package { import flash.display.Bitmap; import flash.display.Loader; import flash.display.LoaderInfo; import flash.display.MovieClip; import flash.display.Sprite; import flash.events.Event; import flash.geom.Point; import flash.net.URLRequest; import flash.system.LoaderContext; [SWF(width="465", height="465", frameRate="24", backgroundColor="0xFFFFFF")] public class ErasticPoint extends MovieClip { private var numRow:int = 31; private var numCol:int = 31; private var bmp:Bitmap; private var vertices:Vector.<Number>; private var uvtData:Vector.<Number>; private var indices:Vector.<int>; private var pts:Vector.<Point>; public function ErasticPoint() { addEventListener(Event.ADDED_TO_STAGE, addedToStage); } private function addedToStage(e:Event):void { removeEventListener(e.type, arguments.callee); var l:Loader = new Loader(); var c:LoaderContext = new LoaderContext(true); l.contentLoaderInfo.addEventListener(Event.COMPLETE, loaderCompleteHandler); l.load(new URLRequest('http://www.matzmtok.com/wonderfl/black_QP.png'), c); } private function loaderCompleteHandler(e:Event):void { var li:LoaderInfo = e.target as LoaderInfo; bmp = li.content as Bitmap; var w:Number = bmp.bitmapData.width; var h:Number = bmp.bitmapData.height; var iw:Number = w / numCol; var ih:Number = h / numRow; pts = new Vector.<Point>(); vertices = new Vector.<Number>(); uvtData = new Vector.<Number>(); indices = new Vector.<int>(); for ( var j:int = 0; j < numRow + 1; j++) { for (var i:int = 0; i < numCol + 1; i++) { pts.push(new Point(i * iw, j * ih)); vertices.push(i * iw); vertices.push(j * ih); uvtData.push(i * iw / w); uvtData.push(j * ih / h); } } for ( j = 0; j < numRow; j++) { for ( i = 0; i < numCol; i++) { indices.push( j * (numCol+1) + i, j * (numCol+1) + i + 1, (j + 1) * (numCol+1) + i, j * (numCol+1) + i + 1, (j + 1) * (numCol+1) + i, (j + 1) * (numCol+1) + i + 1); } } addEventListener(Event.ENTER_FRAME, enterFrame); } private function enterFrame(e:Event):void { var f:Point; graphics.clear(); for ( var i:int = 0; i < pts.length; i++) { f = getForce(pts[i]); vertices[int(i * 2)] = pts[i].x + f.x; vertices[int(i * 2) + 1] = pts[i].y + f.y; } graphics.beginBitmapFill(bmp.bitmapData); graphics.drawTriangles(vertices, indices, uvtData); graphics.endFill(); } private function getForce(p:Point):Point { var f:Point = new Point(); var dx:Number = p.x - mouseX; var dy:Number = p.y - mouseY; var pow:Number = dx * dx + dy * dy; if (pow < 20000) { pow = 20000; } f.x = dx; f.y = dy; f.normalize(1000000/pow); return f; } } }