Spirograph

float radius = 100;

float angle = 0;

color pastelColor;

​

​

​

void setup() {

  size(500, 500);

  background(0);

  noFill();

}

​

void draw() {

  smooth();

  translate(width/2, height/2);

  rotate(radius);

   int pastel = int(random(5));

  if (pastel == 0) { pastelColor = color (146,240,128); //green

  } else if (pastel == 1) { pastelColor = color (176,128,240); //purple

  } else if (pastel == 2) { pastelColor = color (225,238,136); //yellow

  } else if (pastel == 3) { pastelColor = color (234,128,240); //red

  } else if (pastel == 4) { pastelColor = color (128,146,240); //blue

  }

  stroke (pastelColor);

  arc(80, 50, 200, 200, HALF_PI*radius, PI*radius);

  arc(50, 30, 300, 100, PI+QUARTER_PI*radius, TWO_PI*radius);

​

  if (angle>300) {  

    noLoop();

  } 

  else {

    radius=radius+10;

    angle++;

  }

}