- gfxpoly_t*poly2 = gfxpoly_process(poly, rule);
- unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule);
- unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd);
- if(!bitmap_ok(&bbox, bitmap1) || !bitmap_ok(&bbox, bitmap2)) {
- save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
- assert(!"error in bitmaps");
- }
- if(!compare_bitmaps(&bbox, bitmap1, bitmap2)) {
- save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
- assert(!"bitmaps don't match");
- }
- free(bitmap1);
- free(bitmap2);
+ gfxpoly_t*poly2 = gfxpoly_process(poly, rule, &onepolygon);
+
+ int pass;
+ for(pass=0;pass<2;pass++) {
+ intbbox_t bbox = intbbox_from_polygon(poly, zoom);
+ unsigned char*bitmap1 = render_polygon(poly, &bbox, zoom, rule, &onepolygon);
+ unsigned char*bitmap2 = render_polygon(poly2, &bbox, zoom, &windrule_evenodd, &onepolygon);
+ if(!bitmap_ok(&bbox, bitmap1) || !bitmap_ok(&bbox, bitmap2)) {
+ save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
+ assert(!"error in bitmaps");
+ }
+ if(!compare_bitmaps(&bbox, bitmap1, bitmap2)) {
+ save_two_bitmaps(&bbox, bitmap1, bitmap2, "error.png");
+ assert(!"bitmaps don't match");
+ }
+ free(bitmap1);
+ free(bitmap2);
+
+ // second pass renders the 90° rotated version
+ rotate90(poly);
+ rotate90(poly2);
+ }
+