package com.dougmccune.containers
{
	import caurina.transitions.Tweener;
	
	import flash.display.DisplayObject;
	import flash.events.Event;
	
	import mx.core.EdgeMetrics;
	
	import org.papervision3d.objects.DisplayObject3D;

	public class lib_flex_cover_com_dougmccune_containers_CarouselContainer extends BasePV3DContainer
	{
		override public function addChild(child:DisplayObject):DisplayObject {
			var child:DisplayObject = super.addChild(child);
		
			var plane:DisplayObject3D = lookupPlane(child);
			plane.material.doubleSided = true;
			
			var reflection:DisplayObject3D = lookupReflection(child);
			reflection.material.doubleSided = true;
			
			return child;
		}
		
		
		private var _angle:Number;
		
		public function set angle(value:Number):void {
			_angle = value;
			
			moveCamera();
			scene.renderCamera(camera);
		}
		
		public function get angle():Number {
			return _angle;
		}
		
		private function moveCamera():void {
			camera.x =  Math.cos(_angle) *(width);
   			camera.z =  Math.sin(_angle) *(width);
		}
		
		override protected function layoutChildren(unscaledWidth:Number, unscaledHeight:Number):void {
			super.layoutChildren(unscaledWidth, unscaledHeight);
			
			var numOfItems:int = this.numChildren;
			
			if(numOfItems == 0) return;
			
			var radius:Number = unscaledWidth-10;
			var anglePer:Number = (Math.PI*2) / numOfItems;
			
			for(var i:uint=0; i<numOfItems; i++)
			{
				//var childIndex:int = (selectedIndex + i) % numOfItems;
				var child:DisplayObject = getChildAt(i);
				
				var p:DisplayObject3D = lookupPlane(child);
				p.container.visible = true;
				
				var zPosition:Number = Math.sin(i*anglePer) * radius;
				var xPosition:Number = Math.cos(i*anglePer) * radius;
				var yRotation:Number = (-i*anglePer) * (180/Math.PI) + 270;
				
				p.x = xPosition;
				p.z = zPosition;
				p.rotationY = yRotation;
				
				if(reflectionEnabled) {
					var reflection:DisplayObject3D = lookupReflection(child);
					reflection.x = xPosition;
					reflection.z = zPosition;
					reflection.y = -child.height - 2;
					reflection.rotationY = yRotation;
				}
			}
			
			
			if(selectedChild) {
				var bm:EdgeMetrics = borderMetrics;
				
				selectedChild.x = unscaledWidth/2 - selectedChild.width/2 - bm.top;
				selectedChild.y = unscaledHeight/2 - selectedChild.height/2 - bm.left;
				
				selectedChild.visible = false;
			}
				
			var cameraAngle:Number = anglePer*selectedIndex;
			
			if(cameraAngle - _angle > Math.PI) {
				_angle += Math.PI*2;
				moveCamera();
			}
			else if(_angle - cameraAngle > Math.PI) {
				_angle -= Math.PI*2;
				moveCamera();
			}
			
			camera.zoom = 1 + 20/unscaledWidth;
			camera.focus = unscaledWidth/2;
			
			Tweener.addTween(this, {angle:cameraAngle, time:tweenDuration});
			
		}
		
		override protected function enterFrameHandler(event:Event):void {
			try {
				if(Tweener.isTweening(camera)){
					scene.renderCamera(camera);
				}
			}
			catch(e:Error) { }
		}
	}
}