float x,y,theta;
int t;

void setup(){
  background(0);
  size(800,600);
  x=width/2;
  y=height/2;
  t=1;
  rectMode(CENTER);
  noFill();
  ellipseMode(CENTER);
}

void draw(){
  
  //noStroke();
  //rect(x,y,5,5);
  
  theta=random(TWO_PI);
  
  stroke(0,255,0);
  line(x,y,x+(10*sin(theta)),y+(10*cos(theta)));
  x+=10*sin(theta);
  y+=10*cos(theta);
  
  //ellipse(width/2,height/2,(10*sqrt(t))/2,(10*sqrt(t))/2);
  t++;
  
  if (x<0){
    x=0;
  }
  else if (x>width){
    x=width;
  }
  if (y<0){
    y=0;
  }
  else if (y>height){
    y=height;
  }
  
  println(frameRate);
}

void mousePressed(){
  background(0);
}