[]Cannot read property 'toDefault' of undefined报错是什么原因

Laya.class(MousePickingScene, "MousePickingScene", Laya.Scene);

function MousePickingScene() {

	MousePickingScene.super(this);

	this.camera = new Laya.Camera(0,0.1,100);

	this.addChild(this.camera);

	this.camera.clearFlag = Laya.BaseCamera.CLEARFLAG_SKY;

	this.skyBox = new Laya.SkyBox();

	this.camera.sky = this.skyBox;

	this.skyBox.textureCube = Laya.TextureCube.load("skyBox/skyCube.ltc");

	this.camera.addComponent(VRCameraMoveScript);

	this.ray = new Laya.Ray(new Laya.Vector3(0, 0, 0), new Laya.Vector3(0, 0, 0));

	this.point = new Laya.Vector2();

	this._outHitInfo = new Laya.RaycastHit();

	// this.phasorSpriter3D = new Laya.PhasorSpriter3D();

}



MousePickingScene.prototype.lateRender = function (state) {

	MousePickingScene.__super.prototype.lateRender.call(state);

	//从屏幕空间生成射线

	this.point.elements[0] = Laya.stage.mouseX;

	this.point.elements[1] = Laya.stage.mouseY;

	this.camera.viewportPointToRay(this.point, this.ray);

	//11111111111111就是下面这句报错

	Laya.Physics.rayCast(this.ray, this._outHitInfo, Number.MAX_VALUE, 10);

	if (this._outHitInfo.sprite3D.name === "tlj"){

		isRotate = !isRotate;

	}

	// this.phasorSpriter3D.begin(Laya.WebGLContext.LINES, state);

	// //绘出射线

	// this.phasorSpriter3D.line(this.ray.origin.x, this.ray.origin.y, this.ray.origin.z, 1.0, 0.0, 0.0, 1.0, 0, -1, 0, 1.0, 0.0, 0.0, 1.0);

	// this.phasorSpriter3D.end();

}





var Stage       = Laya.Stage;

var Text        = Laya.Text;

var Geolocation = Laya.Geolocation;

var Position    = Laya.Position;

var Browser     = Laya.Browser;

var Handler     = Laya.Handler;





// 百度地图

var map;

var marker;

var BMap = Browser.window.BMap;

var convertor = new BMap.Convertor();



// Div用来显示地图

var mapDiv;



var infoText;



var scene;

var mySwitch;

var target;

var isRotate = true;

(function()

{



	Laya3D.init(0, 0,true);

	Laya.stage.scaleMode = Laya.Stage.SCALE_FULL;

	Laya.stage.screenMode = Laya.Stage.SCREEN_NONE;



	scene = Laya.stage.addChild(new Laya.Scene());

	scene.shadingMode = Laya.BaseScene.VERTEX_SHADING;

	Laya.stage.addChild(new MousePickingScene());



	// Laya.init(Browser.width, Browser.height);

	// Laya.stage.scaleMode = Stage.SCALE_NOSCALE;

	infoText = "距离：null";

	mySwitch = true;

	target = new BMap.Point(113.392307, 23.062487); 



	createDom();

	initMap();

	createButton();

	

	var successHandler = new Handler(this, updatePosition);

	var errorHandler = new Handler(this, onError);

	

	// 使用高精度位置

	Geolocation.enableHighAccuracy = true;

	Geolocation.watchPosition(successHandler, errorHandler);

	

	// 绑定作用域

	convertToBaiduCoord = convertToBaiduCoord.bind(this);



	

})();