package{
	import flash.display.Sprite;
	import flash.events.Event;
	
	import org.papervision3d.cameras.Camera3D;
	import org.papervision3d.render.BasicRenderEngine;
	import org.papervision3d.scenes.Scene3D;
	import org.papervision3d.view.Viewport3D;
	
	public class pv3d_base extends Sprite{
		
		public var viewport:Viewport3D// O Viewport
		public var render:BasicRenderEngine// A engine para renderizar ou Rendering Engine
		public var default_scene:Scene3D// Uma Scene
		public var default_camera:Camera3D// Um Câmera
				
		
		public function pv3d_base(){
		}
		
		public function init(largura:Number, altura:Number):void {
			
			initPapervision(largura, altura);// Inicializa o papervision
			init3d();// Inicializa objetos 3d
			initEvents();// Seta qualquer event listeners..
		}
		
		protected function initPapervision(largura:Number, altura:Number):void {
			
			viewport = new Viewport3D(largura, altura, false, true) // adiciona o viewport
			
			addChild(viewport)// Adiciona o viewport no stage...
			
			render = new BasicRenderEngine() // inicia o render
			
			default_scene = new Scene3D();
			
			default_camera = new Camera3D();// foco da camera
		}
		
		protected function init3d():void {
			//conteudo da cena
		}
		
		protected function initEvents():void {
			addEventListener(Event.ENTER_FRAME, onEnterFrame);
		}
		
		protected function processa():void {
			// roda as animações
		}
		
		protected function onEnterFrame( ThisEvent:Event ):void {
			//renderiza e chama a fucnao processa
			processa()
			render.renderScene(default_scene, default_camera, viewport)
		}
		
	}
}