a port of the Processing Visualization Language

Rotate

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).

Original Processing.org Example: Rotate

// All Examples Written by Casey Reas and Ben Fry

// unless otherwise stated.

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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