#include <unistd.h>
#endif
#include <memory.h>
-#include <assert.h>
#include <string.h>
#include <math.h>
#include "../mem.h"
#include "../gfxdevice.h"
#include "../gfxtools.h"
#include "../gfxpoly.h"
-#include "../log.h"
#include "polyops.h"
typedef struct _clip {
gfxpoly_t*poly;
- int openclips;
struct _clip*next;
} clip_t;
dbg("polyops_startclip");
internal_t*i = (internal_t*)dev->internal;
- gfxpoly_t* oldclip = i->clip?i->clip->poly:0;
gfxpoly_t* poly = gfxpoly_fillToPoly(line);
- gfxpoly_t* currentclip = 0;
- int type = 0;
-
- /* we can't rely on gfxpoly actually being able to convert
- a gfxline into a gfxpoly- for polygons which are too
- complex or just degenerate, this might fail. So handle
- all the cases where polygon conversion or intersection
- might fail */
- if(!poly && !oldclip) {
- i->out->startclip(i->out,line);
- currentclip = 0;
- type = 1;
- } else if(!poly && oldclip) {
- gfxline_t*oldclipline = gfxpoly_to_gfxline(oldclip);
- i->out->startclip(i->out,oldclipline);
- i->out->startclip(i->out,line);
- currentclip = 0;
- type = 2;
- } else if(poly && oldclip) {
- gfxpoly_t*intersection = gfxpoly_intersect(poly, oldclip);
- if(intersection) {
- // this case is what usually happens
- gfxpoly_free(poly);poly=0;
- currentclip = intersection;
- type = 0;
- } else {
- gfxline_t*oldclipline = gfxpoly_to_gfxline(oldclip);
- i->out->startclip(i->out, oldclipline);
- currentclip = poly;
- type = 1;
- }
- } else if(poly && !oldclip) {
- currentclip = poly;
- type = 0;
- }
- clip_t*n = i->clip;
- i->clip = (clip_t*)rfx_calloc(sizeof(clip_t));
- i->clip->next = n;
- i->clip->poly = currentclip;
- i->clip->openclips = type;
+ if(i->clip) {
+ gfxpoly_t*old = i->clip->poly;
+ clip_t*n = i->clip;
+ i->clip = (clip_t*)rfx_calloc(sizeof(clip_t));
+ i->clip->next = n;
+ i->clip->poly = gfxpoly_intersect(poly, old);
+ gfxpoly_free(poly);
+ } else {
+ i->clip = (clip_t*)rfx_calloc(sizeof(clip_t));
+ i->clip->poly = poly;
+ }
}
void polyops_endclip(struct _gfxdevice*dev)
dbg("polyops_endclip");
internal_t*i = (internal_t*)dev->internal;
- if(!i->clip) {
- msg("<error> endclip without startclip (in: polyops)\n");
- return;
- }
-
- clip_t*old = i->clip;
- i->clip = i->clip->next;
- if(old->poly) {
+ if(i->clip) {
+ clip_t*old = i->clip;
+ i->clip = i->clip->next;
gfxpoly_free(old->poly);old->poly = 0;
+ old->next = 0;free(old);
+ } else {
+ fprintf(stderr, "Error: endclip without startclip\n");
}
- int t;
- for(t=0;t<old->openclips;t++)
- i->out->endclip(i->out);
-
- old->next = 0;free(old);
}
static void addtounion(struct _gfxdevice*dev, gfxpoly_t*poly)
{
internal_t*i = (internal_t*)dev->internal;
- if(poly && i->polyunion) {
+ if(i->polyunion) {
gfxpoly_t*old = i->polyunion;
- gfxpoly_t*newpoly = gfxpoly_union(poly,i->polyunion);
- i->polyunion = newpoly;
+ i->polyunion = gfxpoly_union(poly,i->polyunion);
gfxpoly_free(old);
}
}
-gfxline_t* handle_poly(gfxdevice_t*dev, gfxpoly_t*poly)
-{
- internal_t*i = (internal_t*)dev->internal;
- if(i->clip && i->clip->poly) {
- gfxpoly_t*old = poly;
- if(poly) {
- poly = gfxpoly_intersect(poly, i->clip->poly);
- gfxpoly_free(old);
- }
- }
- addtounion(dev, poly);
- gfxline_t*gfxline = 0;
- if(poly) {
- // this is the case where everything went right
- gfxline_t*line = gfxpoly_to_gfxline(poly);
- gfxpoly_free(poly);
- return line;
- } else {
- if(i->clip && i->clip->poly) {
- /* convert current clipping from a polygon to an
- actual "startclip" written to the output */
- assert(i->clip->openclips <= 1);
- gfxline_t*clipline = gfxpoly_to_gfxline(i->clip->poly);
- i->out->startclip(i->out, clipline);
- gfxline_free(clipline);
- gfxpoly_free(i->clip->poly);i->clip->poly = 0;
- i->clip->openclips++;
- return 0;
- } else {
- return 0;
- }
- }
-}
-
void polyops_stroke(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit)
{
dbg("polyops_stroke");
internal_t*i = (internal_t*)dev->internal;
-
+ //i->out->stroke(i->out, line, width, color, cap_style, joint_style, miterLimit);
gfxpoly_t* poly = gfxpoly_strokeToPoly(line, width, cap_style, joint_style, miterLimit);
- gfxline_t*line2 = handle_poly(dev, poly);
-
- if(line2) {
- if(i->out) i->out->fill(i->out, line2, color);
- gfxline_free(line2);
- } else {
