forked from: flash on 2009-7-20
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title : Ripple
波紋効果の練習
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/**
* Copyright vasari ( http://wonderfl.net/user/vasari )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/ezrm
*/
// forked from bikota's flash on 2009-7-20
//-----------------------------------------------------
// title : Ripple
// 波紋効果の練習
//-----------------------------------------------------
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.BitmapDataChannel;
import flash.display.BlendMode;
import flash.display.Loader;
import flash.display.Sprite;
import flash.display.StageQuality;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.filters.ConvolutionFilter;
import flash.filters.DisplacementMapFilter;
import flash.filters.DisplacementMapFilterMode;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.net.URLRequest;
import flash.system.LoaderContext;
[SWF(backgroundColor="0x000000", frameRate="60")]
public class AnimationsProject extends Sprite
{
private const IMAGE_URL:String = "http://farm4.static.flickr.com/3598/3519160266_597a6fd570_b.jpg";
private const RIPPLE_SIZE:int = 20; //波紋サイズ
private const BUFFER_SCALE:Number = .2; //バッファ用ビットマップのサイズ
private var _sample:Bitmap;
private var _buffer1:BitmapData;
private var _buffer2:BitmapData;
private var _defData:BitmapData;
private var _scale:Number;
private var _matrix:Matrix;
private var _fullRect:Rectangle;
private var _drawRect:Rectangle;
private var _origin:Point;
private var _filter:DisplacementMapFilter;
private var _convoFilter:ConvolutionFilter;
private var _colorTransform:ColorTransform;
public function AnimationsProject()
{
init();
}
private function init():void
{
stage.quality = StageQuality.MEDIUM;
var req:URLRequest = new URLRequest(IMAGE_URL);
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadComplete);
loader.load( req, new LoaderContext(true));
}
private function loadComplete(e:Event):void
{
e.target.removeEventListener(Event.COMPLETE, loadComplete);
var sw:int = stage.stageWidth;
var sh:int = stage.stageHeight;
// 読み込んだ画像を一旦リサイズ
var source:Bitmap = e.target.loader.content as Bitmap;
var resizeData:BitmapData = new BitmapData(sw, sh);
source.width = sw;
source.height = sh;
resizeData.draw( source );
_sample = new Bitmap(resizeData);
addChild(_sample);
// ちょっと傾ける
rotationX = -45;
_buffer1 = new BitmapData(_sample.width*BUFFER_SCALE, _sample.height*BUFFER_SCALE, false, 0x000000);
_buffer2 = new BitmapData(_buffer1.width, _buffer1.height, false, 0x000000);
_defData = new BitmapData(_sample.width, _sample.height, false, 0x7f7f7f);
_fullRect = new Rectangle(0, 0, _buffer1.width, _buffer1.height);
_drawRect = new Rectangle();
_filter = new DisplacementMapFilter(_buffer1, new Point(), BitmapDataChannel.BLUE, BitmapDataChannel.BLUE, 50, 50, DisplacementMapFilterMode.WRAP);
_sample.filters = [_filter];
addEventListener(Event.ENTER_FRAME, enterFrameHandler);
_convoFilter = new ConvolutionFilter(3, 3, [0.5, 1, 0.5, 1, 0, 1, 0.5, 1, 0.5], 3);
_colorTransform = new ColorTransform(1, 1, 1, 1, 0, 128, 128);
_matrix = new Matrix(_defData.width/_buffer1.width, 0, 0, _defData.height/_buffer1.height);
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseHandler);
}
private function mouseHandler(e:MouseEvent):void
{
var rad:int = RIPPLE_SIZE/2 * -1;
_drawRect.x = ( rad + _sample.mouseX ) * BUFFER_SCALE;
_drawRect.y = ( rad + _sample.mouseY ) * BUFFER_SCALE;
_drawRect.width = _drawRect.height = RIPPLE_SIZE * BUFFER_SCALE;
_buffer1.fillRect(_drawRect, 0xFF);
}
private function enterFrameHandler(event : Event) : void
{
var temp:BitmapData = _buffer2.clone();
_buffer2.applyFilter(_buffer1, _fullRect, new Point(), _convoFilter);
_buffer2.draw(temp, null, null, BlendMode.SUBTRACT, null, false);
_defData.draw(_buffer2, _matrix, _colorTransform, null, null, true);
_filter.mapBitmap = _defData;
_sample.filters = [_filter];
temp.dispose();
switchBuffers();
}
// バッファの入れ替え
private function switchBuffers():void
{
var temp : BitmapData;
temp = _buffer1;
_buffer1 = _buffer2;
_buffer2 = temp;
}
}
}