exit(1);
}
- void*md5 = init_md5();
+ void*md5 = initialize_md5();
int s,t;
gfxpolystroke_t*stroke = current_polygon->strokes;
char gfxpoly_check(gfxpoly_t*poly)
{
+ current_polygon = poly;
dict_t*d = dict_new2(&point_type);
int s,t;
gfxpolystroke_t*stroke = poly->strokes;
for(;stroke;stroke=stroke->next) {
+ /* In order to not confuse the fill/wind logic, existing segments must have
+ a non-zero edge style */
+ assert(stroke->fs);
+
+ /* put all the segments into dictionaries so that we can check
+ that the endpoint multiplicity is two */
for(s=0;s<stroke->num_points;s++) {
point_t p = stroke->points[s];
int num = (s>=1 && s<stroke->num_points-1)?2:1; // mid points are two points (start+end)
DICT_ITERATE_ITEMS(d, point_t*, p, void*, c) {
int count = (ptroff_t)c;
if(count&1) {
- fprintf(stderr, "Point (%f,%f) occurs %d times\n", p->x*poly->gridsize, p->y*poly->gridsize, count);
+ fprintf(stderr, "Point (%d,%d) occurs %d times\n", p->x, p->y, count);
dict_destroy(d);
- return 0;
+ assert(count%2 == 0);
}
}
dict_destroy(d);
{
int s,t;
double g = poly->gridsize;
- fprintf(stderr, "polyon %08x (gridsize: %f)\n", poly, poly->gridsize);
+ fprintf(stderr, "polyon %p (gridsize: %f)\n", poly, poly->gridsize);
gfxpolystroke_t*stroke = poly->strokes;
for(;stroke;stroke=stroke->next) {
- fprintf(stderr, "%08x", stroke);
- for(s=0;s<stroke->num_points-1;s++) {
- point_t a = stroke->points[s];
- point_t b = stroke->points[s+1];
- fprintf(stderr, "%s (%f,%f) -> (%f,%f)%s\n", s?" ":"", a.x*g, a.y*g, b.x*g, b.y*g,
- s==stroke->num_points-2?"]":"");
+ fprintf(stderr, "%11p", stroke);
+ if(stroke->dir==DIR_UP) {
+ for(s=stroke->num_points-1;s>=1;s--) {
+ point_t a = stroke->points[s];
+ point_t b = stroke->points[s-1];
+ fprintf(stderr, "%s (%f,%f) -> (%f,%f)%s%s\n", s!=stroke->num_points-1?" ":"", a.x*g, a.y*g, b.x*g, b.y*g,
+ s==1?"]":"", a.y==b.y?"H":"");
+ }
+ } else {
+ for(s=0;s<stroke->num_points-1;s++) {
+ point_t a = stroke->points[s];
+ point_t b = stroke->points[s+1];
+ fprintf(stderr, "%s (%f,%f) -> (%f,%f)%s%s\n", s?" ":"", a.x*g, a.y*g, b.x*g, b.y*g,
+ s==stroke->num_points-2?"]":"", a.y==b.y?"H":"");
+ }
}
}
}
fclose(fi);
}
+void gfxpoly_save_arrows(gfxpoly_t*poly, const char*filename)
+{
+ FILE*fi = fopen(filename, "wb");
+ fprintf(fi, "%% gridsize %f\n", poly->gridsize);
+ fprintf(fi, "%% begin\n");
+ int t;
+ double l = 5.0 / poly->gridsize;
+ double g = poly->gridsize;
+ gfxpolystroke_t*stroke = poly->strokes;
+ for(;stroke;stroke=stroke->next) {
+ fprintf(fi, "%g setgray\n", 0);
+
+ int s = stroke->dir==DIR_UP?stroke->num_points-1:0;
+ int end = stroke->dir==DIR_UP?-1:stroke->num_points;
+ int dir = stroke->dir==DIR_UP?-1:1;
+
+ point_t p = stroke->points[s];
+ s+=dir;
+ point_t o = p;
+ fprintf(fi, "%f %f moveto\n", p.x * g, p.y * g);
+ for(;s!=end;s+=dir) {
