MagickCore 6.9.13
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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/license/ %
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{
113 SegmentInfo
114 bounds;
115
116 double
117 scanline;
118
119 PointInfo
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;
143} ElementInfo;
144
145typedef struct _MVGInfo
146{
147 PrimitiveInfo
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
156 PointInfo
157 point;
158
159 ExceptionInfo
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
165 EdgeInfo
166 *edges;
167
168 size_t
169 number_edges;
170} PolygonInfo;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
183 PointInfo
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{
237 DrawInfo
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{
275 DrawInfo
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{
477 EdgeInfo
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{
507 PointInfo
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
528 PointInfo
529 point,
530 *points;
531
532 PolygonInfo
533 *polygon_info;
534
535 SegmentInfo
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->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
765 polygon_info->number_edges,sizeof(*polygon_info->edges));
766 if (polygon_info->edges == (EdgeInfo *) NULL)
767 {
768 (void) ThrowMagickException(exception,GetMagickModule(),
769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
770 return(DestroyPolygonInfo(polygon_info));
771 }
772 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
773 {
774 EdgeInfo
775 *edge_info;
776
777 edge_info=polygon_info->edges+i;
778 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
779 edge_info->number_points,sizeof(*edge_info->points));
780 if (edge_info->points == (PointInfo *) NULL)
781 {
782 (void) ThrowMagickException(exception,GetMagickModule(),
783 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
784 return(DestroyPolygonInfo(polygon_info));
785 }
786 }
787 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
788 sizeof(*polygon_info->edges),DrawCompareEdges);
789 if ((GetLogEventMask() & DrawEvent) != 0)
790 LogPolygonInfo(polygon_info);
791 return(polygon_info);
792}
793␌
794/*
795%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
796% %
797% %
798% %
799+ C o n v e r t P r i m i t i v e T o P a t h %
800% %
801% %
802% %
803%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
804%
805% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
806% path structure.
807%
808% The format of the ConvertPrimitiveToPath method is:
809%
810% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
811% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
812%
813% A description of each parameter follows:
814%
815% o ConvertPrimitiveToPath() returns a vector path structure of type
816% PathInfo.
817%
818% o draw_info: a structure of type DrawInfo.
819%
820% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
821%
822%
823*/
824
825static void LogPathInfo(const PathInfo *path_info)
826{
827 const PathInfo
828 *p;
829
830 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
831 for (p=path_info; p->code != EndCode; p++)
832 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
833 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
834 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
835 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
836 "?");
837 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
838}
839
840static PathInfo *ConvertPrimitiveToPath(
841 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
842 ExceptionInfo *exception)
843{
844 MagickBooleanType
845 closed_subpath;
846
847 PathInfo
848 *path_info;
849
850 PathInfoCode
851 code;
852
853 PointInfo
854 p,
855 q;
856
857 ssize_t
858 i,
859 n;
860
861 ssize_t
862 coordinates,
863 start;
864
865 magick_unreferenced(draw_info);
866
867 /*
868 Converts a PrimitiveInfo structure into a vector path structure.
869 */
870 switch (primitive_info->primitive)
871 {
872 case PointPrimitive:
873 case ColorPrimitive:
874 case MattePrimitive:
875 case TextPrimitive:
876 case ImagePrimitive:
877 return((PathInfo *) NULL);
878 default:
879 break;
880 }
881 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
882 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
883 sizeof(*path_info));
884 if (path_info == (PathInfo *) NULL)
885 {
886 (void) ThrowMagickException(exception,GetMagickModule(),
887 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
888 return((PathInfo *) NULL);
889 }
890 coordinates=0;
891 closed_subpath=MagickFalse;
892 n=0;
893 p.x=(-1.0);
894 p.y=(-1.0);
895 q.x=(-1.0);
896 q.y=(-1.0);
897 start=0;
898 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
899 {
900 code=LineToCode;
901 if (coordinates <= 0)
902 {
903 /*
904 New subpath.
905 */
906 coordinates=(ssize_t) primitive_info[i].coordinates;
907 p=primitive_info[i].point;
908 start=n;
909 code=MoveToCode;
910 closed_subpath=primitive_info[i].closed_subpath;
911 }
912 coordinates--;
913 if ((code == MoveToCode) || (coordinates <= 0) ||
914 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
915 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
916 {
917 /*
918 Eliminate duplicate points.
919 */
920 path_info[n].code=code;
921 path_info[n].point=primitive_info[i].point;
922 q=primitive_info[i].point;
923 n++;
924 }
925 if (coordinates > 0)
926 continue; /* next point in current subpath */
927 if (closed_subpath != MagickFalse)
928 {
929 closed_subpath=MagickFalse;
930 continue;
931 }
932 /*
933 Mark the p point as open if the subpath is not closed.
934 */
935 path_info[start].code=OpenCode;
936 path_info[n].code=GhostlineCode;
937 path_info[n].point=primitive_info[i].point;
938 n++;
939 path_info[n].code=LineToCode;
940 path_info[n].point=p;
941 n++;
942 }
943 path_info[n].code=EndCode;
944 path_info[n].point.x=0.0;
945 path_info[n].point.y=0.0;
946 if (IsEventLogging() != MagickFalse)
947 LogPathInfo(path_info);
948 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
949 sizeof(*path_info));
950 return(path_info);
951}
952␌
953/*
954%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
955% %
956% %
957% %
958% D e s t r o y D r a w I n f o %
959% %
960% %
961% %
962%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
963%
964% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
965%
966% The format of the DestroyDrawInfo method is:
967%
968% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969%
970% A description of each parameter follows:
971%
972% o draw_info: the draw info.
973%
974*/
975MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
976{
977 assert(draw_info != (DrawInfo *) NULL);
978 assert(draw_info->signature == MagickCoreSignature);
979 if (IsEventLogging() != MagickFalse)
980 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
981 if (draw_info->id != (char *) NULL)
982 draw_info->id=DestroyString(draw_info->id);
983 if (draw_info->primitive != (char *) NULL)
984 draw_info->primitive=DestroyString(draw_info->primitive);
985 if (draw_info->text != (char *) NULL)
986 draw_info->text=DestroyString(draw_info->text);
987 if (draw_info->geometry != (char *) NULL)
988 draw_info->geometry=DestroyString(draw_info->geometry);
989 if (draw_info->tile != (Image *) NULL)
990 draw_info->tile=DestroyImage(draw_info->tile);
991 if (draw_info->fill_pattern != (Image *) NULL)
992 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
993 if (draw_info->stroke_pattern != (Image *) NULL)
994 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
995 if (draw_info->font != (char *) NULL)
996 draw_info->font=DestroyString(draw_info->font);
997 if (draw_info->metrics != (char *) NULL)
998 draw_info->metrics=DestroyString(draw_info->metrics);
999 if (draw_info->family != (char *) NULL)
1000 draw_info->family=DestroyString(draw_info->family);
1001 if (draw_info->encoding != (char *) NULL)
1002 draw_info->encoding=DestroyString(draw_info->encoding);
1003 if (draw_info->density != (char *) NULL)
1004 draw_info->density=DestroyString(draw_info->density);
1005 if (draw_info->server_name != (char *) NULL)
1006 draw_info->server_name=(char *)
1007 RelinquishMagickMemory(draw_info->server_name);
1008 if (draw_info->dash_pattern != (double *) NULL)
1009 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1010 draw_info->dash_pattern);
1011 if (draw_info->gradient.stops != (StopInfo *) NULL)
1012 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1013 draw_info->gradient.stops);
1014 if (draw_info->clip_mask != (char *) NULL)
1015 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1016 if (draw_info->clipping_mask != (Image *) NULL)
1017 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1018 if (draw_info->composite_mask != (Image *) NULL)
1019 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1020 if (draw_info->image_info != (ImageInfo *) NULL)
1021 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1022 draw_info->signature=(~MagickCoreSignature);
1023 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1024 return(draw_info);
1025}
1026␌
1027/*
1028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1029% %
1030% %
1031% %
1032% D r a w A f f i n e I m a g e %
1033% %
1034% %
1035% %
1036%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1037%
1038% DrawAffineImage() composites the source over the destination image as
1039% dictated by the affine transform.
1040%
1041% The format of the DrawAffineImage method is:
1042%
1043% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1044% const AffineMatrix *affine)
1045%
1046% A description of each parameter follows:
1047%
1048% o image: the image.
1049%
1050% o source: the source image.
1051%
1052% o affine: the affine transform.
1053%
1054*/
1055
1056static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1057 const double y,const SegmentInfo *edge)
1058{
1059 double
1060 intercept,
1061 z;
1062
1063 double
1064 x;
1065
1066 SegmentInfo
1067 inverse_edge;
1068
1069 /*
1070 Determine left and right edges.
1071 */
1072 inverse_edge.x1=edge->x1;
1073 inverse_edge.y1=edge->y1;
1074 inverse_edge.x2=edge->x2;
1075 inverse_edge.y2=edge->y2;
1076 z=affine->ry*y+affine->tx;
1077 if (affine->sx >= MagickEpsilon)
1078 {
1079 intercept=(-z/affine->sx);
1080 x=intercept;
1081 if (x > inverse_edge.x1)
1082 inverse_edge.x1=x;
1083 intercept=(-z+(double) image->columns)/affine->sx;
1084 x=intercept;
1085 if (x < inverse_edge.x2)
1086 inverse_edge.x2=x;
1087 }
1088 else
1089 if (affine->sx < -MagickEpsilon)
1090 {
1091 intercept=(-z+(double) image->columns)/affine->sx;
1092 x=intercept;
1093 if (x > inverse_edge.x1)
1094 inverse_edge.x1=x;
1095 intercept=(-z/affine->sx);
1096 x=intercept;
1097 if (x < inverse_edge.x2)
1098 inverse_edge.x2=x;
1099 }
1100 else
1101 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1102 {
1103 inverse_edge.x2=edge->x1;
1104 return(inverse_edge);
1105 }
1106 /*
1107 Determine top and bottom edges.
1108 */
1109 z=affine->sy*y+affine->ty;
1110 if (affine->rx >= MagickEpsilon)
1111 {
1112 intercept=(-z/affine->rx);
1113 x=intercept;
1114 if (x > inverse_edge.x1)
1115 inverse_edge.x1=x;
1116 intercept=(-z+(double) image->rows)/affine->rx;
1117 x=intercept;
1118 if (x < inverse_edge.x2)
1119 inverse_edge.x2=x;
1120 }
1121 else
1122 if (affine->rx < -MagickEpsilon)
1123 {
1124 intercept=(-z+(double) image->rows)/affine->rx;
1125 x=intercept;
1126 if (x > inverse_edge.x1)
1127 inverse_edge.x1=x;
1128 intercept=(-z/affine->rx);
1129 x=intercept;
1130 if (x < inverse_edge.x2)
1131 inverse_edge.x2=x;
1132 }
1133 else
1134 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1135 {
1136 inverse_edge.x2=edge->x2;
1137 return(inverse_edge);
1138 }
1139 return(inverse_edge);
1140}
1141
1142static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1143{
1144 AffineMatrix
1145 inverse_affine;
1146
1147 double
1148 determinant;
1149
1150 determinant=MagickSafeReciprocal(affine->sx*affine->sy-affine->rx*
1151 affine->ry);
1152 inverse_affine.sx=determinant*affine->sy;
1153 inverse_affine.rx=determinant*(-affine->rx);
1154 inverse_affine.ry=determinant*(-affine->ry);
1155 inverse_affine.sy=determinant*affine->sx;
1156 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1157 inverse_affine.ry;
1158 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1159 inverse_affine.sy;
1160 return(inverse_affine);
1161}
1162
1163MagickExport MagickBooleanType DrawAffineImage(Image *image,
1164 const Image *source,const AffineMatrix *affine)
1165{
1166 AffineMatrix
1167 inverse_affine;
1168
1169 CacheView
1170 *image_view,
1171 *source_view;
1172
1173 ExceptionInfo
1174 *exception;
1175
1176 MagickBooleanType
1177 status;
1178
1179 MagickPixelPacket
1180 zero;
1181
1182 PointInfo
1183 extent[4],
1184 min,
1185 max,
1186 point;
1187
1188 ssize_t
1189 i;
1190
1191 SegmentInfo
1192 edge;
1193
1194 ssize_t
1195 start,
1196 stop,
1197 y;
1198
1199 /*
1200 Determine bounding box.
1201 */
1202 assert(image != (Image *) NULL);
1203 assert(image->signature == MagickCoreSignature);
1204 assert(source != (const Image *) NULL);
1205 assert(source->signature == MagickCoreSignature);
1206 if (IsEventLogging() != MagickFalse)
1207 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1208 assert(affine != (AffineMatrix *) NULL);
1209 extent[0].x=0.0;
1210 extent[0].y=0.0;
1211 extent[1].x=(double) source->columns;
1212 extent[1].y=0.0;
1213 extent[2].x=(double) source->columns;
1214 extent[2].y=(double) source->rows;
1215 extent[3].x=0.0;
1216 extent[3].y=(double) source->rows;
1217 for (i=0; i < 4; i++)
1218 {
1219 point=extent[i];
1220 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1221 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1222 }
1223 min=extent[0];
1224 max=extent[0];
1225 for (i=1; i < 4; i++)
1226 {
1227 if (min.x > extent[i].x)
1228 min.x=extent[i].x;
1229 if (min.y > extent[i].y)
1230 min.y=extent[i].y;
1231 if (max.x < extent[i].x)
1232 max.x=extent[i].x;
1233 if (max.y < extent[i].y)
1234 max.y=extent[i].y;
1235 }
1236 /*
1237 Affine transform image.
1238 */
1239 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1240 return(MagickFalse);
1241 status=MagickTrue;
1242 edge.x1=min.x;
1243 edge.y1=min.y;
1244 edge.x2=max.x;
1245 edge.y2=max.y;
1246 inverse_affine=InverseAffineMatrix(affine);
1247 if (edge.y1 < 0.0)
1248 edge.y1=0.0;
1249 if (edge.y2 > (image->rows-1.0))
1250 edge.y2=image->rows-1.0;
1251 GetMagickPixelPacket(image,&zero);
1252 exception=(&image->exception);
1253 start=CastDoubleToLong(ceil(edge.y1-0.5));
1254 stop=CastDoubleToLong(floor(edge.y2+0.5));
1255 source_view=AcquireVirtualCacheView(source,exception);
1256 image_view=AcquireAuthenticCacheView(image,exception);
1257#if defined(MAGICKCORE_OPENMP_SUPPORT)
1258 #pragma omp parallel for schedule(static) shared(status) \
1259 magick_number_threads(source,image,stop-start,1)
1260#endif
1261 for (y=start; y <= stop; y++)
1262 {
1263 IndexPacket
1264 *magick_restrict indexes;
1265
1266 MagickPixelPacket
1267 composite,
1268 pixel;
1269
1270 PointInfo
1271 point;
1272
1273 PixelPacket
1274 *magick_restrict q;
1275
1276 SegmentInfo
1277 inverse_edge;
1278
1279 ssize_t
1280 x,
1281 x_offset;
1282
1283 if (status == MagickFalse)
1284 continue;
1285 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1286 if (inverse_edge.x2 < inverse_edge.x1)
1287 continue;
1288 if (inverse_edge.x1 < 0.0)
1289 inverse_edge.x1=0.0;
1290 if (inverse_edge.x2 > image->columns-1.0)
1291 inverse_edge.x2=image->columns-1.0;
1292 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1293 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1294 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1295 if (q == (PixelPacket *) NULL)
1296 continue;
1297 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1298 pixel=zero;
1299 composite=zero;
1300 x_offset=0;
1301 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1302 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1303 {
1304 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1305 inverse_affine.tx;
1306 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1307 inverse_affine.ty;
1308 status=InterpolateMagickPixelPacket(source,source_view,
1309 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1310 if (status == MagickFalse)
1311 break;
1312 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1313 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1314 composite.opacity,&composite);
1315 SetPixelPacket(image,&composite,q,indexes+x_offset);
1316 x_offset++;
1317 q++;
1318 }
1319 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1320 status=MagickFalse;
1321 }
1322 source_view=DestroyCacheView(source_view);
1323 image_view=DestroyCacheView(image_view);
1324 return(status);
1325}
1326␌
1327/*
1328%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1329% %
1330% %
1331% %
1332+ D r a w B o u n d i n g R e c t a n g l e s %
1333% %
1334% %
1335% %
1336%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1337%
1338% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1339% is only useful for developers debugging the rendering algorithm.
1340%
1341% The format of the DrawBoundingRectangles method is:
1342%
1343% MagickBooleanType DrawBoundingRectangles(Image *image,
1344% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1345%
1346% A description of each parameter follows:
1347%
1348% o image: the image.
1349%
1350% o draw_info: the draw info.
1351%
1352% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1353%
1354*/
1355
1356static MagickBooleanType DrawBoundingRectangles(Image *image,
1357 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1358{
1359 double
1360 mid;
1361
1362 DrawInfo
1363 *clone_info;
1364
1365 MagickStatusType
1366 status;
1367
1368 PointInfo
1369 end,
1370 resolution,
1371 start;
1372
1373 PrimitiveInfo
1374 primitive_info[6];
1375
1376 ssize_t
1377 i;
1378
1379 SegmentInfo
1380 bounds;
1381
1382 ssize_t
1383 coordinates;
1384
1385 (void) memset(primitive_info,0,sizeof(primitive_info));
1386 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1387 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1388 if (status == MagickFalse)
1389 {
1390 clone_info=DestroyDrawInfo(clone_info);
1391 return(MagickFalse);
1392 }
1393 resolution.x=96.0;
1394 resolution.y=96.0;
1395 if (clone_info->density != (char *) NULL)
1396 {
1397 GeometryInfo
1398 geometry_info;
1399
1400 MagickStatusType
1401 flags;
1402
1403 flags=ParseGeometry(clone_info->density,&geometry_info);
1404 if ((flags & RhoValue) != 0)
1405 resolution.x=geometry_info.rho;
1406 resolution.y=resolution.x;
1407 if ((flags & SigmaValue) != 0)
1408 resolution.y=geometry_info.sigma;
1409 }
1410 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1411 clone_info->stroke_width/2.0;
1412 bounds.x1=0.0;
1413 bounds.y1=0.0;
1414 bounds.x2=0.0;
1415 bounds.y2=0.0;
1416 if (polygon_info != (PolygonInfo *) NULL)
1417 {
1418 bounds=polygon_info->edges[0].bounds;
1419 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1420 {
1421 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1422 bounds.x1=polygon_info->edges[i].bounds.x1;
1423 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1424 bounds.y1=polygon_info->edges[i].bounds.y1;
1425 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1426 bounds.x2=polygon_info->edges[i].bounds.x2;
1427 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1428 bounds.y2=polygon_info->edges[i].bounds.y2;
1429 }
1430 bounds.x1-=mid;
1431 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1432 image->columns ? (double) image->columns-1 : bounds.x1;
1433 bounds.y1-=mid;
1434 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1435 image->rows ? (double) image->rows-1 : bounds.y1;
1436 bounds.x2+=mid;
1437 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1438 image->columns ? (double) image->columns-1 : bounds.x2;
1439 bounds.y2+=mid;
1440 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1441 image->rows ? (double) image->rows-1 : bounds.y2;
1442 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1443 {
1444 if (polygon_info->edges[i].direction != 0)
1445 status=QueryColorDatabase("#f00",&clone_info->stroke,
1446 &image->exception);
1447 else
1448 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1449 &image->exception);
1450 if (status == MagickFalse)
1451 break;
1452 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1453 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1454 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1455 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1456 primitive_info[0].primitive=RectanglePrimitive;
1457 status&=TraceRectangle(primitive_info,start,end);
1458 primitive_info[0].method=ReplaceMethod;
1459 coordinates=(ssize_t) primitive_info[0].coordinates;
1460 primitive_info[coordinates].primitive=UndefinedPrimitive;
1461 status=DrawPrimitive(image,clone_info,primitive_info);
1462 if (status == MagickFalse)
1463 break;
1464 }
1465 if (i < (ssize_t) polygon_info->number_edges)
1466 {
1467 clone_info=DestroyDrawInfo(clone_info);
1468 return(status == 0 ? MagickFalse : MagickTrue);
1469 }
1470 }
1471 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1472 if (status == MagickFalse)
1473 {
1474 clone_info=DestroyDrawInfo(clone_info);
1475 return(MagickFalse);
1476 }
1477 start.x=(double) (bounds.x1-mid);
1478 start.y=(double) (bounds.y1-mid);
1479 end.x=(double) (bounds.x2+mid);
1480 end.y=(double) (bounds.y2+mid);
1481 primitive_info[0].primitive=RectanglePrimitive;
1482 status&=TraceRectangle(primitive_info,start,end);
1483 primitive_info[0].method=ReplaceMethod;
1484 coordinates=(ssize_t) primitive_info[0].coordinates;
1485 primitive_info[coordinates].primitive=UndefinedPrimitive;
1486 status=DrawPrimitive(image,clone_info,primitive_info);
1487 clone_info=DestroyDrawInfo(clone_info);
1488 return(status == 0 ? MagickFalse : MagickTrue);
1489}
1490␌
1491/*
1492%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1493% %
1494% %
1495% %
1496% D r a w C l i p P a t h %
1497% %
1498% %
1499% %
1500%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1501%
1502% DrawClipPath() draws the clip path on the image mask.
1503%
1504% The format of the DrawClipPath method is:
1505%
1506% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1507% const char *id)
1508%
1509% A description of each parameter follows:
1510%
1511% o image: the image.
1512%
1513% o draw_info: the draw info.
1514%
1515% o id: the clip path id.
1516%
1517*/
1518MagickExport MagickBooleanType DrawClipPath(Image *image,
1519 const DrawInfo *draw_info,const char *id)
1520{
1521 const char
1522 *clip_path;
1523
1524 Image
1525 *clipping_mask;
1526
1527 MagickBooleanType
1528 status;
1529
1530 clip_path=GetImageArtifact(image,id);
1531 if (clip_path == (const char *) NULL)
1532 return(MagickFalse);
1533 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1534 &image->exception);
1535 if (clipping_mask == (Image *) NULL)
1536 return(MagickFalse);
1537 status=SetImageClipMask(image,clipping_mask);
1538 clipping_mask=DestroyImage(clipping_mask);
1539 return(status);
1540}
1541␌
1542/*
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544% %
1545% %
1546% %
1547% D r a w C l i p p i n g M a s k %
1548% %
1549% %
1550% %
1551%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1552%
1553% DrawClippingMask() draws the clip path and returns it as an image clipping
1554% mask.
1555%
1556% The format of the DrawClippingMask method is:
1557%
1558% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1559% const char *id,const char *clip_path,ExceptionInfo *exception)
1560%
1561% A description of each parameter follows:
1562%
1563% o image: the image.
1564%
1565% o draw_info: the draw info.
1566%
1567% o id: the clip path id.
1568%
1569% o clip_path: the clip path.
1570%
1571% o exception: return any errors or warnings in this structure.
