forked from: Scanner

/**
 * Copyright mapache ( http://wonderfl.net/user/mapache )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/5ze4
 */

// forked from miyaoka's Scanner
package 
{
    /*
     * iPhoneカメラとかが歪むあれ
     * http://labaq.com/archives/51250054.html
     */ 
    import flash.display.*;
    import flash.events.*;
    import flash.geom.*;
    import caurina.transitions.Tweener;
    import com.bit101.components.Slider;
    import flash.net.URLRequest;
    import flash.system.LoaderContext;
    import flash.utils.Timer;
    import com.bit101.components.PushButton;
    import com.bit101.components.Label;
    import com.bit101.components.Style;
    import com.adobe.images.PNGEncoder;
    import flash.net.FileReference;    
    import flash.utils.ByteArray;
    
    [SWF(width = "465", height = "465", backgroundColor = 0xFFFFFF, frameRate = "60")]
    
    public class Scan extends Sprite 
    {
        private var screen:Sprite = new Sprite();
        private var scanBmp:Bitmap = new Bitmap();
        private var effect:Shape = new Shape();
        private var menu:Sprite = new Sprite();
        
        public function Scan() 
        {            
            addChild(screen);
            screen.alpha = 0.1;
            screen.x = stage.stageWidth / 2;
            screen.y = stage.stageHeight / 2;
            
            addChild(scanBmp);
            addChild(effect);
            addChild(menu);
            
            screen.addChild(new Rect(200, 200));
            
            var loader:Loader = new Loader();
            loader.load(new URLRequest("http://farm3.static.flickr.com/2608/3839475460_66c5e7637e_o.png"), new LoaderContext(true));
            
            
            //menus
            var propellerLbl:Label = new Label(menu, 10, 0, "Rotation freq. (cycle / sec)");
            
            var propellerFreq:SliderWithLabel = new SliderWithLabel(Slider.HORIZONTAL, menu, 20, 30);
            propellerFreq.width = 400;
            propellerFreq.height = 12;
            propellerFreq.backClick = true;
            propellerFreq.fractionDigits = 3;
            propellerFreq.setSliderParams( -4, 4, 0.025);
            
            var scannerLbl:Label = new Label(menu, 10, 400, "Scanner delay /row [ms]");
            
            var scanDelay:SliderWithLabel = new SliderWithLabel(Slider.HORIZONTAL, menu, 20, 430);
            scanDelay.width = 300;
            scanDelay.height = 12;
            scanDelay.backClick = true;
            scanDelay.fractionDigits = 3;
            scanDelay.setSliderParams( 0, 60000 / stage.stageHeight, 5000 / stage.stageHeight);
            
            var row:int = 0;
            var eg:Graphics = effect.graphics;
            var scanTimer:Timer = new Timer(1);
            var bmd:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000);
            scanTimer.addEventListener(TimerEvent.TIMER, function ():void 
            {
                scanTimer.delay = scanDelay.value;
                //draw 1px row
                var mtx:Matrix = new Matrix()
                mtx.rotate( screen.rotation / 180 * Math.PI);
                mtx.translate(screen.x, screen.y);
                
                bmd.draw(screen, mtx, null, null, new Rectangle(0, row, bmd.width, 1));
                //draw scan effect
                eg.clear();
                eg.lineStyle(1, 0xff0000);
                eg.moveTo(0, row);
                eg.lineTo(bmd.width, row);
                if (++row > stage.stageHeight) 
                {
                    scanTimer.reset();
                }
            });

            //cmd
            var scanBtn:PushButton = new PushButton(menu, 340, 375, "scan", function ():void 
            {
                row = 0;
                scanClear();
                scanTimer.start();                
            });
            scanBtn.width = 120;
            scanBtn.height = 30;
            new PushButton(menu, 350, 410, "clear", function ():void 
            {
                scanClear();
            });
            new PushButton(menu, 350, 430, "save img", function ():void 
            {
                //save PNG to local
                var ba:ByteArray = PNGEncoder.encode(bmd);
                var fr:FileReference = new FileReference;
                fr.save(ba, "scanner" + new Date().valueOf().toString() + ".png");
            });