- if(i->out) i->out->stroke(i->out, line, width, color, cap_style, joint_style, miterLimit);
+ if(i->clip) {
+ gfxpoly_t*old = poly;
+ poly = gfxpoly_intersect(poly, i->clip->poly);
+ gfxpoly_free(old);
}
+ addtounion(dev, poly);
+ gfxline_t*gfxline = gfxpoly_to_gfxline(poly);
+ if(i->out) i->out->fill(i->out, gfxline, color);
+ gfxline_free(gfxline);
+ gfxpoly_free(poly);
}
void polyops_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
internal_t*i = (internal_t*)dev->internal;
gfxpoly_t*poly = gfxpoly_fillToPoly(line);
- gfxline_t*line2 = handle_poly(dev, poly);
- if(line2) {
- if(i->out) i->out->fill(i->out, line2, color);
- gfxline_free(line2);
- } else {
- if(i->out) i->out->fill(i->out, line, color);
+ if(i->clip) {
+ gfxpoly_t*old = poly;
+ poly = gfxpoly_intersect(poly, i->clip->poly);
+ gfxpoly_free(old);
}
+ addtounion(dev,poly);
+ gfxline_t*gfxline = gfxpoly_to_gfxline(poly);
+ if(i->out) i->out->fill(i->out, gfxline, color);
+ gfxline_free(gfxline);
+ gfxpoly_free(poly);
}
void polyops_fillbitmap(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*matrix, gfxcxform_t*cxform)
{
dbg("polyops_fillbitmap");
internal_t*i = (internal_t*)dev->internal;
-
- gfxpoly_t*poly = gfxpoly_fillToPoly(line);
- gfxline_t*line2 = handle_poly(dev, poly);
+ gfxpoly_t* poly = gfxpoly_fillToPoly(line);
- if(line2) {
- if(i->out) i->out->fillbitmap(i->out, line2, img, matrix, cxform);
- gfxline_free(line2);
- } else {
- if(i->out) i->out->fillbitmap(i->out, line, img, matrix, cxform);
+ if(i->clip) {
+ gfxpoly_t*old = poly;
+ poly = gfxpoly_intersect(poly, i->clip->poly);
+ gfxpoly_free(old);
}
+ addtounion(dev,poly);
+ gfxline_t*gfxline = gfxpoly_to_gfxline(poly);
+ if(i->out) i->out->fillbitmap(i->out, gfxline, img, matrix, cxform);
+ gfxline_free(gfxline);
+ gfxpoly_free(poly);
}
void polyops_fillgradient(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*matrix)
{
dbg("polyops_fillgradient");
internal_t*i = (internal_t*)dev->internal;
-
- gfxpoly_t*poly = gfxpoly_fillToPoly(line);
- gfxline_t*line2 = handle_poly(dev, poly);
-
- if(line2) {
- if(i->out) i->out->fillgradient(i->out, line2, gradient, type, matrix);
- gfxline_free(line2);
- } else {
- if(i->out) i->out->fillgradient(i->out, line, gradient, type, matrix);
+ gfxpoly_t* poly = gfxpoly_fillToPoly(line);
+ if(i->clip) {
+ gfxpoly_t*old = poly;
+ poly = gfxpoly_intersect(poly, i->clip->poly);
+ gfxpoly_free(old);
}
+ addtounion(dev,poly);
+ gfxline_t*gfxline = gfxpoly_to_gfxline(poly);
+ if(i->out) i->out->fillgradient(i->out, gfxline, gradient, type, matrix);
+ gfxline_free(gfxline);
+ gfxpoly_free(poly);
}
void polyops_addfont(struct _gfxdevice*dev, gfxfont_t*font)
gfxline_t*glyph = gfxline_clone(font->glyphs[glyphnr].line);
gfxline_transform(glyph, matrix);
- if(i->clip && i->clip->poly) {
+ if(i->clip) {
gfxbbox_t bbox = gfxline_getbbox(glyph);
gfxpoly_t*dummybox = gfxpoly_createbox(bbox.xmin,bbox.ymin,bbox.xmax,bbox.ymax);
-
- gfxline_t*gfxline = handle_poly(dev, dummybox);
- if(gfxline) {
- gfxbbox_t bbox2 = gfxline_getbbox(gfxline);
- double w = bbox2.xmax - bbox2.xmin;
- double h = bbox2.ymax - bbox2.ymin;
- if(w < 0.001 || h < 0.001) /* character was clipped completely */ {
- } else if(fabs((bbox.xmax - bbox.xmin) - w) > 0.05 ||
- fabs((bbox.ymax - bbox.ymin) - h) > 0.05) {
- /* notable change in character size: character was clipped
- TODO: how to deal with diagonal cuts?
- */
- polyops_fill(dev, glyph, color);
- } else {
- if(i->out) i->out->drawchar(i->out, font, glyphnr, color, matrix);
- }
+ gfxpoly_t*poly = gfxpoly_intersect(dummybox, i->clip->poly);
+ gfxline_t*gfxline = gfxpoly_to_gfxline(poly);
+ gfxbbox_t bbox2 = gfxline_getbbox(gfxline);
+ double w = bbox2.xmax - bbox2.xmin;
+ double h = bbox2.ymax - bbox2.ymin;
+
+ addtounion(dev, poly); // TODO: use the whole char, not just the bbox?
+
+ if(w < 0.001 || h < 0.001) /* character was clipped completely */ {
+ } else if(fabs((bbox.xmax - bbox.xmin) - w) > 0.05 ||
+ fabs((bbox.ymax - bbox.ymin) - h) > 0.05) {
+ /* notable change in character size: character was clipped
+ TODO: handle diagonal cuts
+ */
+ polyops_fill(dev, glyph, color);
} else {
if(i->out) i->out->drawchar(i->out, font, glyphnr, color, matrix);
}
git.asbjorn.biz / swftools.git / blobdiff