linkedCubes.pde

// by dave aka bees & bombs >:)

void setup() {
  colorMode(HSB,1);
  size(540, 540, P3D);
  rectMode(CENTER);
  fill(200);
  noStroke();
  frameRate(50);
  smooth(8);
}

float t;
int N = 12;
float l = 84, w = 10, r = 150;

void four() {
  for (int i=0; i<4; i++) {
    pushMatrix();
    rotateY(HALF_PI*i);
    translate(.5*(l-w), 0, .5*(l-w));
    box(w, l, w);
    popMatrix();
  }
}

void cube() {
  pushMatrix();
  rotateX(atan(sqrt(.5)));
  rotateZ(QUARTER_PI);
  four();
  pushMatrix();
  rotateX(HALF_PI);
  four();
  popMatrix();
  pushMatrix();
  rotateZ(HALF_PI);
  four();
  popMatrix();
  popMatrix();
}

void draw() {
  t = 0.01*frameCount;
  lights();
  background(0);
  pushMatrix();
  translate(width/2, height/2);
  for (int i=0; i<N; i++) {
    fill(((i+t)/float(N)%1),.8,1);
    pushMatrix();
    rotate(TWO_PI*(i+t)/N);
    translate(r, 0, 0);
    rotateY(-TWO_PI*t/3);
    cube();
    popMatrix();
  }
  popMatrix();
}