method is:
4497%
4498% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4499% const char *name,Image **pattern)
4500%
4501% A description of each parameter follows:
4502%
4503% o image: the image.
4504%
4505% o draw_info: the draw info.
4506%
4507% o name: the pattern name.
4508%
4509% o image: the image.
4510%
4511*/
4512MagickExport MagickBooleanType DrawPatternPath(Image *image,
4513 const DrawInfo *draw_info,const char *name,Image **pattern)
4514{
4515 char
4516 property[MaxTextExtent];
4517
4518 const char
4519 *geometry,
4520 *path,
4521 *type;
4522
4523 DrawInfo
4524 *clone_info;
4525
4526 ImageInfo
4527 *image_info;
4528
4529 MagickBooleanType
4530 status;
4531
4532 assert(image != (Image *) NULL);
4533 assert(image->signature == MagickCoreSignature);
4534 assert(draw_info != (const DrawInfo *) NULL);
4535 if (IsEventLogging() != MagickFalse)
4536 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4537 assert(name != (const char *) NULL);
4538 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4539 path=GetImageArtifact(image,property);
4540 if (path == (const char *) NULL)
4541 return(MagickFalse);
4542 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4543 geometry=GetImageArtifact(image,property);
4544 if (geometry == (const char *) NULL)
4545 return(MagickFalse);
4546 if ((*pattern) != (Image *) NULL)
4547 *pattern=DestroyImage(*pattern);
4548 image_info=AcquireImageInfo();
4549 image_info->size=AcquireString(geometry);
4550 *pattern=AcquireImage(image_info);
4551 image_info=DestroyImageInfo(image_info);
4552 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4553 &image->exception);
4554 (void) SetImageBackgroundColor(*pattern);
4555 if (draw_info->debug != MagickFalse)
4556 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4557 "begin pattern-path %s %s",name,geometry);
4558 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4559 if (clone_info->fill_pattern != (Image *) NULL)
4560 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4561 if (clone_info->stroke_pattern != (Image *) NULL)
4562 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4563 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4564 type=GetImageArtifact(image,property);
4565 if (type != (const char *) NULL)
4566 clone_info->gradient.type=(GradientType) ParseCommandOption(
4567 MagickGradientOptions,MagickFalse,type);
4568 (void) CloneString(&clone_info->primitive,path);
4569 status=RenderMVGContent(*pattern,clone_info,0);
4570 clone_info=DestroyDrawInfo(clone_info);
4571 if (draw_info->debug != MagickFalse)
4572 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4573 return(status);
4574}
4575
4576/*
4577%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4578% %
4579% %
4580% %
4581+ D r a w P o l y g o n P r i m i t i v e %
4582% %
4583% %
4584% %
4585%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4586%
4587% DrawPolygonPrimitive() draws a polygon on the image.
4588%
4589% The format of the DrawPolygonPrimitive method is:
4590%
4591% MagickBooleanType DrawPolygonPrimitive(Image *image,
4592% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4593%
4594% A description of each parameter follows:
4595%
4596% o image: the image.
4597%
4598% o draw_info: the draw info.
4599%
4600% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4601%
4602*/
4603
4604static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4605{
4606 ssize_t
4607 i;
4608
4609 assert(polygon_info != (PolygonInfo **) NULL);
4610 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4611 if (polygon_info[i] != (PolygonInfo *) NULL)
4612 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4613 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4614 return(polygon_info);
4615}
4616
4617static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4618 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4619{
4620 PathInfo
4621 *magick_restrict path_info;
4622
4624 **polygon_info;
4625
4626 size_t
4627 number_threads;
4628
4629 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4630 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4631 sizeof(*polygon_info));
4632 if (polygon_info == (PolygonInfo **) NULL)
4633 {
4634 (void) ThrowMagickException(exception,GetMagickModule(),
4635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4636 return((PolygonInfo **) NULL);
4637 }
4638 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4639 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4640 if (path_info == (PathInfo *) NULL)
4641 return(DestroyPolygonTLS(polygon_info));
4642 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4643 if (polygon_info[0] == (PolygonInfo *) NULL)
4644 {
4645 (void) ThrowMagickException(exception,GetMagickModule(),
4646 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4647 return(DestroyPolygonTLS(polygon_info));
4648 }
4649 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4650 return(polygon_info);
4651}
4652
4653static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4654 const size_t number_threads,ExceptionInfo *exception)
4655{
4656 ssize_t
4657 i;
4658
4659 for (i=1; i < (ssize_t) number_threads; i++)
4660 {
4661 EdgeInfo
4662 *edge_info;
4663
4664 ssize_t
4665 j;
4666
4667 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4668 sizeof(*polygon_info[i]));
4669 if (polygon_info[i] == (PolygonInfo *) NULL)
4670 {
4671 (void) ThrowMagickException(exception,GetMagickModule(),
4672 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4673 return(MagickFalse);
4674 }
4675 polygon_info[i]->number_edges=0;
4676 edge_info=polygon_info[0]->edges;
4677 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4678 polygon_info[0]->number_edges,sizeof(*edge_info));
4679 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4680 {
4681 (void) ThrowMagickException(exception,GetMagickModule(),
4682 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4683 return(MagickFalse);
4684 }
4685 (void) memcpy(polygon_info[i]->edges,edge_info,
4686 polygon_info[0]->number_edges*sizeof(*edge_info));
4687 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4688 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4689 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4690 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4691 {
4692 edge_info=polygon_info[0]->edges+j;
4693 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4694 edge_info->number_points,sizeof(*edge_info));
4695 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4696 {
4697 (void) ThrowMagickException(exception,GetMagickModule(),
4698 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4699 return(MagickFalse);
4700 }
4701 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4702 edge_info->number_points*sizeof(*edge_info->points));
4703 }
4704 }
4705 return(MagickTrue);
4706}
4707
4708static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4709{
4710 assert(edge < (ssize_t) polygon_info->number_edges);
4711 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4712 polygon_info->edges[edge].points);
4713 polygon_info->number_edges--;
4714 if (edge < (ssize_t) polygon_info->number_edges)
4715 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4716 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4717 return(polygon_info->number_edges);
4718}
4719
4720static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4721 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4722 const ssize_t y,double *stroke_opacity)
4723{
4724 double
4725 alpha,
4726 beta,
4727 distance,
4728 subpath_opacity;
4729
4730 PointInfo
4731 delta;
4732
4733 EdgeInfo
4734 *p;
4735
4736 const PointInfo
4737 *q;
4738
4739 ssize_t
4740 i;
4741
4742 ssize_t
4743 j,
4744 winding_number;
4745
4746 /*
4747 Compute fill & stroke opacity for this (x,y) point.
4748 */
4749 *stroke_opacity=0.0;
4750 subpath_opacity=0.0;
4751 p=polygon_info->edges;
4752 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4753 {
4754 if ((double) y <= (p->bounds.y1-mid-0.5))
4755 break;
4756 if ((double) y > (p->bounds.y2+mid+0.5))
4757 {
4758 p--;
4759 (void) DestroyEdge(polygon_info,j--);
4760 continue;
4761 }
4762 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4763 ((double) x > (p->bounds.x2+mid+0.5)))
4764 continue;
4765 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4766 for ( ; i < (ssize_t) p->number_points; i++)
4767 {
4768 if ((double) y <= (p->points[i-1].y-mid-0.5))
4769 break;
4770 if ((double) y > (p->points[i].y+mid+0.5))
4771 continue;
4772 if (p->scanline != (double) y)
4773 {
4774 p->scanline=(double) y;
4775 p->highwater=(size_t) i;
4776 }
4777 /*
4778 Compute distance between a point and an edge.
4779 */
4780 q=p->points+i-1;
4781 delta.x=(q+1)->x-q->x;
4782 delta.y=(q+1)->y-q->y;
4783 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4784 if (beta <= 0.0)
4785 {
4786 delta.x=(double) x-q->x;
4787 delta.y=(double) y-q->y;
4788 distance=delta.x*delta.x+delta.y*delta.y;
4789 }
4790 else
4791 {
4792 alpha=delta.x*delta.x+delta.y*delta.y;
4793 if (beta >= alpha)
4794 {
4795 delta.x=(double) x-(q+1)->x;
4796 delta.y=(double) y-(q+1)->y;
4797 distance=delta.x*delta.x+delta.y*delta.y;
4798 }
4799 else
4800 {
4801 alpha=PerceptibleReciprocal(alpha);
4802 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4803 distance=alpha*beta*beta;
4804 }
4805 }
4806 /*
4807 Compute stroke & subpath opacity.
4808 */
4809 beta=0.0;
4810 if (p->ghostline == MagickFalse)
4811 {
4812 alpha=mid+0.5;
4813 if ((*stroke_opacity < 1.0) &&
4814 (distance <= ((alpha+0.25)*(alpha+0.25))))
4815 {
4816 alpha=mid-0.5;
4817 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4818 *stroke_opacity=1.0;
4819 else
4820 {
4821 beta=1.0;
4822 if (fabs(distance-1.0) >= MagickEpsilon)
4823 beta=sqrt((double) distance);
4824 alpha=beta-mid-0.5;
4825 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4826 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4827 }
4828 }
4829 }
4830 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4831 continue;
4832 if (distance <= 0.0)
4833 {
4834 subpath_opacity=1.0;
4835 continue;
4836 }
4837 if (distance > 1.0)
4838 continue;
4839 if (fabs(beta) < MagickEpsilon)
4840 {
4841 beta=1.0;
4842 if (fabs(distance-1.0) >= MagickEpsilon)
4843 beta=sqrt(distance);
4844 }
4845 alpha=beta-1.0;
4846 if (subpath_opacity < (alpha*alpha))
4847 subpath_opacity=alpha*alpha;
4848 }
4849 }
4850 /*
4851 Compute fill opacity.
4852 */
4853 if (fill == MagickFalse)
4854 return(0.0);
4855 if (subpath_opacity >= 1.0)
4856 return(1.0);
