ArrayList<Bit> bits;// = new ArrayList<Bit>();

void keyPressed(){
 reset(); 
}
void reset(){
  bits = new ArrayList<Bit>();
 for(int i = 0; i < 20; i++){
     bits.add(new Bit());   
   }  
}

void setup(){
   size(500,500); 
   noStroke();
  reset();
   
   rectMode(CENTER);
}
float baseangle,baseangle2,basedist;
void draw(){
background(255);
  pushMatrix();
  translate(250,250);
  baseangle = map(mouseX,0,500,-PI,PI);
  baseangle2 = map(mouseY,0,500,-PI*2,PI*2);
  basedist = map(mouseY,0,500,0,2);
  for(Bit b : bits){
    b.draw(mouseX-250,mouseY-250); 
  }
 // stroke(0);
 // line(0,0,100*cos(baseangle),100*sin(baseangle));
  popMatrix();
  
}



class Bit{
   float myangle = random(PI*2);
   float spin;
   float d = random(50,250);
   float anglemul = 1;//random(1,2);
   float as = random(40);
   float bs = random(40);
   color c = color(random(128,255),random(128,255),random(128,255));
   void draw(float gx, float gy){
     spin = baseangle2 * anglemul; 
     float a = baseangle + myangle;
    
     drawbit(true,d,cos(a),sin(a));
     drawbit(false,d,cos(-a),sin(-a));
      drawbit(true,d,cos(PI+a),sin(PI+a));
     drawbit(false,d,cos(PI-a),sin(PI-a));
     drawbit(true,d,cos(PI/2+a),sin(PI/2+a));
     drawbit(false,d,cos(PI/2-a),sin(PI/2-a));
     drawbit(true,d,cos(PI*3/2+a),sin(PI*3/2+a));
     drawbit(false,d,cos(PI*3/2-a),sin(PI*3/2-a));
 
     drawbit(true,d,cos(PI/4+a),sin(PI/4+a));
     drawbit(false,d,cos(PI/4-a),sin(PI/4-a));
     drawbit(true,d,cos(PI*3/4+a),sin(PI*3/4+a));
    drawbit(false,d,cos(PI*3/4-a),sin(PI*3/4-a));
      
     drawbit(true,d,cos(-PI/4+a),sin(-PI/4+a));
     drawbit(false,d,cos(-PI/4-a),sin(-PI/4-a));
     drawbit(true,d,cos(-PI*3/4+a),sin(-PI*3/4+a));
     drawbit(false,d,cos(-PI*3/4-a),sin(-PI*3/4-a));
      
      
      
   }
   void drawbit(boolean flip, float td,float tx, float ty){
     float a = flip ? spin : -spin ;
     pushMatrix();
     translate(td*tx*basedist,td*ty*basedist);
     rotate(a);
     fill(c);
     rect(0,0,as,bs);
     popMatrix();
   }
 
  
  
}