+ p = stroke->points[s];
+ int lx = p.x - o.x;
+ int ly = p.y - o.y;
+ double d = sqrt(lx*lx+ly*ly);
+ if(!d) d=1;
+ else d = l / d;
+ double d2 = d*1.5;
+ fprintf(fi, "%f %f lineto\n", (p.x - lx*d2) * g, (p.y - ly*d2) * g);
+ fprintf(fi, "%f %f lineto\n", (p.x - lx*d2 + (ly*d))*g,
+ (p.y - ly*d2 - (lx*d))*g);
+ fprintf(fi, "%f %f lineto\n", p.x * g, p.y * g);
+ fprintf(fi, "%f %f lineto\n", (p.x - lx*d2 - (ly*d))*g,
+ (p.y - ly*d2 + (lx*d))*g);
+ fprintf(fi, "%f %f lineto\n", (p.x - lx*d2) * g, (p.y - ly*d2) * g);
+ fprintf(fi, "%f %f moveto\n", p.x * g, p.y * g);
+ o = p;
+ }
+ fprintf(fi, "stroke\n");
+ }
+ fprintf(fi, "showpage\n");
+ fclose(fi);
+}
+
inline static event_t* event_new()
{
event_t*e = rfx_calloc(sizeof(event_t));
static void event_dump(event_t*e)
{
if(e->type == EVENT_HORIZONTAL) {
- fprintf(stderr, "Horizontal [%d] (%d,%d) -> (%d,%d)\n", e->s1->nr, e->s1->a.x, e->s1->a.y, e->s1->b.x, e->s1->b.y);
+ fprintf(stderr, "Horizontal [%d] (%d,%d) -> (%d,%d)\n", (int)e->s1->nr, e->s1->a.x, e->s1->a.y, e->s1->b.x, e->s1->b.y);
} else if(e->type == EVENT_START) {
- fprintf(stderr, "event: segment [%d] starts at (%d,%d)\n", e->s1->nr, e->p.x, e->p.y);
+ fprintf(stderr, "event: segment [%d] starts at (%d,%d)\n", (int)e->s1->nr, e->p.x, e->p.y);
} else if(e->type == EVENT_END) {
- fprintf(stderr, "event: segment [%d] ends at (%d,%d)\n", e->s1->nr, e->p.x, e->p.y);
+ fprintf(stderr, "event: segment [%d] ends at (%d,%d)\n", (int)e->s1->nr, e->p.x, e->p.y);
} else if(e->type == EVENT_CROSS) {
- fprintf(stderr, "event: segment [%d] and [%d] intersect at (%d,%d)\n", e->s1->nr, e->s2->nr, e->p.x, e->p.y);
+ fprintf(stderr, "event: segment [%d] and [%d] intersect at (%d,%d)\n", (int)e->s1->nr, (int)e->s2->nr, e->p.x, e->p.y);
} else {
assert(0);
}
}
-static inline max32(int32_t v1, int32_t v2) {return v1>v2?v1:v2;}
-static inline min32(int32_t v1, int32_t v2) {return v1<v2?v1:v2;}
+static inline int32_t max32(int32_t v1, int32_t v2) {return v1>v2?v1:v2;}
+static inline int32_t min32(int32_t v1, int32_t v2) {return v1<v2?v1:v2;}
static void segment_dump(segment_t*s)
{
- fprintf(stderr, "[%d] (%d,%d)->(%d,%d) ", s->nr, s->a.x, s->a.y, s->b.x, s->b.y);
- fprintf(stderr, " dx:%d dy:%d k:%f dx/dy=%f\n", s->delta.x, s->delta.y, s->k,
- (double)s->delta.x / s->delta.y);
+ fprintf(stderr, "[%d] (%d,%d)->(%d,%d) ", (int)s->nr, s->a.x, s->a.y, s->b.x, s->b.y);
+ fprintf(stderr, " dx:%d dy:%d k:%f dx/dy=%f fs=%p\n", s->delta.x, s->delta.y, s->k,
+ (double)s->delta.x / s->delta.y, s->fs);
}
static void segment_init(segment_t*s, int32_t x1, int32_t y1, int32_t x2, int32_t y2, int polygon_nr, segment_dir_t dir)
s->nr = segment_count++;
#ifdef CHECKS
+ /* notice: on some systems (with some compilers), for the line
+ (1073741823,-1073741824)->(1073741823,1073741823)
+ we get LINE_EQ(s->a, s) == 1.