4857 /*
4858 Determine winding number.
4859 */
4860 winding_number=0;
4861 p=polygon_info->edges;
4862 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4863 {
4864 if ((double) y <= p->bounds.y1)
4865 break;
4866 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4867 continue;
4868 if ((double) x > p->bounds.x2)
4869 {
4870 winding_number+=p->direction != 0 ? 1 : -1;
4871 continue;
4872 }
4873 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4874 for ( ; i < (ssize_t) (p->number_points-1); i++)
4875 if ((double) y <= p->points[i].y)
4876 break;
4877 q=p->points+i-1;
4878 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4879 winding_number+=p->direction != 0 ? 1 : -1;
4880 }
4881 if (fill_rule != NonZeroRule)
4882 {
4883 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4884 return(1.0);
4885 }
4886 else
4887 if (MagickAbsoluteValue(winding_number) != 0)
4888 return(1.0);
4889 return(subpath_opacity);
4890}
4891
4892static MagickBooleanType DrawPolygonPrimitive(Image *image,
4893 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4894{
4895 typedef struct _ExtentInfo
4896 {
4897 ssize_t
4898 x1,
4899 y1,
4900 x2,
4901 y2;
4902 } ExtentInfo;
4903
4904 CacheView
4905 *image_view;
4906
4907 const char
4908 *artifact;
4909
4910 double
4911 mid;
4912
4914 *exception;
4915
4916 ExtentInfo
4917 poly_extent;
4918
4919 MagickBooleanType
4920 fill,
4921 status;
4922
4924 **magick_restrict polygon_info;
4925
4926 EdgeInfo
4927 *p;
4928
4930 bounds;
4931
4932 size_t
4933 number_threads = 1;
4934
4935 ssize_t
4936 i,
4937 y;
4938
4939 assert(image != (Image *) NULL);
4940 assert(image->signature == MagickCoreSignature);
4941 assert(draw_info != (DrawInfo *) NULL);
4942 assert(draw_info->signature == MagickCoreSignature);
4943 assert(primitive_info != (PrimitiveInfo *) NULL);
4944 if (IsEventLogging() != MagickFalse)
4945 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4946 if (primitive_info->coordinates <= 1)
4947 return(MagickTrue);
4948 /*
4949 Compute bounding box.
4950 */
4951 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4952 if (polygon_info == (PolygonInfo **) NULL)
4953 return(MagickFalse);
4954 if (draw_info->debug != MagickFalse)
4955 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4956 fill=(primitive_info->method == FillToBorderMethod) ||
4957 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4958 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4959 bounds=polygon_info[0]->edges[0].bounds;
4960 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4961 if (IsStringTrue(artifact) != MagickFalse)
4962 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4963 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4964 {
4965 p=polygon_info[0]->edges+i;
4966 if (p->bounds.x1 < bounds.x1)
4967 bounds.x1=p->bounds.x1;
4968 if (p->bounds.y1 < bounds.y1)
4969 bounds.y1=p->bounds.y1;
4970 if (p->bounds.x2 > bounds.x2)
4971 bounds.x2=p->bounds.x2;
4972 if (p->bounds.y2 > bounds.y2)
4973 bounds.y2=p->bounds.y2;
4974 }
4975 bounds.x1-=(mid+1.0);
4976 bounds.y1-=(mid+1.0);
4977 bounds.x2+=(mid+1.0);
4978 bounds.y2+=(mid+1.0);
4979 if ((bounds.x1 >= (double) image->columns) ||
4980 (bounds.y1 >= (double) image->rows) ||
4981 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4982 {
4983 polygon_info=DestroyPolygonTLS(polygon_info);
4984 return(MagickTrue); /* virtual polygon */
4985 }
4986 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4987 (double) image->columns-1.0 : bounds.x1;
4988 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4989 (double) image->rows-1.0 : bounds.y1;
4990 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4991 (double) image->columns-1.0 : bounds.x2;
4992 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4993 (double) image->rows-1.0 : bounds.y2;
4994 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
4995 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
4996 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
4997 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
4998 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
4999 poly_extent.y1+1,1);
5000 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5001 if (status == MagickFalse)
5002 {
5003 polygon_info=DestroyPolygonTLS(polygon_info);
5004 return(status);
5005 }
5006 status=MagickTrue;
5007 exception=(&image->exception);
5008 image_view=AcquireAuthenticCacheView(image,exception);
5009 if ((primitive_info->coordinates == 1) ||
5010 (polygon_info[0]->number_edges == 0))
5011 {
5012 /*
5013 Draw point.
5014 */
5015#if defined(MAGICKCORE_OPENMP_SUPPORT)
5016 #pragma omp parallel for schedule(static) shared(status) \
5017 num_threads(number_threads)
5018#endif
5019 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5020 {
5021 MagickBooleanType
5022 sync;
5023
5025 *magick_restrict q;
5026
5027 ssize_t
5028 x;
5029
5030 if (status == MagickFalse)
5031 continue;
5032 x=poly_extent.x1;
5033 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5034 x+1),1,exception);
5035 if (q == (PixelPacket *) NULL)
5036 {
5037 status=MagickFalse;
5038 continue;
5039 }
5040 for ( ; x <= poly_extent.x2; x++)
5041 {
5042 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5043 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5044 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5045 q++;
5046 }
5047 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5048 if (sync == MagickFalse)
5049 status=MagickFalse;
5050 }
5051 image_view=DestroyCacheView(image_view);
5052 polygon_info=DestroyPolygonTLS(polygon_info);
5053 if (draw_info->debug != MagickFalse)
5054 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5055 " end draw-polygon");
5056 return(status);
5057 }
5058 /*
5059 Draw polygon or line.
5060 */
5061 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5062 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5063#if defined(MAGICKCORE_OPENMP_SUPPORT)
5064 #pragma omp parallel for schedule(static) shared(status) \
5065 num_threads(number_threads)
5066#endif
5067 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5068 {
5069 const int
5070 id = GetOpenMPThreadId();
5071
5073 fill_color,
5074 stroke_color;
5075
5077 *magick_restrict q;
5078
5079 ssize_t
5080 x;
5081
5082 if (status == MagickFalse)
5083 continue;
5084 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5085 (poly_extent.x2-poly_extent.x1+1),1,exception);
5086 if (q == (PixelPacket *) NULL)
5087 {
5088 status=MagickFalse;
5089 continue;
5090 }
5091 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5092 {
5093 double
5094 fill_opacity,
5095 stroke_opacity;
5096
5097 /*
5098 Fill and/or stroke.
5099 */
5100 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5101 draw_info->fill_rule,x,y,&stroke_opacity);
5102 if (draw_info->stroke_antialias == MagickFalse)
5103 {
5104 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5105 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5106 }
5107 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5108 &fill_color);
5109 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5110 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5111 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5112 (MagickRealType) q->opacity,q);
5113 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5114 &stroke_color);
5115 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5116 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5117 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5118 (MagickRealType) q->opacity,q);
5119 q++;
5120 }
5121 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5122 status=MagickFalse;
5123 }
5124 image_view=DestroyCacheView(image_view);
5125 polygon_info=DestroyPolygonTLS(polygon_info);
5126 if (draw_info->debug != MagickFalse)
5127 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5128 return(status);
5129}
5130
5131/*
5132%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5133% %
5134% %
5135% %
5136% D r a w P r i m i t i v e %
5137% %
5138% %
5139% %
5140%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5141%
5142% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5143%
5144% The format of the DrawPrimitive method is:
5145%
5146% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5147% PrimitiveInfo *primitive_info)
5148%
5149% A description of each parameter follows:
5150%
5151% o image: the image.
5152%
5153% o draw_info: the draw info.
5154%
5155% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5156%
5157*/
5158static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5159{
5160 const char
5161 *methods[] =
5162 {
5163 "point",
5164 "replace",
5165 "floodfill",
5166 "filltoborder",
5167 "reset",
5168 "?"
5169 };
5170
5171 PointInfo
5172 p,
5173 q,
5174 point;
5175
5176 ssize_t
5177 i,
5178 x;
5179
5180 ssize_t
5181 coordinates,
5182 y;
5183
5184 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5185 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5186 switch (primitive_info->primitive)
5187 {
5188 case PointPrimitive:
5189 {
5190 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5191 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5192 methods[primitive_info->method]);
5193 return;
5194 }
5195 case ColorPrimitive:
5196 {
5197 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5198 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5199 methods[primitive_info->method]);
5200 return;
5201 }
5202 case MattePrimitive:
5203 {
5204 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5205 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5206 methods[primitive_info->method]);
5207 return;
5208 }
5209 case TextPrimitive:
5210 {
5211 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5212 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5213 return;
5214 }
5215 case ImagePrimitive:
5216 {
5217 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5218 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5219 return;
5220 }
5221 default:
5222 break;
5223 }
5224 coordinates=0;
5225 p=primitive_info[0].point;
5226 q.x=(-1.0);
5227 q.y=(-1.0);
5228 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5229 {
5230 point=primitive_info[i].point;
5231 if (coordinates <= 0)
5232 {
5233 coordinates=(ssize_t) primitive_info[i].coordinates;
5234 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5235 " begin open (%.20g)",(double) coordinates);
5236 p=point;
5237 }
5238 point=primitive_info[i].point;
5239 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5240 (fabs(q.y-point.y) >= MagickEpsilon))
5241 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5242 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5243 else
5244 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5245 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5246 q=point;
5247 coordinates--;
5248 if (coordinates > 0)
5249 continue;
5250 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5251 (fabs(p.y-point.y) >= MagickEpsilon))
5252 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5253 (double) coordinates);
5254 else
5255 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5256 (double) coordinates);
5257 }
5258}
5259
5260MagickExport MagickBooleanType DrawPrimitive(Image *image,
5261 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5262{
5263 CacheView
5264 *image_view;
5265
5267 *exception;
5268
5269 MagickStatusType
5270 status;
5271
5272 ssize_t
5273 i,
5274 x;
5275
5276 ssize_t
5277 y;
5278
5279 if (draw_info->debug != MagickFalse)
5280 {
5281 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5282 " begin draw-primitive");
5283 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5284 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5285 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5286 draw_info->affine.tx,draw_info->affine.ty);
5287 }
5288 exception=(&image->exception);
5289 status=MagickTrue;
5290 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5291 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5292 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5293 status=SetImageColorspace(image,sRGBColorspace);
5294 if (draw_info->compliance == SVGCompliance)
5295 {
5296 status&=SetImageClipMask(image,draw_info->clipping_mask);
5297 status&=SetImageMask(image,draw_info->composite_mask);
5298 }
5299 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5300 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5301 image_view=AcquireAuthenticCacheView(image,exception);
5302 switch (primitive_info->primitive)
5303 {
5304 case ColorPrimitive:
5305 {
5306 switch (primitive_info->method)
5307 {
5308 case PointMethod:
5309 default:
5310 {
5312 *q;
5313
5314 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5315 if (q == (PixelPacket *) NULL)
