I have a Thread running and it calls to a method getColor.

When i use it my processing starts to flicker and colors changes sometimes. Of things that have nothing to do with it (like the background).

Anyone a idea why?

2. private int getColor(PImage img) {
3. 
   
4.   int r = 0;
5.   int g = 0;
6.   int b = 0;
7.   int a = 0;
8. 
   
9.   int c;
10. 
    
11.   for (int i = 0; i < img.pixels.length; i++) {
12.     c = img.pixels[i];
13. 
    
14.     r += (c >> 16) & 0xFF;
15.     g += (c >> 8) & 0xFF;
16.     b += c & 0xFF;
17.     a += (c >> 24) & 0xFF;
18.   }
19. 
    
20.   r = r / img.pixels.length;
21.   g = g / img.pixels.length;
22.   b = b / img.pixels.length;
23.   a = a / img.pixels.length;
24. 
    
25.   c = p.color(r, g, b, a);
26. 
    
27.   return c;
28. }