+ That's why we now clamp to 26 bit.
+ */
assert(LINE_EQ(s->a, s) == 0);
assert(LINE_EQ(s->b, s) == 0);
while(pos < stroke->num_points-1) {
assert(stroke->points[pos].y <= stroke->points[pos+1].y);
s = segment_new(stroke->points[pos], stroke->points[pos+1], polygon_nr, stroke->dir);
+ s->fs = stroke->fs;
pos++;
s->stroke = 0;
s->stroke_pos = 0;
#ifdef DEBUG
/*if(l->tmp)
s->nr = l->tmp;*/
- fprintf(stderr, "[%d] (%d,%d) -> (%d,%d) %s (stroke %08x, %d more to come)\n",
+ fprintf(stderr, "[%d] (%d,%d) -> (%d,%d) %s (stroke %p, %d more to come)\n",
s->nr, s->a.x, s->a.y, s->b.x, s->b.y,
s->dir==DIR_UP?"up":"down", stroke, stroke->num_points - 1 - pos);
#endif
fprintf(stderr, "[%d] receives next point (%d,%d)->(%d,%d) (drawing)\n", s->nr,
s->pos.x, s->pos.y, p.x, p.y);
#endif
- /* XXX we probably will never output circular/anticircular polygons, but if
- we do, we would need to set the segment direction here */
- fillstyle_t*fs = s->fs_out;
+ edgestyle_t*fs = s->fs_out;
+ segment_dir_t dir = s->wind.is_filled?DIR_DOWN:DIR_UP;
// omit horizontal lines
if(s->pos.y != p.y) {
assert(a.y != b.y);
gfxpolystroke_t*stroke = status->strokes;
+ /* find a stoke to attach this segment to. It has to have an endpoint
+ matching our start point, and a matching edgestyle */
while(stroke) {
point_t p = stroke->points[stroke->num_points-1];
- if(p.x == a.x && p.y == a.y && stroke->fs == fs)
+ if(p.x == a.x && p.y == a.y && stroke->fs == fs && stroke->dir == dir)
break;
stroke = stroke->next;
}
if(!stroke) {
stroke = rfx_calloc(sizeof(gfxpolystroke_t));
- stroke->dir = DIR_DOWN;
+ stroke->dir = dir;
stroke->fs = fs;
stroke->next = status->strokes;
status->strokes = stroke;
stroke->points[0] = a;
stroke->num_points = 1;
} else if(stroke->num_points == stroke->points_size) {
+ assert(stroke->fs);
stroke->points_size *= 2;
stroke->points = rfx_realloc(stroke->points, sizeof(point_t)*stroke->points_size);
}
s = range->segmin;
#endif
#ifdef CHECKS
- /* test sanity: check that we don't have changed segments
+ /* test sanity: verify that we don't have changed segments
outside of the given range */
s = actlist_leftmost(status->actlist);
while(s && s!=range->segmin) {
s = s->left;
}
/* in check mode, go through the whole interval so we can test
- that all polygons where the fillstyle changed also have seg->changed=1 */
+ that all polygons where the edgestyle changed also have seg->changed=1 */
s = actlist_leftmost(status->actlist);
end = 0;
#endif
segment_t* left = actlist_left(status->actlist, s);
windstate_t wind = left?left->wind:status->windrule->start(status->context);
s->wind = status->windrule->add(status->context, wind, s->fs, s->dir, s->polygon_nr);
- fillstyle_t*fs_old = s->fs_out;
+ edgestyle_t*fs_old = s->fs_out;
s->fs_out = status->windrule->diff(&wind, &s->wind);
#ifdef DEBUG
s->pos.y != s->b.y) &&
!dict_contains(status->segs_with_point, s)) {
fprintf(stderr, "Error: segment [%d] (%sslope) intersects in scanline %d, but it didn't receive a point\n",
- s->nr,
+ SEGNR(s),
s->delta.x<0?"-":"+",
status->y);
assert(0);
while(e) {
int32_t y = e->p.y;
int32_t x = 0;
- char fill = 0;
#ifdef DEBUG
fprintf(stderr, "HORIZONTALS ----------------------------------- %d\n", y);
