added second cardboard example

Author: codeanticode

cardboard/ex2_grid_and_boxes/ex2_grid_and_boxes.pde

@@ -0,0 +1,44 @@
+import processing.cardboard.*;
+
+PShape grid;
+PShape cubes;
+
+void setup() {
+  fullScreen(PCardboard.STEREO);
+  
+  grid = createShape();
+  grid.beginShape(LINES);
+  grid.stroke(255);
+  for (int x = -10000; x < +10000; x += 250) {
+    grid.vertex(x, -1000, +10000);
+    grid.vertex(x, -1000, -10000);
+  }
+  for (int z = -10000; z < +10000; z += 250) {
+    grid.vertex(+10000, -1000, z);
+    grid.vertex(-10000, -1000, z);      
+  }  
+  grid.endShape();  
+  
+  cubes = createShape(GROUP);
+  for (int i = 0; i < 100; i++) {
+    float x = random(-1000, +1000); 
+    float y = random(-1000, +1000);
+    float z = random(-1000, +1000);
+    
+    float r = random(50, 150);
+    PShape cube = createShape(BOX, r, r, r);
+    cube.setStroke(false);
+    cube.setFill(color(180));
+    cube.translate(x, y, z);
+    cubes.addChild(cube);
+  }
+}
+
+void draw() {
+  background(0);
+  ambientLight(150, 150, 150);
+  pointLight(255, 255, 255, 0, 0, 0);
+  translate(width/2 - 1000, height/2, 500);
+  shape(cubes);
+  shape(grid);
+}