rubberband

/**
 * Copyright russ ( http://wonderfl.net/user/russ )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/rA7g
 */

package
{
import flash.display.*;
import flash.events.MouseEvent;
import flash.utils.*;
import flash.text.*;

public class rubberband extends Sprite
{
    private var _shapes:Vector.<Shape> = new Vector.<Shape>;
    private var _MouseDown:Boolean;
    private var _box:Shape = new Shape(); // the rubber band
    private var _StartX:Number, _StartY:Number;

    public function rubberband()
    {
        stage.align = StageAlign.TOP_LEFT;
        stage.scaleMode = StageScaleMode.NO_SCALE;
        _DrawShapes();

        stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
        stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
        stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);

        this.addChild(_box);
        _box.blendMode = BlendMode.NORMAL; //DIFFERENCE; // gets set color on white (or black) background
        _box.x = _box.y = 0;

        stage.color = 0;//0xFFFFFF;
    }

    private function onMouseDown(e:MouseEvent):void {
        _MouseDown = true;
        _box.graphics.clear();
        _StartX = e.localX;
        _StartY = e.localY;
    }

    private function onMouseMove(e:MouseEvent):void {
        if (!_MouseDown) {
            return;
        }
        with (_box.graphics) {
            clear();
            lineStyle(0, 0xFFFFFF); // for red line on given background (with 'DIFFERENCE' blendmode)
            beginFill(0, 0.4);
            drawRect(_StartX, _StartY, e.localX - _StartX, e.localY - _StartY);
        }
    }

    private function onMouseUp(e:MouseEvent):void {
        _MouseDown = false;
    }

    private function _DrawShapes():void {
        var shape:Shape;
        for(var i:uint = 0; i < 200; i++) {
            shape = new Shape();
            shape.graphics.clear();
            shape.graphics.beginFill((Math.random() < 0.75) ? 0x000000 : Math.random() * 0xFFFFFF);
            shape.graphics.drawRect(0, 0, Math.random() * 50, Math.random() * 50);
            shape.graphics.endFill();
            shape.x = Math.random() * 300;
            shape.y = Math.random() * 300;
            shape.rotation = Math.random() * 90;
            _shapes.push(shape);
            this.addChild(shape);
        }
    }
}
}