egret_场景跳转特效

public static MovieStart(_txnums) {
//创建一个截图Bitmap
var taget: egret.Stage = Main.tage;
var w = taget.stageWidth;
var h = taget.stageHeight;
//新建一个group
var loadTxGrp = new eui.Group();
loadTxGrp.width = w;
loadTxGrp.height = h;
taget.addChild(loadTxGrp)
//循环创建多个截图bitmap 这里num自由设置
var tx1Number = 40;
//每个横着的数量
var Xnumber = 5;
//高数量自动计算
var Ynumber = tx1Number / Xnumber;
for (var i = 0; i < tx1Number; i++) {
//计算每个的XY及宽高
var _mcW = w / Xnumber;
var _mcH = h / Ynumber;
var _mcX = i % Xnumber * _mcW;
var _mcY = Math.floor(i / Xnumber) * _mcH;


var renderTexture: egret.RenderTexture = new egret.RenderTexture();
var mypic = renderTexture.drawToTexture(taget, new egret.Rectangle(_mcX, _mcY, _mcW, _mcH));
var bmp = new egret.Bitmap;
bmp.texture = renderTexture;
bmp.anchorOffsetX = _mcW / 2
bmp.anchorOffsetY = _mcH / 2
bmp.x = _mcX + _mcW / 2;
bmp.y = _mcY + _mcH / 2;
loadTxGrp.addChild(bmp);
if (_txnums == 5) {
_txnums = Math.ceil(Math.random() * 4)
}
//开始特效
switch (_txnums) {
case 1:
var tw = egret.Tween.get(bmp);
tw.to({ scaleX: 0, scaleY: 0, alpha: 0, rotation: 359 }, 800, egret.Ease.circIn).call(onComplete, this);
break;
case 2:
var my_x = -w
if (!(i % 2)) {
my_x = w * 2
}
var tw = egret.Tween.get(bmp);
tw.to({ x: my_x, alpha: 0 }, 800, egret.Ease.circIn).call(onComplete, this);
break;
case 3:
var tw = egret.Tween.get(bmp);
tw.to({ scaleX: 0.2, scaleY: 1, alpha: 0, blurFliter: 0 }, 800, egret.Ease.backInOut).call(onComplete, this);
break;
case 4:
var tw = egret.Tween.get(bmp);
tw.to({ alpha: 0 }, 900, egret.Ease.circIn).call(onComplete, this)
break;
default:
var tw = egret.Tween.get(bmp);
tw.to({ scaleX: 1, scaleY: 0, alpha: 0 }, 800, egret.Ease.circIn).call(onComplete, this);
}
}
var upNumber = 0;
function onComplete(evt: Comment) {
upNumber++
if (upNumber == tx1Number) {
taget.removeChild(loadTxGrp)
}
}
}