1572%
1573*/
1574static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1575 const char *id,const char *clip_path,ExceptionInfo *exception)
1576{
1577 DrawInfo
1578 *clone_info;
1579
1580 Image
1581 *clip_mask;
1582
1583 MagickStatusType
1584 status;
1585
1586 /*
1587 Draw a clip path.
1588 */
1589 assert(image != (Image *) NULL);
1590 assert(image->signature == MagickCoreSignature);
1591 assert(draw_info != (const DrawInfo *) NULL);
1592 if (IsEventLogging() != MagickFalse)
1593 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1594 clip_mask=AcquireImage((const ImageInfo *) NULL);
1595 status=SetImageExtent(clip_mask,image->columns,image->rows);
1596 if (status == MagickFalse)
1597 return(DestroyImage(clip_mask));
1598 status=SetImageClipMask(image,(Image *) NULL);
1599 status=QueryColorCompliance("#0000",AllCompliance,
1600 &clip_mask->background_color,exception);
1601 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1602 status=SetImageBackgroundColor(clip_mask);
1603 if (draw_info->debug != MagickFalse)
1604 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1605 id);
1606 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1607 (void) CloneString(&clone_info->primitive,clip_path);
1608 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1609 exception);
1610 if (clone_info->clip_mask != (char *) NULL)
1611 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1612 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1613 exception);
1614 clone_info->stroke_width=0.0;
1615 clone_info->opacity=OpaqueOpacity;
1616 clone_info->clip_path=MagickTrue;
1617 status=RenderMVGContent(clip_mask,clone_info,0);
1618 clone_info=DestroyDrawInfo(clone_info);
1619 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1620 if (draw_info->compliance != SVGCompliance)
1621 status&=NegateImage(clip_mask,MagickFalse);
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask;
1665
1666 DrawInfo
1667 *clone_info;
1668
1669 MagickStatusType
1670 status;
1671
1672 /*
1673 Draw a mask path.
1674 */
1675 assert(image != (Image *) NULL);
1676 assert(image->signature == MagickCoreSignature);
1677 assert(draw_info != (const DrawInfo *) NULL);
1678 if (IsEventLogging() != MagickFalse)
1679 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1680 composite_mask=AcquireImage((const ImageInfo *) NULL);
1681 status=SetImageExtent(composite_mask,image->columns,image->rows);
1682 if (status == MagickFalse)
1683 return(DestroyImage(composite_mask));
1684 status=SetImageMask(image,(Image *) NULL);
1685 status=QueryColorCompliance("#0000",AllCompliance,
1686 &composite_mask->background_color,exception);
1687 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1688 (void) SetImageBackgroundColor(composite_mask);
1689 if (draw_info->debug != MagickFalse)
1690 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1691 id);
1692 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1693 (void) CloneString(&clone_info->primitive,mask_path);
1694 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1695 exception);
1696 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1697 exception);
1698 clone_info->stroke_width=0.0;
1699 clone_info->opacity=OpaqueOpacity;
1700 status=RenderMVGContent(composite_mask,clone_info,0);
1701 clone_info=DestroyDrawInfo(clone_info);
1702 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1703 status&=NegateImage(composite_mask,MagickFalse);
1704 if (status == MagickFalse)
1705 composite_mask=DestroyImage(composite_mask);
1706 if (draw_info->debug != MagickFalse)
1707 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1708 return(composite_mask);
1709}
1710␌
1711/*
1712%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1713% %
1714% %
1715% %
1716+ D r a w D a s h P o l y g o n %
1717% %
1718% %
1719% %
1720%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1721%
1722% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1723% image while respecting the dash offset and dash pattern attributes.
1724%
1725% The format of the DrawDashPolygon method is:
1726%
1727% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1728% const PrimitiveInfo *primitive_info,Image *image)
1729%
1730% A description of each parameter follows:
1731%
1732% o draw_info: the draw info.
1733%
1734% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1735%
1736% o image: the image.
1737%
1738%
1739*/
1740static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1741 const PrimitiveInfo *primitive_info,Image *image)
1742{
1743 double
1744 dx,
1745 dy,
1746 length,
1747 maximum_length,
1748 offset,
1749 scale,
1750 total_length;
1751
1752 DrawInfo
1753 *clone_info;
1754
1755 MagickStatusType
1756 status;
1757
1758 PrimitiveInfo
1759 *dash_polygon;
1760
1761 ssize_t
1762 i;
1763
1764 size_t
1765 number_vertices;
1766
1767 ssize_t
1768 j,
1769 n;
1770
1771 assert(draw_info != (const DrawInfo *) NULL);
1772 if (draw_info->debug != MagickFalse)
1773 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1774 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1775 number_vertices=(size_t) i;
1776 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1777 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1778 if (dash_polygon == (PrimitiveInfo *) NULL)
1779 {
1780 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1781 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1782 return(MagickFalse);
1783 }
1784 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1785 sizeof(*dash_polygon));
1786 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1787 clone_info->miterlimit=0;
1788 dash_polygon[0]=primitive_info[0];
1789 dash_polygon[0].closed_subpath=MagickFalse;
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].closed_subpath=MagickFalse;
1841 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1842 total_length*MagickSafeReciprocal(maximum_length));
1843 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1844 total_length*MagickSafeReciprocal(maximum_length));
1845 j=1;
1846 }
1847 else
1848 {
1849 if ((j+1) > (ssize_t) number_vertices)
1850 break;
1851 dash_polygon[j]=primitive_info[i-1];
1852 dash_polygon[j].closed_subpath=MagickFalse;
1853 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 dash_polygon[j].coordinates=1;
1858 j++;
1859 dash_polygon[0].coordinates=(size_t) j;
1860 dash_polygon[j].primitive=UndefinedPrimitive;
1861 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1862 if (status == MagickFalse)
1863 break;
1864 }
1865 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1866 n++;
1867 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1868 n=0;
1869 length=scale*draw_info->dash_pattern[n];
1870 }
1871 length-=(maximum_length-total_length);
1872 if ((n & 0x01) != 0)
1873 continue;
1874 dash_polygon[j]=primitive_info[i];
1875 dash_polygon[j].coordinates=1;
1876 j++;
1877 }
1878 if ((status != MagickFalse) && (total_length < maximum_length) &&
1879 ((n & 0x01) == 0) && (j > 1))
1880 {
1881 dash_polygon[j]=primitive_info[i-1];
1882 dash_polygon[j].closed_subpath=MagickFalse;
1883 dash_polygon[j].point.x+=MagickEpsilon;
1884 dash_polygon[j].point.y+=MagickEpsilon;
1885 dash_polygon[j].coordinates=1;
1886 j++;
1887 dash_polygon[0].coordinates=(size_t) j;
1888 dash_polygon[j].primitive=UndefinedPrimitive;
1889 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1890 }
1891 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1892 clone_info=DestroyDrawInfo(clone_info);
1893 if (draw_info->debug != MagickFalse)
1894 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1895 return(status != 0 ? MagickTrue : MagickFalse);
1896}
1897␌
1898/*
1899%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1900% %
1901% %
1902% %
1903% D r a w G r a d i e n t I m a g e %
1904% %
1905% %
1906% %
1907%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1908%
1909% DrawGradientImage() draws a linear gradient on the image.
1910%
1911% The format of the DrawGradientImage method is:
1912%
1913% MagickBooleanType DrawGradientImage(Image *image,
1914% const DrawInfo *draw_info)
1915%
1916% A description of each parameter follows:
1917%
1918% o image: the image.
1919%
1920% o draw_info: the draw info.
1921%
1922*/
1923
1924static inline double GetStopColorOffset(const GradientInfo *gradient,
1925 const ssize_t x,const ssize_t y)
1926{
1927 switch (gradient->type)
1928 {
1929 case UndefinedGradient:
1930 case LinearGradient:
1931 {
1932 double
1933 gamma,
1934 length,
1935 offset,
1936 scale;
1937
1938 PointInfo
1939 p,
1940 q;
1941
1942 const SegmentInfo
1943 *gradient_vector;
1944
1945 gradient_vector=(&gradient->gradient_vector);
1946 p.x=gradient_vector->x2-gradient_vector->x1;
1947 p.y=gradient_vector->y2-gradient_vector->y1;
1948 q.x=(double) x-gradient_vector->x1;
1949 q.y=(double) y-gradient_vector->y1;
1950 length=sqrt(q.x*q.x+q.y*q.y);
1951 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1952 gamma=MagickSafeReciprocal(gamma);
1953 scale=p.x*q.x+p.y*q.y;
1954 offset=gamma*scale*length;
1955 return(offset);
1956 }
1957 case RadialGradient:
1958 {
1959 PointInfo
1960 v;
1961
1962 if (gradient->spread == RepeatSpread)
1963 {
1964 v.x=(double) x-gradient->center.x;
1965 v.y=(double) y-gradient->center.y;
1966 return(sqrt(v.x*v.x+v.y*v.y));
1967 }
1968 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1969 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1970 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1971 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1972 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1973 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1974 return(sqrt(v.x*v.x+v.y*v.y));
1975 }
1976 }
1977 return(0.0);
1978}
1979
1980MagickExport MagickBooleanType DrawGradientImage(Image *image,
1981 const DrawInfo *draw_info)
1982{
1983 CacheView
1984 *image_view;
1985
1986 const GradientInfo
1987 *gradient;
1988
1989 const SegmentInfo
1990 *gradient_vector;
1991
1992 double
1993 length;
1994
1995 ExceptionInfo
1996 *exception;
1997
1998 MagickBooleanType
1999 status;
2000
2001 MagickPixelPacket
2002 zero;
2003
2004 PointInfo
2005 point;
2006
2007 RectangleInfo
2008 bounding_box;
2009
2010 ssize_t
2011 height,
2012 y;
2013
2014 /*
2015 Draw linear or radial gradient on image.
2016 */
2017 assert(image != (Image *) NULL);
2018 assert(image->signature == MagickCoreSignature);
2019 assert(draw_info != (const DrawInfo *) NULL);
2020 if (IsEventLogging() != MagickFalse)
2021 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2022 gradient=(&draw_info->gradient);
2023 gradient_vector=(&gradient->gradient_vector);
2024 point.x=gradient_vector->x2-gradient_vector->x1;
2025 point.y=gradient_vector->y2-gradient_vector->y1;
2026 length=sqrt(point.x*point.x+point.y*point.y);
2027 bounding_box=gradient->bounding_box;
2028 status=MagickTrue;
2029 exception=(&image->exception);
2030 GetMagickPixelPacket(image,&zero);
2031 image_view=AcquireAuthenticCacheView(image,exception);
2032 height=(size_t) (bounding_box.y+bounding_box.height);
2033#if defined(MAGICKCORE_OPENMP_SUPPORT)
2034 #pragma omp parallel for schedule(static) shared(status) \
2035 magick_number_threads(image,image,height,1)
2036#endif
2037 for (y=bounding_box.y; y < (ssize_t) height; y++)
2038 {
2039 double
2040 alpha,
2041 offset;
2042
2043 MagickPixelPacket
2044 composite,
2045 pixel;
2046
2047 IndexPacket
2048 *magick_restrict indexes;
2049
2050 PixelPacket
2051 *magick_restrict q;
2052
2053 ssize_t
2054 i,
2055 j,
2056 width,
2057 x;
2058
2059 if (status == MagickFalse)
2060 continue;
2061 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2062 bounding_box.width,1,exception);
2063 if (q == (PixelPacket *) NULL)
2064 {
2065 status=MagickFalse;
2066 continue;
2067 }
2068 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2069 pixel=zero;
2070 composite=zero;
2071 offset=GetStopColorOffset(gradient,0,y);
2072 if (gradient->type != RadialGradient)
2073 offset*=MagickSafeReciprocal(length);
2074 width=(size_t) (bounding_box.x+bounding_box.width);
2075 for (x=bounding_box.x; x < (ssize_t) width; x++)
2076 {
2077 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2078 switch (gradient->spread)
2079 {
2080 case UndefinedSpread:
2081 case PadSpread:
2082 {
2083 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2084 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2085 {
2086 offset=GetStopColorOffset(gradient,x,y);
2087 if (gradient->type != RadialGradient)
2088 offset*=MagickSafeReciprocal(length);
2089 }
2090 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2091 if (offset < gradient->stops[i].offset)
2092 break;
2093 if ((offset < 0.0) || (i == 0))
2094 composite=gradient->stops[0].color;
2095 else
2096 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2097 composite=gradient->stops[gradient->number_stops-1].color;
2098 else
2099 {
2100 j=i;
2101 i--;
2102 alpha=(offset-gradient->stops[i].offset)/
2103 (gradient->stops[j].offset-gradient->stops[i].offset);
2104 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2105 &gradient->stops[j].color,alpha,&composite);
2106 }
2107 break;
2108 }
2109 case ReflectSpread:
2110 {
2111 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2112 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2113 {
2114 offset=GetStopColorOffset(gradient,x,y);
2115 if (gradient->type != RadialGradient)
2116 offset*=MagickSafeReciprocal(length);
2117 }
2118 if (offset < 0.0)
2119 offset=(-offset);
2120 if ((ssize_t) fmod(offset,2.0) == 0)
2121 offset=fmod(offset,1.0);
2122 else
2123 offset=1.0-fmod(offset,1.0);
2124 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2125 if (offset < gradient->stops[i].offset)
2126 break;
2127 if (i == 0)
2128 composite=gradient->stops[0].color;
2129 else
2130 if (i == (ssize_t) gradient->number_stops)
2131 composite=gradient->stops[gradient->number_stops-1].color;
2132 else
2133 {
2134 j=i;
2135 i--;
2136 alpha=(offset-gradient->stops[i].offset)/
2137 (gradient->stops[j].offset-gradient->stops[i].offset);
2138 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2139 &gradient->stops[j].color,alpha,&composite);
2140 }
2141 break;
2142 }
2143 case RepeatSpread:
2144 {
2145 double
2146 repeat;
2147
2148 MagickBooleanType
2149 antialias;
2150
2151 antialias=MagickFalse;
2152 repeat=0.0;
2153 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2154 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2155 {
2156 offset=GetStopColorOffset(gradient,x,y);
2157 if (gradient->type == LinearGradient)
2158 {
2159 repeat=fmod(offset,length);
2160 if (repeat < 0.0)
2161 repeat=length-fmod(-repeat,length);
2162 else
2163 repeat=fmod(offset,length);
2164 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2165 MagickTrue : MagickFalse;
2166 offset=MagickSafeReciprocal(length)*repeat;
2167 }
2168 else
2169 {
2170 repeat=fmod(offset,(double) gradient->radius);
2171 if (repeat < 0.0)
2172 repeat=gradient->radius-fmod(-repeat,
2173 (double) gradient->radius);
2174 else
2175 repeat=fmod(offset,(double) gradient->radius);
2176 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2177 MagickFalse;
2178 offset=repeat*MagickSafeReciprocal(gradient->radius);
2179 }
2180 }
2181 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2182 if (offset < gradient->stops[i].offset)
2183 break;
2184 if (i == 0)
2185 composite=gradient->stops[0].color;
2186 else
2187 if (i == (ssize_t) gradient->number_stops)
2188 composite=gradient->stops[gradient->number_stops-1].color;
2189 else
2190 {
2191 j=i;
2192 i--;
2193 alpha=(offset-gradient->stops[i].offset)/
2194 (gradient->stops[j].offset-gradient->stops[i].offset);
2195 if (antialias != MagickFalse)
2196 {
2197 if (gradient->type == LinearGradient)
2198 alpha=length-repeat;
2199 else
2200 alpha=gradient->radius-repeat;
2201 i=0;
2202 j=(ssize_t) gradient->number_stops-1L;
2203 }
2204 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2205 &gradient->stops[j].color,alpha,&composite);
2206 }
2207 break;
2208 }
2209 }
2210 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2211 pixel.opacity,&pixel);
2212 SetPixelPacket(image,&pixel,q,indexes+x);
2213 q++;
2214 }
2215 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2216 status=MagickFalse;
2217 }
2218 image_view=DestroyCacheView(image_view);
2219 return(status);
2220}
2221␌
2222/*
2223%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2224% %
2225% %
2226% %
2227% D r a w I m a g e %
2228% %
2229% %
2230% %
2231%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2232%
2233% DrawImage() draws a graphic primitive on your image. The primitive
2234% may be represented as a string or filename. Precede the filename with an
2235% "at" sign (@) and the contents of the file are drawn on the image. You
2236% can affect how text is drawn by setting one or more members of the draw
2237% info structure.
2238%
2239% The format of the DrawImage method is:
2240%
2241% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2242%
2243% A description of each parameter follows:
2244%
2245% o image: the image.
2246%
2247% o draw_info: the draw info.
2248%
2249*/
2250
2251static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2252 const double pad)
2253{
2254 char
2255 **text = (char **) NULL;
2256
2257 double
2258 extent;
2259
2260 size_t
2261 quantum;
2262
2263 ssize_t
2264 i;
2265
2266 /*
2267 Check if there is enough storage for drawing primitives.
2268 */
2269 quantum=sizeof(**mvg_info->primitive_info);
2270 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2271 if (extent <= (double) *mvg_info->extent)
2272 return(MagickTrue);
2273 if ((extent >= (double) GetMaxMemoryRequest()) || (IsNaN(extent) != 0))
2274 return(MagickFalse);
2275 if (mvg_info->offset > 0)
2276 {
2277 text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2278 if (text == (char **) NULL)
2279 return(MagickFalse);
2280 for (i=0; i < mvg_info->offset; i++)
2281 text[i]=(*mvg_info->primitive_info)[i].text;
2282 }
2283 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2284 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2285 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2286 {
2287 if (text != (char **) NULL)
2288 text=(char **) RelinquishMagickMemory(text);
2289 *mvg_info->extent=(size_t) extent;
2290 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2291 {
2292 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2293 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2294 }
2295 return(MagickTrue);
2296 }
2297 /*
2298 Reallocation failed, allocate a primitive to facilitate unwinding.
2299 */
2300 if (text != (char **) NULL)
2301 {
2302 for (i=0; i < mvg_info->offset; i++)
2303 if (text[i] != (char *) NULL)
2304 text[i]=DestroyString(text[i]);
2305 text=(char **) RelinquishMagickMemory(text);
2306 }
2307 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2308 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2309 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2310 (PrimitiveExtentPad+1)*quantum);
2311 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2312 quantum));
2313 *mvg_info->extent=1;
2314 mvg_info->offset=0;
2315 return(MagickFalse);
2316}
2317
2318static inline double GetDrawValue(const char *magick_restrict string,
2319 char **magick_restrict sentinel)
2320{
2321 char
2322 **magick_restrict q;
2323
2324 double
2325 value;
2326
2327 q=sentinel;
2328 value=InterpretLocaleValue(string,q);
2329 sentinel=q;
2330 return(value);
2331}
2332
2333static int MVGMacroCompare(const void *target,const void *source)
2334{
2335 const char
2336 *p,
2337 *q;
2338
2339 p=(const char *) target;
2340 q=(const char *) source;
2341 return(strcmp(p,q));
2342}
2343
2344static SplayTreeInfo *GetMVGMacros(const char *primitive)
2345{
2346 char
2347 *macro,
2348 *token;
2349
2350 const char
2351 *q;
2352
2353 size_t
2354 extent;
2355
2356 SplayTreeInfo
2357 *macros;
2358
2359 /*
2360 Scan graphic primitives for definitions and classes.
2361 */
2362 if (primitive == (const char *) NULL)
2363 return((SplayTreeInfo *) NULL);
2364 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2365 RelinquishMagickMemory);
2366 macro=AcquireString(primitive);
2367 token=AcquireString(primitive);
2368 extent=strlen(token)+MagickPathExtent;
2369 for (q=primitive; *q != '\0'; )
2370 {
2371 if (GetNextToken(q,&q,extent,token) < 1)
2372 break;
2373 if (*token == '\0')
2374 break;
2375 if (LocaleCompare("push",token) == 0)
2376 {
2377 const char
2378 *end,
2379 *start;
2380
2381 (void) GetNextToken(q,&q,extent,token);
2382 if (*q == '"')
2383 {
2384 char
2385 name[MagickPathExtent];
2386
2387 const char
2388 *p;
2389
2390 ssize_t
2391 n;
2392
2393 /*
2394 Named macro (e.g. push graphic-context "wheel").
2395 */
2396 (void) GetNextToken(q,&q,extent,token);
2397 start=q;
2398 end=q;
2399 (void) CopyMagickString(name,token,MagickPathExtent);
2400 n=1;
2401 for (p=q; *p != '\0'; )
2402 {
2403 if (GetNextToken(p,&p,extent,token) < 1)
2404 break;
2405 if (*token == '\0')
2406 break;
2407 if (LocaleCompare(token,"pop") == 0)
2408 {
2409 end=p-strlen(token)-1;
2410 n--;
2411 }
2412 if (LocaleCompare(token,"push") == 0)
2413 n++;
2414 if ((n == 0) && (end >= start))
2415 {
2416 size_t
2417 length=(size_t) (end-start);
2418
2419 /*
2420 Extract macro.
2421 */
2422 (void) GetNextToken(p,&p,extent,token);
2423 if (length > 0)
2424 {
2425 (void) CopyMagickString(macro,start,length);
2426 (void) AddValueToSplayTree(macros,ConstantString(name),
2427 ConstantString(macro));
2428 }
2429 break;
2430 }
2431 }
2432 }
2433 }
2434 }
2435 token=DestroyString(token);
2436 macro=DestroyString(macro);
2437 return(macros);
2438}
2439
2440static inline MagickBooleanType IsPoint(const char *point)
2441{
2442 char
2443 *p;
2444
2445 double
2446 value;
2447
2448 value=GetDrawValue(point,&p);
2449 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2450 MagickTrue);
2451}
2452
2453static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2454 const PointInfo point)
2455{
2456 primitive_info->coordinates=1;
2457 primitive_info->closed_subpath=MagickFalse;
2458 primitive_info->point=point;
2459 return(MagickTrue);
2460}
2461
2462static MagickBooleanType RenderMVGContent(Image *image,
2463 const DrawInfo *draw_info,const size_t depth)
2464{
2465#define RenderImageTag "Render/Image"
2466
2467 AffineMatrix
2468 affine,
2469 current;
2470
2471 char
2472 key[2*MaxTextExtent],
2473 keyword[MaxTextExtent],
2474 geometry[MaxTextExtent],
2475 name[MaxTextExtent],
2476 *next_token,
2477 pattern[MaxTextExtent],
2478 *primitive,
2479 *token;
2480
2481 const char
2482 *p,
2483 *q;
2484
2485 double
2486 angle,
2487 coordinates,
2488 cursor,
2489 factor,
2490 primitive_extent;
2491
2492 DrawInfo
2493 *clone_info,
2494 **graphic_context;
2495
2496 MagickBooleanType
2497 proceed;
2498
2499 MagickStatusType
2500 status;
2501
2502 MVGInfo
2503 mvg_info;
2504
2505 PointInfo
2506 point;
2507
2508 PixelPacket
2509 start_color;
2510
2511 PrimitiveInfo
2512 *primitive_info;
2513
2514 PrimitiveType
2515 primitive_type;
2516
2517 SegmentInfo
2518 bounds;
2519
2520 size_t
2521 extent,
2522 number_points;
2523
2524 SplayTreeInfo
2525 *macros;
2526
2527 ssize_t
2528 defsDepth,
2529 i,
2530 j,
2531 k,
2532 n,
2533 symbolDepth,
2534 x;
2535
2536 TypeMetric
2537 metrics;
2538
2539 assert(image != (Image *) NULL);
2540 assert(image->signature == MagickCoreSignature);
2541 assert(draw_info != (DrawInfo *) NULL);
2542 assert(draw_info->signature == MagickCoreSignature);
2543 if (IsEventLogging() != MagickFalse)
2544 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2545 if (depth > MagickMaxRecursionDepth)
2546 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2547 image->filename);
2548 if ((draw_info->primitive == (char *) NULL) ||
2549 (*draw_info->primitive == '\0'))
2550 return(MagickFalse);
2551 if (draw_info->debug != MagickFalse)
2552 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2553 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2554 return(MagickFalse);
2555 if (image->matte == MagickFalse)
2556 {
2557 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2558 if (status == MagickFalse)
2559 return(MagickFalse);
2560 }
2561 primitive=(char *) NULL;
2562 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2563 (*(draw_info->primitive+1) != '-') && (depth == 0))
2564 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2565 else
2566 primitive=AcquireString(draw_info->primitive);
2567 if (primitive == (char *) NULL)
2568 return(MagickFalse);
2569 primitive_extent=(double) strlen(primitive);
2570 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2571 n=0;
2572 /*
2573 Allocate primitive info memory.
2574 */
2575 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2576 if (graphic_context == (DrawInfo **) NULL)
2577 {
2578 primitive=DestroyString(primitive);
2579 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2580 image->filename);
2581 }
2582 number_points=(size_t) PrimitiveExtentPad;
2583 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2584 (number_points+1),sizeof(*primitive_info));
2585 if (primitive_info == (PrimitiveInfo *) NULL)
2586 {
2587 primitive=DestroyString(primitive);
2588 for ( ; n >= 0; n--)
2589 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2590 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2591 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2592 image->filename);
2593 }
2594 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2595 sizeof(*primitive_info));
2596 (void) memset(&mvg_info,0,sizeof(mvg_info));
2597 mvg_info.primitive_info=(&primitive_info);
2598 mvg_info.extent=(&number_points);
2599 mvg_info.exception=(&image->exception);
2600 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2601 graphic_context[n]->viewbox=image->page;
2602 if ((image->page.width == 0) || (image->page.height == 0))
2603 {
2604 graphic_context[n]->viewbox.width=image->columns;
2605 graphic_context[n]->viewbox.height=image->rows;
2606 }
2607 token=AcquireString(primitive);
2608 extent=strlen(token)+MaxTextExtent;
2609 cursor=0.0;
2610 defsDepth=0;
2611 symbolDepth=0;
2612 macros=GetMVGMacros(primitive);
2613 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2614 for (q=primitive; *q != '\0'; )
