#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;
gfxdevice_t*out;
clip_t*clip;
gfxpoly_t*polyunion;
+
+ int good_polygons;
+ int bad_polygons;
} internal_t;
static int verbose = 0;
int l;
va_list arglist;
va_start(arglist, format);
- vsprintf(buf, format, arglist);
+ vsnprintf(buf, sizeof(buf)-1, format, arglist);
va_end(arglist);
l = strlen(buf);
while(l && buf[l-1]=='\n') {
dbg("polyops_startclip");
internal_t*i = (internal_t*)dev->internal;
- gfxpoly_t* poly = gfxpoly_fillToPoly(line);
-
- 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;
+ gfxpoly_t* oldclip = i->clip?i->clip->poly:0;
+ gfxpoly_t* poly = gfxpoly_from_fill(line, DEFAULT_GRID);
+ if(poly)
+ i->good_polygons++;
+ else
+ i->bad_polygons++;
+
+ 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 go awry */
+ if(!poly && !oldclip) {
+ i->out->startclip(i->out,line);
+ currentclip = 0;
+ type = 1;
+ } else if(!poly && oldclip) {
+ gfxline_t*oldclipline = gfxline_from_gfxpoly(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) {
+ i->good_polygons++;
+ // this case is what usually happens
+ gfxpoly_destroy(poly);poly=0;
+ currentclip = intersection;
+ type = 0;
+ } else {
+ i->bad_polygons++;
+ gfxline_t*oldclipline = gfxline_from_gfxpoly(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;
}
void polyops_endclip(struct _gfxdevice*dev)
dbg("polyops_endclip");
internal_t*i = (internal_t*)dev->internal;
- 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");
+ 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) {
+ gfxpoly_destroy(old->poly);old->poly = 0;
}
+ 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(i->polyunion) {
+ if(poly && i->polyunion) {
gfxpoly_t*old = i->polyunion;
- i->polyunion = gfxpoly_union(poly,i->polyunion);
- gfxpoly_free(old);
+ gfxpoly_t*newpoly = gfxpoly_union(poly,i->polyunion);
+ i->polyunion = newpoly;
+ gfxpoly_destroy(old);
}
}
-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)
+static gfxline_t* handle_poly(gfxdevice_t*dev, gfxpoly_t*poly, char*ok)
{
- 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);
- if(i->clip) {
+ if(i->clip && i->clip->poly) {
gfxpoly_t*old = poly;
- poly = gfxpoly_intersect(poly, i->clip->poly);
- gfxpoly_free(old);
+ if(poly) {
+ poly = gfxpoly_intersect(poly, i->clip->poly);
+ gfxpoly_destroy(old);
+ }
}
+
+ if(poly)
+ i->good_polygons++;
+ else
+ i->bad_polygons++;
+
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);
+ gfxline_t*gfxline = 0;
+ if(poly) {
+ // this is the case where everything went right
+ gfxline_t*line = gfxline_from_gfxpoly(poly);
+ gfxpoly_destroy(poly);
+ *ok = 1;
+ 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 = gfxline_from_gfxpoly(i->clip->poly);
+ i->out->startclip(i->out, clipline);
+ gfxline_free(clipline);
+ gfxpoly_destroy(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;
+
+ gfxpoly_t* poly = gfxpoly_from_stroke(line, width, cap_style, joint_style, miterLimit, DEFAULT_GRID);
+ char ok = 0;
+ gfxline_t*line2 = handle_poly(dev, poly, &ok);
+
+ if(ok) {
+ if(i->out && line2) i->out->fill(i->out, line2, color);
+ gfxline_free(line2);
+ } else {
+ msg("<error> ..");
+ if(i->out) i->out->stroke(i->out, line, width, color, cap_style, joint_style, miterLimit);
+ }
}
void polyops_fill(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color)
dbg("polyops_fill");
internal_t*i = (internal_t*)dev->internal;
- gfxpoly_t*poly = gfxpoly_fillToPoly(line);
+ gfxpoly_t*poly = gfxpoly_from_fill(line, DEFAULT_GRID);
+ char ok = 0;
+ gfxline_t*line2 = handle_poly(dev, poly, &ok);
- if(i->clip) {
- gfxpoly_t*old = poly;
- poly = gfxpoly_intersect(poly, i->clip->poly);
- gfxpoly_free(poly);
+ if(ok) {
+ if(i->out && line2) i->out->fill(i->out, line2, color);
+ gfxline_free(line2);
+ } else {
+ if(i->out) i->out->fill(i->out, line, color);
}
- 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);
+
+ gfxpoly_t*poly = gfxpoly_from_fill(line, DEFAULT_GRID);
+ char ok = 0;
+ gfxline_t*line2 = handle_poly(dev, poly, &ok);
- if(i->clip) {
- gfxpoly_t*old = poly;
- poly = gfxpoly_intersect(poly, i->clip->poly);
- gfxpoly_free(old);
+ if(ok) {
+ if(i->out && line2) 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);
}
- 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);
- if(i->clip) {
- gfxpoly_t*old = poly;
- poly = gfxpoly_intersect(poly, i->clip->poly);
- gfxpoly_free(old);
+
+ gfxpoly_t*poly = gfxpoly_from_fill(line, DEFAULT_GRID);
+ char ok = 0;
+ gfxline_t*line2 = handle_poly(dev, poly, &ok);
+
+ if(ok) {
+ if(i->out && line2) 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);
}
- 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) {
+ if(i->clip && i->clip->poly) {
gfxbbox_t bbox = gfxline_getbbox(glyph);
- gfxpoly_t*dummybox = gfxpoly_createbox(bbox.xmin,bbox.ymin,bbox.xmax,bbox.ymax);
- 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);
+ gfxpoly_t*dummybox = gfxpoly_createbox(bbox.xmin,bbox.ymin,bbox.xmax,bbox.ymax, DEFAULT_GRID);
+
+ char ok=0;
+ gfxline_t*gfxline = handle_poly(dev, dummybox, &ok);
+ if(ok) {
+ 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);
+ }
} else {
if(i->out) i->out->drawchar(i->out, font, glyphnr, color, matrix);
}
{
dbg("polyops_finish");
internal_t*i = (internal_t*)dev->internal;
+
+
+ if(i->polyunion) {
+ gfxpoly_destroy(i->polyunion);i->polyunion=0;
+ } else {
+ if(i->bad_polygons) {
+ msg("<notice> --flatten success rate: %.1f%% (%d failed polygons)", i->good_polygons*100.0 / (i->good_polygons + i->bad_polygons), i->bad_polygons);
+ }
+ }
if(i->out) {
return i->out->finish(i->out);
} else {
gfxline_t*gfxdevice_union_getunion(struct _gfxdevice*dev)
{
internal_t*i = (internal_t*)dev->internal;
- return gfxpoly_to_gfxline(i->polyunion);
+ return gfxline_from_gfxpoly(i->polyunion);
}
void gfxdevice_removeclippings_init(gfxdevice_t*dev, gfxdevice_t*out)
dev->finish = polyops_finish;
i->out = out;
- i->polyunion = gfxpoly_strokeToPoly(0, 0, gfx_capButt, gfx_joinMiter, 0);
+ /* create empty polygon */
+ i->polyunion = gfxpoly_from_stroke(0, 0, gfx_capButt, gfx_joinMiter, 0, DEFAULT_GRID);
}
git.asbjorn.biz / swftools.git / blobdiff