loop of circles

/**

* loop of circles

*

* @author aa_debdeb

* @date 2016/12/23

*/

​

int NUM = 24;

​

void setup(){

  size(640, 640);

  noStroke();

}

​

void draw(){

  background(0, 0, 30);

  translate(width / 2, height / 2);

  for(int i = 0; i < NUM; i++){

    float angle = i * TWO_PI / NUM;

    float v = pow(abs(sin(angle / 2 + frameCount * 0.03)), 4);

    float r = map(v, 0, 1, 10, 20);

    fill(lerpColor(color(255, 0, 191), color(191, 255, 0), v));

    ellipse((150 + r) * cos(angle), (150 + r) * sin(angle), r * 2, r * 2);

  }

}