2615 {
2616 /*
2617 Interpret graphic primitive.
2618 */
2619 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2620 break;
2621 if (*keyword == '\0')
2622 break;
2623 if (*keyword == '#')
2624 {
2625 /*
2626 Comment.
2627 */
2628 while ((*q != '\n') && (*q != '\0'))
2629 q++;
2630 continue;
2631 }
2632 p=q-strlen(keyword)-1;
2633 primitive_type=UndefinedPrimitive;
2634 current=graphic_context[n]->affine;
2635 GetAffineMatrix(&affine);
2636 *token='\0';
2637 switch (*keyword)
2638 {
2639 case ';':
2640 break;
2641 case 'a':
2642 case 'A':
2643 {
2644 if (LocaleCompare("affine",keyword) == 0)
2645 {
2646 (void) GetNextToken(q,&q,extent,token);
2647 affine.sx=GetDrawValue(token,&next_token);
2648 if (token == next_token)
2649 ThrowPointExpectedException(image,token);
2650 (void) GetNextToken(q,&q,extent,token);
2651 if (*token == ',')
2652 (void) GetNextToken(q,&q,extent,token);
2653 affine.ry=GetDrawValue(token,&next_token);
2654 if (token == next_token)
2655 ThrowPointExpectedException(image,token);
2656 (void) GetNextToken(q,&q,extent,token);
2657 if (*token == ',')
2658 (void) GetNextToken(q,&q,extent,token);
2659 affine.rx=GetDrawValue(token,&next_token);
2660 if (token == next_token)
2661 ThrowPointExpectedException(image,token);
2662 (void) GetNextToken(q,&q,extent,token);
2663 if (*token == ',')
2664 (void) GetNextToken(q,&q,extent,token);
2665 affine.sy=GetDrawValue(token,&next_token);
2666 if (token == next_token)
2667 ThrowPointExpectedException(image,token);
2668 (void) GetNextToken(q,&q,extent,token);
2669 if (*token == ',')
2670 (void) GetNextToken(q,&q,extent,token);
2671 affine.tx=GetDrawValue(token,&next_token);
2672 if (token == next_token)
2673 ThrowPointExpectedException(image,token);
2674 (void) GetNextToken(q,&q,extent,token);
2675 if (*token == ',')
2676 (void) GetNextToken(q,&q,extent,token);
2677 affine.ty=GetDrawValue(token,&next_token);
2678 if (token == next_token)
2679 ThrowPointExpectedException(image,token);
2680 break;
2681 }
2682 if (LocaleCompare("arc",keyword) == 0)
2683 {
2684 primitive_type=ArcPrimitive;
2685 break;
2686 }
2687 status=MagickFalse;
2688 break;
2689 }
2690 case 'b':
2691 case 'B':
2692 {
2693 if (LocaleCompare("bezier",keyword) == 0)
2694 {
2695 primitive_type=BezierPrimitive;
2696 break;
2697 }
2698 if (LocaleCompare("border-color",keyword) == 0)
2699 {
2700 (void) GetNextToken(q,&q,extent,token);
2701 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2702 &image->exception);
2703 break;
2704 }
2705 status=MagickFalse;
2706 break;
2707 }
2708 case 'c':
2709 case 'C':
2710 {
2711 if (LocaleCompare("class",keyword) == 0)
2712 {
2713 const char
2714 *mvg_class;
2715
2716 (void) GetNextToken(q,&q,extent,token);
2717 if ((*token == '\0') || (*token == ';'))
2718 {
2719 status=MagickFalse;
2720 break;
2721 }
2722 /*
2723 Identify recursion.
2724 */
2725 for (i=0; i <= n; i++)
2726 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2727 break;
2728 if (i <= n)
2729 break;
2730 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2731 if ((graphic_context[n]->render != MagickFalse) &&
2732 (mvg_class != (const char *) NULL) && (p > primitive))
2733 {
2734 char
2735 *elements;
2736
2737 ssize_t
2738 offset;
2739
2740 /*
2741 Inject class elements in stream.
2742 */
2743 (void) CloneString(&graphic_context[n]->id,token);
2744 offset=(ssize_t) (p-primitive);
2745 elements=AcquireString(primitive);
2746 elements[offset]='\0';
2747 (void) ConcatenateString(&elements,mvg_class);
2748 (void) ConcatenateString(&elements,"\n");
2749 (void) ConcatenateString(&elements,q);
2750 primitive=DestroyString(primitive);
2751 primitive=elements;
2752 q=primitive+offset;
2753 }
2754 break;
2755 }
2756 if (LocaleCompare("clip-path",keyword) == 0)
2757 {
2758 const char
2759 *clip_path;
2760
2761 /*
2762 Take a node from within the MVG document, and duplicate it here.
2763 */
2764 (void) GetNextToken(q,&q,extent,token);
2765 if (*token == '\0')
2766 {
2767 status=MagickFalse;
2768 break;
2769 }
2770 (void) CloneString(&graphic_context[n]->clip_mask,token);
2771 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2772 if (clip_path != (const char *) NULL)
2773 {
2774 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2775 graphic_context[n]->clipping_mask=
2776 DestroyImage(graphic_context[n]->clipping_mask);
2777 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2778 graphic_context[n],token,clip_path,&image->exception);
2779 if (graphic_context[n]->compliance != SVGCompliance)
2780 {
2781 const char
2782 *clip_path;
2783
2784 clip_path=(const char *) GetValueFromSplayTree(macros,
2785 graphic_context[n]->clip_mask);
2786 if (clip_path != (const char *) NULL)
2787 (void) SetImageArtifact(image,
2788 graphic_context[n]->clip_mask,clip_path);
2789 status&=DrawClipPath(image,graphic_context[n],
2790 graphic_context[n]->clip_mask);
2791 }
2792 }
2793 break;
2794 }
2795 if (LocaleCompare("clip-rule",keyword) == 0)
2796 {
2797 ssize_t
2798 fill_rule;
2799
2800 (void) GetNextToken(q,&q,extent,token);
2801 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2802 token);
2803 if (fill_rule == -1)
2804 {
2805 status=MagickFalse;
2806 break;
2807 }
2808 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2809 break;
2810 }
2811 if (LocaleCompare("clip-units",keyword) == 0)
2812 {
2813 ssize_t
2814 clip_units;
2815
2816 (void) GetNextToken(q,&q,extent,token);
2817 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2818 token);
2819 if (clip_units == -1)
2820 {
2821 status=MagickFalse;
2822 break;
2823 }
2824 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2825 if (clip_units == ObjectBoundingBox)
2826 {
2827 GetAffineMatrix(&current);
2828 affine.sx=draw_info->bounds.x2;
2829 affine.sy=draw_info->bounds.y2;
2830 affine.tx=draw_info->bounds.x1;
2831 affine.ty=draw_info->bounds.y1;
2832 break;
2833 }
2834 break;
2835 }
2836 if (LocaleCompare("circle",keyword) == 0)
2837 {
2838 primitive_type=CirclePrimitive;
2839 break;
2840 }
2841 if (LocaleCompare("color",keyword) == 0)
2842 {
2843 primitive_type=ColorPrimitive;
2844 break;
2845 }
2846 if (LocaleCompare("compliance",keyword) == 0)
2847 {
2848 /*
2849 MVG compliance associates a clipping mask with an image; SVG
2850 compliance associates a clipping mask with a graphics context.
2851 */
2852 (void) GetNextToken(q,&q,extent,token);
2853 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2854 MagickComplianceOptions,MagickFalse,token);
2855 break;
2856 }
2857 if (LocaleCompare("currentColor",keyword) == 0)
2858 {
2859 (void) GetNextToken(q,&q,extent,token);
2860 break;
2861 }
2862 status=MagickFalse;
2863 break;
2864 }
2865 case 'd':
2866 case 'D':
2867 {
2868 if (LocaleCompare("decorate",keyword) == 0)
2869 {
2870 ssize_t
2871 decorate;
2872
2873 (void) GetNextToken(q,&q,extent,token);
2874 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2875 token);
2876 if (decorate == -1)
2877 {
2878 status=MagickFalse;
2879 break;
2880 }
2881 graphic_context[n]->decorate=(DecorationType) decorate;
2882 break;
2883 }
2884 if (LocaleCompare("density",keyword) == 0)
2885 {
2886 (void) GetNextToken(q,&q,extent,token);
2887 (void) CloneString(&graphic_context[n]->density,token);
2888 break;
2889 }
2890 if (LocaleCompare("direction",keyword) == 0)
2891 {
2892 ssize_t
2893 direction;
2894
2895 (void) GetNextToken(q,&q,extent,token);
2896 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2897 token);
2898 if (direction == -1)
2899 status=MagickFalse;
2900 else
2901 graphic_context[n]->direction=(DirectionType) direction;
2902 break;
2903 }
2904 status=MagickFalse;
2905 break;
2906 }
2907 case 'e':
2908 case 'E':
2909 {
2910 if (LocaleCompare("ellipse",keyword) == 0)
2911 {
2912 primitive_type=EllipsePrimitive;
2913 break;
2914 }
2915 if (LocaleCompare("encoding",keyword) == 0)
2916 {
2917 (void) GetNextToken(q,&q,extent,token);
2918 (void) CloneString(&graphic_context[n]->encoding,token);
2919 break;
2920 }
2921 status=MagickFalse;
2922 break;
2923 }
2924 case 'f':
2925 case 'F':
2926 {
2927 if (LocaleCompare("fill",keyword) == 0)
2928 {
2929 const char
2930 *mvg_class;
2931
2932 (void) GetNextToken(q,&q,extent,token);
2933 if (graphic_context[n]->clip_path != MagickFalse)
2934 break;
2935 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2936 if (mvg_class != (const char *) NULL)
2937 {
2938 (void) DrawPatternPath(image,draw_info,mvg_class,
2939 &graphic_context[n]->fill_pattern);
2940 break;
2941 }
2942 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2943 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2944 {
2945 (void) DrawPatternPath(image,draw_info,token,
2946 &graphic_context[n]->fill_pattern);
2947 break;
2948 }
2949 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2950 &image->exception);
2951 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2952 graphic_context[n]->fill.opacity=ClampToQuantum(
2953 graphic_context[n]->fill_opacity);
2954 break;
2955 }
2956 if (LocaleCompare("fill-opacity",keyword) == 0)
2957 {
2958 double
2959 opacity;
2960
2961 (void) GetNextToken(q,&q,extent,token);
2962 if (graphic_context[n]->clip_path != MagickFalse)
2963 break;
2964 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2965 opacity=MagickMin(MagickMax(factor*
2966 GetDrawValue(token,&next_token),0.0),1.0);
2967 if (token == next_token)
2968 ThrowPointExpectedException(image,token);
2969 if (graphic_context[n]->compliance == SVGCompliance)
2970 graphic_context[n]->fill_opacity*=(1.0-opacity);
2971 else
2972 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2973 graphic_context[n]->fill_opacity)*(1.0-opacity);
2974 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2975 graphic_context[n]->fill.opacity=(Quantum)
2976 graphic_context[n]->fill_opacity;
2977 else
2978 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2979 QuantumRange*(1.0-opacity));
2980 break;
2981 }
2982 if (LocaleCompare("fill-rule",keyword) == 0)
2983 {
2984 ssize_t
2985 fill_rule;
2986
2987 (void) GetNextToken(q,&q,extent,token);
2988 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2989 token);
2990 if (fill_rule == -1)
2991 {
2992 status=MagickFalse;
2993 break;
2994 }
2995 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2996 break;
2997 }
2998 if (LocaleCompare("font",keyword) == 0)
2999 {
3000 (void) GetNextToken(q,&q,extent,token);
3001 (void) CloneString(&graphic_context[n]->font,token);
3002 if (LocaleCompare("none",token) == 0)
3003 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3004 graphic_context[n]->font);
3005 break;
3006 }
3007 if (LocaleCompare("font-family",keyword) == 0)
3008 {
3009 (void) GetNextToken(q,&q,extent,token);
3010 (void) CloneString(&graphic_context[n]->family,token);
3011 break;
3012 }
3013 if (LocaleCompare("font-size",keyword) == 0)
3014 {
3015 (void) GetNextToken(q,&q,extent,token);
3016 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3017 if (token == next_token)
3018 ThrowPointExpectedException(image,token);
3019 break;
3020 }
3021 if (LocaleCompare("font-stretch",keyword) == 0)
3022 {
3023 ssize_t
3024 stretch;
3025
3026 (void) GetNextToken(q,&q,extent,token);
3027 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3028 if (stretch == -1)
3029 {
3030 status=MagickFalse;
3031 break;
3032 }
3033 graphic_context[n]->stretch=(StretchType) stretch;
3034 break;
3035 }
3036 if (LocaleCompare("font-style",keyword) == 0)
3037 {
3038 ssize_t
3039 style;
3040
3041 (void) GetNextToken(q,&q,extent,token);
3042 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3043 if (style == -1)
3044 {
3045 status=MagickFalse;
3046 break;
3047 }
3048 graphic_context[n]->style=(StyleType) style;
3049 break;
3050 }
3051 if (LocaleCompare("font-weight",keyword) == 0)
3052 {
3053 ssize_t
3054 weight;
3055
3056 (void) GetNextToken(q,&q,extent,token);
3057 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3058 if (weight == -1)
3059 weight=(ssize_t) StringToUnsignedLong(token);
3060 graphic_context[n]->weight=(size_t) weight;
3061 break;
3062 }
3063 status=MagickFalse;
3064 break;
3065 }
3066 case 'g':
3067 case 'G':
3068 {
3069 if (LocaleCompare("gradient-units",keyword) == 0)
3070 {
3071 (void) GetNextToken(q,&q,extent,token);
3072 break;
3073 }
3074 if (LocaleCompare("gravity",keyword) == 0)
3075 {
3076 ssize_t
3077 gravity;
3078
3079 (void) GetNextToken(q,&q,extent,token);
3080 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3081 if (gravity == -1)
3082 {
3083 status=MagickFalse;
3084 break;
3085 }
3086 graphic_context[n]->gravity=(GravityType) gravity;
3087 break;
3088 }
3089 status=MagickFalse;
3090 break;
3091 }
3092 case 'i':
3093 case 'I':
3094 {
3095 if (LocaleCompare("image",keyword) == 0)
3096 {
3097 ssize_t
3098 compose;
3099
3100 primitive_type=ImagePrimitive;
3101 (void) GetNextToken(q,&q,extent,token);
3102 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3103 if (compose == -1)
3104 {
3105 status=MagickFalse;
3106 break;
3107 }
3108 graphic_context[n]->compose=(CompositeOperator) compose;
3109 break;
3110 }
3111 if (LocaleCompare("interline-spacing",keyword) == 0)
3112 {
3113 (void) GetNextToken(q,&q,extent,token);
3114 graphic_context[n]->interline_spacing=GetDrawValue(token,
3115 &next_token);
3116 if (token == next_token)
3117 ThrowPointExpectedException(image,token);
3118 break;
3119 }
3120 if (LocaleCompare("interword-spacing",keyword) == 0)
3121 {
3122 (void) GetNextToken(q,&q,extent,token);
3123 graphic_context[n]->interword_spacing=GetDrawValue(token,
3124 &next_token);
3125 if (token == next_token)
3126 ThrowPointExpectedException(image,token);
3127 break;
3128 }
3129 status=MagickFalse;
3130 break;
3131 }
3132 case 'k':
3133 case 'K':
3134 {
3135 if (LocaleCompare("kerning",keyword) == 0)
3136 {
3137 (void) GetNextToken(q,&q,extent,token);
3138 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3139 if (token == next_token)
3140 ThrowPointExpectedException(image,token);
3141 break;
3142 }
3143 status=MagickFalse;
3144 break;
3145 }
3146 case 'l':
3147 case 'L':
3148 {
3149 if (LocaleCompare("letter-spacing",keyword) == 0)
3150 {
3151 (void) GetNextToken(q,&q,extent,token);
3152 if (IsPoint(token) == MagickFalse)
3153 break;
3154 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3155 clone_info->text=AcquireString(" ");
3156 status&=GetTypeMetrics(image,clone_info,&metrics);
3157 graphic_context[n]->kerning=metrics.width*
3158 GetDrawValue(token,&next_token);
3159 clone_info=DestroyDrawInfo(clone_info);
3160 if (token == next_token)
3161 ThrowPointExpectedException(image,token);
3162 break;
3163 }
3164 if (LocaleCompare("line",keyword) == 0)
3165 {
3166 primitive_type=LinePrimitive;
3167 break;
3168 }
3169 status=MagickFalse;
3170 break;
3171 }
3172 case 'm':
3173 case 'M':
3174 {
3175 if (LocaleCompare("mask",keyword) == 0)
3176 {
3177 const char
3178 *mask_path;
3179
3180 /*
3181 Take a node from within the MVG document, and duplicate it here.
3182 */
3183 (void) GetNextToken(q,&q,extent,token);
3184 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3185 if (mask_path != (const char *) NULL)
3186 {
3187 if (graphic_context[n]->composite_mask != (Image *) NULL)
3188 graphic_context[n]->composite_mask=
3189 DestroyImage(graphic_context[n]->composite_mask);
3190 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3191 graphic_context[n],token,mask_path,&image->exception);
3192 if (graphic_context[n]->compliance != SVGCompliance)
3193 status=SetImageMask(image,graphic_context[n]->composite_mask);
3194 }
3195 break;
3196 }
3197 if (LocaleCompare("matte",keyword) == 0)
3198 {
3199 primitive_type=MattePrimitive;
3200 break;
3201 }
3202 status=MagickFalse;
3203 break;
3204 }
3205 case 'o':
3206 case 'O':
3207 {
3208 if (LocaleCompare("offset",keyword) == 0)
3209 {
3210 (void) GetNextToken(q,&q,extent,token);
3211 break;
3212 }
3213 if (LocaleCompare("opacity",keyword) == 0)
3214 {
3215 double
3216 opacity;
3217
3218 (void) GetNextToken(q,&q,extent,token);
3219 if (graphic_context[n]->clip_path != MagickFalse)
3220 break;
3221 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3222 opacity=1.0-MagickMin(MagickMax(factor*
3223 GetDrawValue(token,&next_token),0.0),1.0);
3224 if (token == next_token)
3225 ThrowPointExpectedException(image,token);
3226 if (graphic_context[n]->compliance == SVGCompliance)
3227 {
3228 graphic_context[n]->fill_opacity*=opacity;
3229 graphic_context[n]->stroke_opacity*=opacity;
3230 }
3231 else
3232 {
3233 graphic_context[n]->fill_opacity=(double) QuantumRange*opacity;
3234 graphic_context[n]->stroke_opacity=(double) QuantumRange*
3235 opacity;
3236 }
3237 if (graphic_context[n]->fill.opacity != (double) TransparentOpacity)
3238 {
3239 graphic_context[n]->fill.opacity=
3240 graphic_context[n]->fill_opacity;
3241 graphic_context[n]->stroke.opacity=
3242 graphic_context[n]->stroke_opacity;
3243 }
3244 else
3245 {
3246 graphic_context[n]->fill.opacity=(MagickRealType)
3247 ClampToQuantum((double) QuantumRange*opacity);
3248 graphic_context[n]->stroke.opacity=(MagickRealType)
3249 ClampToQuantum((double) QuantumRange*opacity);
3250 }
3251 break;
3252 }
3253 status=MagickFalse;
3254 break;
3255 }
3256 case 'p':
3257 case 'P':
3258 {
3259 if (LocaleCompare("path",keyword) == 0)
3260 {
3261 primitive_type=PathPrimitive;
3262 break;
3263 }
3264 if (LocaleCompare("point",keyword) == 0)
3265 {
3266 primitive_type=PointPrimitive;
3267 break;
3268 }
3269 if (LocaleCompare("polyline",keyword) == 0)
3270 {
3271 primitive_type=PolylinePrimitive;
3272 break;
3273 }
3274 if (LocaleCompare("polygon",keyword) == 0)
3275 {
3276 primitive_type=PolygonPrimitive;
3277 break;
3278 }
3279 if (LocaleCompare("pop",keyword) == 0)
3280 {
3281 if (GetNextToken(q,&q,extent,token) < 1)
3282 break;
3283 if (LocaleCompare("class",token) == 0)
3284 break;
3285 if (LocaleCompare("clip-path",token) == 0)
3286 break;
3287 if (LocaleCompare("defs",token) == 0)
3288 {
3289 defsDepth--;
3290 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3291 MagickTrue;
3292 break;
3293 }
3294 if (LocaleCompare("gradient",token) == 0)
3295 break;
3296 if (LocaleCompare("graphic-context",token) == 0)
3297 {
3298 if (n <= 0)
3299 {
3300 (void) ThrowMagickException(&image->exception,
3301 GetMagickModule(),DrawError,
3302 "UnbalancedGraphicContextPushPop","`%s'",token);
3303 status=MagickFalse;
3304 n=0;
3305 break;
3306 }
3307 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3308 (graphic_context[n]->compliance != SVGCompliance))
3309 if (LocaleCompare(graphic_context[n]->clip_mask,
3310 graphic_context[n-1]->clip_mask) != 0)
3311 status=SetImageClipMask(image,(Image *) NULL);
3312 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3313 n--;
3314 break;
3315 }
3316 if (LocaleCompare("mask",token) == 0)
3317 break;
3318 if (LocaleCompare("pattern",token) == 0)
3319 break;
3320 if (LocaleCompare("symbol",token) == 0)
3321 {
3322 symbolDepth--;
3323 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3324 MagickTrue;
3325 break;
3326 }
3327 status=MagickFalse;
3328 break;
3329 }
3330 if (LocaleCompare("push",keyword) == 0)
3331 {
3332 if (GetNextToken(q,&q,extent,token) < 1)
3333 break;
3334 if (LocaleCompare("class",token) == 0)
