return edges;
}
-char gfxpoly_check(gfxpoly_t*poly)
+char gfxpoly_check(gfxpoly_t*poly, char updown)
{
current_polygon = poly;
- dict_t*d = dict_new2(&point_type);
+ dict_t*d1 = dict_new2(&point_type);
+ dict_t*d2 = 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)
- if(!dict_contains(d, &p)) {
- dict_put(d, &p, (void*)(ptroff_t)num);
+ int num_xor = (s>=1 && s<stroke->num_points-1)?2:1; // mid points are two points (start+end)
+ int num_circ = (s>=1 && s<stroke->num_points-1)?0:(s==0?1:-1);
+ if(stroke->dir==DIR_UP)
+ num_circ=-num_circ;
+
+ if(!dict_contains(d1, &p)) {
+ dict_put(d1, &p, (void*)(ptroff_t)num_xor);
+ if(updown) {
+ assert(!dict_contains(d2, &p));
+ dict_put(d2, &p, (void*)(ptroff_t)num_circ);
+ }
} else {
- int count = (ptroff_t)dict_lookup(d, &p);
- dict_del(d, &p);
- count+=num;
- dict_put(d, &p, (void*)(ptroff_t)count);
+ int count = (ptroff_t)dict_lookup(d1, &p);
+ dict_del(d1, &p);
+ count+=num_xor;
+ dict_put(d1, &p, (void*)(ptroff_t)count);
+
+ if(updown) {
+ assert(dict_contains(d2, &p));
+ count = (ptroff_t)dict_lookup(d2, &p);
+ dict_del(d2, &p);
+ count+=num_circ;
+ dict_put(d2, &p, (void*)(ptroff_t)count);
+ }
}
}
}
- DICT_ITERATE_ITEMS(d, point_t*, p, void*, c) {
- int count = (ptroff_t)c;
+ DICT_ITERATE_ITEMS(d1, point_t*, p1, void*, c1) {
+ int count = (ptroff_t)c1;
if(count&1) {
- fprintf(stderr, "Point (%f,%f) occurs %d times\n", p->x*poly->gridsize, p->y*poly->gridsize, count);
- dict_destroy(d);
- return 0;
+ fprintf(stderr, "Point (%d,%d) occurs %d times\n", p1->x, p1->y, count);
+ dict_destroy(d1);
+ return 0;
}
}
- dict_destroy(d);
+ if(updown) {
+ DICT_ITERATE_ITEMS(d2, point_t*, p2, void*, c2) {
+ int count = (ptroff_t)c2;
+ if(count!=0) {
+ if(count>0) fprintf(stderr, "Point (%d,%d) has %d more incoming than outgoing segments\n", p2->x, p2->y, count);
+ if(count<0) fprintf(stderr, "Point (%d,%d) has %d more outgoing than incoming segments\n", p2->x, p2->y, -count);
+ dict_destroy(d2);
+ return 0;
+ }
+ }
+ }
+ dict_destroy(d1);
+ dict_destroy(d2);
return 1;
}
{
int s,t;
double g = poly->gridsize;
- fprintf(stderr, "polyon %08x (gridsize: %f)\n", (int)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", (int)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 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)
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 wind = 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(abs(wind)==1);
assert(x<e->p.x);
gfxpolystroke_t*stroke = rfx_calloc(sizeof(gfxpolystroke_t));
stroke->num_points = 2;
stroke->points = malloc(sizeof(point_t)*2);
- stroke->dir = DIR_UP; // FIXME
- stroke->fs = 0;
+
+ if(wind>0) {
+ stroke->dir = DIR_DOWN;
+ } else {
+ stroke->dir = DIR_UP;
+ }
+#ifdef DEBUG
+ fprintf(stderr, "%d) draw horizontal line from %d to %d (dir=%s)\n", y, x, e->p.x, stroke->dir==DIR_UP?"up":"down");
+#endif
+
+ 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
- (because the horizontal line's fill style controls the area *below* the line)
- */
- a.x = e->p.x;
- b.x = x;
+ a.x = x;
+ b.x = e->p.x;
stroke->points[0] = a;
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 */
- segment_t* start = actlist_find(actlist, b, b);
- segment_t* s = actlist_find(actlist, a, a);
+ line isn't puncturing any segments in the active list */
+ segment_t* start = actlist_find(actlist, a, a);
+ segment_t* s = actlist_find(actlist, b, b);
while(s!=start) {
assert(s->a.y == y || s->b.y == y);
s = s->left;
}
#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);
+ wind += e->s1->dir==DIR_DOWN?-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);
+ wind += e->s1->dir==DIR_DOWN?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",
+ fprintf(stderr, "%d) event=%s[%d] left:[%d] x:%d dir:%s\n",
y, e->type==EVENT_START?"start":"end",
s->nr,
left?left->nr:-1,
- x);
+ x, s->dir==DIR_UP?"up":"down");
