ewwwww - fix infinte loop bug... :)

SVN revision: 4152

src/rgbadraw.c

@@ -2140,8 +2140,8 @@ span(ImlibImage * im, int y, int x1, int x2, DATA8 r, DATA8 g,
 typedef struct _span Span;
 struct _span
 {
-   int x, xstart, ystart, vert;
+   int x, xstart, ystart, vert, xend, yend;
-   int pol;
+   int pol, point;
    double gradient;
    Span *next;
 };
@@ -2231,7 +2231,7 @@ __imlib_draw_polygon_filled(ImlibImage * im, ImlibPoly poly, int clip_xmin,
 	else dir = -1;
      }
    else dir = -1;
-   for (j = 0; j < poly->pointcount; j += dir)
+   for (j = 0; (j != poly->pointcount) && (j != -poly->pointcount); j += dir)
      {
 	int pt1, pt2, x1, y1, x2, y2, vert, step;
 	double grad;
@@ -2285,26 +2285,30 @@ __imlib_draw_polygon_filled(ImlibImage * im, ImlibPoly poly, int clip_xmin,
 	       {
 		  /* for every scanline this line spans add a span point */
 		  s = malloc(sizeof(Span));
-		  if (pol == 1)
+		  if (pol == 1) s->x = x + 1;
-		     s->x = x + 1;
+		  else          s->x = x;
-		  else
+		  s->pol =      pol;
-		     s->x = x;
+		  s->xstart =   x1;
-		  s->pol = pol;
+		  s->ystart =   y1;
-		  s->xstart = x1;
+		  s->xend =     x2;
-		  s->ystart = y1;
+		  s->yend =     y2;
-		  s->vert = vert;
+		  s->vert =     vert;
 		  s->gradient = grad;
-		  s->next = NULL;
+		  s->next =     NULL;
+		  
+		  if ((i == y1) || (i == y2)) s->point =    1;
+		  else 		              s->point =    0;
 
 		  /* actually add the scan point to the scan list array */
-		  if (!spans[i - clip_ymin]) spans[i - clip_ymin] = s;
+		  if (!(spans[i - clip_ymin])) spans[i - clip_ymin] = s;
 		  else
 		    {
 		       Span *ps, *ss;
 		       
-		       for (ps = NULL, ss = spans[i - clip_ymin]; 
+		       ps = NULL;
+		       for (ss = spans[i - clip_ymin]; 
 			    ss; 
-			    ps = ss, ss = ss->next)
+			    ss = ss->next)
 			 {
 			    if (s->x <= ss->x)
 			      {
@@ -2313,13 +2317,17 @@ __imlib_draw_polygon_filled(ImlibImage * im, ImlibPoly poly, int clip_xmin,
 				 s->next = ss;
 				 goto nospans;
 			      }
+			    ps = ss;
 			 }
+		       /* last span on line and still not < ss->x */
+		       if (ps) ps->next = s;
 		       nospans:
 		    }
 	       }
-	     if (i == y2) break;
+	     if (i == y2) goto nolines;
 	     i += step;
 	  }
+	nolines:
      }
    for (i = 0; i < h; i++)
      {
@@ -2331,7 +2339,8 @@ __imlib_draw_polygon_filled(ImlibImage * im, ImlibPoly poly, int clip_xmin,
 	       {
 		  if ((s->next) && 
 		      (s->next->x == s->x) && 
-		      (s->next->pol == s->pol))
+		      (s->next->pol == s->pol)
+		      )
 		    {
 		       Span *ss;
 		       

test/main.c

@@ -73,6 +73,7 @@ int main (int argc, char **argv)
    int interactive = 1;
    int blendtest = 0;
    int filter = 0;
+   int pol = 0;
    int rotate = 0;
    int rottest = 0;
    int scaleup = 0;
@@ -118,6 +119,7 @@ int main (int argc, char **argv)
 	printf ("-maxcolors <n>\t\tLimit color allocation count to n colors.\n"); // require parameter nb colors
 	printf ("-text\t\tDisplays the text following this option. Need a loaded font.\n");
 	printf ("-font\t\tLoads a font. The parameter must follow the police_name/size format. Example: loading the grunge font at size 18 is : grunge/18.\n\t\tThe XFD font also can be specified. Ex. 'notepad/32,-*--24-*'.\n");
+	printf ("-poly\t\tPerforms a poly test\n");
 	printf ("The following options requires a file to work properly.\n");
 	printf ("-textdir\t\tText Direction. 0: L to R, 1: R to L\n");
 	printf ("                            2: U to D, 3: D to U, 4: angle\n");
@@ -155,6 +157,8 @@ int main (int argc, char **argv)
 	   origone = 1;
 	else if (!strcmp(argv[i], "-blend"))
 	   blend = 1;
+	else if (!strcmp(argv[i], "-poly"))
+	   pol = 1;
 	else if (!strcmp(argv[i], "-blendtest"))
 	  {
 	     blendtest = 1;
@@ -344,6 +348,61 @@ int main (int argc, char **argv)
    imlib_polygon_add_point(poly3, 350,300);
 
 
+#define A90 (3.141592654 / 2)	  
+   if (pol)
+     {
+	Imlib_Image im_bg, im;
+	int w, h;
+	int i;
+	double a, points[8][2];
+	
+        if (file)
+	  im_bg = imlib_load_image(file);
+	else
+	  im_bg = imlib_load_image("test_images/bg.png");
+	imlib_context_set_image(im_bg);
+	w = imlib_image_get_width();
+	h = imlib_image_get_height();
+	XResizeWindow(disp, win, w, h);
+	XSync(disp, False);
+	im = imlib_create_image(w, h);
+	srand(time(NULL));
+	for (i = 0; i < 8; i++)
+	  {
+	     points[i][0] = (rand()%w) - (w / 2);
+	     points[i][1] = (rand()%h) - (h / 2);
+	  }
+	a = 0.0;
+	for (;;)
+	  {
+	     imlib_context_set_image(im);
+             imlib_blend_image_onto_image(im_bg, 0, 0, 0, w, h, 0, 0, w, h);
+	     
+	     poly = imlib_polygon_new();
+	     for (i = 0; i < 8; i++)
+	       {
+		  double xx, yy;
+		  xx = (w / 2) + 
+		    (cos(a) * points[i][0]) + 
+		    (cos(a + A90) * points[i][1]);
+		  yy = (h / 2) + 
+		    (sin(a) * points[i][0]) + 
+		    (sin(a + A90) * points[i][1]);
+		  imlib_polygon_add_point(poly, xx, yy);
+	       }
+	     printf("draw angle %3.3f\n", a);	     
+	     imlib_context_set_color(255, 255, 255, 100);
+	     imlib_image_fill_polygon(poly);
+	     imlib_context_set_color(0, 0, 0, 20);
+	     imlib_image_draw_polygon(poly, 1);
+	     imlib_polygon_free(poly);
+	     
+	     
+	     imlib_render_image_on_drawable(0, 0);
+	     a += 0.05;
+	  }
+     }
+   
    if (loop)
      {
 	printf("loop\n");