[]3d下阴影渲染问题求解

如果开启阴影下, 先创建person 再创建box群组, 那么必定不会在box上产生person的投影,
另外如果先创建了box群组, 再创建person, 如果后续中出现removeChild把box群组中去掉几个, 也会影响其他box接收person的功能

LayaAir3D.prototype = {

        creatBox:function(parent,poolBox,boxSize){

            // var i = Math.random()*10;

            // var j = Math.random()*10;

            for (var i = 0; i < 10; i++) {

                for (var j = 0; j < 10; j++) {

                    // var box = parent.addChild(new Laya.MeshSprite3D(new Laya.PlaneMesh(boxSize,boxSize,2,2)));

                    var box = parent.addChild(new Laya.MeshSprite3D(new Laya.BoxMesh(boxSize, boxSize, .5)));

                    // var boxSys = new Zszen.BoxPlus(boxSize,boxSize,boxSize,"res/simbol/box2.png");

                    // var box = boxSys.object3d;

                    parent.addChild(box);

                    box.transform.rotate(new Laya.Vector3(0, 45, 0), false, false);

                    box.transform.localPosition = new Laya.Vector3((i-5)*boxSize*1.1,0,j*boxSize*1.1-1);

                    var material = new Laya.StandardMaterial();

                    material.diffuseTexture = Laya.Texture2D.load("res/layabox.png");

                    material.albedo = new Laya.Vector4(1,0,1,1);

                    box.meshRender.material = material;

                    box.meshRender.receiveShadow = true;

                    box.meshRender.castShadow = true;

                    poolBox.push(box);

                }

            }

        },

        creatPerson:function(parent){

            this.ball = parent.addChild(new Laya.MeshSprite3D(new Laya.BoxMesh(.2,.2,.1)));

            var material = new Laya.StandardMaterial();

            material.albedo = new Laya.Vector4(1,1,1,1);

            this.ball.meshRender.material = material;

            this.ball.meshRender.receiveShadow = true;

            this.ball.meshRender.castShadow = true;

            this.ball.transform.localPosition = new Laya.Vector3(0,.8,0);

        }

    };

    return LayaAir3D;