[pjs4wp]

/**
* Rotate Push Pop.
*
* The push() and pop() functions allow for more control over transformations.
* The push function saves the current coordinate system to the stack
* and pop() restores the prior coordinate system.
*/

float a;
float offset = PI/24.0;
int num = 12;

void setup() {
size(640, 360, P3D);
noStroke();
}

void draw() {

lights();

background(0, 0, 26);
translate(width/2, height/2);

for(int i = 0; i < num; i++) { float gray = map(i, 0, num-1, 0, 255); pushMatrix(); fill(gray); rotateY(a + offset*i); rotateX(a/2 + offset*i); box(200); popMatrix(); } a += 0.01; } [/pjs4wp]