moving the OpenGL examples to the core

java/examples/OpenGL/Transform/Birds/Birds.pde

@@ -0,0 +1,53 @@
+/**
+ * Crazy Flocking 3D Birds 
+ * by Ira Greenberg. 
+ * 
+ * Simulates a flock of birds using a Bird class and nested
+ * pushMatrix() / popMatrix() functions. 
+ * Trigonometry functions handle the flapping and sinuous movement.
+ */
+
+// Flock array
+int birdCount = 200;
+Bird[]birds = new Bird[birdCount];
+float[]x = new float[birdCount];
+float[]y = new float[birdCount];
+float[]z = new float[birdCount];
+float[]rx = new float[birdCount];
+float[]ry = new float[birdCount];
+float[]rz = new float[birdCount];
+float[]spd = new float[birdCount];
+float[]rot = new float[birdCount];
+
+void setup() {
+  size(640, 360, P3D);
+  noStroke();
+
+  // Initialize arrays with random values
+  for (int i = 0; i < birdCount; i++){
+    birds[i] = new Bird(random(-300, 300), random(-300, 300), 
+               random(-500, -2500), random(5, 30), random(5, 30)); 
+
+    x[i] = random(20, 340);
+    y[i] = random(30, 350);
+    z[i] = random(1000, 4800);
+    rx[i] = random(-160, 160);
+    ry[i] = random(-55, 55);
+    rz[i] = random(-20, 20);
+    spd[i] = random(.1, 3.75);
+    rot[i] = random(.025, .15);
+  }
+}
+
+void draw() {
+  background(0);
+  lights();
+  for (int i = 0; i < birdCount; i++){
+    birds[i].setFlight(x[i], y[i], z[i], rx[i], ry[i], rz[i]);
+    birds[i].setWingSpeed(spd[i]);
+    birds[i].setRotSpeed(rot[i]);
+    birds[i].fly();
+  }
+}
+
+