working on glitches

Fonderie/glitches.c

@@ -117,6 +117,7 @@ int vertical_singlitch(FloatImg *picz, int xpos, float fval,
 						float omega, float phi)
 {
 int		y, x, w, h;
+double		dy;
 
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( %p %d %f %f )\n", __func__, picz,
@@ -124,9 +125,13 @@ fprintf(stderr, ">>> %s ( %p %d %f %f )\n", __func__, picz,
 #endif
 
 h = picz->height;		w = picz->width;
-#define BB 12
+#define BB 10
 for (y=BB; y<h-BB; y++) {
-	x = xpos;	/* add sinus deviation here */
+
+	dy = (double)y * omega;
+
+	x = xpos + (int)(10.9*sin(dy+phi));	/* add sinus deviation */
+
 	/* compute bounding box */
 	if ( (x>BB) && (x<w-BB) ) {
 		/* an make the glitch */