Test if a plane is within the view of the camera (aka testing if culled)
Once a plane leaves the camera’s view, it will turn red. So the next time you see it, you will be able to see that it has been culled before. Hit the space bar to reset all to green.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | package { import flash.events.Event; import flash.events.KeyboardEvent; import flash.ui.Keyboard; import org.papervision3d.cameras.CameraType; import org.papervision3d.materials.ColorMaterial; import org.papervision3d.objects.primitives.Plane; import org.papervision3d.view.BasicView; [SWF(width="900", height="480", backgroundColor="#000000", frameRate="31")] public class TestIfCulled extends BasicView { public function TestIfCulled() { super(900, 480, true, false, CameraType.DEBUG); //sidenote: if you don't want objects culled, disable culling //camera.useCulling = false; var length:int = 120; for(var i:int = 0; i < length; i++) { var greenMaterial:ColorMaterial = new ColorMaterial(0x00cc00); var plane:Plane = new Plane(greenMaterial); plane.x = Math.random() * 6000 - 3000; plane.y = Math.random() * 6000 - 3000; plane.z = Math.random() * 6000; scene.addChild(plane); } startRendering(); trace("hit the space bar to reset visible planes to green"); stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler); } protected function keyDownHandler(event:KeyboardEvent):void { //reset all the visible to green when you hit space if(event.keyCode == Keyboard.SPACE) { for each(var plane:Plane in scene.children) { plane.material.fillColor = 0xc00cc00; } } } override protected function onRenderTick(event:Event=null):void { super.onRenderTick(event); for each(var plane:Plane in scene.children) { //if it's culled change to red if(plane.culled) { plane.material.fillColor = 0xcc0000; } } } } } |
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