Figuiring out Bitmap rendering

programming
1

So I started a project that has physics and lots of small particles, most were movieclips so needless to say, the framerate became a issue. Now I’m trying to learn how to render the stage with bitmapData but it it’s a bit complicated. Here’s what I have now, and it works, but I’m not 100% comfortable with how this all works or even if I’m going about it the right way.

public class Main extends Sprite {
		
	public var Objects:Array = new Array();
	public var RenderBuffer:BitmapData = new BitmapData(stage.stageWidth,stage.stageHeight,true,0x00000);
	public var hero:Hero = new Hero();	
	
		public function Main(){
			addEventListener(Event.ENTER_FRAME, Loop);
			addChild(new Bitmap(RenderBuffer));	
			Objects.push(hero);			
		}
		
		public function Loop(e:Event):void{	
			for (var i:uint = 0 ; i < Objects.length ; i++){
				//Update				
				Objects*.x += Objects*.velocity.x;
				Objects*.y += Objects*.velocity.y;
				//Render
				var tempBuffer:BitmapData = new BitmapData(Objects*.width,Objects*.height,true)
				tempBuffer.draw(Objects*);
				RenderBuffer.fillRect(RenderBuffer.rect,0x000000);
				RenderBuffer.copyPixels(tempBuffer,tempBuffer.rect,new Point(Objects*.x,Objects*.y));						
			}			
		}

*the Hero class is a graphic in my library

So basically what im doing is cycling through all my current active objects, creating a temp bitmapdata object to render the graphic, then copying that temp bitmapData onto my main renderer and positioning it correctly.

Seems a bit tideous, but am I going about this the right way? Also, how does creating animating graphics work?