package {

	import aether.effects.adjustments.LevelsEffect;
	import aether.effects.common.CompositeEffect;
	import aether.effects.filters.BlurEffect;
	import aether.effects.filters.ColorMatrixEffect;
	import aether.effects.texture.NoiseEffect;
	import aether.effects.transformations.GridEffect;

	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BlendMode;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.Matrix;

	[SWF(width=400, height=450, backgroundColor=0x666666)]

	/**
	* Demonstrates how frames from a loaded video can be drawn into bitmap data
	* so that visual effects may be applied.
	*/
	public class graphic_flex_image_effects_10_Flex_VideoFilters extends Sprite {

		public var _video:graphic_flex_image_effects_10_Flex_VideoLoader;
		public var _filteredScreen:Bitmap;

		/**
		* Constructor. Instantiates VideoLoader to load video, creates a bitmap/bitmap data
		* to display the video's frames and sets up a listener to know when the video frame changes.
		*/
		public function graphic_flex_image_effects_10_Flex_VideoFilters() {
			_video = new graphic_flex_image_effects_10_Flex_VideoLoader(400, 225, "graphic-flex-image-effects-10-assets-road.flv");
			_video.addEventListener(Event.RENDER, onVideoRender);
			addChild(_video);
			_filteredScreen = new Bitmap();
			_filteredScreen.y = _video.height;
			addChild(_filteredScreen);
		}

		/**
		* Handler for when the video frame updates. This draws the current video frame into the 
		* bitmap data and applies an image effect.
		*
		* @param event Event dispatched by VideoLoader.
		*/
		private function onVideoRender(event:Event):void {
			var bitmapData:BitmapData = new BitmapData(_video.width, _video.height);
			// draws video frame into bitmap data, making sure it is at proper scale
			var matrix:Matrix = new Matrix();
			matrix.scale(_video.scaleX, _video.scaleY);
			bitmapData.draw(_video, matrix);

			// comment/uncomment these lines to see different effects applied

				//new BlurEffect(5, 5, 1, BlendMode.SCREEN).apply(bitmapData);

				//new GridEffect(3, 3).apply(bitmapData);

				/*
				new CompositeEffect(
					[
					new LevelsEffect(50, 127, 200),
					new ColorMatrixEffect(ColorMatrixEffect.SEPIA),
					new NoiseEffect(0.2, BlendMode.MULTIPLY, 0.3)
					]
				).apply(bitmapData);
				*/

				//new DissolveEffect().apply(bitmapData);

				new graphic_flex_image_effects_10_Flex_PointillismEffect().apply(bitmapData);
				_filteredScreen.bitmapData = bitmapData;
		}

	}

}