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🥙问题描述

使用：Camera.main.ScreenPointToRay 将鼠标坐标转换成射线，然后通过：Physics.Raycast 获取到射线碰撞到的坐标，使用发现偏差比较大

🥪解决方案

测试发现提高nearClip值可以解决该问题，大概是近裁面太小导致的精度问题~

🍿验证代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;public class MousePosShow : MonoBehaviour
{public GameObject go;public GameObject lastHitGo;public Vector2 mousePos;public Vector2 goScreenPos;private void LateUpdate(){
#if ENABLE_INPUT_SYSTEMthis.mousePos = Mouse.current.position.ReadValue();
#elsevar mousePos = Input.mousePosition;
#endifvar ray= Camera.main.ScreenPointToRay(mousePos);if (Physics.Raycast(ray, hitInfo: out RaycastHit hitInfo,maxDistance:5000)){go.transform.position = hitInfo.point;var hitGo = hitInfo.transform.gameObject;if (lastHitGo != hitGo){Debug.Log($"鼠标位置物体：{hitGo.name}", hitGo);lastHitGo = hitGo;}}}// Update is called once per framevoid Update(){goScreenPos = Camera.main.WorldToScreenPoint(go.transform.position);}}