[]正交相机要怎么控制啊，坐标什么的全部懵！看了这个官方示例表示不懂，为什么还要转化为2D坐标？

Laya3D.init(0, 0, true);

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

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



var dialog = Laya.stage.addChild(new Laya.Image("../../res/threeDimen/texture/earth.png"));



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



var camera = scene.addChild(new Laya.Camera(0, 0.1, 1000));

camera.transform.rotate(new Laya.Vector3(-90, 0, 0), false, false);     //-30改为-90

camera.transform.translate(new Laya.Vector3(0, 0.5, 0));       //（0,0.5,500）改为(0, 0.5, 0)

camera.orthographicProjection = true;



var directionLight = scene.addChild(new Laya.DirectionLight());



var layaMonkey = scene.addChild(Laya.Sprite3D.load("../../res/threeDimen/skinModel/LayaMonkey/LayaMonkey.lh"));

var translate = new Laya.Vector3(0, 0, 0);    //(500, 500, 0)改为（0,0,0）

var rotation = new Laya.Vector3(0, 0.01, 0);

layaMonkey.once(Laya.Event.HIERARCHY_LOADED, this, function () {

    layaMonkey.transform.localScale = new Laya.Vector3(300, 300, 300);

    Laya.Utils3D.convert3DCoordTo2DScreenCoord(translate, translate);

    layaMonkey.transform.position = translate;

    Laya.timer.frameLoop(1, this, function () {

        layaMonkey.transform.rotate(rotation);

    });

});



Laya.stage.on(Laya.Event.RESIZE, null, function () {

    camera.orthographicVerticalSize = Laya.RenderState.clientHeight;

});