[朝ワン] Matrix の勉強

朝からワンダフルで朝方生活になる！朝ワン！
Matrix の勉強!
クリック！

by bkzen 30 Jun 2009

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

package {
    import com.flashdynamix.motion.Tweensy;
    import flash.display.Shape;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.geom.Matrix;
    import flash.geom.Point;
    
    /**
     * 朝からワンダフルで朝方生活になる！朝ワン！
     * Matrix の勉強!
     * クリック！
     */
    public class FlashTest extends Sprite 
    {
        private var sp: Sprite;
        private var mode: int;
        private var points: Array = [];
        private var shapes: Array = [];
        
        public function FlashTest() {
            // write as3 code here..
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }
        private function init(e: Event = null): void 
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            
            sp = new Sprite();
            for (var ix: int = 0; ix < 6; ix++) 
            {
                for (var iy: int = 0; iy < 4; iy++) 
                {
                    var sh: Shape = new Shape();
                    sh.graphics.beginFill(0xFF0000, 1);
                    sh.graphics.drawCircle(0, 0, 10);
                    sh.x = ix * 50;
                    sh.y = iy * 50;
                    sp.addChild(sh);
                    points.push(new Point(sh.x, sh.y));
                }
            }
            sp.x = 40;
            sp.y = 40;
            addChild(sp);
            stage.addEventListener(MouseEvent.CLICK, onClick);
            mode = 0;
        }
        
        private function onClick(e: MouseEvent): void 
        {
            var i: int, n: int, sh: Shape;
            switch (mode)
            {
                case 0:
                    sp.transform.matrix = new Matrix(0.91, 0.42, -0.71, 0.71, 150, 60);
                break;
                case 1:
                    n = points.length;
                    for (i = 0; i < n; i ++) 
                    {
                        sh = new Shape();
                        sh.x = points[i].x;
                        sh.y = points[i].y;
                        sh.graphics.beginFill(0x0000FF, 1);
                        sh.graphics.drawCircle(0, 0, 5);
                        addChild(sh);
                        shapes.push(sh);
                    }
                break;
                case 2:
                    n = points.length;
                    var matrix: Matrix = new Matrix(0.91, 0.42, -0.71, 0.71, 150, 60);
                    for (i = 0; i < n; i ++) 
                    {
                        sh = shapes[i];
                        var ix: int = i / 4;
                        var iy: int = i % 4;
                        Tweensy.to(sh, { x: ix * 50 * matrix.a + iy * 50 * matrix.c + matrix.tx }, 2 );
                        Tweensy.to(sh, { y: ix * 50 * matrix.b + iy * 50 * matrix.d + matrix.ty }, 2 );
                        
                    }
                break;
            }
            mode ++;
        }
    }
}