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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.

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

Rotating a square around the Z axis. To get the results you expect, send the rotate function angle parameters that are values between 0 and PI*2 (TWO_PI which is roughly 6.28). If you prefer to think about angles as degrees (0-360), you can use the radians() method to convert your values. For example: scale(radians(90)) is identical to the statement scale(PI/2)

Created 12 January 2003

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

void setup() 
{ 
  size(200,200); 
  noStroke(); 
  fill(255); 
  framerate(30); 
} 
 
float angle; 
float cosine; 
float jitter; 
 
void draw() 
{ 
  background(102); 
  
  if(second()%2 == 0){ 
    jitter = (random(-0.1, 0.1)); 
  } 
  angle = angle + jitter; 
  cosine = cos(angle); 
  
  translate(width/2, height/2); 
  rotate(cosine); 
  rectMode(CENTER); 
  rect(0, 0, 115, 115);   
}
 







    
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