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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.

Ortho
by REAS <http://reas.com>

Click to see the difference between orthographic projection and perspective projection as applied to a simple box.

Created 28 April 2005

    
// Ortho 
// by REAS <http://reas.com> 

 
void setup() 
{ 
  size(200, 200, P3D); 
  noStroke(); 
  fill(204); 
} 
 
void draw() 
{ 
  background(0); 
  lights(); 
 
  if(mousePressed) { 
    float fov = 60.0; 
    float cameraZ = (height/2.0) / tan(PI * fov / 360.0); 
    perspective(fov, float(width)/float(height), 
                cameraZ/10.0, cameraZ*10.0); 
  } else { 
    ortho(-width/2, width/2, -height/2, height/2, -10, 10); 
  } 
  
  translate(100, 100); 
  rotateX(-PI/6); 
  rotateY(PI/3); 
  box(85); 
}
 







    
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