psy_test

float a=0.0, d=18, r, x0, x1, x2, y0, y1, y2;

float re=random(10), gr=random(10), bl=random(10);

void setup() {

  size(512, 512);

  x0=width/2;

  y0=height/2;

  smooth();

}

void draw() {

  //background(0);

  noStroke();

  fill(re, gr, bl, 4);

  rect(0, 0, width, height);

  stroke(255-re, 255-gr, 255-bl);

  r=height/164;

  for(int i=0; i<d*10; i++) {

    x1=x0+r*cos(a+TWO_PI*i/d);

    y1=y0+r*sin(a+TWO_PI*i/d);

    r+=2;

    x2=x0+r*cos(a+TWO_PI*(i+1)/d);

    y2=y0+r*sin(a+TWO_PI*(i+1)/d);

      line(x1, y1, x2, y2);

  }

  a+=TWO_PI/d/7;

}

​