5316 break;
5317 (void) GetFillColor(draw_info,x,y,q);
5318 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5319 break;
5320 }
5321 case ReplaceMethod:
5322 {
5324 target;
5325
5326 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5327 for (y=0; y < (ssize_t) image->rows; y++)
5328 {
5330 *magick_restrict q;
5331
5332 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5333 exception);
5334 if (q == (PixelPacket *) NULL)
5335 break;
5336 for (x=0; x < (ssize_t) image->columns; x++)
5337 {
5338 if (IsColorSimilar(image,q,&target) == MagickFalse)
5339 {
5340 q++;
5341 continue;
5342 }
5343 (void) GetFillColor(draw_info,x,y,q);
5344 q++;
5345 }
5346 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5347 if (status == MagickFalse)
5348 break;
5349 }
5350 break;
5351 }
5352 case FloodfillMethod:
5353 case FillToBorderMethod:
5354 {
5356 target;
5357
5358 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5359 if (primitive_info->method == FillToBorderMethod)
5360 {
5361 target.red=(MagickRealType) draw_info->border_color.red;
5362 target.green=(MagickRealType) draw_info->border_color.green;
5363 target.blue=(MagickRealType) draw_info->border_color.blue;
5364 }
5365 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5366 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5367 MagickTrue);
5368 break;
5369 }
5370 case ResetMethod:
5371 {
5372 for (y=0; y < (ssize_t) image->rows; y++)
5373 {
5375 *magick_restrict q;
5376
5377 ssize_t
5378 x;
5379
5380 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5381 exception);
5382 if (q == (PixelPacket *) NULL)
5383 break;
5384 for (x=0; x < (ssize_t) image->columns; x++)
5385 {
5386 (void) GetFillColor(draw_info,x,y,q);
5387 q++;
5388 }
5389 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5390 if (status == MagickFalse)
5391 break;
5392 }
5393 break;
5394 }
5395 }
5396 break;
5397 }
5398 case MattePrimitive:
5399 {
5400 if (image->matte == MagickFalse)
5401 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5402 switch (primitive_info->method)
5403 {
5404 case PointMethod:
5405 default:
5406 {
5408 pixel;
5409
5411 *q;
5412
5413 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5414 if (q == (PixelPacket *) NULL)
5415 break;
5416 (void) GetFillColor(draw_info,x,y,&pixel);
5417 SetPixelOpacity(q,pixel.opacity);
5418 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5419 break;
5420 }
5421 case ReplaceMethod:
5422 {
5424 pixel,
5425 target;
5426
5427 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5428 for (y=0; y < (ssize_t) image->rows; y++)
5429 {
5431 *magick_restrict q;
5432
5433 ssize_t
5434 x;
5435
5436 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5437 exception);
5438 if (q == (PixelPacket *) NULL)
5439 break;
5440 for (x=0; x < (ssize_t) image->columns; x++)
5441 {
5442 if (IsColorSimilar(image,q,&target) == MagickFalse)
5443 {
5444 q++;
5445 continue;
5446 }
5447 (void) GetFillColor(draw_info,x,y,&pixel);
5448 SetPixelOpacity(q,pixel.opacity);
5449 q++;
5450 }
5451 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5452 if (status == MagickFalse)
5453 break;
5454 }
5455 break;
5456 }
5457 case FloodfillMethod:
5458 case FillToBorderMethod:
5459 {
5461 target;
5462
5463 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5464 if (primitive_info->method == FillToBorderMethod)
5465 {
5466 target.red=(MagickRealType) draw_info->border_color.red;
5467 target.green=(MagickRealType) draw_info->border_color.green;
5468 target.blue=(MagickRealType) draw_info->border_color.blue;
5469 }
5470 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5471 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5472 MagickTrue);
5473 break;
5474 }
5475 case ResetMethod:
5476 {
5478 pixel;
5479
5480 for (y=0; y < (ssize_t) image->rows; y++)
5481 {
5483 *magick_restrict q;
5484
5485 ssize_t
5486 x;
5487
5488 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5489 exception);
5490 if (q == (PixelPacket *) NULL)
5491 break;
5492 for (x=0; x < (ssize_t) image->columns; x++)
5493 {
5494 (void) GetFillColor(draw_info,x,y,&pixel);
5495 SetPixelOpacity(q,pixel.opacity);
5496 q++;
5497 }
5498 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5499 if (status == MagickFalse)
5500 break;
5501 }
5502 break;
5503 }
5504 }
5505 break;
5506 }
5507 case ImagePrimitive:
5508 {
5510 affine;
5511
5512 char
5513 composite_geometry[MaxTextExtent];
5514
5515 Image
5516 *composite_image,
5517 *composite_images;
5518
5519 ImageInfo
5520 *clone_info;
5521
5523 geometry;
5524
5525 ssize_t
5526 x1,
5527 y1;
5528
5529 if (primitive_info->text == (char *) NULL)
5530 break;
5531 clone_info=AcquireImageInfo();
5532 composite_images=(Image *) NULL;
5533 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5534 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5535 &image->exception);
5536 else
5537 if (*primitive_info->text != '\0')
5538 {
5539 const MagickInfo
5540 *magick_info;
5541
5542 MagickStatusType
5543 path_status;
5544
5545 struct stat
5546 attributes;
5547
5548 /*
5549 Read composite image.
5550 */
5551 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5552 MagickPathExtent);
5553 (void) SetImageInfo(clone_info,1,exception);
5554 magick_info=GetMagickInfo(clone_info->magick,exception);
5555 if ((magick_info != (const MagickInfo*) NULL) &&
5556 (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5557 {
5558 (void) ThrowMagickException(exception,GetMagickModule(),
5559 CorruptImageError,"ImageTypeNotSupported","`%s'",
5560 clone_info->filename);
5561 clone_info=DestroyImageInfo(clone_info);
5562 break;
5563 }
5564 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5565 MagickPathExtent);
5566 if (clone_info->size != (char *) NULL)
5567 clone_info->size=DestroyString(clone_info->size);
5568 if (clone_info->extract != (char *) NULL)
5569 clone_info->extract=DestroyString(clone_info->extract);
5570 path_status=GetPathAttributes(clone_info->filename,&attributes);
5571 if (path_status != MagickFalse)
5572 {
5573 if (S_ISCHR(attributes.st_mode) == 0)
5574 composite_images=ReadImage(clone_info,exception);
5575 else
5576 (void) ThrowMagickException(exception,GetMagickModule(),
5577 FileOpenError,"UnableToOpenFile","`%s'",
5578 clone_info->filename);
5579 }
5580 else
5581 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5582 (LocaleCompare(clone_info->magick,"http") != 0) &&
5583 (LocaleCompare(clone_info->magick,"https") != 0) &&
5584 (LocaleCompare(clone_info->magick,"vid") != 0))
5585 composite_images=ReadImage(clone_info,exception);
5586 else
5587 (void) ThrowMagickException(exception,GetMagickModule(),
5588 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5589 }
5590 clone_info=DestroyImageInfo(clone_info);
5591 if (composite_images == (Image *) NULL)
5592 {
5593 status=0;
5594 break;
5595 }
5596 composite_image=RemoveFirstImageFromList(&composite_images);
5597 composite_images=DestroyImageList(composite_images);
5598 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5599 NULL,(void *) NULL);
5600 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5601 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5602 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5603 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5604 {
5605 char
5606 geometry[MaxTextExtent];
5607
5608 /*
5609 Resize image.
5610 */
5611 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5612 primitive_info[1].point.x,primitive_info[1].point.y);
5613 composite_image->filter=image->filter;
5614 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5615 }
5616 if (composite_image->matte == MagickFalse)
5617 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5618 if (draw_info->opacity != OpaqueOpacity)
5619 status&=SetImageOpacity(composite_image,draw_info->opacity);
5620 SetGeometry(image,&geometry);
5621 image->gravity=draw_info->gravity;
5622 geometry.x=x;
5623 geometry.y=y;
5624 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5625 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5626 composite_image->rows,(double) geometry.x,(double) geometry.y);
5627 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5628 &image->exception);
5629 affine=draw_info->affine;
5630 affine.tx=(double) geometry.x;
5631 affine.ty=(double) geometry.y;
5632 composite_image->interpolate=image->interpolate;
5633 if ((draw_info->compose == OverCompositeOp) ||
5634 (draw_info->compose == SrcOverCompositeOp))
5635 status&=DrawAffineImage(image,composite_image,&affine);
5636 else
5637 status&=CompositeImage(image,draw_info->compose,composite_image,
5638 geometry.x,geometry.y);
5639 composite_image=DestroyImage(composite_image);
5640 break;
5641 }
5642 case PointPrimitive:
5643 {
5645 fill_color;
5646
5648 *q;
5649
5650 if ((y < 0) || (y >= (ssize_t) image->rows))
5651 break;
5652 if ((x < 0) || (x >= (ssize_t) image->columns))
5653 break;
5654 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5655 if (q == (PixelPacket *) NULL)
5656 break;
5657 (void) GetFillColor(draw_info,x,y,&fill_color);
5658 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5659 (MagickRealType) q->opacity,q);
5660 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5661 break;
5662 }
5663 case TextPrimitive:
5664 {
5665 char
5666 geometry[MaxTextExtent];
5667
5668 DrawInfo
5669 *clone_info;
5670
5671 if (primitive_info->text == (char *) NULL)
5672 break;
5673 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5674 (void) CloneString(&clone_info->text,primitive_info->text);
5675 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5676 primitive_info->point.x,primitive_info->point.y);
5677 (void) CloneString(&clone_info->geometry,geometry);
5678 status&=AnnotateImage(image,clone_info);
5679 clone_info=DestroyDrawInfo(clone_info);
5680 break;
5681 }
5682 default:
5683 {
5684 double
5685 mid,
5686 scale;
5687
5688 DrawInfo
5689 *clone_info;
5690
5691 if (IsEventLogging() != MagickFalse)
5692 LogPrimitiveInfo(primitive_info);
5693 scale=ExpandAffine(&draw_info->affine);
5694 if ((draw_info->dash_pattern != (double *) NULL) &&
5695 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5696 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5697 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5698 {
5699 /*
5700 Draw dash polygon.
5701 */
5702 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5703 clone_info->stroke_width=0.0;
5704 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5705 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5706 clone_info=DestroyDrawInfo(clone_info);
5707 if (status != MagickFalse)
5708 status&=DrawDashPolygon(draw_info,primitive_info,image);
5709 break;
5710 }
5711 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5712 if ((mid > 1.0) &&
5713 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5714 (draw_info->stroke_pattern != (Image *) NULL)))
5715 {
5716 double
5717 x,
5718 y;
5719
5720 MagickBooleanType
5721 closed_path;
5722
5723 /*
5724 Draw strokes while respecting line cap/join attributes.
5725 */
5726 closed_path=primitive_info[0].closed_subpath;
5727 i=(ssize_t) primitive_info[0].coordinates;
5728 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5729 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5730 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5731 closed_path=MagickTrue;
5732 if ((((draw_info->linecap == RoundCap) ||
5733 (closed_path != MagickFalse)) &&
5734 (draw_info->linejoin == RoundJoin)) ||
5735 (primitive_info[i].primitive != UndefinedPrimitive))
5736 {
5737 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5738 break;
5739 }
5740 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5741 clone_info->stroke_width=0.0;
5742 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5743 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5744 clone_info=DestroyDrawInfo(clone_info);
5745 if (status != MagickFalse)
5746 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5747 break;
5748 }
5749 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5750 break;
5751 }
5752 }
5753 image_view=DestroyCacheView(image_view);
5754 if (draw_info->compliance == SVGCompliance)
5755 {
5756 status&=SetImageClipMask(image,(Image *) NULL);
5757 status&=SetImageMask(image,(Image *) NULL);
5758 }
5759 if (draw_info->debug != MagickFalse)
5760 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5761 return(status != 0 ? MagickTrue : MagickFalse);
5762}
5763
5764/*
5765%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5766% %
5767% %
5768% %
5769+ D r a w S t r o k e P o l y g o n %
5770% %
5771% %
5772% %
5773%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5774%
5775% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5776% the image while respecting the line cap and join attributes.