3335 {
3336 /*
3337 Class context.
3338 */
3339 for (p=q; *q != '\0'; )
3340 {
3341 if (GetNextToken(q,&q,extent,token) < 1)
3342 break;
3343 if (LocaleCompare(token,"pop") != 0)
3344 continue;
3345 (void) GetNextToken(q,(const char **) NULL,extent,token);
3346 if (LocaleCompare(token,"class") != 0)
3347 continue;
3348 break;
3349 }
3350 (void) GetNextToken(q,&q,extent,token);
3351 break;
3352 }
3353 if (LocaleCompare("clip-path",token) == 0)
3354 {
3355 (void) GetNextToken(q,&q,extent,token);
3356 for (p=q; *q != '\0'; )
3357 {
3358 if (GetNextToken(q,&q,extent,token) < 1)
3359 break;
3360 if (LocaleCompare(token,"pop") != 0)
3361 continue;
3362 (void) GetNextToken(q,(const char **) NULL,extent,token);
3363 if (LocaleCompare(token,"clip-path") != 0)
3364 continue;
3365 break;
3366 }
3367 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3368 {
3369 status=MagickFalse;
3370 break;
3371 }
3372 (void) GetNextToken(q,&q,extent,token);
3373 break;
3374 }
3375 if (LocaleCompare("defs",token) == 0)
3376 {
3377 defsDepth++;
3378 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3379 MagickTrue;
3380 break;
3381 }
3382 if (LocaleCompare("gradient",token) == 0)
3383 {
3384 char
3385 key[2*MaxTextExtent],
3386 name[MaxTextExtent],
3387 type[MaxTextExtent];
3388
3389 SegmentInfo
3390 segment;
3391
3392 (void) GetNextToken(q,&q,extent,token);
3393 (void) CopyMagickString(name,token,MaxTextExtent);
3394 (void) GetNextToken(q,&q,extent,token);
3395 (void) CopyMagickString(type,token,MaxTextExtent);
3396 (void) GetNextToken(q,&q,extent,token);
3397 segment.x1=GetDrawValue(token,&next_token);
3398 if (token == next_token)
3399 ThrowPointExpectedException(image,token);
3400 (void) GetNextToken(q,&q,extent,token);
3401 if (*token == ',')
3402 (void) GetNextToken(q,&q,extent,token);
3403 segment.y1=GetDrawValue(token,&next_token);
3404 if (token == next_token)
3405 ThrowPointExpectedException(image,token);
3406 (void) GetNextToken(q,&q,extent,token);
3407 if (*token == ',')
3408 (void) GetNextToken(q,&q,extent,token);
3409 segment.x2=GetDrawValue(token,&next_token);
3410 if (token == next_token)
3411 ThrowPointExpectedException(image,token);
3412 (void) GetNextToken(q,&q,extent,token);
3413 if (*token == ',')
3414 (void) GetNextToken(q,&q,extent,token);
3415 segment.y2=GetDrawValue(token,&next_token);
3416 if (token == next_token)
3417 ThrowPointExpectedException(image,token);
3418 if (LocaleCompare(type,"radial") == 0)
3419 {
3420 (void) GetNextToken(q,&q,extent,token);
3421 if (*token == ',')
3422 (void) GetNextToken(q,&q,extent,token);
3423 }
3424 for (p=q; *q != '\0'; )
3425 {
3426 if (GetNextToken(q,&q,extent,token) < 1)
3427 break;
3428 if (LocaleCompare(token,"pop") != 0)
3429 continue;
3430 (void) GetNextToken(q,(const char **) NULL,extent,token);
3431 if (LocaleCompare(token,"gradient") != 0)
3432 continue;
3433 break;
3434 }
3435 if ((q == (char *) NULL) || (*q == '\0') ||
3436 (p == (char *) NULL) || ((q-4) < p) ||
3437 ((q-p+4+1) > MagickPathExtent))
3438 {
3439 status=MagickFalse;
3440 break;
3441 }
3442 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3443 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3444 graphic_context[n]->affine.ry*segment.y1+
3445 graphic_context[n]->affine.tx;
3446 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3447 graphic_context[n]->affine.sy*segment.y1+
3448 graphic_context[n]->affine.ty;
3449 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3450 graphic_context[n]->affine.ry*segment.y2+
3451 graphic_context[n]->affine.tx;
3452 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3453 graphic_context[n]->affine.sy*segment.y2+
3454 graphic_context[n]->affine.ty;
3455 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3456 (void) SetImageArtifact(image,key,token);
3457 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3458 (void) SetImageArtifact(image,key,type);
3459 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3460 (void) FormatLocaleString(geometry,MaxTextExtent,
3461 "%gx%g%+.15g%+.15g",
3462 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3463 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3464 bounds.x1,bounds.y1);
3465 (void) SetImageArtifact(image,key,geometry);
3466 (void) GetNextToken(q,&q,extent,token);
3467 break;
3468 }
3469 if (LocaleCompare("graphic-context",token) == 0)
3470 {
3471 n++;
3472 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3473 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3474 if (graphic_context == (DrawInfo **) NULL)
3475 {
3476 (void) ThrowMagickException(&image->exception,
3477 GetMagickModule(),ResourceLimitError,
3478 "MemoryAllocationFailed","`%s'",image->filename);
3479 status=MagickFalse;
3480 break;
3481 }
3482 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3483 graphic_context[n-1]);
3484 if (*q == '"')
3485 {
3486 (void) GetNextToken(q,&q,extent,token);
3487 (void) CloneString(&graphic_context[n]->id,token);
3488 }
3489 if (n > MagickMaxRecursionDepth)
3490 {
3491 (void) ThrowMagickException(&image->exception,
3492 GetMagickModule(),DrawError,"VectorGraphicsNestedTooDeeply",
3493 "`%s'",image->filename);
3494 status=MagickFalse;
3495 }
3496 break;
3497 }
3498 if (LocaleCompare("mask",token) == 0)
3499 {
3500 (void) GetNextToken(q,&q,extent,token);
3501 break;
3502 }
3503 if (LocaleCompare("pattern",token) == 0)
3504 {
3505 RectangleInfo
3506 bounds;
3507
3508 (void) GetNextToken(q,&q,extent,token);
3509 (void) CopyMagickString(name,token,MaxTextExtent);
3510 (void) GetNextToken(q,&q,extent,token);
3511 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3512 &next_token)-0.5));
3513 if (token == next_token)
3514 ThrowPointExpectedException(image,token);
3515 (void) GetNextToken(q,&q,extent,token);
3516 if (*token == ',')
3517 (void) GetNextToken(q,&q,extent,token);
3518 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3519 &next_token)-0.5));
3520 if (token == next_token)
3521 ThrowPointExpectedException(image,token);
3522 (void) GetNextToken(q,&q,extent,token);
3523 if (*token == ',')
3524 (void) GetNextToken(q,&q,extent,token);
3525 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3526 &next_token)+0.5);
3527 if (token == next_token)
3528 ThrowPointExpectedException(image,token);
3529 (void) GetNextToken(q,&q,extent,token);
3530 if (*token == ',')
3531 (void) GetNextToken(q,&q,extent,token);
3532 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3533 &next_token)+0.5);
3534 if (token == next_token)
3535 ThrowPointExpectedException(image,token);
3536 for (p=q; *q != '\0'; )
3537 {
3538 if (GetNextToken(q,&q,extent,token) < 1)
3539 break;
3540 if (LocaleCompare(token,"pop") != 0)
3541 continue;
3542 (void) GetNextToken(q,(const char **) NULL,extent,token);
3543 if (LocaleCompare(token,"pattern") != 0)
3544 continue;
3545 break;
3546 }
3547 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p) ||
3548 ((q-p+4+1) > MagickPathExtent))
3549 {
3550 status=MagickFalse;
3551 break;
3552 }
3553 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3554 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3555 (void) SetImageArtifact(image,key,token);
3556 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3557 (void) FormatLocaleString(geometry,MaxTextExtent,
3558 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3559 bounds.height,(double) bounds.x,(double) bounds.y);
3560 (void) SetImageArtifact(image,key,geometry);
3561 (void) GetNextToken(q,&q,extent,token);
3562 break;
3563 }
3564 if (LocaleCompare("symbol",token) == 0)
3565 {
3566 symbolDepth++;
3567 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3568 MagickTrue;
3569 break;
3570 }
3571 status=MagickFalse;
3572 break;
3573 }
3574 status=MagickFalse;
3575 break;
3576 }
3577 case 'r':
3578 case 'R':
3579 {
3580 if (LocaleCompare("rectangle",keyword) == 0)
3581 {
3582 primitive_type=RectanglePrimitive;
3583 break;
3584 }
3585 if (LocaleCompare("rotate",keyword) == 0)
3586 {
3587 (void) GetNextToken(q,&q,extent,token);
3588 angle=GetDrawValue(token,&next_token);
3589 if (token == next_token)
3590 ThrowPointExpectedException(image,token);
3591 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3592 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3593 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3594 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3595 break;
3596 }
3597 if (LocaleCompare("roundRectangle",keyword) == 0)
3598 {
3599 primitive_type=RoundRectanglePrimitive;
3600 break;
3601 }
3602 status=MagickFalse;
3603 break;
3604 }
3605 case 's':
3606 case 'S':
3607 {
3608 if (LocaleCompare("scale",keyword) == 0)
3609 {
3610 (void) GetNextToken(q,&q,extent,token);
3611 affine.sx=GetDrawValue(token,&next_token);
3612 if (token == next_token)
3613 ThrowPointExpectedException(image,token);
3614 (void) GetNextToken(q,&q,extent,token);
3615 if (*token == ',')
3616 (void) GetNextToken(q,&q,extent,token);
3617 affine.sy=GetDrawValue(token,&next_token);
3618 if (token == next_token)
3619 ThrowPointExpectedException(image,token);
3620 break;
3621 }
3622 if (LocaleCompare("skewX",keyword) == 0)
3623 {
3624 (void) GetNextToken(q,&q,extent,token);
3625 angle=GetDrawValue(token,&next_token);
3626 if (token == next_token)
3627 ThrowPointExpectedException(image,token);
3628 affine.ry=sin(DegreesToRadians(angle));
3629 break;
3630 }
3631 if (LocaleCompare("skewY",keyword) == 0)
3632 {
3633 (void) GetNextToken(q,&q,extent,token);
3634 angle=GetDrawValue(token,&next_token);
3635 if (token == next_token)
3636 ThrowPointExpectedException(image,token);
3637 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3638 break;
3639 }
3640 if (LocaleCompare("stop-color",keyword) == 0)
3641 {
3642 GradientType
3643 type;
3644
3645 PixelPacket
3646 stop_color;
3647
3648 (void) GetNextToken(q,&q,extent,token);
3649 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3650 type=LinearGradient;
3651 if (draw_info->gradient.type == RadialGradient)
3652 type=RadialGradient;
3653 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3654 start_color=stop_color;
3655 (void) GetNextToken(q,&q,extent,token);
3656 break;
3657 }
3658 if (LocaleCompare("stroke",keyword) == 0)
3659 {
3660 const char
3661 *mvg_class;
3662
3663 (void) GetNextToken(q,&q,extent,token);
3664 if (graphic_context[n]->clip_path != MagickFalse)
3665 break;
3666 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3667 if (mvg_class != (const char *) NULL)
3668 {
3669 (void) DrawPatternPath(image,draw_info,mvg_class,
3670 &graphic_context[n]->stroke_pattern);
3671 break;
3672 }
3673 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3674 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3675 {
3676 (void) DrawPatternPath(image,draw_info,token,
3677 &graphic_context[n]->stroke_pattern);
3678 break;
3679 }
3680 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3681 &image->exception);
3682 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3683 graphic_context[n]->stroke.opacity=ClampToQuantum(
3684 graphic_context[n]->stroke_opacity);
3685 break;
3686 }
3687 if (LocaleCompare("stroke-antialias",keyword) == 0)
3688 {
3689 (void) GetNextToken(q,&q,extent,token);
3690 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3691 MagickTrue : MagickFalse;
3692 break;
3693 }
3694 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3695 {
3696 if (graphic_context[n]->dash_pattern != (double *) NULL)
3697 graphic_context[n]->dash_pattern=(double *)
3698 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3699 if (IsPoint(q) != MagickFalse)
3700 {
3701 const char
3702 *p;
3703
3704 p=q;
3705 (void) GetNextToken(p,&p,extent,token);
3706 if (*token == ',')
3707 (void) GetNextToken(p,&p,extent,token);
3708 for (x=0; IsPoint(token) != MagickFalse; x++)
3709 {
3710 (void) GetNextToken(p,&p,extent,token);
3711 if (*token == ',')
3712 (void) GetNextToken(p,&p,extent,token);
3713 }
3714 graphic_context[n]->dash_pattern=(double *)
3715 AcquireQuantumMemory((size_t) (2*x+2),
3716 sizeof(*graphic_context[n]->dash_pattern));
3717 if (graphic_context[n]->dash_pattern == (double *) NULL)
3718 {
3719 (void) ThrowMagickException(&image->exception,
3720 GetMagickModule(),ResourceLimitError,
3721 "MemoryAllocationFailed","`%s'",image->filename);
3722 status=MagickFalse;
3723 break;
3724 }
3725 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3726 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3727 for (j=0; j < x; j++)
3728 {
3729 (void) GetNextToken(q,&q,extent,token);
3730 if (*token == ',')
3731 (void) GetNextToken(q,&q,extent,token);
3732 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3733 &next_token);
3734 if (token == next_token)
3735 ThrowPointExpectedException(image,token);
3736 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3737 status=MagickFalse;
3738 }
3739 if ((x & 0x01) != 0)
3740 for ( ; j < (2*x); j++)
3741 graphic_context[n]->dash_pattern[j]=
3742 graphic_context[n]->dash_pattern[j-x];
3743 graphic_context[n]->dash_pattern[j]=0.0;
3744 break;
3745 }
3746 (void) GetNextToken(q,&q,extent,token);
3747 break;
3748 }
3749 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3750 {
3751 (void) GetNextToken(q,&q,extent,token);
3752 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3753 if (token == next_token)
3754 ThrowPointExpectedException(image,token);
3755 break;
3756 }
3757 if (LocaleCompare("stroke-linecap",keyword) == 0)
3758 {
3759 ssize_t
3760 linecap;
3761
3762 (void) GetNextToken(q,&q,extent,token);
3763 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3764 if (linecap == -1)
3765 {
3766 status=MagickFalse;
3767 break;
3768 }
3769 graphic_context[n]->linecap=(LineCap) linecap;
3770 break;
3771 }
3772 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3773 {
3774 ssize_t
3775 linejoin;
3776
3777 (void) GetNextToken(q,&q,extent,token);
3778 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3779 token);
3780 if (linejoin == -1)
3781 {
3782 status=MagickFalse;
3783 break;
3784 }
3785 graphic_context[n]->linejoin=(LineJoin) linejoin;
3786 break;
3787 }
3788 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3789 {
3790 (void) GetNextToken(q,&q,extent,token);
3791 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3792 break;
3793 }
3794 if (LocaleCompare("stroke-opacity",keyword) == 0)
3795 {
3796 double
3797 opacity;
3798
3799 (void) GetNextToken(q,&q,extent,token);
3800 if (graphic_context[n]->clip_path != MagickFalse)
3801 break;
3802 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3803 opacity=MagickMin(MagickMax(factor*
3804 GetDrawValue(token,&next_token),0.0),1.0);
3805 if (token == next_token)
3806 ThrowPointExpectedException(image,token);
3807 if (graphic_context[n]->compliance == SVGCompliance)
3808 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3809 else
3810 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3811 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3812 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3813 graphic_context[n]->stroke.opacity=(Quantum)
3814 graphic_context[n]->stroke_opacity;
3815 else
3816 graphic_context[n]->stroke.opacity=ClampToQuantum(
3817 (MagickRealType) QuantumRange*opacity);
3818 break;
3819 }
3820 if (LocaleCompare("stroke-width",keyword) == 0)
3821 {
3822 (void) GetNextToken(q,&q,extent,token);
3823 if (graphic_context[n]->clip_path != MagickFalse)
3824 break;
3825 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3826 if ((token == next_token) ||
3827 (graphic_context[n]->stroke_width < 0.0))
3828 ThrowPointExpectedException(image,token);
3829 break;
3830 }
3831 status=MagickFalse;
3832 break;
3833 }
3834 case 't':
3835 case 'T':
3836 {
3837 if (LocaleCompare("text",keyword) == 0)
3838 {
3839 primitive_type=TextPrimitive;
3840 cursor=0.0;
3841 break;
3842 }
3843 if (LocaleCompare("text-align",keyword) == 0)
3844 {
3845 ssize_t
3846 align;
3847
3848 (void) GetNextToken(q,&q,extent,token);
3849 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3850 if (align == -1)
3851 {
3852 status=MagickFalse;
3853 break;
3854 }
3855 graphic_context[n]->align=(AlignType) align;
3856 break;
3857 }
3858 if (LocaleCompare("text-anchor",keyword) == 0)
3859 {
3860 ssize_t
3861 align;
3862
3863 (void) GetNextToken(q,&q,extent,token);
3864 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3865 if (align == -1)
3866 {
3867 status=MagickFalse;
3868 break;
3869 }
3870 graphic_context[n]->align=(AlignType) align;
3871 break;
3872 }
3873 if (LocaleCompare("text-antialias",keyword) == 0)
3874 {
3875 (void) GetNextToken(q,&q,extent,token);
3876 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3877 MagickTrue : MagickFalse;
3878 break;
3879 }
3880 if (LocaleCompare("text-undercolor",keyword) == 0)
3881 {
3882 (void) GetNextToken(q,&q,extent,token);
3883 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3884 &image->exception);
3885 break;
3886 }
3887 if (LocaleCompare("translate",keyword) == 0)
3888 {
3889 (void) GetNextToken(q,&q,extent,token);
3890 affine.tx=GetDrawValue(token,&next_token);
3891 if (token == next_token)
3892 ThrowPointExpectedException(image,token);
3893 (void) GetNextToken(q,&q,extent,token);
3894 if (*token == ',')
3895 (void) GetNextToken(q,&q,extent,token);
3896 affine.ty=GetDrawValue(token,&next_token);
3897 if (token == next_token)
3898 ThrowPointExpectedException(image,token);
3899 break;
3900 }
3901 status=MagickFalse;
3902 break;
3903 }
3904 case 'u':
3905 case 'U':
3906 {
3907 if (LocaleCompare("use",keyword) == 0)
3908 {
3909 const char
3910 *use;
3911
3912 /*
3913 Get a macro from the MVG document, and "use" it here.
3914 */
3915 (void) GetNextToken(q,&q,extent,token);
3916 use=(const char *) GetValueFromSplayTree(macros,token);
3917 if (use != (const char *) NULL)
3918 {
3919 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3920 (void) CloneString(&clone_info->primitive,use);
3921 status=RenderMVGContent(image,clone_info,depth+1);
3922 clone_info=DestroyDrawInfo(clone_info);
3923 }
3924 break;
3925 }
3926 status=MagickFalse;
3927 break;
3928 }
3929 case 'v':
3930 case 'V':
3931 {
3932 if (LocaleCompare("viewbox",keyword) == 0)
3933 {
3934 (void) GetNextToken(q,&q,extent,token);
3935 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3936 GetDrawValue(token,&next_token)-0.5));
3937 if (token == next_token)
3938 ThrowPointExpectedException(image,token);
3939 (void) GetNextToken(q,&q,extent,token);
3940 if (*token == ',')
3941 (void) GetNextToken(q,&q,extent,token);
3942 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3943 GetDrawValue(token,&next_token)-0.5));
3944 if (token == next_token)
3945 ThrowPointExpectedException(image,token);
3946 (void) GetNextToken(q,&q,extent,token);
3947 if (*token == ',')
3948 (void) GetNextToken(q,&q,extent,token);
3949 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3950 GetDrawValue(token,&next_token)+0.5);
3951 if (token == next_token)
3952 ThrowPointExpectedException(image,token);
3953 (void) GetNextToken(q,&q,extent,token);
3954 if (*token == ',')
3955 (void) GetNextToken(q,&q,extent,token);
3956 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3957 GetDrawValue(token,&next_token)+0.5);
3958 if (token == next_token)
3959 ThrowPointExpectedException(image,token);
3960 break;
3961 }
3962 status=MagickFalse;
3963 break;
3964 }
3965 case 'w':
3966 case 'W':
3967 {
3968 if (LocaleCompare("word-spacing",keyword) == 0)
3969 {
3970 (void) GetNextToken(q,&q,extent,token);
3971 graphic_context[n]->interword_spacing=GetDrawValue(token,
3972 &next_token);
3973 if (token == next_token)
3974 ThrowPointExpectedException(image,token);
3975 break;
3976 }
3977 status=MagickFalse;
3978 break;
3979 }
3980 default:
3981 {
3982 status=MagickFalse;
3983 break;
3984 }
3985 }
3986 if (status == MagickFalse)
3987 break;
3988 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3989 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3990 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3991 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3992 {
3993 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3994 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3995 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3996 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3997 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3998 current.tx;
3999 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
4000 current.ty;
4001 }
4002 if (primitive_type == UndefinedPrimitive)
4003 {
4004 if ((draw_info->debug != MagickFalse) && (q > p))
4005 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4006 (q-p-1),p);
4007 continue;
4008 }
4009 /*
4010 Parse the primitive attributes.
4011 */
4012 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4013 if (primitive_info[i].text != (char *) NULL)
4014 primitive_info[i].text=DestroyString(primitive_info[i].text);
4015 i=0;
4016 mvg_info.offset=i;
4017 j=0;
4018 primitive_info[0].point.x=0.0;
4019 primitive_info[0].point.y=0.0;
4020 primitive_info[0].coordinates=0;
4021 primitive_info[0].method=FloodfillMethod;
4022 primitive_info[0].closed_subpath=MagickFalse;
4023 for (x=0; *q != '\0'; x++)
4024 {
4025 /*
4026 Define points.
4027 */
4028 if (IsPoint(q) == MagickFalse)
4029 break;
4030 (void) GetNextToken(q,&q,extent,token);
4031 point.x=GetDrawValue(token,&next_token);
4032 if (token == next_token)
4033 ThrowPointExpectedException(image,token);
4034 (void) GetNextToken(q,&q,extent,token);
4035 if (*token == ',')
4036 (void) GetNextToken(q,&q,extent,token);
4037 point.y=GetDrawValue(token,&next_token);
4038 if (token == next_token)
4039 ThrowPointExpectedException(image,token);
4040 (void) GetNextToken(q,(const char **) NULL,extent,token);
4041 if (*token == ',')
4042 (void) GetNextToken(q,&q,extent,token);
4043 primitive_info[i].primitive=primitive_type;
4044 primitive_info[i].point=point;
4045 primitive_info[i].coordinates=0;
4046 primitive_info[i].method=FloodfillMethod;
4047 primitive_info[i].closed_subpath=MagickFalse;
4048 i++;
4049 mvg_info.offset=i;
4050 if (i < (ssize_t) number_points)
4051 continue;
4052 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4053 primitive_info=(*mvg_info.primitive_info);
4054 }
4055 if (status == MagickFalse)
4056 break;
4057 if (primitive_info[j].text != (char *) NULL)
4058 primitive_info[j].text=DestroyString(primitive_info[j].text);
4059 primitive_info[j].primitive=primitive_type;
4060 primitive_info[j].coordinates=(size_t) x;
4061 primitive_info[j].method=FloodfillMethod;
4062 primitive_info[j].closed_subpath=MagickFalse;
4063 /*
4064 Circumscribe primitive within a circle.
4065 */
4066 bounds.x1=primitive_info[j].point.x;
4067 bounds.y1=primitive_info[j].point.y;
4068 bounds.x2=primitive_info[j].point.x;
4069 bounds.y2=primitive_info[j].point.y;
4070 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4071 {
4072 point=primitive_info[j+k].point;
4073 if (point.x < bounds.x1)
4074 bounds.x1=point.x;
4075 if (point.y < bounds.y1)
4076 bounds.y1=point.y;
4077 if (point.x > bounds.x2)
4078 bounds.x2=point.x;
4079 if (point.y > bounds.y2)
4080 bounds.y2=point.y;
4081 }
4082 /*
4083 Speculate how many points our primitive might consume.
4084 */
4085 coordinates=(double) primitive_info[j].coordinates;
4086 switch (primitive_type)
4087 {
4088 case RectanglePrimitive:
4089 {
4090 coordinates*=5.0;
4091 break;
4092 }
4093 case RoundRectanglePrimitive:
4094 {
4095 double
4096 alpha,
4097 beta,
4098 radius;
4099
4100 alpha=bounds.x2-bounds.x1;
4101 beta=bounds.y2-bounds.y1;
4102 radius=hypot(alpha,beta);
4103 coordinates*=5.0;
4104 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4105 BezierQuantum+360.0;
4106 break;
4107 }
4108 case BezierPrimitive:
4109 {
4110 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4111 break;
4112 }
4113 case PathPrimitive:
4114 {
4115 char
4116 *s,
4117 *t;
4118
4119 (void) GetNextToken(q,&q,extent,token);
4120 coordinates=1.0;
4121 t=token;
4122 for (s=token; *s != '\0'; s=t)
4123 {
4124 double
4125 value;
4126
4127 value=GetDrawValue(s,&t);
4128 (void) value;
4129 if (s == t)
4130 {
4131 t++;
4132 continue;
4133 }
4134 coordinates++;
4135 }
4136 for (s=token; *s != '\0'; s++)
4137 if (strspn(s,"AaCcQqSsTt") != 0)
4138 coordinates+=(20.0*BezierQuantum)+360.0;
4139 break;
4140 }
4141 default:
4142 break;
4143 }
4144 if (status == MagickFalse)
4145 break;
4146 if (((size_t) (i+coordinates)) >= number_points)
