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Examples for Processing (BETA) version 91+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Push Pop
by REAS <http://reas.com>

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.

Created 26 October 2002

    
// Push Pop 
// by REAS <http://reas.com> 

float a;                          // Angle of rotation 
float offset = PI/24;             // Angle offset between boxes 
int num = 12;                     // Number of boxes 
color[] colors = new color[num];  // Colors of each box 
color safecolor; 
 
boolean pink = true; 
 
void setup() 
{ 
  size(200, 200, P3D); 
  noStroke();  
  framerate(30); 
  safecolor = color(153, 153, 153); 
  for(int i=0; i<num; i++) { 
    colors[i] = color(255 * (i+1)/num, 153 * (num-i)/num, 204); 
  } 
  lights(); 
} 
 
 
void draw() 
{     
  background(0, 0, 26); 
      
  translate(width/2, height/2, -20); 
  a+=0.04; 
  if(a >= TWO_PI*2) { 
    a = 0.0; 
  }    
  for(int i=0; i<num; i++) { 
    pushMatrix(); 
    fill(colors[i]); 
    rotateY(a+offset*i); 
    rotateX(a/2+offset*i); 
    box(width/2); 
    popMatrix(); 
  } 
}
 







    
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