BallOfWool.pde

int radius = 200;
 
float lastX = 0;
float lastY = 0;
 
void setup(){
 size(600, 600);
 noLoop();
 noSmooth();
}
 
void draw(){
  background(0);
  stroke(255);
  translate(width/2, height/2);
  for(float angle = 0 ; angle < 125.7 ; angle += 0.1 ){
    float x = radius * sin(angle);
    float y = radius * cos(angle) * sin(angle * 0.95);
 
    line(lastX, lastY, x, y);
 
    lastX = x;
    lastY = y;
  }
}