gif_example shows how to make animated gifs

gif_example/README.md

@@ -0,0 +1,3 @@
+# gif example
+
+Example for writing a Processing sketch that exports an animated gif

gif_example/gif_example.pde

@@ -0,0 +1,38 @@
+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();
+  }
+}