5777%
5778% The format of the DrawStrokePolygon method is:
5779%
5780% MagickBooleanType DrawStrokePolygon(Image *image,
5781% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5782%
5783% A description of each parameter follows:
5784%
5785% o image: the image.
5786%
5787% o draw_info: the draw info.
5788%
5789% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5790%
5791%
5792*/
5793
5794static MagickBooleanType DrawRoundLinecap(Image *image,
5795 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5796{
5798 linecap[5];
5799
5800 ssize_t
5801 i;
5802
5803 for (i=0; i < 4; i++)
5804 linecap[i]=(*primitive_info);
5805 linecap[0].coordinates=4;
5806 linecap[1].point.x+=2.0*MagickEpsilon;
5807 linecap[2].point.x+=2.0*MagickEpsilon;
5808 linecap[2].point.y+=2.0*MagickEpsilon;
5809 linecap[3].point.y+=2.0*MagickEpsilon;
5810 linecap[4].primitive=UndefinedPrimitive;
5811 return(DrawPolygonPrimitive(image,draw_info,linecap));
5812}
5813
5814static MagickBooleanType DrawStrokePolygon(Image *image,
5815 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5816{
5817 DrawInfo
5818 *clone_info;
5819
5820 MagickBooleanType
5821 closed_path;
5822
5823 MagickStatusType
5824 status;
5825
5827 *stroke_polygon;
5828
5829 const PrimitiveInfo
5830 *p,
5831 *q;
5832
5833 /*
5834 Draw stroked polygon.
5835 */
5836 if (draw_info->debug != MagickFalse)
5837 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5838 " begin draw-stroke-polygon");
5839 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5840 clone_info->fill=draw_info->stroke;
5841 if (clone_info->fill_pattern != (Image *) NULL)
5842 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5843 if (clone_info->stroke_pattern != (Image *) NULL)
5844 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5845 MagickTrue,&clone_info->stroke_pattern->exception);
5846 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5847 clone_info->stroke_width=0.0;
5848 clone_info->fill_rule=NonZeroRule;
5849 status=MagickTrue;
5850 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates)
5851 {
5852 if (p->coordinates == 1)
5853 continue;
5854 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5855 if (stroke_polygon == (PrimitiveInfo *) NULL)
5856 {
5857 status=0;
5858 break;
5859 }
5860 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5861 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5862 if (status == 0)
5863 break;
5864 q=p+p->coordinates-1;
5865 closed_path=p->closed_subpath;
5866 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5867 {
5868 status&=DrawRoundLinecap(image,draw_info,p);
5869 status&=DrawRoundLinecap(image,draw_info,q);
5870 }
5871 }
5872 clone_info=DestroyDrawInfo(clone_info);
5873 if (draw_info->debug != MagickFalse)
5874 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5875 " end draw-stroke-polygon");
5876 return(status != 0 ? MagickTrue : MagickFalse);
5877}
5878
5879/*
5880%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5881% %
5882% %
5883% %
5884% G e t A f f i n e M a t r i x %
5885% %
5886% %
5887% %
5888%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5889%
5890% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5891% matrix.
5892%
5893% The format of the GetAffineMatrix method is:
5894%
5895% void GetAffineMatrix(AffineMatrix *affine_matrix)
5896%
5897% A description of each parameter follows:
5898%
5899% o affine_matrix: the affine matrix.
5900%
5901*/
5902MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5903{
5904 assert(affine_matrix != (AffineMatrix *) NULL);
5905 if (IsEventLogging() != MagickFalse)
5906 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5907 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5908 affine_matrix->sx=1.0;
5909 affine_matrix->sy=1.0;
5910}
5911
5912/*
5913%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5914% %
5915% %
5916% %
5917+ G e t D r a w I n f o %
5918% %
5919% %
5920% %
5921%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5922%
5923% GetDrawInfo() initializes draw_info to default values from image_info.
5924%
5925% The format of the GetDrawInfo method is:
5926%
5927% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5928%
5929% A description of each parameter follows:
5930%
5931% o image_info: the image info..
5932%
5933% o draw_info: the draw info.
5934%
5935*/
5936MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5937{
5938 char
5939 *next_token;
5940
5941 const char
5942 *option;
5943
5945 *exception;
5946
5947 /*
5948 Initialize draw attributes.
5949 */
5950 assert(draw_info != (DrawInfo *) NULL);
5951 if (IsEventLogging() != MagickFalse)
5952 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5953 (void) memset(draw_info,0,sizeof(*draw_info));
5954 draw_info->image_info=CloneImageInfo(image_info);
5955 GetAffineMatrix(&draw_info->affine);
5956 exception=AcquireExceptionInfo();
5957 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5958 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5959 draw_info->stroke_antialias=draw_info->image_info->antialias;
5960 draw_info->stroke_width=1.0;
5961 draw_info->fill_rule=EvenOddRule;
5962 draw_info->opacity=OpaqueOpacity;
5963 draw_info->fill_opacity=OpaqueOpacity;
5964 draw_info->stroke_opacity=OpaqueOpacity;
5965 draw_info->linecap=ButtCap;
5966 draw_info->linejoin=MiterJoin;
5967 draw_info->miterlimit=10;
5968 draw_info->decorate=NoDecoration;
5969 if (draw_info->image_info->font != (char *) NULL)
5970 draw_info->font=AcquireString(draw_info->image_info->font);
5971 if (draw_info->image_info->density != (char *) NULL)
5972 draw_info->density=AcquireString(draw_info->image_info->density);
5973 draw_info->text_antialias=draw_info->image_info->antialias;
5974 draw_info->pointsize=12.0;
5975 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5976 draw_info->pointsize=draw_info->image_info->pointsize;
5977 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5978 draw_info->border_color=draw_info->image_info->border_color;
5979 draw_info->compose=OverCompositeOp;
5980 if (draw_info->image_info->server_name != (char *) NULL)
5981 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5982 draw_info->render=MagickTrue;
5983 draw_info->clip_path=MagickFalse;
5984 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5985 MagickTrue : MagickFalse;
5986 option=GetImageOption(draw_info->image_info,"direction");
5987 if (option != (const char *) NULL)
5988 draw_info->direction=(DirectionType) ParseCommandOption(
5989 MagickDirectionOptions,MagickFalse,option);
5990 else
5991 draw_info->direction=UndefinedDirection;
5992 option=GetImageOption(draw_info->image_info,"encoding");
5993 if (option != (const char *) NULL)
5994 (void) CloneString(&draw_info->encoding,option);
5995 option=GetImageOption(draw_info->image_info,"family");
5996 if (option != (const char *) NULL)
5997 (void) CloneString(&draw_info->family,option);
5998 option=GetImageOption(draw_info->image_info,"fill");
5999 if (option != (const char *) NULL)
6000 (void) QueryColorDatabase(option,&draw_info->fill,exception);
6001 option=GetImageOption(draw_info->image_info,"gravity");
6002 if (option != (const char *) NULL)
6003 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6004 MagickFalse,option);
6005 option=GetImageOption(draw_info->image_info,"interline-spacing");
6006 if (option != (const char *) NULL)
6007 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6008 option=GetImageOption(draw_info->image_info,"interword-spacing");
6009 if (option != (const char *) NULL)
6010 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6011 option=GetImageOption(draw_info->image_info,"kerning");
6012 if (option != (const char *) NULL)
6013 draw_info->kerning=GetDrawValue(option,&next_token);
6014 option=GetImageOption(draw_info->image_info,"stroke");
6015 if (option != (const char *) NULL)
6016 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6017 option=GetImageOption(draw_info->image_info,"strokewidth");
6018 if (option != (const char *) NULL)
6019 draw_info->stroke_width=GetDrawValue(option,&next_token);
6020 option=GetImageOption(draw_info->image_info,"style");
6021 if (option != (const char *) NULL)
6022 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6023 MagickFalse,option);
6024 option=GetImageOption(draw_info->image_info,"undercolor");
6025 if (option != (const char *) NULL)
6026 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6027 option=GetImageOption(draw_info->image_info,"weight");
6028 if (option != (const char *) NULL)
6029 {
6030 ssize_t
6031 weight;
6032
6033 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6034 if (weight == -1)
6035 weight=(ssize_t) StringToUnsignedLong(option);
6036 draw_info->weight=(size_t) weight;
6037 }
6038 exception=DestroyExceptionInfo(exception);
6039 draw_info->signature=MagickCoreSignature;
6040}
6041
6042/*
6043%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6044% %
6045% %
6046% %
6047+ P e r m u t a t e %
6048% %
6049% %
6050% %
6051%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6052%
6053% Permutate() returns the permutation of the (n,k).
6054%
6055% The format of the Permutate method is:
6056%
6057% void Permutate(ssize_t n,ssize_t k)
6058%
6059% A description of each parameter follows:
6060%
6061% o n:
6062%
6063% o k:
6064%
6065%
6066*/
6067static inline double Permutate(const ssize_t n,const ssize_t k)
6068{
6069 double
6070 r;
6071
6072 ssize_t
6073 i;
6074
6075 r=1.0;
6076 for (i=k+1; i <= n; i++)
6077 r*=i;
6078 for (i=1; i <= (n-k); i++)
6079 r/=i;
6080 return(r);
6081}
6082
6083/*
6084%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6085% %
6086% %
6087% %
6088+ T r a c e P r i m i t i v e %
6089% %
6090% %
6091% %
6092%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6093%
6094% TracePrimitive is a collection of methods for generating graphic
6095% primitives such as arcs, ellipses, paths, etc.