actlist_dump(actlist, y-1);
#ifdef CHECKS
actlist_verify(actlist, y-1);
#endif
+ edgestyle_t*fill = 0;
+ int dir_up = 0;
+ int dir_down = 0;
+
do {
+ assert(e->s1->fs);
if(fill && x != e->p.x) {
#ifdef DEBUG
fprintf(stderr, "%d) draw horizontal line from %d to %d\n", y, x, e->p.x);
#endif
assert(x<e->p.x);
+ assert(dir_up || dir_down);
gfxpolystroke_t*stroke = rfx_calloc(sizeof(gfxpolystroke_t));
stroke->next = poly->strokes;
stroke->num_points = 2;
stroke->points = malloc(sizeof(point_t)*2);
- stroke->dir = DIR_UP; // FIXME
- stroke->fs = 0;
+ if(dir_up < 0 || dir_down > 0) {
+ stroke->dir = DIR_UP;
+ } else {
+ stroke->dir = DIR_DOWN;
+ }
+
+ stroke->fs = fill;
point_t a,b;
a.y = b.y = y;
/* we draw from low x to high x so that left/right fillstyles add up
stroke->points[1] = b;
#ifdef CHECKS
/* the output should always be intersection free polygons, so check this horizontal
- line isn't hacking through any segments in the active list */
+ line isn't puncturing any segments in the active list */
segment_t* start = actlist_find(actlist, b, b);
segment_t* s = actlist_find(actlist, a, a);
while(s!=start) {
}
#endif
}
+
+ segment_t*s = e->s1;
+
segment_t*left = 0;
- segment_t*s = e->s1;
-
switch(e->type) {
case EVENT_START: {
assert(e->p.x == s->a.x && e->p.y == s->a.y);
e->s2 = 0;
hqueue_put(&hqueue, e);
left = actlist_left(actlist, s);
+ dir_down += e->s1->dir==DIR_UP?1:-1;
break;
}
case EVENT_END: {
left = actlist_left(actlist, s);
actlist_delete(actlist, s);
advance_stroke(0, &hqueue, s->stroke, s->polygon_nr, s->stroke_pos);
+ dir_up += e->s1->dir==DIR_UP?1:-1;
break;
}
default: assert(0);
}
x = e->p.x;
- fill ^= 1;//(before.is_filled != after.is_filled);
+
+ fill = fill?0:&edgestyle_default;
+#if 0
+ if(windrule==&windrule_evenodd) {
+ if(!!fill != !!fill2) {
+ segment_dump(s);
+ event_dump(e);
+ printf("at y=%d x=%d (hline:%p)\n", e->p.y, x, old_fill);
+ if(e->type==EVENT_END) {
+ printf(" %9p\n", s->fs);
+ printf(" |\n");
+ }
+ printf(" %3d %c%2d \n", before1.is_filled, e->type==EVENT_END?'|':' ', after1.is_filled);
+ printf("%12p -----+----- %p\n", old_fill, fill2);
+ printf(" %3d %c%2d \n", before2.is_filled, e->type==EVENT_START?'|':' ', after2.is_filled);
+ if(e->type==EVENT_START) {
+ printf(" |\n");
+ printf(" %9p\n", s->fs);
+ }
+ }
+ assert(!!fill == !!fill2);
+ }
+#endif
+
#ifdef DEBUG
fprintf(stderr, "%d) event=%s[%d] left:[%d] x:%d\n",
y, e->type==EVENT_START?"start":"end",
} while(e && y == e->p.y);
#ifdef CHECKS
- char bleeding = fill;
+ edgestyle_t*bleeding = fill;
assert(!bleeding);
#endif
}
event_t*e = queue_get(&status.queue);
while(e) {
+ assert(e->s1->fs);
status.y = e->p.y;
#ifdef CHECKS
assert(status.y>=lasty);
p->gridsize = poly1->gridsize;
p->strokes = status.strokes;
+#ifdef CHECKS
+ /* we only add segments with non-empty edgestyles to strokes in
+ recalculate_windings, but better safe than sorry */
+ gfxpolystroke_t*stroke = p->strokes;
+ while(stroke) {
+ assert(stroke->fs);
+ stroke = stroke->next;
+ }
+#endif
+
add_horizontals(p, &windrule_evenodd, context); // output is always even/odd
+ //add_horizontals(p, windrule, context);
return p;
}
git.asbjorn.biz / swftools.git / blobdiff