Harry Northover – The Blog

package {
 
	import away3d.cameras.HoverCamera3D;
	import away3d.containers.Scene3D;
	import away3d.containers.View3D;
	import away3d.primitives.Sphere;
 
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
 
	public class ThreeDParticle extends Sprite {
 
		public var cam:HoverCamera3D = new HoverCamera3D;
		public var scene:Scene3D = new Scene3D;
		public var view:View3D = new View3D( { x:550, y:400, scene:scene, camera:cam } );
		public var numOfDots:Number = 50;
		public var sphere:Sphere;
		public var cameraSpeed:Number = 0.3; // Approximately same speed as mouse movement.
 
		public var lastPanAngle:Number;
		public var lastTiltAngle:Number;
		public var lastMouseX:Number;
		public var lastMouseY:Number;
		public var move:Boolean;
 
		public function ThreeDParticle():void {
			// This is added so you can include this SWF in another.
			this.addEventListener(Event.ADDED_TO_STAGE, Init);
		}
 
		private function Init(evt:Event):void {
			addChild(view);
 
			cam.zoom = 1;
			cam.x = 0;
			cam.y = 0;
 
			for (var i:uint = 0; i <= numOfDots; i++) {
				sphere = new Sphere( { material:"black#red", radius:20, x:Math.random() * 1000, y:Math.random() * 1000, z:Math.random() * 100, segmentsH:10, segmentsW:10 } );
				view.scene.addChild(sphere);
			}
			this.addEventListener(Event.ENTER_FRAME, enterFrame);
			this.stage.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
			this.stage.addEventListener(MouseEvent.MOUSE_UP, mouseLeave);
 
			view.render();
		}
 
		private function enterFrame(evt:Event):void {
			if (move) {
				cam.targetpanangle = cameraSpeed * (this.stage.mouseX - lastMouseX) + lastPanAngle;
				cam.targettiltangle = cameraSpeed * (this.stage.mouseY - lastMouseY) + lastTiltAngle;
			}
 
			cam.hover();
			view.render();
		}
 
		private function mouseDown(evt:MouseEvent):void {
 
			move = true;
			lastPanAngle = cam.targetpanangle;
			lastTiltAngle = cam.targettiltangle;
			lastMouseX = stage.mouseX;
			lastMouseY = stage.mouseY;
 
			cam.hover();
			view.render();
		}
 
		private function mouseLeave(evt:MouseEvent):void {
			move = false;
		}
 
	}
}