6096%
6097*/
6098
6099static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6100 const PointInfo end,const PointInfo degrees)
6101{
6102 PointInfo
6103 center,
6104 radius;
6105
6106 center.x=0.5*(end.x+start.x);
6107 center.y=0.5*(end.y+start.y);
6108 radius.x=fabs(center.x-start.x);
6109 radius.y=fabs(center.y-start.y);
6110 return(TraceEllipse(mvg_info,center,radius,degrees));
6111}
6112
6113static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6114 const PointInfo end,const PointInfo arc,const double angle,
6115 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6116{
6117 double
6118 alpha,
6119 beta,
6120 delta,
6121 factor,
6122 gamma,
6123 theta;
6124
6125 MagickStatusType
6126 status;
6127
6128 PointInfo
6129 center,
6130 points[3],
6131 radii;
6132
6133 double
6134 cosine,
6135 sine;
6136
6138 *primitive_info;
6139
6141 *p;
6142
6143 ssize_t
6144 i;
6145
6146 size_t
6147 arc_segments;
6148
6149 ssize_t
6150 offset;
6151
6152 offset=mvg_info->offset;
6153 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6154 primitive_info->coordinates=0;
6155 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6156 (fabs(start.y-end.y) < MagickEpsilon))
6157 return(TracePoint(primitive_info,end));
6158 radii.x=fabs(arc.x);
6159 radii.y=fabs(arc.y);
6160 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6161 return(TraceLine(primitive_info,start,end));
6162 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6163 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6164 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6165 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6166 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6167 (radii.y*radii.y);
6168 if (delta < MagickEpsilon)
6169 return(TraceLine(primitive_info,start,end));
6170 if (delta > 1.0)
6171 {
6172 radii.x*=sqrt((double) delta);
6173 radii.y*=sqrt((double) delta);
6174 }
6175 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6176 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6177 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6178 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6179 alpha=points[1].x-points[0].x;
6180 beta=points[1].y-points[0].y;
6181 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6182 return(TraceLine(primitive_info,start,end));
6183 factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6184 if (factor <= 0.0)
6185 factor=0.0;
6186 else
6187 {
6188 factor=sqrt((double) factor);
6189 if (sweep == large_arc)
6190 factor=(-factor);
6191 }
6192 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6193 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6194 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6195 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6196 if ((theta < 0.0) && (sweep != MagickFalse))
6197 theta+=2.0*MagickPI;
6198 else
6199 if ((theta > 0.0) && (sweep == MagickFalse))
6200 theta-=2.0*MagickPI;
6201 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6202 MagickPI+MagickEpsilon)))));
6203 p=primitive_info;
6204 status=MagickTrue;
6205 for (i=0; i < (ssize_t) arc_segments; i++)
6206 {
6207 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6208 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6209 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6210 sin(fmod((double) beta,DegreesToRadians(360.0)));
6211 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6212 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6213 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6214 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6215 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6216 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6217 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6218 theta/arc_segments),DegreesToRadians(360.0))));
6219 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6220 theta/arc_segments),DegreesToRadians(360.0))));
6221 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6222 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6223 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6224 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6225 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6226 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6227 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6228 points[0].y);
6229 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6230 points[0].y);
6231 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6232 points[1].y);
6233 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6234 points[1].y);
6235 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6236 points[2].y);
6237 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6238 points[2].y);
6239 if (i == (ssize_t) (arc_segments-1))
6240 (p+3)->point=end;
6241 status&=TraceBezier(mvg_info,4);
6242 if (status == 0)
6243 break;
6244 p=(*mvg_info->primitive_info)+mvg_info->offset;
6245 mvg_info->offset+=p->coordinates;
6246 p+=p->coordinates;
6247 }
6248 if (status == 0)
6249 return(MagickFalse);
6250 mvg_info->offset=offset;
6251 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6252 primitive_info->coordinates=(size_t) (p-primitive_info);
6253 primitive_info->closed_subpath=MagickFalse;
6254 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6255 {
6256 p->primitive=primitive_info->primitive;
6257 p--;
6258 }
6259 return(MagickTrue);
6260}
6261
6262static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6263 const size_t number_coordinates)
6264{
6265 double
6266 alpha,
6267 *coefficients,
6268 weight;
6269
6270 PointInfo
6271 end,
6272 point,
6273 *points;
6274
6276 *primitive_info;
6277
6279 *p;
6280
6281 ssize_t
6282 i,
6283 j;
6284
6285 size_t
6286 control_points,
6287 quantum;
6288
6289 /*
6290 Allocate coefficients.
6291 */
6292 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6293 quantum=number_coordinates;
6294 for (i=0; i < (ssize_t) number_coordinates; i++)
6295 {
6296 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6297 {
6298 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6299 if (alpha > (double) MAGICK_SSIZE_MAX)
6300 {
6301 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6302 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6303 return(MagickFalse);
6304 }
6305 if (alpha > (double) quantum)
6306 quantum=(size_t) alpha;
6307 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6308 if (alpha > (double) MAGICK_SSIZE_MAX)
6309 {
6310 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6311 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6312 return(MagickFalse);
6313 }
6314 if (alpha > (double) quantum)
6315 quantum=(size_t) alpha;
6316 }
6317 }
6318 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6319 sizeof(*coefficients));
6320 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6321 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6322 sizeof(*points));
6323 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6324 {
6325 if (points != (PointInfo *) NULL)
6326 points=(PointInfo *) RelinquishMagickMemory(points);
6327 if (coefficients != (double *) NULL)
6328 coefficients=(double *) RelinquishMagickMemory(coefficients);
6329 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6330 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6331 return(MagickFalse);
6332 }
6333 control_points=quantum*number_coordinates;
6334 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6335 {
6336 points=(PointInfo *) RelinquishMagickMemory(points);
6337 coefficients=(double *) RelinquishMagickMemory(coefficients);
6338 return(MagickFalse);
6339 }
6340 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6341 /*
6342 Compute bezier points.
6343 */
6344 end=primitive_info[number_coordinates-1].point;
6345 for (i=0; i < (ssize_t) number_coordinates; i++)
6346 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6347 weight=0.0;
6348 for (i=0; i < (ssize_t) control_points; i++)
6349 {
6350 p=primitive_info;
6351 point.x=0.0;
6352 point.y=0.0;
6353 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6354 for (j=0; j < (ssize_t) number_coordinates; j++)
6355 {
6356 point.x+=alpha*coefficients[j]*p->point.x;
6357 point.y+=alpha*coefficients[j]*p->point.y;
6358 alpha*=weight/(1.0-weight);
6359 p++;
6360 }
6361 points[i]=point;
6362 weight+=1.0/control_points;
6363 }
6364 /*
6365 Bezier curves are just short segmented polys.
6366 */
6367 p=primitive_info;
6368 for (i=0; i < (ssize_t) control_points; i++)
6369 {
6370 if (TracePoint(p,points[i]) == MagickFalse)
6371 {
6372 points=(PointInfo *) RelinquishMagickMemory(points);
6373 coefficients=(double *) RelinquishMagickMemory(coefficients);
6374 return(MagickFalse);
6375 }
6376 p+=p->coordinates;
6377 }
6378 if (TracePoint(p,end) == MagickFalse)
6379 {
6380 points=(PointInfo *) RelinquishMagickMemory(points);
6381 coefficients=(double *) RelinquishMagickMemory(coefficients);
6382 return(MagickFalse);
6383 }
6384 p+=p->coordinates;
6385 primitive_info->coordinates=(size_t) (p-primitive_info);
6386 primitive_info->closed_subpath=MagickFalse;
6387 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6388 {
6389 p->primitive=primitive_info->primitive;
6390 p--;
6391 }
6392 points=(PointInfo *) RelinquishMagickMemory(points);
6393 coefficients=(double *) RelinquishMagickMemory(coefficients);
6394 return(MagickTrue);
6395}
6396
6397static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6398 const PointInfo end)
6399{
6400 double
6401 alpha,
6402 beta,
6403 radius;
6404
6405 PointInfo
6406 offset,
6407 degrees;
6408
6409 alpha=end.x-start.x;
6410 beta=end.y-start.y;
6411 radius=hypot((double) alpha,(double) beta);
6412 offset.x=(double) radius;
6413 offset.y=(double) radius;
6414 degrees.x=0.0;
6415 degrees.y=360.0;
6416 return(TraceEllipse(mvg_info,start,offset,degrees));
6417}
6418
6419static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6420 const PointInfo radii,const PointInfo arc)
6421{
6422 double
6423 coordinates,
6424 delta,
6425 step,
6426 x,
6427 y;
6428
6429 PointInfo
6430 angle,
6431 point;
6432
6434 *primitive_info;
6435
6437 *p;
6438
6439 ssize_t
6440 i;
6441
6442 /*
6443 Ellipses are just short segmented polys.
6444 */
6445 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6446 primitive_info->coordinates=0;
6447 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6448 return(MagickTrue);
6449 delta=2.0*PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6450 step=MagickPI/8.0;
6451 if ((delta >= 0.0) && (delta < (MagickPI/8.0)))
6452 step=MagickPI/4.0/(MagickPI*PerceptibleReciprocal(delta)/2.0);
6453 angle.x=DegreesToRadians(arc.x);
6454 y=arc.y;
6455 while (y < arc.x)
6456 y+=360.0;
6457 angle.y=DegreesToRadians(y);
6458 coordinates=ceil((angle.y-angle.x)/step+1.0);
6459 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6460 return(MagickFalse);
6461 i=0;
6462 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6463 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6464 {
6465 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6466 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6467 if (i++ >= (ssize_t) coordinates)
6468 break;
6469 if (TracePoint(p,point) == MagickFalse)
6470 return(MagickFalse);
6471 p+=p->coordinates;
6472 }
6473 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6474 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6475 if (TracePoint(p,point) == MagickFalse)
6476 return(MagickFalse);
6477 p+=p->coordinates;
6478 primitive_info->coordinates=(size_t) (p-primitive_info);
6479 primitive_info->closed_subpath=MagickFalse;
6480 x=fabs(primitive_info[0].point.x-
6481 primitive_info[primitive_info->coordinates-1].point.x);
6482 y=fabs(primitive_info[0].point.y-
6483 primitive_info[primitive_info->coordinates-1].point.y);
6484 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6485 primitive_info->closed_subpath=MagickTrue;
6486 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6487 {
6488 p->primitive=primitive_info->primitive;
6489 p--;
6490 }
6491 return(MagickTrue);
6492}
6493
6494static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6495 const PointInfo start,const PointInfo end)
6496{
6497 if (TracePoint(primitive_info,start) == MagickFalse)
6498 return(MagickFalse);
6499 if (TracePoint(primitive_info+1,end) == MagickFalse)
6500 return(MagickFalse);
6501 (primitive_info+1)->primitive=primitive_info->primitive;
6502 primitive_info->coordinates=2;
6503 primitive_info->closed_subpath=MagickFalse;
6504 return(MagickTrue);
6505}
6506
6507static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6508{
6509 char
6510 *next_token,
6511 token[MaxTextExtent] = "";
6512
6513 const char
6514 *p;
6515
6516 double
6517 x,
6518 y;
6519
6520 int
6521 attribute,
6522 last_attribute;
6523
6524 MagickStatusType
6525 status;
6526
6527 PointInfo
6528 end = {0.0, 0.0},
6529 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6530 point = {0.0, 0.0},
6531 start = {0.0, 0.0};
6532
6534 *primitive_info;
6535
6536 PrimitiveType
6537 primitive_type;
6538
6540 *q;
6541
6542 ssize_t
6543 i;
6544
6545 size_t
6546 number_coordinates,
6547 z_count;
6548
6549 ssize_t
6550 subpath_offset;
6551
6552 subpath_offset=mvg_info->offset;
6553 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6554 status=MagickTrue;
6555 attribute=0;
6556 number_coordinates=0;
6557 z_count=0;
6558 *token='\0';
6559 primitive_type=primitive_info->primitive;
6560 q=primitive_info;
6561 for (p=path; *p != '\0'; )
6562 {
6563 if (status == MagickFalse)
6564 break;
6565 while (isspace((int) ((unsigned char) *p)) != 0)
6566 p++;
6567 if (*p == '\0')
6568 break;
6569 last_attribute=attribute;
6570 attribute=(int) (*p++);
6571 switch (attribute)
6572 {
6573 case 'a':
6574 case 'A':
6575 {
6576 double
6577 angle = 0.0;
6578
6579 MagickBooleanType
6580 large_arc = MagickFalse,
6581 sweep = MagickFalse;
6582
6583 PointInfo
6584 arc = {0.0, 0.0};
