unity3d：模型跟随鼠标运动，旋转

逃离我推掉我的手 2022-05-25 03:12 299阅读 0赞

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class ModelMouseCtrl : MonoBehaviour {
        public Transform m_curShowObj;
        private Transform m_hitTrans;
        bool m_isLeftPress = false;
        bool m_isRightPress = false;
        public float m_xAngles = 0.0f;
        public float m_yAngles = 0.0f;
    
        private float m_xSpeed = 10.0f;
        private float m_ySpeed = 10.0f;
    	
    	// Update is called once per frame
    	void Update () {
            if (Input.GetMouseButtonDown(0))
            {
                m_isLeftPress = true;
                Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
                RaycastHit hit = new RaycastHit();//存储碰撞信息
                if (Physics.Raycast(ray,out hit))
                {
                    m_hitTrans = hit.transform;
                }
    
            }
    
            if (Input.GetMouseButtonUp(0))
            {
                m_isLeftPress = false;
                m_hitTrans = null;
            }
    
    
    
            if (Input.GetMouseButton(1))
            {
                m_isRightPress = true;
                m_xAngles -= Input.GetAxis("Mouse X") * m_xSpeed ;
                m_yAngles += Input.GetAxis("Mouse Y") * m_ySpeed ;
            }
    
            if (Input.GetMouseButtonUp(1))
            {
                m_isRightPress = false;
            }
        }
    
        private void LateUpdate()
        {
            if (m_isLeftPress == true && m_hitTrans != null)
            {
                Vector3 screenPos = Camera.main.WorldToScreenPoint(m_hitTrans.position); 
                Vector3 mousePos = Input.mousePosition;
                mousePos.z = screenPos.z; 
                Vector3 worldPos = Camera.main.ScreenToWorldPoint(mousePos);
                m_hitTrans.position = worldPos;
            }
    
            if (m_isRightPress == true)
            {
                m_curShowObj.transform.localRotation = Quaternion.Euler(m_yAngles, 0, 0);
                m_curShowObj.transform.GetChild(0).localRotation = Quaternion.Euler(0, m_xAngles, 0) ;
            }
        }
    }

模型跟随鼠标左键运动，右键旋转，模型旋转