/* drawTrianglesの勉強中。 ぐにょぐにょ動かしてみましたー！ ちなみに画像はうちのにゃんこです。 */ package { import __AS3__.vec.Vector; import net.wonderfl.utils.SequentialLoader; import flash.display.BitmapData; import flash.display.Loader; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="40")] public class main extends Sprite { private const URL:String="http://assets.wonderfl.net/images/related_images/3/34/34d8/34d838651bde542d82b3a4f1b8675e57cd468bf9"; private var bmpd:BitmapData; private var imgs:Array=[]; private const NUM_X:int=20; private const NUM_Y:int=20; private var vertices:Vector.<Number>; private var indices:Vector.<int>; private var uvtData:Vector.<Number>; private var firstPointX:Vector.<Number>; private var firstPointY:Vector.<Number>; private var W:Number; private var H:Number; private var shape:Shape; public function main() { // 画像のロード SequentialLoader.loadImages([URL], imgs, onLoaded); } private function onLoaded():void { // 画像の読み込み var ldr:Loader=imgs.pop(); bmpd=new BitmapData(ldr.width, ldr.height); bmpd.draw(ldr); W=bmpd.width; H=bmpd.height; shape=addChild(new Shape()) as Shape; shape.x=(465 - bmpd.width) / 2; shape.y=(465 - bmpd.height) / 2; uvtData=new Vector.<Number>(); vertices=new Vector.<Number>(); indices=new Vector.<int>(); firstPointX=new Vector.<Number>(); firstPointY=new Vector.<Number>(); // 初期の座標を計算 for (var i:int=0; i < NUM_X; i++) { for (var j:int=0; j < NUM_X; j++) { uvtData.push(j / (NUM_X - 1), i / (NUM_Y - 1)); vertices.push(W * j / (NUM_X - 1), H * i / (NUM_Y - 1)); firstPointX.push(W * j / (NUM_X - 1)); firstPointY.push(H * i / (NUM_Y - 1)); if (i != (NUM_Y - 1) && j != (NUM_X - 1)) { indices.push(NUM_X * i + j, NUM_X * i + j + 1, NUM_X * (i + 1) + j); indices.push(NUM_X * i + j + 1, NUM_X * (i + 1) + j, NUM_X * (i + 1) + j + 1); } } } addEventListener(Event.ENTER_FRAME, onFrame); } private function onFrame(e:Event):void { // 座標の計算 for (var i:int=0; i < NUM_X * NUM_Y; i++) { var theta:Number=Math.atan2(vertices[i * 2 + 1] - shape.mouseY, vertices[i * 2] - shape.mouseX); var d:Number=300 / Math.sqrt(Math.pow(shape.mouseX - vertices[i * 2], 2) + Math.pow(shape.mouseY - vertices[i * 2 + 1], 2)); vertices[i * 2]+=d * Math.cos(theta) + (firstPointX[i] - vertices[i * 2]) * 0.1; vertices[i * 2 + 1]+=d * Math.sin(theta) + (firstPointY[i] - vertices[i * 2 + 1]) * 0.1; } // draw！ shape.graphics.clear(); shape.graphics.beginBitmapFill(bmpd); shape.graphics.drawTriangles(vertices, indices, uvtData); shape.graphics.endFill(); } } }