6585
6586 /*
6587 Elliptical arc.
6588 */
6589 do
6590 {
6591 (void) GetNextToken(p,&p,MaxTextExtent,token);
6592 if (*token == ',')
6593 (void) GetNextToken(p,&p,MaxTextExtent,token);
6594 arc.x=GetDrawValue(token,&next_token);
6595 if (token == next_token)
6596 ThrowPointExpectedException(image,token);
6597 (void) GetNextToken(p,&p,MaxTextExtent,token);
6598 if (*token == ',')
6599 (void) GetNextToken(p,&p,MaxTextExtent,token);
6600 arc.y=GetDrawValue(token,&next_token);
6601 if (token == next_token)
6602 ThrowPointExpectedException(image,token);
6603 (void) GetNextToken(p,&p,MaxTextExtent,token);
6604 if (*token == ',')
6605 (void) GetNextToken(p,&p,MaxTextExtent,token);
6606 angle=GetDrawValue(token,&next_token);
6607 if (token == next_token)
6608 ThrowPointExpectedException(image,token);
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 if (*token == ',')
6611 (void) GetNextToken(p,&p,MaxTextExtent,token);
6612 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6613 (void) GetNextToken(p,&p,MaxTextExtent,token);
6614 if (*token == ',')
6615 (void) GetNextToken(p,&p,MaxTextExtent,token);
6616 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6617 if (*token == ',')
6618 (void) GetNextToken(p,&p,MaxTextExtent,token);
6619 (void) GetNextToken(p,&p,MaxTextExtent,token);
6620 if (*token == ',')
6621 (void) GetNextToken(p,&p,MaxTextExtent,token);
6622 x=GetDrawValue(token,&next_token);
6623 if (token == next_token)
6624 ThrowPointExpectedException(image,token);
6625 (void) GetNextToken(p,&p,MaxTextExtent,token);
6626 if (*token == ',')
6627 (void) GetNextToken(p,&p,MaxTextExtent,token);
6628 y=GetDrawValue(token,&next_token);
6629 if (token == next_token)
6630 ThrowPointExpectedException(image,token);
6631 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6632 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6633 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6634 q=(*mvg_info->primitive_info)+mvg_info->offset;
6635 mvg_info->offset+=q->coordinates;
6636 q+=q->coordinates;
6637 point=end;
6638 while (isspace((int) ((unsigned char) *p)) != 0)
6639 p++;
6640 if (*p == ',')
6641 p++;
6642 } while (IsPoint(p) != MagickFalse);
6643 break;
6644 }
6645 case 'c':
6646 case 'C':
6647 {
6648 /*
6649 Cubic Bézier curve.
6650 */
6651 do
6652 {
6653 points[0]=point;
6654 for (i=1; i < 4; i++)
6655 {
6656 (void) GetNextToken(p,&p,MaxTextExtent,token);
6657 if (*token == ',')
6658 (void) GetNextToken(p,&p,MaxTextExtent,token);
6659 x=GetDrawValue(token,&next_token);
6660 if (token == next_token)
6661 ThrowPointExpectedException(image,token);
6662 (void) GetNextToken(p,&p,MaxTextExtent,token);
6663 if (*token == ',')
6664 (void) GetNextToken(p,&p,MaxTextExtent,token);
6665 y=GetDrawValue(token,&next_token);
6666 if (token == next_token)
6667 ThrowPointExpectedException(image,token);
6668 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6669 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6670 points[i]=end;
6671 }
6672 for (i=0; i < 4; i++)
6673 (q+i)->point=points[i];
6674 if (TraceBezier(mvg_info,4) == MagickFalse)
6675 return(-1);
6676 q=(*mvg_info->primitive_info)+mvg_info->offset;
6677 mvg_info->offset+=q->coordinates;
6678 q+=q->coordinates;
6679 point=end;
6680 while (isspace((int) ((unsigned char) *p)) != 0)
6681 p++;
6682 if (*p == ',')
6683 p++;
6684 } while (IsPoint(p) != MagickFalse);
6685 break;
6686 }
6687 case 'H':
6688 case 'h':
6689 {
6690 do
6691 {
6692 (void) GetNextToken(p,&p,MaxTextExtent,token);
6693 if (*token == ',')
6694 (void) GetNextToken(p,&p,MaxTextExtent,token);
6695 x=GetDrawValue(token,&next_token);
6696 if (token == next_token)
6697 ThrowPointExpectedException(image,token);
6698 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6699 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6700 return(-1);
6701 q=(*mvg_info->primitive_info)+mvg_info->offset;
6702 if (TracePoint(q,point) == MagickFalse)
6703 return(-1);
6704 mvg_info->offset+=q->coordinates;
6705 q+=q->coordinates;
6706 while (isspace((int) ((unsigned char) *p)) != 0)
6707 p++;
6708 if (*p == ',')
6709 p++;
6710 } while (IsPoint(p) != MagickFalse);
6711 break;
6712 }
6713 case 'l':
6714 case 'L':
6715 {
6716 /*
6717 Line to.
6718 */
6719 do
6720 {
6721 (void) GetNextToken(p,&p,MaxTextExtent,token);
6722 if (*token == ',')
6723 (void) GetNextToken(p,&p,MaxTextExtent,token);
6724 x=GetDrawValue(token,&next_token);
6725 if (token == next_token)
6726 ThrowPointExpectedException(image,token);
6727 (void) GetNextToken(p,&p,MaxTextExtent,token);
6728 if (*token == ',')
6729 (void) GetNextToken(p,&p,MaxTextExtent,token);
6730 y=GetDrawValue(token,&next_token);
6731 if (token == next_token)
6732 ThrowPointExpectedException(image,token);
6733 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6734 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6735 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6736 return(-1);
6737 q=(*mvg_info->primitive_info)+mvg_info->offset;
6738 if (TracePoint(q,point) == MagickFalse)
6739 return(-1);
6740 mvg_info->offset+=q->coordinates;
6741 q+=q->coordinates;
6742 while (isspace((int) ((unsigned char) *p)) != 0)
6743 p++;
6744 if (*p == ',')
6745 p++;
6746 } while (IsPoint(p) != MagickFalse);
6747 break;
6748 }
6749 case 'M':
6750 case 'm':
6751 {
6752 /*
6753 Move to.
6754 */
6755 if (mvg_info->offset != subpath_offset)
6756 {
6757 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6758 primitive_info->coordinates=(size_t) (q-primitive_info);
6759 number_coordinates+=primitive_info->coordinates;
6760 primitive_info=q;
6761 subpath_offset=mvg_info->offset;
6762 }
6763 i=0;
6764 do
6765 {
6766 (void) GetNextToken(p,&p,MaxTextExtent,token);
6767 if (*token == ',')
6768 (void) GetNextToken(p,&p,MaxTextExtent,token);
6769 x=GetDrawValue(token,&next_token);
6770 if (token == next_token)
6771 ThrowPointExpectedException(image,token);
6772 (void) GetNextToken(p,&p,MaxTextExtent,token);
6773 if (*token == ',')
6774 (void) GetNextToken(p,&p,MaxTextExtent,token);
6775 y=GetDrawValue(token,&next_token);
6776 if (token == next_token)
6777 ThrowPointExpectedException(image,token);
6778 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6779 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6780 if (i == 0)
6781 start=point;
6782 i++;
6783 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6784 return(-1);
6785 q=(*mvg_info->primitive_info)+mvg_info->offset;
6786 if (TracePoint(q,point) == MagickFalse)
6787 return(-1);
6788 mvg_info->offset+=q->coordinates;
6789 q+=q->coordinates;
6790 while (isspace((int) ((unsigned char) *p)) != 0)
6791 p++;
6792 if (*p == ',')
6793 p++;
6794 } while (IsPoint(p) != MagickFalse);
6795 break;
6796 }
6797 case 'q':
6798 case 'Q':
6799 {
6800 /*
6801 Quadratic Bézier curve.
6802 */
6803 do
6804 {
6805 points[0]=point;
6806 for (i=1; i < 3; i++)
6807 {
6808 (void) GetNextToken(p,&p,MaxTextExtent,token);
6809 if (*token == ',')
6810 (void) GetNextToken(p,&p,MaxTextExtent,token);
6811 x=GetDrawValue(token,&next_token);
6812 if (token == next_token)
6813 ThrowPointExpectedException(image,token);
6814 (void) GetNextToken(p,&p,MaxTextExtent,token);
6815 if (*token == ',')
6816 (void) GetNextToken(p,&p,MaxTextExtent,token);
6817 y=GetDrawValue(token,&next_token);
6818 if (token == next_token)
6819 ThrowPointExpectedException(image,token);
6820 if (*p == ',')
6821 p++;
6822 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6823 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6824 points[i]=end;
6825 }
6826 for (i=0; i < 3; i++)
6827 (q+i)->point=points[i];
6828 if (TraceBezier(mvg_info,3) == MagickFalse)
6829 return(-1);
6830 q=(*mvg_info->primitive_info)+mvg_info->offset;
6831 mvg_info->offset+=q->coordinates;
6832 q+=q->coordinates;
6833 point=end;
6834 while (isspace((int) ((unsigned char) *p)) != 0)
6835 p++;
6836 if (*p == ',')
6837 p++;
6838 } while (IsPoint(p) != MagickFalse);
6839 break;
6840 }
6841 case 's':
6842 case 'S':
6843 {
6844 /*
6845 Cubic Bézier curve.
6846 */
6847 do
6848 {
6849 points[0]=points[3];
6850 points[1].x=2.0*points[3].x-points[2].x;
6851 points[1].y=2.0*points[3].y-points[2].y;
6852 for (i=2; i < 4; i++)
6853 {
6854 (void) GetNextToken(p,&p,MaxTextExtent,token);
6855 if (*token == ',')
6856 (void) GetNextToken(p,&p,MaxTextExtent,token);
6857 x=GetDrawValue(token,&next_token);
6858 if (token == next_token)
6859 ThrowPointExpectedException(image,token);
6860 (void) GetNextToken(p,&p,MaxTextExtent,token);
6861 if (*token == ',')
6862 (void) GetNextToken(p,&p,MaxTextExtent,token);
6863 y=GetDrawValue(token,&next_token);
6864 if (token == next_token)
6865 ThrowPointExpectedException(image,token);
6866 if (*p == ',')
6867 p++;
6868 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6869 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6870 points[i]=end;
6871 }
6872 if (strchr("CcSs",last_attribute) == (char *) NULL)
6873 {
6874 points[0]=point;
6875 points[1]=point;
6876 }
6877 for (i=0; i < 4; i++)
6878 (q+i)->point=points[i];
6879 if (TraceBezier(mvg_info,4) == MagickFalse)
6880 return(-1);
6881 q=(*mvg_info->primitive_info)+mvg_info->offset;
6882 mvg_info->offset+=q->coordinates;
6883 q+=q->coordinates;
6884 point=end;
6885 last_attribute=attribute;
6886 while (isspace((int) ((unsigned char) *p)) != 0)
6887 p++;
6888 if (*p == ',')
6889 p++;
6890 } while (IsPoint(p) != MagickFalse);
6891 break;
6892 }
6893 case 't':
6894 case 'T':
