float r=2;
int i=3;
int radius = 50;
int a = 0;
int b = 0;
int c = 0;

float re;
float gr;
float bl;
float al;
PFont font;
float targetRadius;
float easing = 0.05;

void randomFill(){
  re = random(255);
  gr = random(255);
  bl = random(255);
  al = random(255);
  fill(re,gr,bl,al);
  //stroke(re,gr,bl);
  noStroke();
}

void setup(){
  size(800,800);
  smooth();
  //noStroke();
  noFill();
  background(0);
  frameRate(25);



}

void draw(){


  for (int w=0;w<r+1;w++){
    i=i*2;
  }

  targetRadius=dist(mouseX,mouseY, width/2,height/2)*2;
  float dx = targetRadius - radius;
  if(abs(dx) > 1) {
    radius += dx*easing;
  }

  if (targetRadius>width+width/5*2){
    radius=50;
  }

  background(0);
  int minradius=100; int maxradius=200;
  float j = 0;
  if ((radius>minradius) && (radius<maxradius) ) {
    if(radius<((minradius+maxradius)/2)){
      j=minradius-radius;
      j=(j/50)*255;
    }
      
    
      
      
    noFill();
    stroke(255,0,255,j);
    strokeWeight(10);
    ellipse(width/2,height/2,radius+50,radius+50);

}

  //noLoop();
  float[] T = new float[i+1];
  float[] tx = new float[i+1];
  float[] ty = new float[i+1];

  for(int n=1;n<i+1;n++){
    T[n] = random(0,360);
  }

  T[i]=120;
  T[i/3]=240;
  T[i/3*2]=360;

  T = sort(T);


  for(int n=1;n<i+1;n++){
    tx[n]=width/2+sin(radians(T[n]))*radius/2;
    ty[n]=width/2+cos(radians(T[n]))*radius/2;
  }









  //first iteration
  int n=1;

  //fill(0,0,0);
  randomFill();
  triangle(tx[n],ty[n],tx[n+i/3],ty[n+i/3],tx[n+i/3*2],ty[n+i/3*2]);

  //second it

  for(int m=1;m<i+1;m=m+i/3){    

    randomFill();

    a = m;
    b = m+i/3/2;
    c = m+i/3;


    if (a > i){
      a = a-i;
    }
    if (b > i){
      b = b-i;
    }
    if (c > i){
      c = c-i;
    }  

    triangle(tx[a],ty[a],tx[b],ty[b],tx[c],ty[c]); 

  }


  for(int m=1;m<i+1;m=m+i/3/2){    
    randomFill();
    a = m;
    b = m+i/12;
    c = m+i/12*2;


    if (a > i){
      a = a-i;
    }
    if (b > i){
      b = b-i;
    }
    if (c > i){
      c = c-i;
    }  
    triangle(tx[a],ty[a],tx[b],ty[b],tx[c],ty[c]);     
  }

  for(int m=1;m<i+1;m=m+i/12){    
    randomFill();
    a = m;
    b = m+i/24;
    c = m+i/24*2;


    if (a > i){
      a = a-i;
    }
    if (b > i){
      b = b-i;
    }
    if (c > i){
      c = c-i;
    }  
    triangle(tx[a],ty[a],tx[b],ty[b],tx[c],ty[c]);  
  }  

  for(int m=1;m<i+1;m=m+i/24){    
    randomFill();
    a = m;
    b = m+i/48;
    c = m+i/48*2;


    if (a > i){
      a = a-i;
    }
    if (b > i){
      b = b-i;
    }
    if (c > i){
      c = c-i;
    }  
    triangle(tx[a],ty[a],tx[b],ty[b],tx[c],ty[c]);  
  } 






  /*
  for (int w=1;w<i+1;w++){
   fill(255,0,255);
   point(tx[w],ty[w]);
   text(w,tx[w],ty[w]);
   }
   */
  i=3;
  randomFill();
  ellipse(width/2,height/2,radius+20,radius+20);
}





void keyPressed(){
  redraw();
}