4147 {
4148 /*
4149 Resize based on speculative points required by primitive.
4150 */
4151 number_points+=coordinates+1;
4152 if (number_points < (size_t) coordinates)
4153 {
4154 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4155 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4156 image->filename);
4157 status=MagickFalse;
4158 break;
4159 }
4160 mvg_info.offset=i;
4161 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4162 primitive_info=(*mvg_info.primitive_info);
4163 }
4164 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4165 primitive_info=(*mvg_info.primitive_info);
4166 if (status == MagickFalse)
4167 break;
4168 mvg_info.offset=j;
4169 switch (primitive_type)
4170 {
4171 case PointPrimitive:
4172 default:
4173 {
4174 if (primitive_info[j].coordinates != 1)
4175 {
4176 status=MagickFalse;
4177 break;
4178 }
4179 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4180 primitive_info=(*mvg_info.primitive_info);
4181 i=(ssize_t) (j+primitive_info[j].coordinates);
4182 break;
4183 }
4184 case LinePrimitive:
4185 {
4186 if (primitive_info[j].coordinates != 2)
4187 {
4188 status=MagickFalse;
4189 break;
4190 }
4191 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4192 primitive_info[j+1].point);
4193 primitive_info=(*mvg_info.primitive_info);
4194 i=(ssize_t) (j+primitive_info[j].coordinates);
4195 break;
4196 }
4197 case RectanglePrimitive:
4198 {
4199 if (primitive_info[j].coordinates != 2)
4200 {
4201 status=MagickFalse;
4202 break;
4203 }
4204 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4205 primitive_info[j+1].point);
4206 primitive_info=(*mvg_info.primitive_info);
4207 i=(ssize_t) (j+primitive_info[j].coordinates);
4208 break;
4209 }
4210 case RoundRectanglePrimitive:
4211 {
4212 if (primitive_info[j].coordinates != 3)
4213 {
4214 status=MagickFalse;
4215 break;
4216 }
4217 if ((primitive_info[j+2].point.x < 0.0) ||
4218 (primitive_info[j+2].point.y < 0.0))
4219 {
4220 status=MagickFalse;
4221 break;
4222 }
4223 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4224 {
4225 status=MagickFalse;
4226 break;
4227 }
4228 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4229 {
4230 status=MagickFalse;
4231 break;
4232 }
4233 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4234 primitive_info[j+1].point,primitive_info[j+2].point);
4235 primitive_info=(*mvg_info.primitive_info);
4236 i=(ssize_t) (j+primitive_info[j].coordinates);
4237 break;
4238 }
4239 case ArcPrimitive:
4240 {
4241 if (primitive_info[j].coordinates != 3)
4242 {
4243 status=MagickFalse;
4244 break;
4245 }
4246 status&=TraceArc(&mvg_info,primitive_info[j].point,
4247 primitive_info[j+1].point,primitive_info[j+2].point);
4248 primitive_info=(*mvg_info.primitive_info);
4249 i=(ssize_t) (j+primitive_info[j].coordinates);
4250 break;
4251 }
4252 case EllipsePrimitive:
4253 {
4254 if (primitive_info[j].coordinates != 3)
4255 {
4256 status=MagickFalse;
4257 break;
4258 }
4259 if ((primitive_info[j+1].point.x < 0.0) ||
4260 (primitive_info[j+1].point.y < 0.0))
4261 {
4262 status=MagickFalse;
4263 break;
4264 }
4265 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4266 primitive_info[j+1].point,primitive_info[j+2].point);
4267 primitive_info=(*mvg_info.primitive_info);
4268 i=(ssize_t) (j+primitive_info[j].coordinates);
4269 break;
4270 }
4271 case CirclePrimitive:
4272 {
4273 if (primitive_info[j].coordinates != 2)
4274 {
4275 status=MagickFalse;
4276 break;
4277 }
4278 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4279 primitive_info[j+1].point);
4280 primitive_info=(*mvg_info.primitive_info);
4281 i=(ssize_t) (j+primitive_info[j].coordinates);
4282 break;
4283 }
4284 case PolylinePrimitive:
4285 {
4286 if (primitive_info[j].coordinates < 1)
4287 {
4288 status=MagickFalse;
4289 break;
4290 }
4291 break;
4292 }
4293 case PolygonPrimitive:
4294 {
4295 if (primitive_info[j].coordinates < 3)
4296 {
4297 status=MagickFalse;
4298 break;
4299 }
4300 primitive_info[i]=primitive_info[j];
4301 primitive_info[i].coordinates=0;
4302 primitive_info[j].coordinates++;
4303 primitive_info[j].closed_subpath=MagickTrue;
4304 i++;
4305 break;
4306 }
4307 case BezierPrimitive:
4308 {
4309 if (primitive_info[j].coordinates < 3)
4310 {
4311 status=MagickFalse;
4312 break;
4313 }
4314 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4315 primitive_info=(*mvg_info.primitive_info);
4316 i=(ssize_t) (j+primitive_info[j].coordinates);
4317 break;
4318 }
4319 case PathPrimitive:
4320 {
4321 coordinates=(double) TracePath(image,&mvg_info,token);
4322 primitive_info=(*mvg_info.primitive_info);
4323 if (coordinates < 0.0)
4324 {
4325 status=MagickFalse;
4326 break;
4327 }
4328 i=(ssize_t) (j+coordinates);
4329 break;
4330 }
4331 case ColorPrimitive:
4332 case MattePrimitive:
4333 {
4334 ssize_t
4335 method;
4336
4337 if (primitive_info[j].coordinates != 1)
4338 {
4339 status=MagickFalse;
4340 break;
4341 }
4342 (void) GetNextToken(q,&q,extent,token);
4343 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4344 if (method == -1)
4345 {
4346 status=MagickFalse;
4347 break;
4348 }
4349 primitive_info[j].method=(PaintMethod) method;
4350 break;
4351 }
4352 case TextPrimitive:
4353 {
4354 char
4355 geometry[MagickPathExtent];
4356
4357 if (primitive_info[j].coordinates != 1)
4358 {
4359 status=MagickFalse;
4360 break;
4361 }
4362 if (*token != ',')
4363 (void) GetNextToken(q,&q,extent,token);
4364 (void) CloneString(&primitive_info[j].text,token);
4365 /*
4366 Compute text cursor offset.
4367 */
4368 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4369 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4370 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4371 {
4372 mvg_info.point=primitive_info->point;
4373 primitive_info->point.x+=cursor;
4374 }
4375 else
4376 {
4377 mvg_info.point=primitive_info->point;
4378 cursor=0.0;
4379 }
4380 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4381 primitive_info->point.x,primitive_info->point.y);
4382 clone_info->render=MagickFalse;
4383 clone_info->text=AcquireString(token);
4384 status&=GetTypeMetrics(image,clone_info,&metrics);
4385 clone_info=DestroyDrawInfo(clone_info);
4386 cursor+=metrics.width;
4387 if (graphic_context[n]->compliance != SVGCompliance)
4388 cursor=0.0;
4389 break;
4390 }
4391 case ImagePrimitive:
4392 {
4393 if (primitive_info[j].coordinates != 2)
4394 {
4395 status=MagickFalse;
4396 break;
4397 }
4398 (void) GetNextToken(q,&q,extent,token);
4399 (void) CloneString(&primitive_info[j].text,token);
4400 break;
4401 }
4402 }
4403 mvg_info.offset=i;
4404 if (status == 0)
4405 break;
4406 primitive_info[i].primitive=UndefinedPrimitive;
4407 if ((draw_info->debug != MagickFalse) && (q > p))
4408 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4409 /*
4410 Sanity check.
4411 */
4412 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4413 &graphic_context[n]->affine));
4414 primitive_info=(*mvg_info.primitive_info);
4415 if (status == 0)
4416 break;
4417 status&=CheckPrimitiveExtent(&mvg_info,(double)
4418 graphic_context[n]->stroke_width);
4419 primitive_info=(*mvg_info.primitive_info);
4420 if (status == 0)
4421 break;
4422 if (i == 0)
4423 continue;
4424 /*
4425 Transform points.
4426 */
4427 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4428 {
4429 point=primitive_info[i].point;
4430 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4431 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4432 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4433 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4434 point=primitive_info[i].point;
4435 if (point.x < graphic_context[n]->bounds.x1)
4436 graphic_context[n]->bounds.x1=point.x;
4437 if (point.y < graphic_context[n]->bounds.y1)
4438 graphic_context[n]->bounds.y1=point.y;
4439 if (point.x > graphic_context[n]->bounds.x2)
4440 graphic_context[n]->bounds.x2=point.x;
4441 if (point.y > graphic_context[n]->bounds.y2)
4442 graphic_context[n]->bounds.y2=point.y;
4443 if (primitive_info[i].primitive == ImagePrimitive)
4444 break;
4445 if (i >= (ssize_t) number_points)
4446 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4447 }
4448 if (graphic_context[n]->render != MagickFalse)
4449 {
4450 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4451 (graphic_context[n]->clip_mask != (char *) NULL) &&
4452 (LocaleCompare(graphic_context[n]->clip_mask,
4453 graphic_context[n-1]->clip_mask) != 0))
4454 {
4455 const char
4456 *clip_path;
4457
4458 clip_path=(const char *) GetValueFromSplayTree(macros,
4459 graphic_context[n]->clip_mask);
4460 if (clip_path != (const char *) NULL)
4461 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4462 clip_path);
4463 status&=DrawClipPath(image,graphic_context[n],
4464 graphic_context[n]->clip_mask);
4465 }
4466 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4467 }
4468 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4469 primitive_extent);
4470 if (proceed == MagickFalse)
4471 break;
4472 if (status == 0)
4473 break;
4474 }
4475 if (draw_info->debug != MagickFalse)
4476 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4477 /*
4478 Relinquish resources.
4479 */
4480 macros=DestroySplayTree(macros);
4481 token=DestroyString(token);
4482 if (primitive_info != (PrimitiveInfo *) NULL)
4483 {
4484 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4485 if (primitive_info[i].text != (char *) NULL)
4486 primitive_info[i].text=DestroyString(primitive_info[i].text);
4487 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4488 }
4489 primitive=DestroyString(primitive);
4490 for ( ; n >= 0; n--)
4491 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4492 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4493 if (status == MagickFalse)
4494 ThrowBinaryImageException(DrawError,
4495 "NonconformingDrawingPrimitiveDefinition",keyword);
4496 return(status != 0 ? MagickTrue : MagickFalse);
4497}
4498
4499MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4500{
4501 return(RenderMVGContent(image,draw_info,0));
4502}
4503␌
4504/*
4505%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4506% %
4507% %
4508% %
4509% D r a w P a t t e r n P a t h %
4510% %
4511% %
4512% %
4513%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4514%
4515% DrawPatternPath() draws a pattern.
4516%
4517% The format of the DrawPatternPath method is:
4518%
4519% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4520% const char *name,Image **pattern)
4521%
4522% A description of each parameter follows:
4523%
4524% o image: the image.
4525%
4526% o draw_info: the draw info.
4527%
4528% o name: the pattern name.
4529%
4530% o image: the image.
4531%
4532*/
4533MagickExport MagickBooleanType DrawPatternPath(Image *image,
4534 const DrawInfo *draw_info,const char *name,Image **pattern)
4535{
4536 char
4537 property[MaxTextExtent];
4538
4539 const char
4540 *geometry,
4541 *path,
4542 *type;
4543
4544 DrawInfo
4545 *clone_info;
4546
4547 ImageInfo
4548 *image_info;
4549
4550 MagickBooleanType
4551 status;
4552
4553 assert(image != (Image *) NULL);
4554 assert(image->signature == MagickCoreSignature);
4555 assert(draw_info != (const DrawInfo *) NULL);
4556 if (IsEventLogging() != MagickFalse)
4557 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4558 assert(name != (const char *) NULL);
4559 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4560 path=GetImageArtifact(image,property);
4561 if (path == (const char *) NULL)
4562 return(MagickFalse);
4563 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4564 geometry=GetImageArtifact(image,property);
4565 if (geometry == (const char *) NULL)
4566 return(MagickFalse);
4567 if ((*pattern) != (Image *) NULL)
4568 *pattern=DestroyImage(*pattern);
4569 image_info=AcquireImageInfo();
4570 image_info->size=AcquireString(geometry);
4571 *pattern=AcquireImage(image_info);
4572 image_info=DestroyImageInfo(image_info);
4573 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4574 &image->exception);
4575 (void) SetImageBackgroundColor(*pattern);
4576 if (draw_info->debug != MagickFalse)
4577 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4578 "begin pattern-path %s %s",name,geometry);
4579 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4580 if (clone_info->fill_pattern != (Image *) NULL)
4581 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4582 if (clone_info->stroke_pattern != (Image *) NULL)
4583 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4584 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4585 type=GetImageArtifact(image,property);
4586 if (type != (const char *) NULL)
4587 clone_info->gradient.type=(GradientType) ParseCommandOption(
4588 MagickGradientOptions,MagickFalse,type);
4589 (void) CloneString(&clone_info->primitive,path);
4590 status=RenderMVGContent(*pattern,clone_info,0);
4591 clone_info=DestroyDrawInfo(clone_info);
4592 if (draw_info->debug != MagickFalse)
4593 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4594 return(status);
4595}
4596␌
4597/*
4598%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4599% %
4600% %
4601% %
4602+ D r a w P o l y g o n P r i m i t i v e %
4603% %
4604% %
4605% %
4606%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4607%
4608% DrawPolygonPrimitive() draws a polygon on the image.
4609%
4610% The format of the DrawPolygonPrimitive method is:
4611%
4612% MagickBooleanType DrawPolygonPrimitive(Image *image,
4613% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4614%
4615% A description of each parameter follows:
4616%
4617% o image: the image.
4618%
4619% o draw_info: the draw info.
4620%
4621% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4622%
4623*/
4624
4625static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4626{
4627 ssize_t
4628 i;
4629
4630 assert(polygon_info != (PolygonInfo **) NULL);
4631 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4632 if (polygon_info[i] != (PolygonInfo *) NULL)
4633 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4634 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4635 return(polygon_info);
4636}
4637
4638static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4639 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4640{
4641 PathInfo
4642 *magick_restrict path_info;
4643
4644 PolygonInfo
4645 **polygon_info;
4646
4647 size_t
4648 number_threads;
4649
4650 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4651 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4652 sizeof(*polygon_info));
4653 if (polygon_info == (PolygonInfo **) NULL)
4654 {
4655 (void) ThrowMagickException(exception,GetMagickModule(),
4656 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4657 return((PolygonInfo **) NULL);
4658 }
4659 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4660 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4661 if (path_info == (PathInfo *) NULL)
4662 return(DestroyPolygonTLS(polygon_info));
4663 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4664 if (polygon_info[0] == (PolygonInfo *) NULL)
4665 {
4666 (void) ThrowMagickException(exception,GetMagickModule(),
4667 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4668 return(DestroyPolygonTLS(polygon_info));
4669 }
4670 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4671 return(polygon_info);
4672}
4673
4674static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4675 const size_t number_threads,ExceptionInfo *exception)
4676{
4677 ssize_t
4678 i;
4679
4680 for (i=1; i < (ssize_t) number_threads; i++)
4681 {
4682 EdgeInfo
4683 *edge_info;
4684
4685 ssize_t
4686 j;
4687
4688 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4689 sizeof(*polygon_info[i]));
4690 if (polygon_info[i] == (PolygonInfo *) NULL)
4691 {
4692 (void) ThrowMagickException(exception,GetMagickModule(),
4693 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4694 return(MagickFalse);
4695 }
4696 polygon_info[i]->number_edges=0;
4697 edge_info=polygon_info[0]->edges;
4698 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4699 polygon_info[0]->number_edges,sizeof(*edge_info));
4700 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4701 {
4702 (void) ThrowMagickException(exception,GetMagickModule(),
4703 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4704 return(MagickFalse);
4705 }
4706 (void) memcpy(polygon_info[i]->edges,edge_info,
4707 polygon_info[0]->number_edges*sizeof(*edge_info));
4708 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4709 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4710 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4711 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4712 {
4713 edge_info=polygon_info[0]->edges+j;
4714 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4715 edge_info->number_points,sizeof(*edge_info));
4716 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4717 {
4718 (void) ThrowMagickException(exception,GetMagickModule(),
4719 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4720 return(MagickFalse);
4721 }
4722 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4723 edge_info->number_points*sizeof(*edge_info->points));
4724 }
4725 }
4726 return(MagickTrue);
4727}
4728
4729static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4730{
4731 assert(edge < (ssize_t) polygon_info->number_edges);
4732 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4733 polygon_info->edges[edge].points);
4734 polygon_info->number_edges--;
4735 if (edge < (ssize_t) polygon_info->number_edges)
4736 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4737 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4738 return(polygon_info->number_edges);
4739}
4740
4741static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4742 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4743 const ssize_t y,double *stroke_opacity)
4744{
4745 double
4746 alpha,
4747 beta,
4748 distance,
4749 subpath_opacity;
4750
4751 PointInfo
4752 delta;
4753
4754 EdgeInfo
4755 *p;
4756
4757 const PointInfo
4758 *q;
4759
4760 ssize_t
4761 i;
4762
4763 ssize_t
4764 j,
4765 winding_number;
4766
4767 /*
4768 Compute fill & stroke opacity for this (x,y) point.
4769 */
4770 *stroke_opacity=0.0;
4771 subpath_opacity=0.0;
4772 p=polygon_info->edges;
4773 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4774 {
4775 if ((double) y <= (p->bounds.y1-mid-0.5))
4776 break;
4777 if ((double) y > (p->bounds.y2+mid+0.5))
4778 {
4779 p--;
4780 (void) DestroyEdge(polygon_info,j--);
4781 continue;
4782 }
4783 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4784 ((double) x > (p->bounds.x2+mid+0.5)))
4785 continue;
4786 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4787 for ( ; i < (ssize_t) p->number_points; i++)
4788 {
4789 if ((double) y <= (p->points[i-1].y-mid-0.5))
4790 break;
4791 if ((double) y > (p->points[i].y+mid+0.5))
4792 continue;
4793 if (p->scanline != (double) y)
4794 {
4795 p->scanline=(double) y;
4796 p->highwater=(size_t) i;
4797 }
4798 /*
4799 Compute distance between a point and an edge.
4800 */
4801 q=p->points+i-1;
4802 delta.x=(q+1)->x-q->x;
4803 delta.y=(q+1)->y-q->y;
4804 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4805 if (beta <= 0.0)
4806 {
4807 delta.x=(double) x-q->x;
4808 delta.y=(double) y-q->y;
4809 distance=delta.x*delta.x+delta.y*delta.y;
4810 }
4811 else
4812 {
4813 alpha=delta.x*delta.x+delta.y*delta.y;
4814 if (beta >= alpha)
4815 {
4816 delta.x=(double) x-(q+1)->x;
4817 delta.y=(double) y-(q+1)->y;
4818 distance=delta.x*delta.x+delta.y*delta.y;
4819 }
4820 else
4821 {
4822 alpha=MagickSafeReciprocal(alpha);
4823 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4824 distance=alpha*beta*beta;
4825 }
4826 }
4827 /*
4828 Compute stroke & subpath opacity.
4829 */
4830 beta=0.0;
4831 if (p->ghostline == MagickFalse)
4832 {
4833 alpha=mid+0.5;
4834 if ((*stroke_opacity < 1.0) &&
4835 (distance <= ((alpha+0.25)*(alpha+0.25))))
4836 {
4837 alpha=mid-0.5;
4838 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4839 *stroke_opacity=1.0;
4840 else
4841 {
4842 beta=1.0;
4843 if (fabs(distance-1.0) >= MagickEpsilon)
4844 beta=sqrt((double) distance);
4845 alpha=beta-mid-0.5;
4846 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4847 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4848 }
4849 }
4850 }
4851 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4852 continue;
4853 if (distance <= 0.0)
4854 {
4855 subpath_opacity=1.0;
4856 continue;
4857 }
4858 if (distance > 1.0)
4859 continue;
4860 if (fabs(beta) < MagickEpsilon)
4861 {
4862 beta=1.0;
4863 if (fabs(distance-1.0) >= MagickEpsilon)
4864 beta=sqrt(distance);
4865 }
4866 alpha=beta-1.0;
4867 if (subpath_opacity < (alpha*alpha))
4868 subpath_opacity=alpha*alpha;
4869 }
4870 }
4871 /*
4872 Compute fill opacity.
4873 */
4874 if (fill == MagickFalse)
4875 return(0.0);
4876 if (subpath_opacity >= 1.0)
4877 return(1.0);
4878 /*
4879 Determine winding number.
4880 */
4881 winding_number=0;
4882 p=polygon_info->edges;
4883 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4884 {
4885 if ((double) y <= p->bounds.y1)
4886 break;
4887 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4888 continue;
4889 if ((double) x > p->bounds.x2)
4890 {
4891 winding_number+=p->direction != 0 ? 1 : -1;
4892 continue;
4893 }
4894 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4895 for ( ; i < (ssize_t) (p->number_points-1); i++)
4896 if ((double) y <= p->points[i].y)
4897 break;
4898 q=p->points+i-1;
4899 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4900 winding_number+=p->direction != 0 ? 1 : -1;
4901 }
4902 if (fill_rule != NonZeroRule)
4903 {
4904 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4905 return(1.0);
4906 }
4907 else
4908 if (MagickAbsoluteValue(winding_number) != 0)
4909 return(1.0);
4910 return(subpath_opacity);
4911}
4912
4913static MagickBooleanType DrawPolygonPrimitive(Image *image,
4914 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4915{
4916 typedef struct _ExtentInfo
4917 {
4918 ssize_t
4919 x1,
4920 y1,
4921 x2,
4922 y2;
4923 } ExtentInfo;
4924
4925 CacheView
4926 *image_view;
4927
4928 const char
4929 *artifact;
4930
4931 double
4932 mid;
4933
4934 ExceptionInfo
4935 *exception;
4936
4937 ExtentInfo
4938 poly_extent;
4939
4940 MagickBooleanType
4941 fill,
4942 status;
4943
4944 PolygonInfo
4945 **magick_restrict polygon_info;
4946
4947 EdgeInfo
4948 *p;
4949
4950 SegmentInfo
4951 bounds;
4952
4953 size_t
4954 number_threads = 1;
4955
4956 ssize_t
4957 i,
4958 y;
4959
4960 assert(image != (Image *) NULL);
4961 assert(image->signature == MagickCoreSignature);
4962 assert(draw_info != (DrawInfo *) NULL);
4963 assert(draw_info->signature == MagickCoreSignature);
4964 assert(primitive_info != (PrimitiveInfo *) NULL);
4965 if (IsEventLogging() != MagickFalse)
4966 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4967 if (primitive_info->coordinates <= 1)
4968 return(MagickTrue);
4969 /*
4970 Compute bounding box.
4971 */
4972 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4973 if (polygon_info == (PolygonInfo **) NULL)
4974 return(MagickFalse);
4975 if (draw_info->debug != MagickFalse)
4976 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4977 fill=(primitive_info->method == FillToBorderMethod) ||
4978 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4979 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4980 bounds=polygon_info[0]->edges[0].bounds;
4981 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4982 if (IsStringTrue(artifact) != MagickFalse)
4983 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4984 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4985 {
4986 p=polygon_info[0]->edges+i;
4987 if (p->bounds.x1 < bounds.x1)
4988 bounds.x1=p->bounds.x1;
4989 if (p->bounds.y1 < bounds.y1)
4990 bounds.y1=p->bounds.y1;
4991 if (p->bounds.x2 > bounds.x2)
4992 bounds.x2=p->bounds.x2;
4993 if (p->bounds.y2 > bounds.y2)
4994 bounds.y2=p->bounds.y2;
4995 }
4996 bounds.x1-=(mid+1.0);
4997 bounds.y1-=(mid+1.0);
4998 bounds.x2+=(mid+1.0);
4999 bounds.y2+=(mid+1.0);
5000 if ((bounds.x1 >= (double) image->columns) ||
5001 (bounds.y1 >= (double) image->rows) ||
5002 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5003 {
5004 polygon_info=DestroyPolygonTLS(polygon_info);
5005 return(MagickTrue); /* virtual polygon */
5006 }
5007 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5008 (double) image->columns-1.0 : bounds.x1;
5009 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5010 (double) image->rows-1.0 : bounds.y1;
5011 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5012 (double) image->columns-1.0 : bounds.x2;
5013 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5014 (double) image->rows-1.0 : bounds.y2;
5015 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
5016 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5017 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
5018 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5019 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
5020 poly_extent.y1+1,1);
5021 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
5022 if (status == MagickFalse)
5023 {
5024 polygon_info=DestroyPolygonTLS(polygon_info);
5025 return(status);
5026 }
5027 status=MagickTrue;
5028 exception=(&image->exception);
5029 image_view=AcquireAuthenticCacheView(image,exception);
5030 if ((primitive_info->coordinates == 1) ||
5031 (polygon_info[0]->number_edges == 0))
5032 {
5033 /*
5034 Draw point.
5035 */
5036#if defined(MAGICKCORE_OPENMP_SUPPORT)
5037 #pragma omp parallel for schedule(static) shared(status) \
5038 num_threads(number_threads)
5039#endif
5040 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5041 {
5042 MagickBooleanType
5043 sync;
5044
5045 PixelPacket
5046 *magick_restrict q;
5047
5048 ssize_t
5049 x;
5050
5051 if (status == MagickFalse)
5052 continue;
5053 x=poly_extent.x1;
5054 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5055 x+1),1,exception);
5056 if (q == (PixelPacket *) NULL)
5057 {
5058 status=MagickFalse;
5059 continue;
5060 }
5061 for ( ; x <= poly_extent.x2; x++)
5062 {
5063 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5064 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5065 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5066 q++;
5067 }
5068 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5069 if (sync == MagickFalse)
5070 status=MagickFalse;
5071 }
5072 image_view=DestroyCacheView(image_view);
5073 polygon_info=DestroyPolygonTLS(polygon_info);
5074 if (draw_info->debug != MagickFalse)
5075 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5076 " end draw-polygon");
5077 return(status);
5078 }
5079 /*
5080 Draw polygon or line.
5081 */
5082 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5083 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5084#if defined(MAGICKCORE_OPENMP_SUPPORT)
5085 #pragma omp parallel for schedule(static) shared(status) \
5086 num_threads(number_threads)
5087#endif
5088 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5089 {
5090 const int
5091 id = GetOpenMPThreadId();
5092
5093 PixelPacket
5094 fill_color,
5095 stroke_color;
5096
5097 PixelPacket
5098 *magick_restrict q;
5099
5100 ssize_t
5101 x;
5102
5103 if (status == MagickFalse)
5104 continue;
5105 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5106 (poly_extent.x2-poly_extent.x1+1),1,exception);
5107 if (q == (PixelPacket *) NULL)
5108 {
5109 status=MagickFalse;
5110 continue;
5111 }
5112 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5113 {
5114 double
5115 fill_opacity,
5116 stroke_opacity;
5117
5118 /*
5119 Fill and/or stroke.
5120 */
5121 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5122 draw_info->fill_rule,x,y,&stroke_opacity);
5123 if (draw_info->stroke_antialias == MagickFalse)
5124 {
5125 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5126 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5127 }
5128 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5129 &fill_color);
5130 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5131 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5132 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5133 (MagickRealType) q->opacity,q);
5134 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5135 &stroke_color);
5136 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5137 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5138 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5139 (MagickRealType) q->opacity,q);
5140 q++;
5141 }
5142 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5143 status=MagickFalse;
5144 }
5145 image_view=DestroyCacheView(image_view);
5146 polygon_info=DestroyPolygonTLS(polygon_info);
5147 if (draw_info->debug != MagickFalse)
5148 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5149 return(status);
5150}
5151␌
5152/*
5153%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5154% %
5155% %
5156% %
5157% D r a w P r i m i t i v e %
5158% %
5159% %
5160% %
5161%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5162%
5163% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5164%
5165% The format of the DrawPrimitive method is:
5166%
5167% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5168% PrimitiveInfo *primitive_info)
5169%
5170% A description of each parameter follows:
5171%
5172% o image: the image.