6895 {
6896 /*
6897 Quadratic Bézier curve.
6898 */
6899 do
6900 {
6901 points[0]=points[2];
6902 points[1].x=2.0*points[2].x-points[1].x;
6903 points[1].y=2.0*points[2].y-points[1].y;
6904 for (i=2; i < 3; i++)
6905 {
6906 (void) GetNextToken(p,&p,MaxTextExtent,token);
6907 if (*token == ',')
6908 (void) GetNextToken(p,&p,MaxTextExtent,token);
6909 x=GetDrawValue(token,&next_token);
6910 if (token == next_token)
6911 ThrowPointExpectedException(image,token);
6912 (void) GetNextToken(p,&p,MaxTextExtent,token);
6913 if (*token == ',')
6914 (void) GetNextToken(p,&p,MaxTextExtent,token);
6915 y=GetDrawValue(token,&next_token);
6916 if (token == next_token)
6917 ThrowPointExpectedException(image,token);
6918 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6919 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6920 points[i]=end;
6921 }
6922 if (status == MagickFalse)
6923 break;
6924 if (strchr("QqTt",last_attribute) == (char *) NULL)
6925 {
6926 points[0]=point;
6927 points[1]=point;
6928 }
6929 for (i=0; i < 3; i++)
6930 (q+i)->point=points[i];
6931 if (TraceBezier(mvg_info,3) == MagickFalse)
6932 return(-1);
6933 q=(*mvg_info->primitive_info)+mvg_info->offset;
6934 mvg_info->offset+=q->coordinates;
6935 q+=q->coordinates;
6936 point=end;
6937 last_attribute=attribute;
6938 while (isspace((int) ((unsigned char) *p)) != 0)
6939 p++;
6940 if (*p == ',')
6941 p++;
6942 } while (IsPoint(p) != MagickFalse);
6943 break;
6944 }
6945 case 'v':
6946 case 'V':
6947 {
6948 /*
6949 Line to.
6950 */
6951 do
6952 {
6953 (void) GetNextToken(p,&p,MaxTextExtent,token);
6954 if (*token == ',')
6955 (void) GetNextToken(p,&p,MaxTextExtent,token);
6956 y=GetDrawValue(token,&next_token);
6957 if (token == next_token)
6958 ThrowPointExpectedException(image,token);
6959 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6960 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6961 return(-1);
6962 q=(*mvg_info->primitive_info)+mvg_info->offset;
6963 if (TracePoint(q,point) == MagickFalse)
6964 return(-1);
6965 mvg_info->offset+=q->coordinates;
6966 q+=q->coordinates;
6967 while (isspace((int) ((unsigned char) *p)) != 0)
6968 p++;
6969 if (*p == ',')
6970 p++;
6971 } while (IsPoint(p) != MagickFalse);
6972 break;
6973 }
6974 case 'z':
6975 case 'Z':
6976 {
6977 /*
6978 Close path.
6979 */
6980 point=start;
6981 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6982 return(-1);
6983 q=(*mvg_info->primitive_info)+mvg_info->offset;
6984 if (TracePoint(q,point) == MagickFalse)
6985 return(-1);
6986 mvg_info->offset+=q->coordinates;
6987 q+=q->coordinates;
6988 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6989 primitive_info->coordinates=(size_t) (q-primitive_info);
6990 primitive_info->closed_subpath=MagickTrue;
6991 number_coordinates+=primitive_info->coordinates;
6992 primitive_info=q;
6993 subpath_offset=mvg_info->offset;
6994 z_count++;
6995 break;
6996 }
6997 default:
6998 {
6999 ThrowPointExpectedException(image,token);
7000 break;
7001 }
7002 }
7003 }
7004 if (status == MagickFalse)
7005 return(-1);
7006 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7007 primitive_info->coordinates=(size_t) (q-primitive_info);
7008 number_coordinates+=primitive_info->coordinates;
7009 for (i=0; i < (ssize_t) number_coordinates; i++)
7010 {
7011 q--;
7012 q->primitive=primitive_type;
7013 if (z_count > 1)
7014 q->method=FillToBorderMethod;
7015 }
7016 q=primitive_info;
7017 return((ssize_t) number_coordinates);
7018}
7019
7020static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7021 const PointInfo start,const PointInfo end)
7022{
7023 PointInfo
7024 point;
7025
7027 *p;
7028
7029 ssize_t
7030 i;
7031
7032 p=primitive_info;
7033 if (TracePoint(p,start) == MagickFalse)
7034 return(MagickFalse);
7035 p+=p->coordinates;
7036 point.x=start.x;
7037 point.y=end.y;
7038 if (TracePoint(p,point) == MagickFalse)
7039 return(MagickFalse);
7040 p+=p->coordinates;
7041 if (TracePoint(p,end) == MagickFalse)
7042 return(MagickFalse);
7043 p+=p->coordinates;
7044 point.x=end.x;
7045 point.y=start.y;
7046 if (TracePoint(p,point) == MagickFalse)
7047 return(MagickFalse);
7048 p+=p->coordinates;
7049 if (TracePoint(p,start) == MagickFalse)
7050 return(MagickFalse);
7051 p+=p->coordinates;
7052 primitive_info->coordinates=(size_t) (p-primitive_info);
7053 primitive_info->closed_subpath=MagickTrue;
7054 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7055 {
7056 p->primitive=primitive_info->primitive;
7057 p--;
7058 }
7059 return(MagickTrue);
7060}
7061
7062static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7063 const PointInfo start,const PointInfo end,PointInfo arc)
7064{
7065 PointInfo
7066 degrees,
7067 point,
7068 segment;
7069
7071 *primitive_info;
7072
7074 *p;
7075
7076 ssize_t
7077 i;
7078
7079 ssize_t
7080 offset;
7081
7082 offset=mvg_info->offset;
7083 segment.x=fabs(end.x-start.x);
7084 segment.y=fabs(end.y-start.y);
7085 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7086 {
7087 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7088 return(MagickTrue);
7089 }
7090 if (arc.x > (0.5*segment.x))
7091 arc.x=0.5*segment.x;
7092 if (arc.y > (0.5*segment.y))
7093 arc.y=0.5*segment.y;
7094 point.x=start.x+segment.x-arc.x;
7095 point.y=start.y+arc.y;
7096 degrees.x=270.0;
7097 degrees.y=360.0;
7098 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7099 return(MagickFalse);
7100 p=(*mvg_info->primitive_info)+mvg_info->offset;
7101 mvg_info->offset+=p->coordinates;
7102 point.x=start.x+segment.x-arc.x;
7103 point.y=start.y+segment.y-arc.y;
7104 degrees.x=0.0;
7105 degrees.y=90.0;
7106 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7107 return(MagickFalse);
7108 p=(*mvg_info->primitive_info)+mvg_info->offset;
7109 mvg_info->offset+=p->coordinates;
7110 point.x=start.x+arc.x;
7111 point.y=start.y+segment.y-arc.y;
7112 degrees.x=90.0;
7113 degrees.y=180.0;
7114 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7115 return(MagickFalse);
7116 p=(*mvg_info->primitive_info)+mvg_info->offset;
7117 mvg_info->offset+=p->coordinates;
7118 point.x=start.x+arc.x;
7119 point.y=start.y+arc.y;
7120 degrees.x=180.0;
7121 degrees.y=270.0;
7122 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7123 return(MagickFalse);
7124 p=(*mvg_info->primitive_info)+mvg_info->offset;
7125 mvg_info->offset+=p->coordinates;
7126 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7127 return(MagickFalse);
7128 p=(*mvg_info->primitive_info)+mvg_info->offset;
7129 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7130 return(MagickFalse);
7131 p+=p->coordinates;
7132 mvg_info->offset=offset;
7133 primitive_info=(*mvg_info->primitive_info)+offset;
7134 primitive_info->coordinates=(size_t) (p-primitive_info);
7135 primitive_info->closed_subpath=MagickTrue;
7136 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7137 {
7138 p->primitive=primitive_info->primitive;
7139 p--;
7140 }
7141 return(MagickTrue);
7142}
7143
7144static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7145 const size_t number_vertices,const double offset)
7146{
7147 double
7148 distance;
7149
7150 double
7151 dx,
7152 dy;
7153
7154 ssize_t
7155 i;
7156
7157 ssize_t
7158 j;
7159
7160 dx=0.0;
7161 dy=0.0;
7162 for (i=1; i < (ssize_t) number_vertices; i++)
7163 {
7164 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7165 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7166 if ((fabs((double) dx) >= MagickEpsilon) ||
7167 (fabs((double) dy) >= MagickEpsilon))
7168 break;
7169 }
7170 if (i == (ssize_t) number_vertices)
7171 i=(ssize_t) number_vertices-1L;
7172 distance=hypot((double) dx,(double) dy);
7173 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7174 dx*(distance+offset)/distance);
7175 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7176 dy*(distance+offset)/distance);
7177 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7178 {
7179 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7180 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7181 if ((fabs((double) dx) >= MagickEpsilon) ||
7182 (fabs((double) dy) >= MagickEpsilon))
7183 break;
7184 }
7185 distance=hypot((double) dx,(double) dy);
7186 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7187 dx*(distance+offset)/distance);
7188 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7189 dy*(distance+offset)/distance);
7190 return(MagickTrue);
7191}
7192
7193static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7194 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7195{
7196#define MaxStrokePad (6*BezierQuantum+360)
7197#define CheckPathExtent(pad_p,pad_q) \
7198{ \
7199 if ((pad_p) > MaxBezierCoordinates) \
7200 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7201 else \
7202 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7203 { \
7204 if (~extent_p < (pad_p)) \
7205 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7206 else \
7207 { \
7208 extent_p+=(pad_p); \
7209 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7210 MaxStrokePad,sizeof(*stroke_p)); \
7211 } \
7212 } \
7213 if ((pad_q) > MaxBezierCoordinates) \
7214 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7215 else \
7216 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7217 { \
7218 if (~extent_q < (pad_q)) \
7219 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7220 else \
7221 { \
7222 extent_q+=(pad_q); \
7223 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7224 MaxStrokePad,sizeof(*stroke_q)); \
7225 } \
7226 } \
7227 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7228 { \
7229 if (stroke_p != (PointInfo *) NULL) \
7230 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7231 if (stroke_q != (PointInfo *) NULL) \
7232 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7233 polygon_primitive=(PrimitiveInfo *) \
7234 RelinquishMagickMemory(polygon_primitive); \
7235 (void) ThrowMagickException(exception,GetMagickModule(), \
7236 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7237 return((PrimitiveInfo *) NULL); \
7238 } \
7239}
7240
7241 typedef struct _StrokeSegment
7242 {
7243 double
7244 p,
7245 q;
7246 } StrokeSegment;
7247
7248 double
7249 delta_theta,
7250 dot_product,
7251 mid,
7252 miterlimit;
7253
7254 MagickBooleanType
7255 closed_path;
7256
7257 PointInfo
7258 box_p[5],
7259 box_q[5],
7260 center,
7261 offset,
7262 *stroke_p,
7263 *stroke_q;
7264
7266 *polygon_primitive,
7267 *stroke_polygon;
7268
7269 ssize_t
7270 i;
7271
7272 size_t
7273 arc_segments,
7274 extent_p,
7275 extent_q,
7276 number_vertices;
7277
7278 ssize_t
7279 j,
7280 n,
7281 p,
7282 q;
7283
7284 StrokeSegment
7285 dx = {0.0, 0.0},
7286 dy = {0.0, 0.0},
7287 inverse_slope = {0.0, 0.0},
7288 slope = {0.0, 0.0},
7289 theta = {0.0, 0.0};
