make an animated gif with Processing

gif_example.pde

import gifAnimation.*;

GifMaker gifExport;
int frames = 0;
int totalFrames = 120;

public void setup() {
  smooth();
  size(400, 400);

  gifExport = new GifMaker(this, "export.gif", 100);
  gifExport.setRepeat(0); // make it an "endless" animation

  noFill();
  stroke(0);
  strokeWeight(20);
}

void draw() {
  background(255);

  float size = 100.0 * sin(TWO_PI * frames / float(totalFrames)) + 200.0;
  ellipse(width/ 2.0, height / 2.0, size, size);
  export();
}

void export() {
  if(frames < totalFrames) {
    gifExport.setDelay(20);
    gifExport.addFrame();
    frames++;
  } else {
    gifExport.finish();
    frames++;
    println("gif saved");
    exit();
  }
}

running this program will generate the following animated gif:

if that link breaks, it's here on my Tumblr

very good demonstration for making gifs thank you.

What a great example!!!
thanks so much

Awesome! Thanks so much. Works great with 01010101's port for the current (3.X) version of Processing at https://github.com/01010101/GifAnimation.

Great! Working very good! You really helped me and my project ;D nice bro! =)

Does anyone still have a current link to the library? The posted link is broken

https://github.com/extrapixel/gif-animation/tree/3.0

oh I didn't notice C00dy's comment at the time, must have had github notifications turned off. I updated the original tumblr post to include the link to the 3.0 version.