Noize

**********************************************
code by yonedashigeru
http://wab.cc/
**********************************************

yonedashiger..

forked:7
favorite:27
lines:71
license : All rights reserved
modified : 2008-12-19 20:28:31

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//**********************************************  
// 
// code by yonedashigeru  
//  
// http://wab.cc/  
//  
//**********************************************

package {

import flash.display.*;
	import flash.events.*;
	import flash.geom.*;
	import flash.utils.*;
	import flash.text.*;
	
	import flash.filters.*;
	import caurina.transitions.Tweener;
        
	public class Main extends Sprite{
		
		public var cover_sp:Sprite;
		
		private var r_bmd:BitmapData;
		private var r_bm:Bitmap;
		private var g_bmd:BitmapData;
		private var g_bm:Bitmap;
		private var b_bmd:BitmapData;
		private var b_bm:Bitmap;
		
		private var target:TextField;
		private var mod:String;
		
		private var noise_map:Array;
		private var map_num:int = 3;
		private var dfil:DisplacementMapFilter;
		
		
		public var delay:Number = 100;
		
		
		/*======================================================================*//**
		* コンストラクタ
		*/
		public function Main() 
		{
			
			target = new TextField();
                        target.text = "YONEDA";
			
			var _tf:TextFormat = new TextFormat();
			_tf.size = 100;
			_tf.color = 0x000000;
			target.setTextFormat(_tf);
			
			
			target.autoSize = TextFieldAutoSize.LEFT;
			mod = BlendMode.DARKEN;

var tmp_w:Number = target.width;
			var tmp_h:Number = target.height;
			
			
			r_bmd = new BitmapData(tmp_w, tmp_h, true, 0);
			r_bmd.draw(target, null, null, null, null, true);
			r_bm = new Bitmap(r_bmd);
			r_bm.transform.colorTransform = new ColorTransform(1, 1, 1, 1, 0, 255, 255, 0);
			r_bm.blendMode = mod;
			
			g_bmd = new BitmapData(tmp_w, tmp_h, true, 0);
			g_bmd.draw(target, null, null, null, null, true);
			g_bm = new Bitmap(g_bmd);
			g_bm.transform.colorTransform = new ColorTransform(1, 1, 1, 1, 255, 0, 255, 0);
			g_bm.blendMode = mod;
			
			b_bmd = new BitmapData(tmp_w, tmp_h, true, 0);
			b_bmd.draw(target, null, null, null, null, true);
			b_bm = new Bitmap(b_bmd);
			b_bm.transform.colorTransform = new ColorTransform(1, 1, 1, 1, 255, 255, 0, 0);
			b_bm.blendMode = mod;
			
			
			cover_sp = new Sprite();
			cover_sp.addChild(r_bm);
			cover_sp.addChild(g_bm);
			cover_sp.addChild(b_bm);
                        cover_sp.x = (stage.stageWidth - cover_sp.width) / 2;
                        cover_sp.y = (stage.stageHeight - cover_sp.height) / 2;
			addChild(cover_sp);
			
			start();
		}
		/*======================================================================*//**
		* start
		*/
		public function start():void
		{
				
			createNoise();
			
			dfil = new DisplacementMapFilter(null, new Point(0,0), BitmapDataChannel.RED, BitmapDataChannel.RED, 5, 0);
			cover_sp.filters = [dfil];
			
			cover_sp.addEventListener(Event.ENTER_FRAME, onEnter);
			
		}
		
		private var tm_index:int = 0;
		
		/*======================================================================*//**
		* onEnter
		*/
		private function onEnter(e:Event) :void
		{
			var tmp_fill:DisplacementMapFilter = cover_sp.filters[0];
			
			var tmp_num:int = Math.floor(Math.random() * noise_map.length);
			tmp_fill.mapBitmap = noise_map[tmp_num];
			cover_sp.filters = [tmp_fill];
			
			r_bm.x = Math.random() * 10 - 5;
			g_bm.x = Math.random() * 10 - 5;
			b_bm.x = Math.random() * 10 - 5;
		}
		/*======================================================================*//**
		* createNoise
		*/
		private function createNoise() :void
		{
			noise_map = new Array();
			
			for(var i:int=0; i<map_num; i++)
			{
				var tmp_bmd:BitmapData = new BitmapData(target.width, target.height, false, 0x808080);
				tmp_bmd.noise(Math.floor(Math.random() * 10), 0, 255, 7, true);
				for(var j:int=0; j<tmp_bmd.width; j++)
				{
					tmp_bmd.scroll(1, 0);
				}
				
				noise_map.push(tmp_bmd);
			}
			
		}
	}
}

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