5173%
5174% o draw_info: the draw info.
5175%
5176% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5177%
5178*/
5179static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5180{
5181 const char
5182 *methods[] =
5183 {
5184 "point",
5185 "replace",
5186 "floodfill",
5187 "filltoborder",
5188 "reset",
5189 "?"
5190 };
5191
5192 PointInfo
5193 p,
5194 q,
5195 point;
5196
5197 ssize_t
5198 i,
5199 x;
5200
5201 ssize_t
5202 coordinates,
5203 y;
5204
5205 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5206 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5207 switch (primitive_info->primitive)
5208 {
5209 case PointPrimitive:
5210 {
5211 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5212 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5213 methods[primitive_info->method]);
5214 return;
5215 }
5216 case ColorPrimitive:
5217 {
5218 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5219 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5220 methods[primitive_info->method]);
5221 return;
5222 }
5223 case MattePrimitive:
5224 {
5225 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5226 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5227 methods[primitive_info->method]);
5228 return;
5229 }
5230 case TextPrimitive:
5231 {
5232 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5233 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5234 return;
5235 }
5236 case ImagePrimitive:
5237 {
5238 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5239 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5240 return;
5241 }
5242 default:
5243 break;
5244 }
5245 coordinates=0;
5246 p=primitive_info[0].point;
5247 q.x=(-1.0);
5248 q.y=(-1.0);
5249 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5250 {
5251 point=primitive_info[i].point;
5252 if (coordinates <= 0)
5253 {
5254 coordinates=(ssize_t) primitive_info[i].coordinates;
5255 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5256 " begin open (%.20g)",(double) coordinates);
5257 p=point;
5258 }
5259 point=primitive_info[i].point;
5260 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5261 (fabs(q.y-point.y) >= MagickEpsilon))
5262 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5263 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5264 else
5265 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5266 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5267 q=point;
5268 coordinates--;
5269 if (coordinates > 0)
5270 continue;
5271 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5272 (fabs(p.y-point.y) >= MagickEpsilon))
5273 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5274 (double) coordinates);
5275 else
5276 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5277 (double) coordinates);
5278 }
5279}
5280
5281MagickExport MagickBooleanType DrawPrimitive(Image *image,
5282 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5283{
5284 CacheView
5285 *image_view;
5286
5287 ExceptionInfo
5288 *exception;
5289
5290 MagickStatusType
5291 status;
5292
5293 ssize_t
5294 i,
5295 x;
5296
5297 ssize_t
5298 y;
5299
5300 if (draw_info->debug != MagickFalse)
5301 {
5302 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5303 " begin draw-primitive");
5304 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5305 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5306 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5307 draw_info->affine.tx,draw_info->affine.ty);
5308 }
5309 exception=(&image->exception);
5310 status=MagickTrue;
5311 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5312 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5313 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5314 status=SetImageColorspace(image,sRGBColorspace);
5315 if (draw_info->compliance == SVGCompliance)
5316 {
5317 status&=SetImageClipMask(image,draw_info->clipping_mask);
5318 status&=SetImageMask(image,draw_info->composite_mask);
5319 }
5320 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5321 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5322 image_view=AcquireAuthenticCacheView(image,exception);
5323 switch (primitive_info->primitive)
5324 {
5325 case ColorPrimitive:
5326 {
5327 switch (primitive_info->method)
5328 {
5329 case PointMethod:
5330 default:
5331 {
5332 PixelPacket
5333 *q;
5334
5335 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5336 if (q == (PixelPacket *) NULL)
5337 break;
5338 (void) GetFillColor(draw_info,x,y,q);
5339 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5340 break;
5341 }
5342 case ReplaceMethod:
5343 {
5344 PixelPacket
5345 target;
5346
5347 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5348 for (y=0; y < (ssize_t) image->rows; y++)
5349 {
5350 PixelPacket
5351 *magick_restrict q;
5352
5353 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5354 exception);
5355 if (q == (PixelPacket *) NULL)
5356 break;
5357 for (x=0; x < (ssize_t) image->columns; x++)
5358 {
5359 if (IsColorSimilar(image,q,&target) == MagickFalse)
5360 {
5361 q++;
5362 continue;
5363 }
5364 (void) GetFillColor(draw_info,x,y,q);
5365 q++;
5366 }
5367 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5368 if (status == MagickFalse)
5369 break;
5370 }
5371 break;
5372 }
5373 case FloodfillMethod:
5374 case FillToBorderMethod:
5375 {
5376 MagickPixelPacket
5377 target;
5378
5379 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5380 if (primitive_info->method == FillToBorderMethod)
5381 {
5382 target.red=(MagickRealType) draw_info->border_color.red;
5383 target.green=(MagickRealType) draw_info->border_color.green;
5384 target.blue=(MagickRealType) draw_info->border_color.blue;
5385 }
5386 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5387 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5388 MagickTrue);
5389 break;
5390 }
5391 case ResetMethod:
5392 {
5393 for (y=0; y < (ssize_t) image->rows; y++)
5394 {
5395 PixelPacket
5396 *magick_restrict q;
5397
5398 ssize_t
5399 x;
5400
5401 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5402 exception);
5403 if (q == (PixelPacket *) NULL)
5404 break;
5405 for (x=0; x < (ssize_t) image->columns; x++)
5406 {
5407 (void) GetFillColor(draw_info,x,y,q);
5408 q++;
5409 }
5410 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5411 if (status == MagickFalse)
5412 break;
5413 }
5414 break;
5415 }
5416 }
5417 break;
5418 }
5419 case MattePrimitive:
5420 {
5421 if (image->matte == MagickFalse)
5422 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5423 switch (primitive_info->method)
5424 {
5425 case PointMethod:
5426 default:
5427 {
5428 PixelPacket
5429 pixel;
5430
5431 PixelPacket
5432 *q;
5433
5434 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5435 if (q == (PixelPacket *) NULL)
5436 break;
5437 (void) GetFillColor(draw_info,x,y,&pixel);
5438 SetPixelOpacity(q,pixel.opacity);
5439 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5440 break;
5441 }
5442 case ReplaceMethod:
5443 {
5444 PixelPacket
5445 pixel,
5446 target;
5447
5448 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5449 for (y=0; y < (ssize_t) image->rows; y++)
5450 {
5451 PixelPacket
5452 *magick_restrict q;
5453
5454 ssize_t
5455 x;
5456
5457 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5458 exception);
5459 if (q == (PixelPacket *) NULL)
5460 break;
5461 for (x=0; x < (ssize_t) image->columns; x++)
5462 {
5463 if (IsColorSimilar(image,q,&target) == MagickFalse)
5464 {
5465 q++;
5466 continue;
5467 }
5468 (void) GetFillColor(draw_info,x,y,&pixel);
5469 SetPixelOpacity(q,pixel.opacity);
5470 q++;
5471 }
5472 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5473 if (status == MagickFalse)
5474 break;
5475 }
5476 break;
5477 }
5478 case FloodfillMethod:
5479 case FillToBorderMethod:
5480 {
5481 MagickPixelPacket
5482 target;
5483
5484 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5485 if (primitive_info->method == FillToBorderMethod)
5486 {
5487 target.red=(MagickRealType) draw_info->border_color.red;
5488 target.green=(MagickRealType) draw_info->border_color.green;
5489 target.blue=(MagickRealType) draw_info->border_color.blue;
5490 }
5491 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5492 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5493 MagickTrue);
5494 break;
5495 }
5496 case ResetMethod:
5497 {
5498 PixelPacket
5499 pixel;
5500
5501 for (y=0; y < (ssize_t) image->rows; y++)
5502 {
5503 PixelPacket
5504 *magick_restrict q;
5505
5506 ssize_t
5507 x;
5508
5509 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5510 exception);
5511 if (q == (PixelPacket *) NULL)
5512 break;
5513 for (x=0; x < (ssize_t) image->columns; x++)
5514 {
5515 (void) GetFillColor(draw_info,x,y,&pixel);
5516 SetPixelOpacity(q,pixel.opacity);
5517 q++;
5518 }
5519 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5520 if (status == MagickFalse)
5521 break;
5522 }
5523 break;
5524 }
5525 }
5526 break;
5527 }
5528 case ImagePrimitive:
5529 {
5530 AffineMatrix
5531 affine;
5532
5533 char
5534 composite_geometry[MaxTextExtent];
5535
5536 Image
5537 *composite_image,
5538 *composite_images;
5539
5540 ImageInfo
5541 *clone_info;
5542
5543 RectangleInfo
5544 geometry;
5545
5546 ssize_t
5547 x1,
5548 y1;
5549
5550 if (primitive_info->text == (char *) NULL)
5551 break;
5552 clone_info=AcquireImageInfo();
5553 composite_images=(Image *) NULL;
5554 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5555 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5556 &image->exception);
5557 else
5558 if (*primitive_info->text != '\0')
5559 {
5560 /*
5561 Read composite image.
5562 */
5563 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5564 MagickPathExtent);
5565 (void) SetImageInfo(clone_info,1,exception);
5566 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5567 MagickPathExtent);
5568 if (clone_info->size != (char *) NULL)
5569 clone_info->size=DestroyString(clone_info->size);
5570 if (clone_info->extract != (char *) NULL)
5571 clone_info->extract=DestroyString(clone_info->extract);
5572 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5573 (LocaleCompare(clone_info->magick,"http") != 0) &&
5574 (LocaleCompare(clone_info->magick,"https") != 0) &&
5575 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5576 (LocaleCompare(clone_info->magick,"vid") != 0))
5577 composite_images=ReadImage(clone_info,exception);
5578 else
5579 (void) ThrowMagickException(exception,GetMagickModule(),
5580 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5581 }
5582 clone_info=DestroyImageInfo(clone_info);
5583 if (composite_images == (Image *) NULL)
5584 {
5585 status=0;
5586 break;
5587 }
5588 composite_image=RemoveFirstImageFromList(&composite_images);
5589 composite_images=DestroyImageList(composite_images);
5590 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5591 NULL,(void *) NULL);
5592 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5593 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5594 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5595 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5596 {
5597 char
5598 geometry[MaxTextExtent];
5599
5600 /*
5601 Resize image.
5602 */
5603 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5604 primitive_info[1].point.x,primitive_info[1].point.y);
5605 composite_image->filter=image->filter;
5606 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5607 }
5608 if (composite_image->matte == MagickFalse)
5609 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5610 if (draw_info->opacity != OpaqueOpacity)
5611 status&=SetImageOpacity(composite_image,draw_info->opacity);
5612 SetGeometry(image,&geometry);
5613 image->gravity=draw_info->gravity;
5614 geometry.x=x;
5615 geometry.y=y;
5616 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5617 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5618 composite_image->rows,(double) geometry.x,(double) geometry.y);
5619 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5620 &image->exception);
5621 affine=draw_info->affine;
5622 affine.tx=(double) geometry.x;
5623 affine.ty=(double) geometry.y;
5624 composite_image->interpolate=image->interpolate;
5625 if ((draw_info->compose == OverCompositeOp) ||
5626 (draw_info->compose == SrcOverCompositeOp))
5627 status&=DrawAffineImage(image,composite_image,&affine);
5628 else
5629 status&=CompositeImage(image,draw_info->compose,composite_image,
5630 geometry.x,geometry.y);
5631 composite_image=DestroyImage(composite_image);
5632 break;
5633 }
5634 case PointPrimitive:
5635 {
5636 PixelPacket
5637 fill_color;
5638
5639 PixelPacket
5640 *q;
5641
5642 if ((y < 0) || (y >= (ssize_t) image->rows))
5643 break;
5644 if ((x < 0) || (x >= (ssize_t) image->columns))
5645 break;
5646 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5647 if (q == (PixelPacket *) NULL)
5648 break;
5649 (void) GetFillColor(draw_info,x,y,&fill_color);
5650 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5651 (MagickRealType) q->opacity,q);
5652 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5653 break;
5654 }
5655 case TextPrimitive:
5656 {
5657 char
5658 geometry[MaxTextExtent];
5659
5660 DrawInfo
5661 *clone_info;
5662
5663 if (primitive_info->text == (char *) NULL)
5664 break;
5665 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5666 (void) CloneString(&clone_info->text,primitive_info->text);
5667 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5668 primitive_info->point.x,primitive_info->point.y);
5669 (void) CloneString(&clone_info->geometry,geometry);
5670 status&=AnnotateImage(image,clone_info);
5671 clone_info=DestroyDrawInfo(clone_info);
5672 break;
5673 }
5674 default:
5675 {
5676 double
5677 mid,
5678 scale;
5679
5680 DrawInfo
5681 *clone_info;
5682
5683 if (IsEventLogging() != MagickFalse)
5684 LogPrimitiveInfo(primitive_info);
5685 scale=ExpandAffine(&draw_info->affine);
5686 if ((draw_info->dash_pattern != (double *) NULL) &&
5687 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5688 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5689 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5690 {
5691 /*
5692 Draw dash polygon.
5693 */
5694 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5695 clone_info->stroke_width=0.0;
5696 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5697 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5698 clone_info=DestroyDrawInfo(clone_info);
5699 if (status != MagickFalse)
5700 status&=DrawDashPolygon(draw_info,primitive_info,image);
5701 break;
5702 }
5703 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5704 if ((mid > 1.0) &&
5705 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5706 (draw_info->stroke_pattern != (Image *) NULL)))
5707 {
5708 double
5709 x,
5710 y;
5711
5712 MagickBooleanType
5713 closed_path;
5714
5715 /*
5716 Draw strokes while respecting line cap/join attributes.
5717 */
5718 closed_path=primitive_info[0].closed_subpath;
5719 i=(ssize_t) primitive_info[0].coordinates;
5720 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5721 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5722 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5723 closed_path=MagickTrue;
5724 if ((((draw_info->linecap == RoundCap) ||
5725 (closed_path != MagickFalse)) &&
5726 (draw_info->linejoin == RoundJoin)) ||
5727 (primitive_info[i].primitive != UndefinedPrimitive))
5728 {
5729 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5730 break;
5731 }
5732 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5733 clone_info->stroke_width=0.0;
5734 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5735 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5736 clone_info=DestroyDrawInfo(clone_info);
5737 if (status != MagickFalse)
5738 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5739 break;
5740 }
5741 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5742 break;
5743 }
5744 }
5745 image_view=DestroyCacheView(image_view);
5746 if (draw_info->compliance == SVGCompliance)
5747 {
5748 status&=SetImageClipMask(image,(Image *) NULL);
5749 status&=SetImageMask(image,(Image *) NULL);
5750 }
5751 if (draw_info->debug != MagickFalse)
5752 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5753 return(status != 0 ? MagickTrue : MagickFalse);
5754}
5755␌
5756/*
5757%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5758% %
5759% %
5760% %
5761+ D r a w S t r o k e P o l y g o n %
5762% %
5763% %
5764% %
5765%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5766%
5767% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5768% the image while respecting the line cap and join attributes.
5769%
5770% The format of the DrawStrokePolygon method is:
5771%
5772% MagickBooleanType DrawStrokePolygon(Image *image,
5773% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5774%
5775% A description of each parameter follows:
5776%
5777% o image: the image.
5778%
5779% o draw_info: the draw info.
5780%
5781% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5782%
5783%
5784*/
5785
5786static MagickBooleanType DrawRoundLinecap(Image *image,
5787 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5788{
5789 PrimitiveInfo
5790 linecap[5];
5791
5792 ssize_t
5793 i;
5794
5795 for (i=0; i < 4; i++)
5796 linecap[i]=(*primitive_info);
5797 linecap[0].coordinates=4;
5798 linecap[1].point.x+=2.0*MagickEpsilon;
5799 linecap[2].point.x+=2.0*MagickEpsilon;
5800 linecap[2].point.y+=2.0*MagickEpsilon;
5801 linecap[3].point.y+=2.0*MagickEpsilon;
5802 linecap[4].primitive=UndefinedPrimitive;
5803 return(DrawPolygonPrimitive(image,draw_info,linecap));
5804}
5805
5806static MagickBooleanType DrawStrokePolygon(Image *image,
5807 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5808{
5809 DrawInfo
5810 *clone_info;
5811
5812 MagickBooleanType
5813 closed_path;
5814
5815 MagickStatusType
5816 status;
5817
5818 PrimitiveInfo
5819 *stroke_polygon;
5820
5821 const PrimitiveInfo
5822 *p,
5823 *q;
5824
5825 /*
5826 Draw stroked polygon.
5827 */
5828 if (draw_info->debug != MagickFalse)
5829 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5830 " begin draw-stroke-polygon");
5831 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5832 clone_info->fill=draw_info->stroke;
5833 if (clone_info->fill_pattern != (Image *) NULL)
5834 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5835 if (clone_info->stroke_pattern != (Image *) NULL)
5836 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5837 MagickTrue,&clone_info->stroke_pattern->exception);
5838 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5839 clone_info->stroke_width=0.0;
5840 clone_info->fill_rule=NonZeroRule;
5841 status=MagickTrue;
5842 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5843 {
5844 if (p->coordinates == 1)
5845 continue;
5846 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5847 if (stroke_polygon == (PrimitiveInfo *) NULL)
5848 {
5849 status=0;
5850 break;
5851 }
5852 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5853 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5854 if (status == 0)
5855 break;
5856 q=p+p->coordinates-1;
5857 closed_path=p->closed_subpath;
5858 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5859 {
5860 status&=DrawRoundLinecap(image,draw_info,p);
5861 status&=DrawRoundLinecap(image,draw_info,q);
5862 }
5863 }
5864 clone_info=DestroyDrawInfo(clone_info);
5865 if (draw_info->debug != MagickFalse)
5866 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5867 " end draw-stroke-polygon");
5868 return(status != 0 ? MagickTrue : MagickFalse);
5869}
5870␌
5871/*
5872%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5873% %
5874% %
5875% %
5876% G e t A f f i n e M a t r i x %
5877% %
5878% %
5879% %
5880%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5881%
5882% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5883% matrix.
5884%
5885% The format of the GetAffineMatrix method is:
5886%
5887% void GetAffineMatrix(AffineMatrix *affine_matrix)
5888%
5889% A description of each parameter follows:
5890%
5891% o affine_matrix: the affine matrix.
5892%
5893*/
5894MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5895{
5896 assert(affine_matrix != (AffineMatrix *) NULL);
5897 if (IsEventLogging() != MagickFalse)
5898 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5899 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5900 affine_matrix->sx=1.0;
5901 affine_matrix->sy=1.0;
5902}
5903␌
5904/*
5905%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5906% %
5907% %
5908% %
5909+ G e t D r a w I n f o %
5910% %
5911% %
5912% %
5913%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5914%
5915% GetDrawInfo() initializes draw_info to default values from image_info.
5916%
5917% The format of the GetDrawInfo method is:
5918%
5919% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5920%
5921% A description of each parameter follows:
5922%
5923% o image_info: the image info..
5924%
5925% o draw_info: the draw info.
5926%
5927*/
5928MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5929{
5930 char
5931 *next_token;
5932
5933 const char
5934 *option;
5935
5936 ExceptionInfo
5937 *exception;
5938
5939 /*
5940 Initialize draw attributes.
5941 */
5942 assert(draw_info != (DrawInfo *) NULL);
5943 if (IsEventLogging() != MagickFalse)
5944 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5945 (void) memset(draw_info,0,sizeof(*draw_info));
5946 draw_info->image_info=CloneImageInfo(image_info);
5947 GetAffineMatrix(&draw_info->affine);
5948 exception=AcquireExceptionInfo();
5949 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5950 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5951 draw_info->stroke_antialias=draw_info->image_info->antialias;
5952 draw_info->stroke_width=1.0;
5953 draw_info->fill_rule=EvenOddRule;
5954 draw_info->opacity=OpaqueOpacity;
5955 draw_info->fill_opacity=OpaqueOpacity;
5956 draw_info->stroke_opacity=OpaqueOpacity;
5957 draw_info->linecap=ButtCap;
5958 draw_info->linejoin=MiterJoin;
5959 draw_info->miterlimit=10;
5960 draw_info->decorate=NoDecoration;
5961 if (draw_info->image_info->font != (char *) NULL)
5962 draw_info->font=AcquireString(draw_info->image_info->font);
5963 if (draw_info->image_info->density != (char *) NULL)
5964 draw_info->density=AcquireString(draw_info->image_info->density);
5965 draw_info->text_antialias=draw_info->image_info->antialias;
5966 draw_info->pointsize=12.0;
5967 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5968 draw_info->pointsize=draw_info->image_info->pointsize;
5969 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5970 draw_info->border_color=draw_info->image_info->border_color;
5971 draw_info->compose=OverCompositeOp;
5972 if (draw_info->image_info->server_name != (char *) NULL)
5973 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5974 draw_info->render=MagickTrue;
5975 draw_info->clip_path=MagickFalse;
5976 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5977 MagickTrue : MagickFalse;
5978 option=GetImageOption(draw_info->image_info,"direction");
5979 if (option != (const char *) NULL)
5980 draw_info->direction=(DirectionType) ParseCommandOption(
5981 MagickDirectionOptions,MagickFalse,option);
5982 else
5983 draw_info->direction=UndefinedDirection;
5984 option=GetImageOption(draw_info->image_info,"encoding");
5985 if (option != (const char *) NULL)
5986 (void) CloneString(&draw_info->encoding,option);
5987 option=GetImageOption(draw_info->image_info,"family");
5988 if (option != (const char *) NULL)
5989 (void) CloneString(&draw_info->family,option);
5990 option=GetImageOption(draw_info->image_info,"fill");
5991 if (option != (const char *) NULL)
5992 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5993 option=GetImageOption(draw_info->image_info,"gravity");
5994 if (option != (const char *) NULL)
5995 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5996 MagickFalse,option);
5997 option=GetImageOption(draw_info->image_info,"interline-spacing");
5998 if (option != (const char *) NULL)
5999 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6000 option=GetImageOption(draw_info->image_info,"interword-spacing");
6001 if (option != (const char *) NULL)
6002 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6003 option=GetImageOption(draw_info->image_info,"kerning");
6004 if (option != (const char *) NULL)
6005 draw_info->kerning=GetDrawValue(option,&next_token);
6006 option=GetImageOption(draw_info->image_info,"stroke");
6007 if (option != (const char *) NULL)
6008 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6009 option=GetImageOption(draw_info->image_info,"strokewidth");
6010 if (option != (const char *) NULL)
6011 draw_info->stroke_width=GetDrawValue(option,&next_token);
6012 option=GetImageOption(draw_info->image_info,"style");
6013 if (option != (const char *) NULL)
6014 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6015 MagickFalse,option);
6016 option=GetImageOption(draw_info->image_info,"undercolor");
6017 if (option != (const char *) NULL)
6018 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6019 option=GetImageOption(draw_info->image_info,"weight");
6020 if (option != (const char *) NULL)
6021 {
6022 ssize_t
6023 weight;
6024
6025 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6026 if (weight == -1)
6027 weight=(ssize_t) StringToUnsignedLong(option);
6028 draw_info->weight=(size_t) weight;
6029 }
6030 exception=DestroyExceptionInfo(exception);
6031 draw_info->signature=MagickCoreSignature;
6032}
6033␌
6034/*
6035%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6036% %
6037% %
6038% %
6039+ P e r m u t a t e %
6040% %
6041% %
6042% %
6043%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6044%
6045% Permutate() returns the permutation of the (n,k).