#endif
if(e->type == EVENT_END)
} while(e && y == e->p.y);
#ifdef CHECKS
- char bleeding = fill;
+ edgestyle_t*bleeding = fill;
assert(!bleeding);
+ segment_t*s = actlist_leftmost(actlist);
+ int dir = 0;
+ while(s) {
+ dir += s->dir==DIR_UP?-1:1;
+ s = actlist_right(actlist, s);
+ }
+ assert(!dir);
#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;
}
gfxline_t*box3 = gfxline_makerectangle(-100,-100,100,100);
//gfxline_append(box2, box3);
- gfxpoly_check(gfxpoly_from_stroke(box1, 2.0, gfx_capRound, gfx_joinRound, 0, 0.05));
+ gfxpoly_check(gfxpoly_from_stroke(box1, 2.0, gfx_capRound, gfx_joinRound, 0, 0.05), 1);
gfxmatrix_t matrix;
memset(&matrix, 0, sizeof(gfxmatrix_t));
double ua=M_PI/4;
matrix.m00=cos(ua);matrix.m10=sin(ua);
matrix.m01=-sin(ua);matrix.m11=cos(ua);
- //gfxline_transform(box1, &matrix);
+ gfxline_transform(box1, &matrix);
//gfxline_t*b = 0;
//b = gfxline_append(b, box1);
gfxline_free(box1);
gfxline_free(box2);
+
+ //gfxpoly_t*poly3 = gfxpoly_process(poly1, poly2, &windrule_intersect, &twopolygons);
gfxpoly_t*poly3 = gfxpoly_process(poly1, poly2, &windrule_intersect, &twopolygons);
gfxpoly_dump(poly3);
+
gfxline_t*line = gfxline_from_gfxpoly(poly3);
+
gfxline_dump(line, stdout, "");
gfxline_free(line);
gfxpoly_destroy(poly1);
{
gfxline_t*box1 = gfxline_makerectangle(50,50,150,150);
gfxline_t*box2 = gfxline_makerectangle(100,100,200,200);
- gfxline_t*box3 = gfxline_makerectangle(100,100,200,200);
+ gfxline_t*box3 = gfxline_makerectangle(200,100,300,200);
+ gfxline_t*box4 = gfxline_makerectangle(300,200,400,400);
+ gfxline_t* board = mkchessboard();
gfxline_t*star = mkstar(50,50, 150,150);
gfxline_t*b = 0;
b = gfxline_append(b, box1);
b = gfxline_append(b, box2);
b = gfxline_append(b, box3);
+ b = gfxline_append(b, box4);
gfxmatrix_t matrix;
memset(&matrix, 0, sizeof(gfxmatrix_t));
- double ua=0.1;
- matrix.m00=cos(ua);matrix.m10=sin(ua);
- matrix.m01=-sin(ua);matrix.m11=cos(ua);
+ matrix.m00 = 1.0;
+ matrix.m11 = 1.0;
+ matrix.tx = 200;
+ matrix.ty = 200;
+ gfxline_transform(board, &matrix);
+ b = gfxline_append(b, board);
//gfxline_transform(b, &matrix);
- gfxline_dump(b, stderr, "");
+ //gfxline_dump(b, stderr, "");
gfxpoly_t*poly = gfxpoly_from_fill(b, 0.05);
gfxline_free(box1);
gfxline_free(box3);
gfxline_free(star);
- gfxpoly_dump(poly);
+ //gfxpoly_dump(poly);
gfxpoly_t*poly2 = gfxpoly_process(poly, 0, &windrule_evenodd, &onepolygon);
+ //gfxpoly_dump(poly2);
+ gfxpoly_save_arrows(poly2, "test.ps");
gfxpoly_destroy(poly);
gfxpoly_destroy(poly2);
}
double zoom = 1.0;
- if(!gfxpoly_check(poly1)) {
+ if(!gfxpoly_check(poly1, 0)) {
printf("bad polygon\n");
continue;
}
gfxpoly_t*poly2 = gfxpoly_process(poly1, 0, rule, &onepolygon);
+ assert(gfxpoly_check(poly2, 1));
int pass;
for(pass=0;pass<2;pass++) {
intbbox_t bbox = intbbox_from_polygon(poly1, zoom);
unsigned char*bitmap1 = render_polygon(poly1, &bbox, zoom, rule, &onepolygon);
- unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd, &onepolygon);
+ unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_circular, &onepolygon);
if(!bitmap_ok(&bbox, bitmap1) || !bitmap_ok(&bbox, bitmap2)) {
save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
assert(!"error in bitmaps");
}
free(bitmap1);
free(bitmap2);
-
+
// second pass renders the 90° rotated version
rotate90(poly1);
rotate90(poly2);
fprintf(stderr, "%d segments (max so far: %d/%d)\n", size, max_segments, max_any_segments);
}
- if(!gfxpoly_check(poly1)) {
+ if(!gfxpoly_check(poly1, 0)) {
gfxpoly_destroy(poly1);
fprintf(stderr, "bad polygon\n");
return;
internal: 0
};
+#if 0
void test5(int argn, char*argv[])
{
gfxsource_t*driver = gfxsource_pdf_create();
closedir(_dir);
driver->destroy(driver);
}
+#endif
int main(int argn, char*argv[])
{
- test0(argn, argv);
+ test4(argn, argv);
}
git.asbjorn.biz / swftools.git / commitdiff