moving the OpenGL examples to the core

java/examples/OpenGL/Advanced/Particles/Particles.pde

@@ -0,0 +1,31 @@
+// Particles, by Daniel Shiffman
+
+ParticleSystem ps;
+PImage sprite;  
+
+void setup() {
+  size(640, 400, P3D);
+  orientation(LANDSCAPE);
+  sprite = loadImage("sprite.png");
+  ps = new ParticleSystem(10000);
+
+  // Writing to the depth buffer is disabled to avoid rendering
+  // artifacts due to the fact that the particles are semi-transparent
+  // but not z-sorted.
+  hint(DISABLE_DEPTH_MASK);
+} 
+
+void draw () {
+  background(0);
+  ps.update();
+  ps.display();
+  
+  ps.setEmitter(mouseX,mouseY);
+  
+  fill(255);
+  textSize(16);
+  text("Frame rate: " + int(frameRate),10,20);
+  
+}
+
+