forked from: GradientFill center follow with mouse

by EdMan 11 Jul 2010

• Forked from esabear's GradientFill center follow with mouse
• Diff: 20
• Related works: 2

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超炫效果
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/**
 * Copyright EdMan ( http://wonderfl.net/user/EdMan )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/mSeO
 */

// forked from esabear's GradientFill center follow with mouse
package {
    import flash.geom.Point;
    import flash.geom.Matrix;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import flash.display.GradientType;
    import flash.display.SpreadMethod;
    import flash.display.InterpolationMethod;
    
    public class FlashTest extends Sprite {
        public var fillColor:int = 0x0000FF;
        public function FlashTest() {
            // write as3 code here..
            stage.addEventListener (MouseEvent.MOUSE_MOVE, redraw);
            stage.addEventListener (MouseEvent.CLICK, changeColor);
            changeColor ();
            redraw ();
        }
        
        private function redraw (e:MouseEvent=null):void {
        var mouse:Point = new Point (mouseX, mouseY);
        var center:Point = new Point (stage.stageWidth  * 0.5, stage.stageHeight * 0.5);
        var matrix:Matrix = new Matrix();
        matrix.createGradientBox (stage.stageWidth * 2, stage.stageHeight * 2, Math.atan2 (mouseY-center.y, mouseX-center.x), -center.x, -center.y);
    
        graphics.clear ();
        graphics.beginGradientFill (
        GradientType.RADIAL,
        [fillColor, 0x000000],
        [1, 1],
        [0x00, 0xFF],
        matrix,
        SpreadMethod.PAD,
        InterpolationMethod.RGB,
        Point.distance(mouse, center) / stage.stageWidth
        );
        graphics.drawRect (0, 0, stage.stageWidth, stage.stageHeight);
        graphics.endFill ();
        }

        private function changeColor (e:MouseEvent=null):void {
            fillColor = 0xFFFFFF * Math.random();
        }
    }
}