            //shapes
            new PushButton(menu, 350, 60, "achamo", function ():void 
            {
                while (screen.numChildren) screen.removeChildAt(0); 
                screen.addChild(loader);
                loader.x = -loader.width / 2;
                loader.y = -loader.height / 2;
            });
            new PushButton(menu, 350, 80, "propeller", function ():void 
            {
                while (screen.numChildren) screen.removeChildAt(0); 
                screen.addChild(new Rose(150, 4,1 ));
            });
            new PushButton(menu, 350, 100, "random rose", function ():void 
            {
                while (screen.numChildren) screen.removeChildAt(0); 
                screen.addChild(new Rose(150, Math.random()*10 + 1,Math.random()*10+1));
            });
            new PushButton(menu, 350, 120, "random rect", function ():void 
            {
                while (screen.numChildren) screen.removeChildAt(0); 
                screen.addChild(new Rect(Math.random()*300+100, Math.random()*300+100));
            });
            
            function scanClear():void 
            {
                bmd = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000);
                scanBmp.bitmapData = bmd;                
            }
            
            
            var timer:Timer = new Timer(1000/stage.frameRate);
            timer.addEventListener(TimerEvent.TIMER, function ():void 
            {
                screen.rotation += propellerFreq.value * timer.delay / 1000 * 360
            });
            timer.start();
        }
        
    }
    
}
import flash.display.*;
import flash.events.*;
import flash.geom.*;
import caurina.transitions.Tweener;
import com.bit101.components.Slider;
import com.bit101.components.Label;

class SliderWithLabel
extends Slider
{
    private var valueLabel:Label;
    private var _fractionDigits:uint = 0;
    public function set fractionDigits(f:uint):void
    {
        _fractionDigits = f;
        drawLabel();
    }
    public function get fractionDigits():uint
    {
        return _fractionDigits;
    }
    public function SliderWithLabel(orientation:String = Slider.HORIZONTAL, parent:DisplayObjectContainer = null, xpos:Number = 0, ypos:Number =  0, defaultHandler:Function = null)
    {
        super(orientation, parent, xpos, ypos, defaultHandler);
    }
    override protected function init():void
    {
        super.init();
        
        valueLabel = new Label(this);
        drawLabel();
        positionHandle();
        if (_orientation == HORIZONTAL)
        {
            valueLabel.y = _handle.y - valueLabel.height;
        }
        else
        {
            drawHandle();
            valueLabel.x = _handle.x + _handle.width + 4;
        }
        
        addEventListener(Event.CHANGE, function ():void 
        {
            drawLabel()
        });
    }
    private function drawLabel():void 
    {
        valueLabel.text = value.toFixed(fractionDigits);
        if(_orientation == HORIZONTAL)
        {
            valueLabel.x = _handle.x;
        }
        else
        {
            valueLabel.y = _handle.y;
        }
    }
    override public function set value(v:Number):void
    {
        super.value = v;
        dispatchEvent(new Event(Event.CHANGE));
    }
}
class Rose extends Shape
{
    public function Rose(radius:Number,n:uint,d:uint)
    {
        var c:Number = n/d;
        var g:Graphics = graphics;
        g.lineStyle(2, 0xcccccc);
        g.beginFill(0x0);
            
        for(var i:uint=0; i<360*d; i+=2)
        {
            var rad:Number = i * Math.PI /180;
            var v:Number = Math.sin(c * rad);
            var r:Number = radius * v;
                
            var x:Number = r * Math.cos(rad);
            var y:Number = r * Math.sin(rad);
                
            g.lineTo(x,y);
        }
        g.endFill();
    }
}
class Rect extends Shape
{
    public function Rect(w:Number, h:Number)
    {
        var g:Graphics = graphics;
        g.lineStyle(2, 0xcccccc);
        g.beginFill(0x0);
        g.drawRect( -w/2, -h/2, w, h);
        g.endFill();
    }
}