7290
7291 /*
7292 Allocate paths.
7293 */
7294 number_vertices=primitive_info->coordinates;
7295 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7296 number_vertices+2UL,sizeof(*polygon_primitive));
7297 if (polygon_primitive == (PrimitiveInfo *) NULL)
7298 {
7299 (void) ThrowMagickException(exception,GetMagickModule(),
7300 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7301 return((PrimitiveInfo *) NULL);
7302 }
7303 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7304 sizeof(*polygon_primitive));
7305 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7306 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7307 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7308 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7309 if (((draw_info->linejoin == RoundJoin) ||
7310 (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7311 {
7312 polygon_primitive[number_vertices]=primitive_info[1];
7313 number_vertices++;
7314 }
7315 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7316 /*
7317 Compute the slope for the first line segment, p.
7318 */
7319 dx.p=0.0;
7320 dy.p=0.0;
7321 for (n=1; n < (ssize_t) number_vertices; n++)
7322 {
7323 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7324 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7325 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7326 break;
7327 }
7328 if (n == (ssize_t) number_vertices)
7329 {
7330 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7331 {
7332 /*
7333 Zero length subpath.
7334 */
7335 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7336 sizeof(*stroke_polygon));
7337 stroke_polygon[0]=polygon_primitive[0];
7338 stroke_polygon[0].coordinates=0;
7339 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7340 polygon_primitive);
7341 return(stroke_polygon);
7342 }
7343 n=(ssize_t) number_vertices-1L;
7344 }
7345 extent_p=2*number_vertices;
7346 extent_q=2*number_vertices;
7347 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7348 sizeof(*stroke_p));
7349 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7350 sizeof(*stroke_q));
7351 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7352 {
7353 if (stroke_p != (PointInfo *) NULL)
7354 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7355 if (stroke_q != (PointInfo *) NULL)
7356 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7357 polygon_primitive=(PrimitiveInfo *)
7358 RelinquishMagickMemory(polygon_primitive);
7359 (void) ThrowMagickException(exception,GetMagickModule(),
7360 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7361 return((PrimitiveInfo *) NULL);
7362 }
7363 slope.p=0.0;
7364 inverse_slope.p=0.0;
7365 if (fabs(dx.p) < MagickEpsilon)
7366 {
7367 if (dx.p >= 0.0)
7368 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7369 else
7370 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7371 }
7372 else
7373 if (fabs(dy.p) < MagickEpsilon)
7374 {
7375 if (dy.p >= 0.0)
7376 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7377 else
7378 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7379 }
7380 else
7381 {
7382 slope.p=dy.p/dx.p;
7383 inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7384 }
7385 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7386 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7387 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7388 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7389 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7390 offset.y=(double) (offset.x*inverse_slope.p);
7391 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7392 {
7393 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7394 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7395 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7396 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7397 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7398 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7399 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7400 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7401 }
7402 else
7403 {
7404 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7405 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7406 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7407 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7408 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7409 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7410 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7411 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7412 }
7413 /*
7414 Create strokes for the line join attribute: bevel, miter, round.
7415 */
7416 p=0;
7417 q=0;
7418 stroke_q[p++]=box_q[0];
7419 stroke_p[q++]=box_p[0];
7420 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7421 {
7422 /*
7423 Compute the slope for this line segment, q.
7424 */
7425 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7426 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7427 dot_product=dx.q*dx.q+dy.q*dy.q;
7428 if (dot_product < 0.25)
7429 continue;
7430 slope.q=0.0;
7431 inverse_slope.q=0.0;
7432 if (fabs(dx.q) < MagickEpsilon)
7433 {
7434 if (dx.q >= 0.0)
7435 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7436 else
7437 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7438 }
7439 else
7440 if (fabs(dy.q) < MagickEpsilon)
7441 {
7442 if (dy.q >= 0.0)
7443 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7444 else
7445 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7446 }
7447 else
7448 {
7449 slope.q=dy.q/dx.q;
7450 inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7451 }
7452 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7453 offset.y=(double) (offset.x*inverse_slope.q);
7454 dot_product=dy.q*offset.x-dx.q*offset.y;
7455 if (dot_product > 0.0)
7456 {
7457 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7458 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7459 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7460 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7461 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7462 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7463 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7464 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7465 }
7466 else
7467 {
7468 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7469 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7470 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7471 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7472 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7473 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7474 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7475 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7476 }
7477 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7478 {
7479 box_p[4]=box_p[1];
7480 box_q[4]=box_q[1];
7481 }
7482 else
7483 {
7484 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7485 box_p[3].y)/(slope.p-slope.q));
7486 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7487 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7488 box_q[3].y)/(slope.p-slope.q));
7489 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7490 }
7491 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7492 dot_product=dx.q*dy.p-dx.p*dy.q;
7493 if (dot_product <= 0.0)
7494 switch (draw_info->linejoin)
7495 {
7496 case BevelJoin:
7497 {
7498 stroke_q[q++]=box_q[1];
7499 stroke_q[q++]=box_q[2];
7500 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7501 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7502 if (dot_product <= miterlimit)
7503 stroke_p[p++]=box_p[4];
7504 else
7505 {
7506 stroke_p[p++]=box_p[1];
7507 stroke_p[p++]=box_p[2];
7508 }
7509 break;
7510 }
7511 case MiterJoin:
7512 {
7513 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7514 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7515 if (dot_product <= miterlimit)
7516 {
7517 stroke_q[q++]=box_q[4];
7518 stroke_p[p++]=box_p[4];
7519 }
7520 else
7521 {
7522 stroke_q[q++]=box_q[1];
7523 stroke_q[q++]=box_q[2];
7524 stroke_p[p++]=box_p[1];
7525 stroke_p[p++]=box_p[2];
7526 }
7527 break;
7528 }
7529 case RoundJoin:
7530 {
7531 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7532 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7533 if (dot_product <= miterlimit)
7534 stroke_p[p++]=box_p[4];
7535 else
7536 {
7537 stroke_p[p++]=box_p[1];
7538 stroke_p[p++]=box_p[2];
7539 }
7540 center=polygon_primitive[n].point;
7541 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7542 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7543 if (theta.q < theta.p)
7544 theta.q+=2.0*MagickPI;
7545 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7546 theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7547 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7548 stroke_q[q].x=box_q[1].x;
7549 stroke_q[q].y=box_q[1].y;
7550 q++;
7551 for (j=1; j < (ssize_t) arc_segments; j++)
7552 {
7553 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7554 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7555 (theta.p+delta_theta),DegreesToRadians(360.0))));
7556 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7557 (theta.p+delta_theta),DegreesToRadians(360.0))));
7558 q++;
7559 }
7560 stroke_q[q++]=box_q[2];
7561 break;
7562 }
7563 default:
7564 break;
7565 }
7566 else
7567 switch (draw_info->linejoin)
7568 {
7569 case BevelJoin:
7570 {
7571 stroke_p[p++]=box_p[1];
7572 stroke_p[p++]=box_p[2];
7573 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7574 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7575 if (dot_product <= miterlimit)
7576 stroke_q[q++]=box_q[4];
7577 else
7578 {
7579 stroke_q[q++]=box_q[1];
7580 stroke_q[q++]=box_q[2];
7581 }
7582 break;
7583 }
7584 case MiterJoin:
7585 {
7586 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7587 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7588 if (dot_product <= miterlimit)
7589 {
7590 stroke_q[q++]=box_q[4];
7591 stroke_p[p++]=box_p[4];
7592 }
7593 else
7594 {
7595 stroke_q[q++]=box_q[1];
7596 stroke_q[q++]=box_q[2];
7597 stroke_p[p++]=box_p[1];
7598 stroke_p[p++]=box_p[2];
7599 }
7600 break;
7601 }
7602 case RoundJoin:
7603 {
7604 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7605 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7606 if (dot_product <= miterlimit)
7607 stroke_q[q++]=box_q[4];
7608 else
7609 {
7610 stroke_q[q++]=box_q[1];
7611 stroke_q[q++]=box_q[2];
7612 }
7613 center=polygon_primitive[n].point;
7614 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7615 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7616 if (theta.p < theta.q)
7617 theta.p+=2.0*MagickPI;
7618 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7619 theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7620 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7621 stroke_p[p++]=box_p[1];
7622 for (j=1; j < (ssize_t) arc_segments; j++)
7623 {
7624 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7625 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7626 (theta.p+delta_theta),DegreesToRadians(360.0))));
7627 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7628 (theta.p+delta_theta),DegreesToRadians(360.0))));
7629 p++;
7630 }
7631 stroke_p[p++]=box_p[2];
7632 break;
7633 }
7634 default:
7635 break;
7636 }
7637 slope.p=slope.q;
7638 inverse_slope.p=inverse_slope.q;
7639 box_p[0]=box_p[2];
7640 box_p[1]=box_p[3];
7641 box_q[0]=box_q[2];
7642 box_q[1]=box_q[3];
7643 dx.p=dx.q;
7644 dy.p=dy.q;
7645 n=i;
7646 }
7647 stroke_p[p++]=box_p[1];
7648 stroke_q[q++]=box_q[1];
7649 /*
7650 Trace stroked polygon.
7651 */
7652 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7653 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7654 if (stroke_polygon == (PrimitiveInfo *) NULL)
7655 {
7656 (void) ThrowMagickException(exception,GetMagickModule(),
7657 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7658 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7659 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7660 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7661 polygon_primitive);
7662 return(stroke_polygon);
7663 }
7664 for (i=0; i < (ssize_t) p; i++)
7665 {
7666 stroke_polygon[i]=polygon_primitive[0];
7667 stroke_polygon[i].point=stroke_p[i];
7668 }
7669 if (closed_path != MagickFalse)
7670 {
7671 stroke_polygon[i]=polygon_primitive[0];
7672 stroke_polygon[i].point=stroke_polygon[0].point;
7673 i++;
7674 }
7675 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7676 {
7677 stroke_polygon[i]=polygon_primitive[0];
7678 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7679 }
7680 if (closed_path != MagickFalse)
7681 {
7682 stroke_polygon[i]=polygon_primitive[0];
7683 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7684 i++;
7685 }
7686 stroke_polygon[i]=polygon_primitive[0];
7687 stroke_polygon[i].point=stroke_polygon[0].point;
7688 i++;
7689 stroke_polygon[i].primitive=UndefinedPrimitive;
7690 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7691 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7692 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7693 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7694 return(stroke_polygon);
7695}