6046%
6047% The format of the Permutate method is:
6048%
6049% void Permutate(ssize_t n,ssize_t k)
6050%
6051% A description of each parameter follows:
6052%
6053% o n:
6054%
6055% o k:
6056%
6057%
6058*/
6059static inline double Permutate(const ssize_t n,const ssize_t k)
6060{
6061 double
6062 r;
6063
6064 ssize_t
6065 i;
6066
6067 r=1.0;
6068 for (i=k+1; i <= n; i++)
6069 r*=i;
6070 for (i=1; i <= (n-k); i++)
6071 r/=i;
6072 return(r);
6073}
6074␌
6075/*
6076%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6077% %
6078% %
6079% %
6080+ T r a c e P r i m i t i v e %
6081% %
6082% %
6083% %
6084%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6085%
6086% TracePrimitive is a collection of methods for generating graphic
6087% primitives such as arcs, ellipses, paths, etc.
6088%
6089*/
6090
6091static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6092 const PointInfo end,const PointInfo degrees)
6093{
6094 PointInfo
6095 center,
6096 radius;
6097
6098 center.x=0.5*(end.x+start.x);
6099 center.y=0.5*(end.y+start.y);
6100 radius.x=fabs(center.x-start.x);
6101 radius.y=fabs(center.y-start.y);
6102 return(TraceEllipse(mvg_info,center,radius,degrees));
6103}
6104
6105static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6106 const PointInfo end,const PointInfo arc,const double angle,
6107 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6108{
6109 double
6110 alpha,
6111 beta,
6112 delta,
6113 factor,
6114 gamma,
6115 theta;
6116
6117 MagickStatusType
6118 status;
6119
6120 PointInfo
6121 center,
6122 points[3],
6123 radii;
6124
6125 double
6126 cosine,
6127 sine;
6128
6129 PrimitiveInfo
6130 *primitive_info;
6131
6132 PrimitiveInfo
6133 *p;
6134
6135 ssize_t
6136 i;
6137
6138 size_t
6139 arc_segments;
6140
6141 ssize_t
6142 offset;
6143
6144 offset=mvg_info->offset;
6145 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6146 primitive_info->coordinates=0;
6147 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6148 (fabs(start.y-end.y) < MagickEpsilon))
6149 return(TracePoint(primitive_info,end));
6150 radii.x=fabs(arc.x);
6151 radii.y=fabs(arc.y);
6152 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6153 return(TraceLine(primitive_info,start,end));
6154 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6155 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6156 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6157 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6158 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6159 (radii.y*radii.y);
6160 if (delta < MagickEpsilon)
6161 return(TraceLine(primitive_info,start,end));
6162 if (delta > 1.0)
6163 {
6164 radii.x*=sqrt((double) delta);
6165 radii.y*=sqrt((double) delta);
6166 }
6167 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6168 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6169 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6170 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6171 alpha=points[1].x-points[0].x;
6172 beta=points[1].y-points[0].y;
6173 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6174 return(TraceLine(primitive_info,start,end));
6175 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6176 if (factor <= 0.0)
6177 factor=0.0;
6178 else
6179 {
6180 factor=sqrt((double) factor);
6181 if (sweep == large_arc)
6182 factor=(-factor);
6183 }
6184 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6185 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6186 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6187 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6188 if ((theta < 0.0) && (sweep != MagickFalse))
6189 theta+=2.0*MagickPI;
6190 else
6191 if ((theta > 0.0) && (sweep == MagickFalse))
6192 theta-=2.0*MagickPI;
6193 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6194 MagickPI+MagickEpsilon)))));
6195 p=primitive_info;
6196 status=MagickTrue;
6197 for (i=0; i < (ssize_t) arc_segments; i++)
6198 {
6199 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6200 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6201 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6202 sin(fmod((double) beta,DegreesToRadians(360.0)));
6203 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6204 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6205 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6206 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6207 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6208 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6209 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6210 theta/arc_segments),DegreesToRadians(360.0))));
6211 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6212 theta/arc_segments),DegreesToRadians(360.0))));
6213 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6214 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6215 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6216 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6217 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6218 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6219 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6220 points[0].y);
6221 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6222 points[0].y);
6223 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6224 points[1].y);
6225 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6226 points[1].y);
6227 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6228 points[2].y);
6229 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6230 points[2].y);
6231 if (i == (ssize_t) (arc_segments-1))
6232 (p+3)->point=end;
6233 status&=TraceBezier(mvg_info,4);
6234 if (status == 0)
6235 break;
6236 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6237 mvg_info->offset+=p->coordinates;
6238 p+=(ptrdiff_t) p->coordinates;
6239 }
6240 if (status == 0)
6241 return(MagickFalse);
6242 mvg_info->offset=offset;
6243 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6244 primitive_info->coordinates=(size_t) (p-primitive_info);
6245 primitive_info->closed_subpath=MagickFalse;
6246 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6247 {
6248 p->primitive=primitive_info->primitive;
6249 p--;
6250 }
6251 return(MagickTrue);
6252}
6253
6254static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6255 const size_t number_coordinates)
6256{
6257 double
6258 alpha,
6259 *coefficients,
6260 weight;
6261
6262 PointInfo
6263 end,
6264 point,
6265 *points;
6266
6267 PrimitiveInfo
6268 *primitive_info;
6269
6270 PrimitiveInfo
6271 *p;
6272
6273 ssize_t
6274 i,
6275 j;
6276
6277 size_t
6278 control_points,
6279 quantum;
6280
6281 /*
6282 Allocate coefficients.
6283 */
6284 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6285 quantum=number_coordinates;
6286 for (i=0; i < (ssize_t) number_coordinates; i++)
6287 {
6288 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6289 {
6290 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6291 if (alpha > (double) GetMaxMemoryRequest())
6292 {
6293 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6294 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6295 return(MagickFalse);
6296 }
6297 if (alpha > (double) quantum)
6298 quantum=(size_t) alpha;
6299 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6300 if (alpha > (double) quantum)
6301 quantum=(size_t) alpha;
6302 }
6303 }
6304 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6305 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6306 if (quantum > (double) GetMaxMemoryRequest())
6307 {
6308 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6309 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6310 return(MagickFalse);
6311 }
6312 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6313 sizeof(*coefficients));
6314 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6315 sizeof(*points));
6316 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6317 {
6318 if (points != (PointInfo *) NULL)
6319 points=(PointInfo *) RelinquishMagickMemory(points);
6320 if (coefficients != (double *) NULL)
6321 coefficients=(double *) RelinquishMagickMemory(coefficients);
6322 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6323 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6324 return(MagickFalse);
6325 }
6326 control_points=quantum*number_coordinates;
6327 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6328 {
6329 points=(PointInfo *) RelinquishMagickMemory(points);
6330 coefficients=(double *) RelinquishMagickMemory(coefficients);
6331 return(MagickFalse);
6332 }
6333 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6334 /*
6335 Compute bezier points.
6336 */
6337 end=primitive_info[number_coordinates-1].point;
6338 for (i=0; i < (ssize_t) number_coordinates; i++)
6339 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6340 weight=0.0;
6341 for (i=0; i < (ssize_t) control_points; i++)
6342 {
6343 p=primitive_info;
6344 point.x=0.0;
6345 point.y=0.0;
6346 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6347 for (j=0; j < (ssize_t) number_coordinates; j++)
6348 {
6349 point.x+=alpha*coefficients[j]*p->point.x;
6350 point.y+=alpha*coefficients[j]*p->point.y;
6351 alpha*=weight/(1.0-weight);
6352 p++;
6353 }
6354 points[i]=point;
6355 weight+=1.0/control_points;
6356 }
6357 /*
6358 Bezier curves are just short segmented polys.
6359 */
6360 p=primitive_info;
6361 for (i=0; i < (ssize_t) control_points; i++)
6362 {
6363 if (TracePoint(p,points[i]) == MagickFalse)
6364 {
6365 points=(PointInfo *) RelinquishMagickMemory(points);
6366 coefficients=(double *) RelinquishMagickMemory(coefficients);
6367 return(MagickFalse);
6368 }
6369 p+=(ptrdiff_t) p->coordinates;
6370 }
6371 if (TracePoint(p,end) == MagickFalse)
6372 {
6373 points=(PointInfo *) RelinquishMagickMemory(points);
6374 coefficients=(double *) RelinquishMagickMemory(coefficients);
6375 return(MagickFalse);
6376 }
6377 p+=(ptrdiff_t) p->coordinates;
6378 primitive_info->coordinates=(size_t) (p-primitive_info);
6379 primitive_info->closed_subpath=MagickFalse;
6380 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6381 {
6382 p->primitive=primitive_info->primitive;
6383 p--;
6384 }
6385 points=(PointInfo *) RelinquishMagickMemory(points);
6386 coefficients=(double *) RelinquishMagickMemory(coefficients);
6387 return(MagickTrue);
6388}
6389
6390static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6391 const PointInfo end)
6392{
6393 double
6394 alpha,
6395 beta,
6396 radius;
6397
6398 PointInfo
6399 offset,
6400 degrees;
6401
6402 alpha=end.x-start.x;
6403 beta=end.y-start.y;
6404 radius=hypot((double) alpha,(double) beta);
6405 offset.x=(double) radius;
6406 offset.y=(double) radius;
6407 degrees.x=0.0;
6408 degrees.y=360.0;
6409 return(TraceEllipse(mvg_info,start,offset,degrees));
6410}
6411
6412static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6413 const PointInfo radii,const PointInfo arc)
6414{
6415 double
6416 coordinates,
6417 delta,
6418 step,
6419 x,
6420 y;
6421
6422 PointInfo
6423 angle,
6424 point;
6425
6426 PrimitiveInfo
6427 *primitive_info;
6428
6429 PrimitiveInfo
6430 *p;
6431
6432 ssize_t
6433 i;
6434
6435 /*
6436 Ellipses are just short segmented polys.
6437 */
6438 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6439 primitive_info->coordinates=0;
6440 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6441 return(MagickTrue);
6442 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6443 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6444 angle.x=DegreesToRadians(arc.x);
6445 y=arc.y;
6446 while (y < arc.x)
6447 y+=360.0;
6448 angle.y=DegreesToRadians(y);
6449 coordinates=ceil((angle.y-angle.x)/step+1.0);
6450 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6451 return(MagickFalse);
6452 i=0;
6453 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6454 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6455 {
6456 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6457 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6458 if (i++ >= (ssize_t) coordinates)
6459 break;
6460 if (TracePoint(p,point) == MagickFalse)
6461 return(MagickFalse);
6462 p+=(ptrdiff_t) p->coordinates;
6463 }
6464 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6465 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6466 if (TracePoint(p,point) == MagickFalse)
6467 return(MagickFalse);
6468 p+=(ptrdiff_t) p->coordinates;
6469 primitive_info->coordinates=(size_t) (p-primitive_info);
6470 primitive_info->closed_subpath=MagickFalse;
6471 x=fabs(primitive_info[0].point.x-
6472 primitive_info[primitive_info->coordinates-1].point.x);
6473 y=fabs(primitive_info[0].point.y-
6474 primitive_info[primitive_info->coordinates-1].point.y);
6475 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6476 primitive_info->closed_subpath=MagickTrue;
6477 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6478 {
6479 p->primitive=primitive_info->primitive;
6480 p--;
6481 }
6482 return(MagickTrue);
6483}
6484
6485static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6486 const PointInfo start,const PointInfo end)
6487{
6488 if (TracePoint(primitive_info,start) == MagickFalse)
6489 return(MagickFalse);
6490 if (TracePoint(primitive_info+1,end) == MagickFalse)
6491 return(MagickFalse);
6492 (primitive_info+1)->primitive=primitive_info->primitive;
6493 primitive_info->coordinates=2;
6494 primitive_info->closed_subpath=MagickFalse;
6495 return(MagickTrue);
6496}
6497
6498static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6499{
6500 char
6501 *next_token,
6502 token[MaxTextExtent] = "";
6503
6504 const char
6505 *p;
6506
6507 double
6508 x,
6509 y;
6510
6511 int
6512 attribute,
6513 last_attribute;
6514
6515 MagickStatusType
6516 status;
6517
6518 PointInfo
6519 end = {0.0, 0.0},
6520 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6521 point = {0.0, 0.0},
6522 start = {0.0, 0.0};
6523
6524 PrimitiveInfo
6525 *primitive_info;
6526
6527 PrimitiveType
6528 primitive_type;
6529
6530 PrimitiveInfo
6531 *q;
6532
6533 ssize_t
6534 i;
6535
6536 size_t
6537 number_coordinates,
6538 z_count;
6539
6540 ssize_t
6541 subpath_offset;
6542
6543 subpath_offset=mvg_info->offset;
6544 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6545 status=MagickTrue;
6546 attribute=0;
6547 number_coordinates=0;
6548 z_count=0;
6549 *token='\0';
6550 primitive_type=primitive_info->primitive;
6551 q=primitive_info;
6552 for (p=path; *p != '\0'; )
6553 {
6554 if (status == MagickFalse)
6555 break;
6556 while (isspace((int) ((unsigned char) *p)) != 0)
6557 p++;
6558 if (*p == '\0')
6559 break;
6560 last_attribute=attribute;
6561 attribute=(int) (*p++);
6562 switch (attribute)
6563 {
6564 case 'a':
6565 case 'A':
6566 {
6567 double
6568 angle = 0.0;
6569
6570 MagickBooleanType
6571 large_arc = MagickFalse,
6572 sweep = MagickFalse;
6573
6574 PointInfo
6575 arc = {0.0, 0.0};
6576
6577 /*
6578 Elliptical arc.
6579 */
6580 do
6581 {
6582 (void) GetNextToken(p,&p,MaxTextExtent,token);
6583 if (*token == ',')
6584 (void) GetNextToken(p,&p,MaxTextExtent,token);
6585 arc.x=GetDrawValue(token,&next_token);
6586 if (token == next_token)
6587 ThrowPointExpectedException(image,token);
6588 (void) GetNextToken(p,&p,MaxTextExtent,token);
6589 if (*token == ',')
6590 (void) GetNextToken(p,&p,MaxTextExtent,token);
6591 arc.y=GetDrawValue(token,&next_token);
6592 if (token == next_token)
6593 ThrowPointExpectedException(image,token);
6594 (void) GetNextToken(p,&p,MaxTextExtent,token);
6595 if (*token == ',')
6596 (void) GetNextToken(p,&p,MaxTextExtent,token);
6597 angle=GetDrawValue(token,&next_token);
6598 if (token == next_token)
6599 ThrowPointExpectedException(image,token);
6600 (void) GetNextToken(p,&p,MaxTextExtent,token);
6601 if (*token == ',')
6602 (void) GetNextToken(p,&p,MaxTextExtent,token);
6603 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6604 (void) GetNextToken(p,&p,MaxTextExtent,token);
6605 if (*token == ',')
6606 (void) GetNextToken(p,&p,MaxTextExtent,token);
6607 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6608 if (*token == ',')
6609 (void) GetNextToken(p,&p,MaxTextExtent,token);
6610 (void) GetNextToken(p,&p,MaxTextExtent,token);
6611 if (*token == ',')
6612 (void) GetNextToken(p,&p,MaxTextExtent,token);
6613 x=GetDrawValue(token,&next_token);
6614 if (token == next_token)
6615 ThrowPointExpectedException(image,token);
6616 (void) GetNextToken(p,&p,MaxTextExtent,token);
6617 if (*token == ',')
6618 (void) GetNextToken(p,&p,MaxTextExtent,token);
6619 y=GetDrawValue(token,&next_token);
6620 if (token == next_token)
6621 ThrowPointExpectedException(image,token);
6622 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6623 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6624 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6625 q=(*mvg_info->primitive_info)+mvg_info->offset;
6626 mvg_info->offset+=q->coordinates;
6627 q+=(ptrdiff_t) q->coordinates;
6628 point=end;
6629 while (isspace((int) ((unsigned char) *p)) != 0)
6630 p++;
6631 if (*p == ',')
6632 p++;
6633 } while (IsPoint(p) != MagickFalse);
6634 break;
6635 }
6636 case 'c':
6637 case 'C':
6638 {
6639 /*
6640 Cubic Bézier curve.
6641 */
6642 do
6643 {
6644 points[0]=point;
6645 for (i=1; i < 4; i++)
6646 {
6647 (void) GetNextToken(p,&p,MaxTextExtent,token);
6648 if (*token == ',')
6649 (void) GetNextToken(p,&p,MaxTextExtent,token);
6650 x=GetDrawValue(token,&next_token);
6651 if (token == next_token)
6652 ThrowPointExpectedException(image,token);
6653 (void) GetNextToken(p,&p,MaxTextExtent,token);
6654 if (*token == ',')
6655 (void) GetNextToken(p,&p,MaxTextExtent,token);
6656 y=GetDrawValue(token,&next_token);
6657 if (token == next_token)
6658 ThrowPointExpectedException(image,token);
6659 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6660 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6661 points[i]=end;
6662 }
6663 for (i=0; i < 4; i++)
6664 (q+i)->point=points[i];
6665 if (TraceBezier(mvg_info,4) == MagickFalse)
6666 return(-1);
6667 q=(*mvg_info->primitive_info)+mvg_info->offset;
6668 mvg_info->offset+=q->coordinates;
6669 q+=(ptrdiff_t) q->coordinates;
6670 point=end;
6671 while (isspace((int) ((unsigned char) *p)) != 0)
6672 p++;
6673 if (*p == ',')
6674 p++;
6675 } while (IsPoint(p) != MagickFalse);
6676 break;
6677 }
6678 case 'H':
6679 case 'h':
6680 {
6681 do
6682 {
6683 (void) GetNextToken(p,&p,MaxTextExtent,token);
6684 if (*token == ',')
6685 (void) GetNextToken(p,&p,MaxTextExtent,token);
6686 x=GetDrawValue(token,&next_token);
6687 if (token == next_token)
6688 ThrowPointExpectedException(image,token);
6689 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6690 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6691 return(-1);
6692 q=(*mvg_info->primitive_info)+mvg_info->offset;
6693 if (TracePoint(q,point) == MagickFalse)
6694 return(-1);
6695 mvg_info->offset+=q->coordinates;
6696 q+=(ptrdiff_t) q->coordinates;
6697 while (isspace((int) ((unsigned char) *p)) != 0)
6698 p++;
6699 if (*p == ',')
6700 p++;
6701 } while (IsPoint(p) != MagickFalse);
6702 break;
6703 }
6704 case 'l':
6705 case 'L':
6706 {
6707 /*
6708 Line to.
6709 */
6710 do
6711 {
6712 (void) GetNextToken(p,&p,MaxTextExtent,token);
6713 if (*token == ',')
6714 (void) GetNextToken(p,&p,MaxTextExtent,token);
6715 x=GetDrawValue(token,&next_token);
6716 if (token == next_token)
6717 ThrowPointExpectedException(image,token);
6718 (void) GetNextToken(p,&p,MaxTextExtent,token);
6719 if (*token == ',')
6720 (void) GetNextToken(p,&p,MaxTextExtent,token);
6721 y=GetDrawValue(token,&next_token);
6722 if (token == next_token)
6723 ThrowPointExpectedException(image,token);
6724 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6725 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6726 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6727 return(-1);
6728 q=(*mvg_info->primitive_info)+mvg_info->offset;
6729 if (TracePoint(q,point) == MagickFalse)
6730 return(-1);
6731 mvg_info->offset+=q->coordinates;
6732 q+=(ptrdiff_t) q->coordinates;
6733 while (isspace((int) ((unsigned char) *p)) != 0)
6734 p++;
6735 if (*p == ',')
6736 p++;
6737 } while (IsPoint(p) != MagickFalse);
6738 break;
6739 }
6740 case 'M':
6741 case 'm':
6742 {
6743 /*
6744 Move to.
6745 */
6746 if (mvg_info->offset != subpath_offset)
6747 {
6748 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6749 primitive_info->coordinates=(size_t) (q-primitive_info);
6750 number_coordinates+=primitive_info->coordinates;
6751 primitive_info=q;
6752 subpath_offset=mvg_info->offset;
6753 }
6754 i=0;
6755 do
6756 {
6757 (void) GetNextToken(p,&p,MaxTextExtent,token);
6758 if (*token == ',')
6759 (void) GetNextToken(p,&p,MaxTextExtent,token);
6760 x=GetDrawValue(token,&next_token);
6761 if (token == next_token)
6762 ThrowPointExpectedException(image,token);
6763 (void) GetNextToken(p,&p,MaxTextExtent,token);
6764 if (*token == ',')
6765 (void) GetNextToken(p,&p,MaxTextExtent,token);
6766 y=GetDrawValue(token,&next_token);
6767 if (token == next_token)
6768 ThrowPointExpectedException(image,token);
6769 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6770 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6771 if (i == 0)
6772 start=point;
6773 i++;
6774 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6775 return(-1);
6776 q=(*mvg_info->primitive_info)+mvg_info->offset;
6777 if (TracePoint(q,point) == MagickFalse)
6778 return(-1);
6779 mvg_info->offset+=q->coordinates;
6780 q+=(ptrdiff_t) q->coordinates;
6781 while (isspace((int) ((unsigned char) *p)) != 0)
6782 p++;
6783 if (*p == ',')
6784 p++;
6785 } while (IsPoint(p) != MagickFalse);
6786 break;
6787 }
6788 case 'q':
6789 case 'Q':
6790 {
6791 /*
6792 Quadratic Bézier curve.
6793 */
6794 do
6795 {
6796 points[0]=point;
6797 for (i=1; i < 3; i++)
6798 {
6799 (void) GetNextToken(p,&p,MaxTextExtent,token);
6800 if (*token == ',')
6801 (void) GetNextToken(p,&p,MaxTextExtent,token);
6802 x=GetDrawValue(token,&next_token);
6803 if (token == next_token)
6804 ThrowPointExpectedException(image,token);
6805 (void) GetNextToken(p,&p,MaxTextExtent,token);
6806 if (*token == ',')
6807 (void) GetNextToken(p,&p,MaxTextExtent,token);
6808 y=GetDrawValue(token,&next_token);
6809 if (token == next_token)
6810 ThrowPointExpectedException(image,token);
6811 if (*p == ',')
6812 p++;
6813 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6814 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6815 points[i]=end;
6816 }
6817 for (i=0; i < 3; i++)
6818 (q+i)->point=points[i];
6819 if (TraceBezier(mvg_info,3) == MagickFalse)
6820 return(-1);
6821 q=(*mvg_info->primitive_info)+mvg_info->offset;
6822 mvg_info->offset+=q->coordinates;
6823 q+=(ptrdiff_t) q->coordinates;
6824 point=end;
6825 while (isspace((int) ((unsigned char) *p)) != 0)
6826 p++;
6827 if (*p == ',')
6828 p++;
6829 } while (IsPoint(p) != MagickFalse);
6830 break;
6831 }
6832 case 's':
6833 case 'S':
