[AS3] 目標實體(點陣圖設為內嵌資源類別)的rotationX、rotationY值隨 mouseX、mouseY 與stage寬高中線的正負距離而漸變轉動

※將選用的點陣圖匯入元件庫，設定為內嵌資源類別，類別命名為MyPhoto

1000117_DisplayObject__mouseX_rotationY_3.swf

import flash.ui.Mouse;
import flash.events.MouseEvent;
import caurina.transitions.Tweener;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.Bitmap;
//
var disX:int;
var disY:int;
//
var plane:MovieClip = new MovieClip();
addChild(plane);
var bmd:BitmapData = new MyPhoto();
var bm:Bitmap = new Bitmap(bmd);
plane.addChild(bm);
bm.scaleX = 0.9;
bm.scaleY = 0.9;

//bm左上角原對齊在plane的註冊點(0,0)，調整bm中心點位置使對齊plane的註冊點(0,0)
bm.x = - bm.width/2;
bm.y = - bm.height/2;

//由於bm中心點位置經上述調整，正對齊plane的註冊點(0,0)，也對齊stage的(0,0)
//想把plane從stage的(0,0)移動stage的中央，必須將stage的寬與高各除以2，指定給plane.x和plane.y
plane.x = stage.stageWidth/2;
plane.y = stage.stageHeight/2;

//
stage.addEventListener(MouseEvent.MOUSE_MOVE, rotateXY);
//
function rotateXY(e:MouseEvent):void{
 disX = mouseX - Math.ceil(stage.stageWidth/2);
 disY = mouseY - Math.ceil(stage.stageHeight/2);
 plane.rotationY = disX/16;
 plane.rotationX = -disY/16;
}