Exercise 50

/*-------- Circle Pattern ----------------*/

int margin;
int res = 4;
int padding;
 
color c [] = {
  #75a665,
  #5c801a,
  #5a7e18,
  #735742,
  #afb837,
  #564311,
  #32320e
};
 
void setup ()
{
  size (700, 700);
  smooth();
  frameRate (10);
  margin = width/10;
  padding = width /30;
}
 
void draw ()
{
  background (237);
  randomSeed (year() + day() + hour() + minute() + (second ()/ 20 % 2));
  noStroke();
 
  int d = int ((width-2*margin-(res-1)*padding) /(float) res);
  int D = d;
  for (int x = margin; x < width-margin; x+=d+padding)
  {
 
    for (int y = margin; y < width-margin; y+=d+padding)
    {
      D = d;
      int [] cc = new int [3];
      int i = 0;
      while (i < cc.length)
      {
        int index = (int) random (c.length);
        boolean taken = false;
        for (int j = 0; j < i; j++)
        {
          if (cc[j] == index)
          {
            taken = true;
            break;
          }
        }
        if (!taken)
        {
          D = (int) random (D/2, D);
          fill (c[index]);
          ellipse (x+d/2, y+d/2, D, D);
          i++;
        }
      }
    }
  }
}
 
void mouseDragged ()
{
  if (mouseButton == LEFT)
  {
    margin = (int) map (mouseX, 0, width, 0, width/3);
    padding = (int) map (mouseY, 0, width, 0, height/15);
  }
  else res = (int) map (mouseX, 0, width, 1, 50);
}
 
void keyPressed ()
{
  setup();
}