6834 {
6835 /*
6836 Cubic Bézier curve.
6837 */
6838 do
6839 {
6840 points[0]=points[3];
6841 points[1].x=2.0*points[3].x-points[2].x;
6842 points[1].y=2.0*points[3].y-points[2].y;
6843 for (i=2; i < 4; i++)
6844 {
6845 (void) GetNextToken(p,&p,MaxTextExtent,token);
6846 if (*token == ',')
6847 (void) GetNextToken(p,&p,MaxTextExtent,token);
6848 x=GetDrawValue(token,&next_token);
6849 if (token == next_token)
6850 ThrowPointExpectedException(image,token);
6851 (void) GetNextToken(p,&p,MaxTextExtent,token);
6852 if (*token == ',')
6853 (void) GetNextToken(p,&p,MaxTextExtent,token);
6854 y=GetDrawValue(token,&next_token);
6855 if (token == next_token)
6856 ThrowPointExpectedException(image,token);
6857 if (*p == ',')
6858 p++;
6859 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6860 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6861 points[i]=end;
6862 }
6863 if (strchr("CcSs",last_attribute) == (char *) NULL)
6864 {
6865 points[0]=point;
6866 points[1]=point;
6867 }
6868 for (i=0; i < 4; i++)
6869 (q+i)->point=points[i];
6870 if (TraceBezier(mvg_info,4) == MagickFalse)
6871 return(-1);
6872 q=(*mvg_info->primitive_info)+mvg_info->offset;
6873 mvg_info->offset+=q->coordinates;
6874 q+=(ptrdiff_t) q->coordinates;
6875 point=end;
6876 last_attribute=attribute;
6877 while (isspace((int) ((unsigned char) *p)) != 0)
6878 p++;
6879 if (*p == ',')
6880 p++;
6881 } while (IsPoint(p) != MagickFalse);
6882 break;
6883 }
6884 case 't':
6885 case 'T':
6886 {
6887 /*
6888 Quadratic Bézier curve.
6889 */
6890 do
6891 {
6892 points[0]=points[2];
6893 points[1].x=2.0*points[2].x-points[1].x;
6894 points[1].y=2.0*points[2].y-points[1].y;
6895 for (i=2; i < 3; i++)
6896 {
6897 (void) GetNextToken(p,&p,MaxTextExtent,token);
6898 if (*token == ',')
6899 (void) GetNextToken(p,&p,MaxTextExtent,token);
6900 x=GetDrawValue(token,&next_token);
6901 if (token == next_token)
6902 ThrowPointExpectedException(image,token);
6903 (void) GetNextToken(p,&p,MaxTextExtent,token);
6904 if (*token == ',')
6905 (void) GetNextToken(p,&p,MaxTextExtent,token);
6906 y=GetDrawValue(token,&next_token);
6907 if (token == next_token)
6908 ThrowPointExpectedException(image,token);
6909 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6910 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6911 points[i]=end;
6912 }
6913 if (status == MagickFalse)
6914 break;
6915 if (strchr("QqTt",last_attribute) == (char *) NULL)
6916 {
6917 points[0]=point;
6918 points[1]=point;
6919 }
6920 for (i=0; i < 3; i++)
6921 (q+i)->point=points[i];
6922 if (TraceBezier(mvg_info,3) == MagickFalse)
6923 return(-1);
6924 q=(*mvg_info->primitive_info)+mvg_info->offset;
6925 mvg_info->offset+=q->coordinates;
6926 q+=(ptrdiff_t) q->coordinates;
6927 point=end;
6928 last_attribute=attribute;
6929 while (isspace((int) ((unsigned char) *p)) != 0)
6930 p++;
6931 if (*p == ',')
6932 p++;
6933 } while (IsPoint(p) != MagickFalse);
6934 break;
6935 }
6936 case 'v':
6937 case 'V':
6938 {
6939 /*
6940 Line to.
6941 */
6942 do
6943 {
6944 (void) GetNextToken(p,&p,MaxTextExtent,token);
6945 if (*token == ',')
6946 (void) GetNextToken(p,&p,MaxTextExtent,token);
6947 y=GetDrawValue(token,&next_token);
6948 if (token == next_token)
6949 ThrowPointExpectedException(image,token);
6950 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6951 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6952 return(-1);
6953 q=(*mvg_info->primitive_info)+mvg_info->offset;
6954 if (TracePoint(q,point) == MagickFalse)
6955 return(-1);
6956 mvg_info->offset+=q->coordinates;
6957 q+=(ptrdiff_t) q->coordinates;
6958 while (isspace((int) ((unsigned char) *p)) != 0)
6959 p++;
6960 if (*p == ',')
6961 p++;
6962 } while (IsPoint(p) != MagickFalse);
6963 break;
6964 }
6965 case 'z':
6966 case 'Z':
6967 {
6968 /*
6969 Close path.
6970 */
6971 point=start;
6972 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6973 return(-1);
6974 q=(*mvg_info->primitive_info)+mvg_info->offset;
6975 if (TracePoint(q,point) == MagickFalse)
6976 return(-1);
6977 mvg_info->offset+=q->coordinates;
6978 q+=(ptrdiff_t) q->coordinates;
6979 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6980 primitive_info->coordinates=(size_t) (q-primitive_info);
6981 primitive_info->closed_subpath=MagickTrue;
6982 number_coordinates+=primitive_info->coordinates;
6983 primitive_info=q;
6984 subpath_offset=mvg_info->offset;
6985 z_count++;
6986 break;
6987 }
6988 default:
6989 {
6990 ThrowPointExpectedException(image,token);
6991 break;
6992 }
6993 }
6994 }
6995 if (status == MagickFalse)
6996 return(-1);
6997 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6998 primitive_info->coordinates=(size_t) (q-primitive_info);
6999 number_coordinates+=primitive_info->coordinates;
7000 for (i=0; i < (ssize_t) number_coordinates; i++)
7001 {
7002 q--;
7003 q->primitive=primitive_type;
7004 if (z_count > 1)
7005 q->method=FillToBorderMethod;
7006 }
7007 q=primitive_info;
7008 return((ssize_t) number_coordinates);
7009}
7010
7011static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7012 const PointInfo start,const PointInfo end)
7013{
7014 PointInfo
7015 point;
7016
7017 PrimitiveInfo
7018 *p;
7019
7020 ssize_t
7021 i;
7022
7023 p=primitive_info;
7024 if (TracePoint(p,start) == MagickFalse)
7025 return(MagickFalse);
7026 p+=(ptrdiff_t) p->coordinates;
7027 point.x=start.x;
7028 point.y=end.y;
7029 if (TracePoint(p,point) == MagickFalse)
7030 return(MagickFalse);
7031 p+=(ptrdiff_t) p->coordinates;
7032 if (TracePoint(p,end) == MagickFalse)
7033 return(MagickFalse);
7034 p+=(ptrdiff_t) p->coordinates;
7035 point.x=end.x;
7036 point.y=start.y;
7037 if (TracePoint(p,point) == MagickFalse)
7038 return(MagickFalse);
7039 p+=(ptrdiff_t) p->coordinates;
7040 if (TracePoint(p,start) == MagickFalse)
7041 return(MagickFalse);
7042 p+=(ptrdiff_t) p->coordinates;
7043 primitive_info->coordinates=(size_t) (p-primitive_info);
7044 primitive_info->closed_subpath=MagickTrue;
7045 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7046 {
7047 p->primitive=primitive_info->primitive;
7048 p--;
7049 }
7050 return(MagickTrue);
7051}
7052
7053static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7054 const PointInfo start,const PointInfo end,PointInfo arc)
7055{
7056 PointInfo
7057 degrees,
7058 point,
7059 segment;
7060
7061 PrimitiveInfo
7062 *primitive_info;
7063
7064 PrimitiveInfo
7065 *p;
7066
7067 ssize_t
7068 i;
7069
7070 ssize_t
7071 offset;
7072
7073 offset=mvg_info->offset;
7074 segment.x=fabs(end.x-start.x);
7075 segment.y=fabs(end.y-start.y);
7076 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7077 {
7078 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7079 return(MagickTrue);
7080 }
7081 if (arc.x > (0.5*segment.x))
7082 arc.x=0.5*segment.x;
7083 if (arc.y > (0.5*segment.y))
7084 arc.y=0.5*segment.y;
7085 point.x=start.x+segment.x-arc.x;
7086 point.y=start.y+arc.y;
7087 degrees.x=270.0;
7088 degrees.y=360.0;
7089 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7090 return(MagickFalse);
7091 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7092 mvg_info->offset+=p->coordinates;
7093 point.x=start.x+segment.x-arc.x;
7094 point.y=start.y+segment.y-arc.y;
7095 degrees.x=0.0;
7096 degrees.y=90.0;
7097 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7098 return(MagickFalse);
7099 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7100 mvg_info->offset+=p->coordinates;
7101 point.x=start.x+arc.x;
7102 point.y=start.y+segment.y-arc.y;
7103 degrees.x=90.0;
7104 degrees.y=180.0;
7105 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7106 return(MagickFalse);
7107 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7108 mvg_info->offset+=p->coordinates;
7109 point.x=start.x+arc.x;
7110 point.y=start.y+arc.y;
7111 degrees.x=180.0;
7112 degrees.y=270.0;
7113 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7114 return(MagickFalse);
7115 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7116 mvg_info->offset+=p->coordinates;
7117 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7118 return(MagickFalse);
7119 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7120 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7121 return(MagickFalse);
7122 p+=(ptrdiff_t) p->coordinates;
7123 mvg_info->offset=offset;
7124 primitive_info=(*mvg_info->primitive_info)+offset;
7125 primitive_info->coordinates=(size_t) (p-primitive_info);
7126 primitive_info->closed_subpath=MagickTrue;
7127 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7128 {
7129 p->primitive=primitive_info->primitive;
7130 p--;
7131 }
7132 return(MagickTrue);
7133}
7134
7135static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7136 const size_t number_vertices,const double offset)
7137{
7138 double
7139 distance;
7140
7141 double
7142 dx,
7143 dy;
7144
7145 ssize_t
7146 i;
7147
7148 ssize_t
7149 j;
7150
7151 dx=0.0;
7152 dy=0.0;
7153 for (i=1; i < (ssize_t) number_vertices; i++)
7154 {
7155 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7156 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7157 if ((fabs((double) dx) >= MagickEpsilon) ||
7158 (fabs((double) dy) >= MagickEpsilon))
7159 break;
7160 }
7161 if (i == (ssize_t) number_vertices)
7162 i=(ssize_t) number_vertices-1L;
7163 distance=hypot((double) dx,(double) dy);
7164 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7165 dx*(distance+offset)/distance);
7166 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7167 dy*(distance+offset)/distance);
7168 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7169 {
7170 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7171 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7172 if ((fabs((double) dx) >= MagickEpsilon) ||
7173 (fabs((double) dy) >= MagickEpsilon))
7174 break;
7175 }
7176 distance=hypot((double) dx,(double) dy);
7177 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7178 dx*(distance+offset)/distance);
7179 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7180 dy*(distance+offset)/distance);
7181 return(MagickTrue);
7182}
7183
7184static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7185 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7186{
7187#define MaxStrokePad (6*BezierQuantum+360)
7188#define CheckPathExtent(pad_p,pad_q) \
7189{ \
7190 if ((pad_p) > MaxBezierCoordinates) \
7191 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7192 else \
7193 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7194 { \
7195 if (~extent_p < (pad_p)) \
7196 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7197 else \
7198 { \
7199 extent_p+=(pad_p); \
7200 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7201 MaxStrokePad,sizeof(*stroke_p)); \
7202 } \
7203 } \
7204 if ((pad_q) > MaxBezierCoordinates) \
7205 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7206 else \
7207 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7208 { \
7209 if (~extent_q < (pad_q)) \
7210 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7211 else \
7212 { \
7213 extent_q+=(pad_q); \
7214 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7215 MaxStrokePad,sizeof(*stroke_q)); \
7216 } \
7217 } \
7218 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7219 { \
7220 if (stroke_p != (PointInfo *) NULL) \
7221 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7222 if (stroke_q != (PointInfo *) NULL) \
7223 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7224 polygon_primitive=(PrimitiveInfo *) \
7225 RelinquishMagickMemory(polygon_primitive); \
7226 (void) ThrowMagickException(exception,GetMagickModule(), \
7227 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7228 return((PrimitiveInfo *) NULL); \
7229 } \
7230}
7231
7232 typedef struct _StrokeSegment
7233 {
7234 double
7235 p,
7236 q;
7237 } StrokeSegment;
7238
7239 double
7240 delta_theta,
7241 dot_product,
7242 mid,
7243 miterlimit;
7244
7245 MagickBooleanType
7246 closed_path;
7247
7248 PointInfo
7249 box_p[5],
7250 box_q[5],
7251 center,
7252 offset,
7253 *stroke_p,
7254 *stroke_q;
7255
7256 PrimitiveInfo
7257 *polygon_primitive,
7258 *stroke_polygon;
7259
7260 ssize_t
7261 i;
7262
7263 size_t
7264 arc_segments,
7265 extent_p,
7266 extent_q,
7267 number_vertices;
7268
7269 ssize_t
7270 j,
7271 n,
7272 p,
7273 q;
7274
7275 StrokeSegment
7276 dx = {0.0, 0.0},
7277 dy = {0.0, 0.0},
7278 inverse_slope = {0.0, 0.0},
7279 slope = {0.0, 0.0},
7280 theta = {0.0, 0.0};
7281
7282 /*
7283 Allocate paths.
7284 */
7285 number_vertices=primitive_info->coordinates;
7286 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7287 number_vertices+2UL,sizeof(*polygon_primitive));
7288 if (polygon_primitive == (PrimitiveInfo *) NULL)
7289 {
7290 (void) ThrowMagickException(exception,GetMagickModule(),
7291 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7292 return((PrimitiveInfo *) NULL);
7293 }
7294 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7295 sizeof(*polygon_primitive));
7296 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7297 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7298 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7299 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7300 if ((draw_info->linejoin == MiterJoin) ||
7301 ((draw_info->linejoin == RoundJoin) && (closed_path != MagickFalse)))
7302 {
7303 polygon_primitive[number_vertices]=primitive_info[1];
7304 number_vertices++;
7305 }
7306 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7307 /*
7308 Compute the slope for the first line segment, p.
7309 */
7310 closed_path=primitive_info[0].closed_subpath;
7311 dx.p=0.0;
7312 dy.p=0.0;
7313 for (n=1; n < (ssize_t) number_vertices; n++)
7314 {
7315 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7316 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7317 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7318 break;
7319 }
7320 if (n == (ssize_t) number_vertices)
7321 {
7322 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7323 {
7324 /*
7325 Zero length subpath.
7326 */
7327 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7328 sizeof(*stroke_polygon));
7329 stroke_polygon[0]=polygon_primitive[0];
7330 stroke_polygon[0].coordinates=0;
7331 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7332 polygon_primitive);
7333 return(stroke_polygon);
7334 }
7335 n=(ssize_t) number_vertices-1L;
7336 }
7337 extent_p=2*number_vertices;
7338 extent_q=2*number_vertices;
7339 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7340 sizeof(*stroke_p));
7341 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7342 sizeof(*stroke_q));
7343 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7344 {
7345 if (stroke_p != (PointInfo *) NULL)
7346 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7347 if (stroke_q != (PointInfo *) NULL)
7348 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7349 polygon_primitive=(PrimitiveInfo *)
7350 RelinquishMagickMemory(polygon_primitive);
7351 (void) ThrowMagickException(exception,GetMagickModule(),
7352 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7353 return((PrimitiveInfo *) NULL);
7354 }
7355 slope.p=0.0;
7356 inverse_slope.p=0.0;
7357 if (fabs(dx.p) < MagickEpsilon)
7358 {
7359 if (dx.p >= 0.0)
7360 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7361 else
7362 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7363 }
7364 else
7365 if (fabs(dy.p) < MagickEpsilon)
7366 {
7367 if (dy.p >= 0.0)
7368 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7369 else
7370 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7371 }
7372 else
7373 {
7374 slope.p=dy.p/dx.p;
7375 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7376 }
7377 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7378 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7379 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7380 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7381 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7382 offset.y=(double) (offset.x*inverse_slope.p);
7383 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7384 {
7385 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7386 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7387 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7388 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7389 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7390 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7391 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7392 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7393 }
7394 else
7395 {
7396 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7397 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7398 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7399 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7400 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7401 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7402 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7403 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7404 }
7405 /*
7406 Create strokes for the line join attribute: bevel, miter, round.
7407 */
7408 p=0;
7409 q=0;
7410 stroke_q[p++]=box_q[0];
7411 stroke_p[q++]=box_p[0];
7412 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7413 {
7414 /*
7415 Compute the slope for this line segment, q.
7416 */
7417 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7418 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7419 dot_product=dx.q*dx.q+dy.q*dy.q;
7420 if (dot_product < 0.25)
7421 continue;
7422 slope.q=0.0;
7423 inverse_slope.q=0.0;
7424 if (fabs(dx.q) < MagickEpsilon)
7425 {
7426 if (dx.q >= 0.0)
7427 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7428 else
7429 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7430 }
7431 else
7432 if (fabs(dy.q) < MagickEpsilon)
7433 {
7434 if (dy.q >= 0.0)
7435 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7436 else
7437 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7438 }
7439 else
7440 {
7441 slope.q=dy.q/dx.q;
7442 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7443 }
7444 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7445 offset.y=(double) (offset.x*inverse_slope.q);
7446 dot_product=dy.q*offset.x-dx.q*offset.y;
7447 if (dot_product > 0.0)
7448 {
7449 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7450 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7451 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7452 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7453 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7454 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7455 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7456 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7457 }
7458 else
7459 {
7460 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7461 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7462 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7463 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7464 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7465 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7466 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7467 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7468 }
7469 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7470 {
7471 box_p[4]=box_p[1];
7472 box_q[4]=box_q[1];
7473 }
7474 else
7475 {
7476 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7477 box_p[3].y)/(slope.p-slope.q));
7478 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7479 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7480 box_q[3].y)/(slope.p-slope.q));
7481 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7482 }
7483 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7484 dot_product=dx.q*dy.p-dx.p*dy.q;
7485 if (dot_product <= 0.0)
7486 switch (draw_info->linejoin)
7487 {
7488 case BevelJoin:
7489 {
7490 stroke_q[q++]=box_q[1];
7491 stroke_q[q++]=box_q[2];
7492 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7493 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7494 if (dot_product <= miterlimit)
7495 stroke_p[p++]=box_p[4];
7496 else
7497 {
7498 stroke_p[p++]=box_p[1];
7499 stroke_p[p++]=box_p[2];
7500 }
7501 break;
7502 }
7503 case MiterJoin:
7504 {
7505 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7506 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7507 if (dot_product <= miterlimit)
7508 {
7509 stroke_q[q++]=box_q[4];
7510 stroke_p[p++]=box_p[4];
7511 }
7512 else
7513 {
7514 stroke_q[q++]=box_q[1];
7515 stroke_q[q++]=box_q[2];
7516 stroke_p[p++]=box_p[1];
7517 stroke_p[p++]=box_p[2];
7518 }
7519 break;
7520 }
7521 case RoundJoin:
7522 {
7523 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7524 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7525 if (dot_product <= miterlimit)
7526 stroke_p[p++]=box_p[4];
7527 else
7528 {
7529 stroke_p[p++]=box_p[1];
7530 stroke_p[p++]=box_p[2];
7531 }
7532 center=polygon_primitive[n].point;
7533 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7534 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7535 if (theta.q < theta.p)
7536 theta.q+=2.0*MagickPI;
7537 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7538 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7539 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7540 stroke_q[q].x=box_q[1].x;
7541 stroke_q[q].y=box_q[1].y;
7542 q++;
7543 for (j=1; j < (ssize_t) arc_segments; j++)
7544 {
7545 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7546 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7547 (theta.p+delta_theta),DegreesToRadians(360.0))));
7548 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7549 (theta.p+delta_theta),DegreesToRadians(360.0))));
7550 q++;
7551 }
7552 stroke_q[q++]=box_q[2];
7553 break;
7554 }
7555 default:
7556 break;
7557 }
7558 else
7559 switch (draw_info->linejoin)
7560 {
7561 case BevelJoin:
7562 {
7563 stroke_p[p++]=box_p[1];
7564 stroke_p[p++]=box_p[2];
7565 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7566 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7567 if (dot_product <= miterlimit)
7568 stroke_q[q++]=box_q[4];
7569 else
7570 {
7571 stroke_q[q++]=box_q[1];
7572 stroke_q[q++]=box_q[2];
7573 }
7574 break;
7575 }
7576 case MiterJoin:
7577 {
7578 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7579 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7580 if (dot_product <= miterlimit)
7581 {
7582 stroke_q[q++]=box_q[4];
7583 stroke_p[p++]=box_p[4];
7584 }
7585 else
7586 {
7587 stroke_q[q++]=box_q[1];
7588 stroke_q[q++]=box_q[2];
7589 stroke_p[p++]=box_p[1];
7590 stroke_p[p++]=box_p[2];
7591 }
7592 break;
7593 }
7594 case RoundJoin:
7595 {
7596 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7597 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7598 if (dot_product <= miterlimit)
7599 stroke_q[q++]=box_q[4];
7600 else
7601 {
7602 stroke_q[q++]=box_q[1];
7603 stroke_q[q++]=box_q[2];
7604 }
7605 center=polygon_primitive[n].point;
7606 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7607 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7608 if (theta.p < theta.q)
7609 theta.p+=2.0*MagickPI;
7610 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7611 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7612 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7613 stroke_p[p++]=box_p[1];
7614 for (j=1; j < (ssize_t) arc_segments; j++)
7615 {
7616 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7617 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7618 (theta.p+delta_theta),DegreesToRadians(360.0))));
7619 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7620 (theta.p+delta_theta),DegreesToRadians(360.0))));
7621 p++;
7622 }
7623 stroke_p[p++]=box_p[2];
7624 break;
7625 }
7626 default:
7627 break;
7628 }
7629 slope.p=slope.q;
7630 inverse_slope.p=inverse_slope.q;
7631 box_p[0]=box_p[2];
7632 box_p[1]=box_p[3];
7633 box_q[0]=box_q[2];
7634 box_q[1]=box_q[3];
7635 dx.p=dx.q;
7636 dy.p=dy.q;
7637 n=i;
7638 }
7639 stroke_p[p++]=box_p[1];
7640 stroke_q[q++]=box_q[1];
7641 /*
7642 Trace stroked polygon.
7643 */
7644 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7645 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7646 if (stroke_polygon == (PrimitiveInfo *) NULL)
7647 {
7648 (void) ThrowMagickException(exception,GetMagickModule(),
7649 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7650 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7651 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7652 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7653 polygon_primitive);
7654 return(stroke_polygon);
7655 }
7656 for (i=0; i < (ssize_t) p; i++)
7657 {
7658 stroke_polygon[i]=polygon_primitive[0];
7659 stroke_polygon[i].point=stroke_p[i];
7660 }
7661 if (closed_path != MagickFalse)
7662 {
7663 stroke_polygon[i]=polygon_primitive[0];
7664 stroke_polygon[i].point=stroke_polygon[0].point;
7665 i++;
7666 }
7667 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7668 {
7669 stroke_polygon[i]=polygon_primitive[0];
7670 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7671 }
7672 if (closed_path != MagickFalse)
7673 {
7674 stroke_polygon[i]=polygon_primitive[0];
7675 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7676 i++;
7677 }
7678 stroke_polygon[i]=polygon_primitive[0];
7679 stroke_polygon[i].point=stroke_polygon[0].point;
7680 i++;
7681 stroke_polygon[i].primitive=UndefinedPrimitive;
7682 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7683 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7684 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7685 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7686 return(stroke_polygon);
7687}
_EdgeInfo
Definition draw.c:112
_ElementInfo
Definition draw.c:136
_MVGInfo
Definition draw.c:146
_PathInfo
Definition draw.c:182
_PolygonInfo
Definition draw.c:164