[]父物体旋转会导致子物体的世界坐标系不正确？（附demo）

一个简单的场景

如果我旋转图中

方框指示的sprite3d的rotation，会导致子物体TargetGuard的transform.position不正确，好像子节点属于的坐标系变动了？

比如说，绳子不旋转的时候，我在代码中动下面圆盘的transform.position

this.block = s.getChildByName("target_root").getChildByName("PendulumCircleTarget").getChildByName("MoveBlockPivot").getChildByName("TargetGuard") as Laya.Sprite3D;



Laya.stage.on(Laya.Event.KEY_PRESS, this, this.KeyPress);

this.pivot = s.getChildByName("target_root").getChildByName("PendulumCircleTarget").getChildByName("MoveBlockPivot") as Laya.Sprite3D;

let newRot = new Laya.Quaternion(0, 0, 0, 0);

Laya.Quaternion.createFromYawPitchRoll(0, 0* (Math.PI / 180), 0, newRot);

this.pivot.transform.rotation = newRot;



        ..............................................

                if (e.keyCode == 97) {

            // console.log("a");

            let newPos = new Laya.Vector3(this.block.transform.position.x + 0.1, this.block.transform.position.y, this.block.transform.position.z);

            console.log(newPos.x);

            this.block.transform.position = newPos;

        }

        else if (e.keyCode == 100) {

            // console.log('d');

            let newPos = new Laya.Vector3(this.block.transform.position.x - 0.1, this.block.transform.position.y, this.block.transform.position.z);

            console.log(newPos.x);

            this.block.transform.position = newPos;

        }

能够正确的左右移动

如果我让绳子旋转一点

        this.pivot = s.getChildByName("target_root").getChildByName("PendulumCircleTarget").getChildByName("MoveBlockPivot") as Laya.Sprite3D;

        let newRot = new Laya.Quaternion(0, 0, 0, 0);

        Laya.Quaternion.createFromYawPitchRoll(0, 20 * (Math.PI / 180), 0, newRot);

        this.pivot.transform.rotation = newRot;

这个时候直接操作transform.position的xyz，都是不按照世界坐标系的上下左右来移动，而是一个很奇怪的坐标系：

unity场景和laya工程都在附件中，麻烦帮忙看一下

父节点旋转子节点世界坐标系问题.zip

已邀请:

7 个回复

Aar0n

赞同来自:

我给您看一下，稍后回复

LagField

赞同来自:

专门在unity做了同样的事情，能够正确改变世界位置。

using System.Collections;

using System.Collections.Generic;

using UnityEngine;



public class TestMove : MonoBehaviour

{



    [SerializeField] private Transform pivot;



    [SerializeField] private Transform guard;





	// Use this for initialization

	void Start ()

	{

	    pivot.transform.rotation = Quaternion.Euler(0, 0, -20);



	}

	

	// Update is called once per frame

	void Update () {

	    if (Input.GetKey(KeyCode.A))

	    {

	        guard.transform.position = new Vector3(guard.transform.position.x + 0.1f, guard.transform.position.y, guard.transform.position.z);

	    }

        else if (Input.GetKey(KeyCode.D))

	    {

	        guard.transform.position = new Vector3(guard.transform.position.x - 0.1f, guard.transform.position.y, guard.transform.position.z);

        }

	}

}

Laya里面的transform.position是怎么计算来的，如果要看源码能大概说一下在哪个文件里吗