Forked from:: keim_at_Si's Smoky text forked from: adobe challenge 1

forked from: Smoky text forked from: adobe challenge 1

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license : MIT License
modified : 2009-08-27 02:33:56

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// forked from keim_at_Si's Smoky text forked from: adobe challenge 1
package {
    import flash.display.*;
    import flash.events.*;
    import flash.geom.*;
    import flash.filters.*;
    
    public class main extends Sprite {
        private const FB:Number = 0.98;
        private var smokeField:Sprite = new Sprite();
        private var screen:BitmapData = new BitmapData(465, 465, false, 0);
        private var feedback:ColorTransform = new ColorTransform(FB, FB, FB, 1);
        private var blur:BlurFilter = new BlurFilter(4, 4);
        
        function main() {
            SmokyText.forceField.perlinNoise(465, 465, 4, Math.random()*10000, true, true);
            stage.addEventListener("keyDown", _onKeyDown);
            addEventListener("enterFrame", _onEnterFrame);
            addChild(new Bitmap(screen));
            smokeField.addChild(new SmokyText(232, 232, 0, "Smoky Text"));
        }
        
        private function _onKeyDown(e:KeyboardEvent) : void {
            smokeField.addChild(new SmokyText(r(200,232), r(200,232), r(180,-90), String.fromCharCode(e.charCode), 100));
        }
        
        private function _onEnterFrame(e:Event) : void {
            screen.colorTransform(screen.rect, feedback);
            screen.applyFilter(screen, screen.rect, screen.rect.topLeft, blur);
            screen.draw(smokeField);
        }
        
        private function r(range:Number, offset:Number) : Number {
            return (Math.random()-Math.random()) * range + offset;
        }
    }
}

import flash.display.*;
import flash.text.*;
import flash.events.*;
import flash.geom.*;
import flash.filters.*;

class SmokyText extends Shape {
    static public const FORCE:Number = 0.3;
    static public const ATTEN:Number = 0.99;
    static public var forceField:BitmapData = new BitmapData(465, 465, false, 0);
    static public var blur:BlurFilter = new BlurFilter(1, 2);
    public var source:BitmapData;
    public var vel:Vector.<Number> = new Vector.<Number>();
    public var vtx:Vector.<Number> = new Vector.<Number>();
    public var idx:Vector.<int>    = new Vector.<int>();
    public var uvt:Vector.<Number> = new Vector.<Number>();

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