package
{
	import flash.display.BitmapData;
	import flash.display.Shape;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.filters.BlurFilter;
	import flash.geom.ColorTransform;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.media.Sound;
	import flash.media.SoundMixer;
	import flash.utils.ByteArray;
 
	import org.papervision3d.materials.ColorMaterial;
	import org.papervision3d.materials.utils.MaterialsList;
	import org.papervision3d.objects.DisplayObject3D;
	import org.papervision3d.objects.primitives.Cube;
	import org.papervision3d.view.BasicView;
	import org.papervision3d.view.BitmapViewport3D;
 
	[SWF(width="640", height="480", backgroundColor="#000000", frameRate="60")]
	public class Papervision3DSoundSpectrum extends BasicView
	{
		[Embed(source="assets/WolfParade-CallItARitual.mp3")]
		private var soundAsset:Class;	
 
		private const HEIGHT:int = 800;
		private const blur:BlurFilter = new BlurFilter(3, 3, 2);
		private const alphaTrans:ColorTransform = new ColorTransform(1, 1, 1, 1, 4, 5, 3, -10);
 
		private var point:Point = new Point();
		private var bytes:ByteArray = new ByteArray();
		private var sound:Sound;
		private var gradient:Array;
 
		private var bitmapViewport:BitmapViewport3D;
 
		public var layout:ILayout;
		public var circleLayout:CircleLayout;
		public var lineLayout:LineLayout;
		public var squareLayout:SquareLayout;
 
		public var cubes:Array = [];
		public static const CHANNELS:int = 40;
 
		public function Papervision3DSoundSpectrum()
		{
			sound = new soundAsset() as Sound;
			sound.play();
 
			//we'll need a bitmapViewport to access bitmapData
			bitmapViewport = new BitmapViewport3D();
			//allow the blurring
			bitmapViewport.fillBeforeRender = false;
			addChild(bitmapViewport);
 
			camera.extra = {goPosition: DisplayObject3D.ZERO, goTarget: DisplayObject3D.ZERO};
			camera.x = 0, camera.y = 300, camera.z = 500; 
			camera.zoom = 10;
 
			gradient = createColors();
			createCubes();
 
			startRendering();
			stage.addEventListener(MouseEvent.MOUSE_DOWN, onClick);
 
			circleLayout = new CircleLayout(this);
			lineLayout = new LineLayout(this);
			squareLayout = new SquareLayout(this);
 
			layout = circleLayout;
			layout.setAndAssignNext();
		}
 
		private function createColors(): Array
		{
			var gradient: Array = new Array();
 
			var shape:Shape = new Shape();
			var bitmapData:BitmapData = new BitmapData( 256, 1, true, 0 );
 
			var colors:Array = [0xff0000, 0xff0000, 0xffff00, 0x00ff00, 0x00ffff];
			var alphas:Array = [100, 100, 100, 100, 100];
			var ratios:Array = [0, 16, 128, 192, 255];
 
			var matrix:Matrix = new Matrix();
 
			matrix.createGradientBox(CHANNELS, 1, 0, 0, 0 );
 
			shape.graphics.beginGradientFill('linear', colors, alphas, ratios, matrix);
			shape.graphics.drawRect(0, 0, CHANNELS, 1);
			shape.graphics.endFill();
 
			bitmapData.draw(shape);
 
			for(var i:int = 0; i < CHANNELS; i++)
			{
				gradient[i] = bitmapData.getPixel32(i, 0);
			}
 
			return gradient;
		}
 
		private function createCubes():void
		{
			var cubeMaterial:ColorMaterial;
 
			var angleOffset:Number = Math.PI*2/CHANNELS;
			var radius:Number = 400;
			var angle:Number = 180;
 
			var cubeX:Number, cubeZ:Number;
			var cube:Cube;
 
			for(var i:int =0;i<CHANNELS;i++)
			{
				cubeMaterial = new ColorMaterial(gradient[i]);
				cubeMaterial.lineColor = 0x222222;
				cubeMaterial.lineAlpha = 1;
				cubeX = Math.cos(angle)*radius;
				cubeZ = Math.sin(angle)*radius;
 
				var materialsList:MaterialsList = new MaterialsList();
				materialsList.addMaterial(cubeMaterial, "all");
 
				cube = new Cube(materialsList, 50, 50, HEIGHT);
 
				cubes[i] = cube;		
				cubes[i].rotationY = 90;
				scene.addChild(cube);
			}
		}
 
		private function onClick(e:MouseEvent):void
		{
			layout.setAndAssignNext();
		}
 
		override protected function onRenderTick(event:Event = null):void
		{
			SoundMixer.computeSpectrum(bytes, true, 2);
			var channelModulo:int = int(256/CHANNELS);
 
			var average:Number = 0;
			var temp:Number = 0;
			var currentChannel:Number = 0;
 
			for(var i:int =1;i<=256;i++)
			{
				temp = bytes.readFloat();
				average += temp;
 
				if(i%channelModulo == 0)
				{
					//set the cur channel to this!
					if(currentChannel < cubes.length)
					{
						average /=channelModulo;
						if(average > cubes[currentChannel].scaleY)
						{
							cubes[currentChannel].scaleY = average;
						}
						else
						{
							cubes[currentChannel].scaleY -= 0.04;
							if(cubes[currentChannel].scaleY <= 0)
							{
								cubes[currentChannel].scaleY = 0;
							}
						}
						cubes[currentChannel].x += (cubes[currentChannel].extra.goX - cubes[currentChannel].x)/32;
						cubes[currentChannel].y = cubes[currentChannel].scaleY*HEIGHT/2;
						cubes[currentChannel].z += (cubes[currentChannel].extra.goZ - cubes[currentChannel].z)/32;
					}
 
					currentChannel++;
					average = 0;
				}
			}
 
			camera.orbit(bitmapViewport.containerSprite.mouseY, bitmapViewport.containerSprite.mouseX);
 
			renderer.renderScene(scene, camera, bitmapViewport);
			bitmapViewport.bitmapData.applyFilter(bitmapViewport.bitmapData, bitmapViewport.bitmapData.rect, point, blur);
			bitmapViewport.bitmapData.colorTransform(bitmapViewport.bitmapData.rect, alphaTrans);
		}
	}
}