package
{
	import flash.display.*;
	import flash.events.*;
	import flash.utils.*;
	
	import fl.controls.*;
	import fl.data.DataProvider;	
	public class Main extends Sprite
	{
		
		public var carver:Carving;
		
		public var src:BitmapData;
		public var bmp:Bitmap;
		public var bmpd:BitmapData;
		public var _bmp:Bitmap;
		
		public var btn:Button;
		public var energy:Button;
		public var rendering:Boolean=false;
		
		public function Main():void
		{
			stage.align = 'TL';
			stage.scaleMode = 'noScale';
			
			//image
			var image:Class = getDefinitionByName('Image') as Class;
			src = new image( 0,0 );
			bmp = new Bitmap( src );
			addChild( bmp );
			
			bmpd = src.clone();
			_bmp = new Bitmap( bmpd );
			_bmp.blendMode  = 'alpha';
			addChild( _bmp );
			
			//boutons
			btn = new Button();
			btn.label = 'render';
			btn.x = src.width - btn.width;
			btn.y = src.height;
			addChild( btn );
			btn.addEventListener(MouseEvent.CLICK, clickHandler );
		
			// montrer cacher l'energy Map (! rafraichit en fonction du refreshRate )
			energy = new Button();
			energy.label = 'energgy';
			energy.x = btn.x - energy.width;
			energy.y = btn.y;
			addChild( energy );
			energy.addEventListener(MouseEvent.CLICK, energyHandler );
			
			
			
			
			//frequence de rafraîchissement de l'energy map
			Carving.refreshRate = 10;
			
			// filtre utilise pour la detection de contours
			Carving.filterType = 'PREWITT';//'SOBEL';//
			
			//valeur du seuil
			Carving.threshold = 0xFF666666;
			
			// initialise le carving
			carver = new Carving( src );
			carver.getImage(bmpd);
			
			
			addEventListener( Event.ENTER_FRAME, update );
			
		}
		
		
		function clickHandler( e:Event ):void
		{
			
			rendering = !rendering ? true : false;
			
		}
		function energyHandler( e:Event ):void
		{
			
			switch( _bmp.blendMode )
			{
				case 'alpha':
				_bmp.blendMode = 'normal';
				break;
				
				case 'normal':
				_bmp.blendMode = 'alpha';
				break;
			}
			
			bmpd.draw( carver.out );
				
		}
		
		
		function update(e:Event ):void
		{
			var limit:int = src.width / 3+15;
			if( rendering )
			{
				if( carver.width > limit )
				{
					carver.resize( carver.width-1, carver.height);
					
				}else{
					
					removeEventListener( Event.ENTER_FRAME, update );
				}
			}
		}
	
	}
}