/* Failed Fractals: a code poem
   Jose Carlos Silvestre, 2008
*/
PImage img;
  int radius = 1500000;
  int c_rel = 1;
  int c_ima = 1;
  int x, y;
  int turn = 0;
  
void setup() 
{
  size(600, 600);  
}


void draw() 
{

  background(255,255,255);
  img = createImage(600, 600, ARGB);

  
    for(int i=0; i < img.pixels.length; i++) {
    
    x = (i % img.width)*2;
    y = (i/img.width)*2;
    int cor = 0;
    int r = 0;
    
    while(cor < 6 && r < radius) {

    int x2 = x*x - y*y + c_rel;
    int y2 = 2*x*y + c_ima;
    cor++;
    r = x2*x2 + y2*y2;    
    if (r > radius) { 
                      break;}
    else {x = x2; y = y2;}
    }  
    
    
    switch(cor) {
   case 1:
    img.pixels[i] = color(0, 0, 0); break;
   case 2:
    img.pixels[i] = color(100, 100, 100); break;    
   case 3:
    img.pixels[i] = color(130, 130, 130); break;
   case 4:
    img.pixels[i] = color(170, 170, 170); break;
   case 5:
    img.pixels[i] = color(200, 200, 200); break;
  case 6:
    img.pixels[i] = color(220, 220, 220); break;   }

   
  } 

  image(img, 0, 0);

// this part varies the parameter c to create
// the animation. it watches for c itself to 
// overflow to switch turns.
switch(turn) {

  case 0:  if(c_rel > 0) c_rel*=2;
  else {c_rel=-1; turn=1;}
  break;
  
  case 1: if(c_rel <0) c_rel*=2;
  else  {c_rel=1; turn=2;}
  break;
  
  case 2: if(c_ima > 0) c_ima*=2;
  else {c_ima=-1; turn=3;} 
  break;
  
  case 3: if(c_ima <0) c_ima*=2;
  else  {c_ima=1; turn=4;}
  break;
  
  case 4: if(c_ima > 0 && c_rel > 0) {c_rel*=2; c_ima*=2;}
  else  {c_ima=-1; c_rel=1; turn=5;}
  break;
  
  case 5: if(c_ima < 0 && c_rel > 0) {c_rel*=2; c_ima*=2;}
  else  {c_ima=1; c_rel=1; turn=6;}
  break;
  
  case 6: if(c_ima > 0 && c_rel > 0) {c_rel*=3; c_ima*=2;}
  else  {c_ima=1; c_rel=1; turn=7;}
  break;
  
  case 7: if(c_ima > 0 && c_rel > 0) {c_rel*=2; c_ima*=3;}
  else  {c_ima=1; c_rel=1; turn=8;}
  break;
  
  case 8: if(c_ima > 0 && c_rel > 0) {c_rel*=15; c_ima*=2;}
  else  {c_ima=1; c_rel=1; turn=9;}
  break;
  
  case 9:
  turn = 0; noLoop();
  break;

}  
  delay(150);

}

void mousePressed() {
  loop(); }