Unity 射线移动物体Ray

效果

1.

补充一下 精准点击物体拖拽的效果 点击选中需要移动的物体,拖动物体,

物体是3D物体,摄像机是正交摄像机,

移动物体代码如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraRayObj : MonoBehaviour
{
    public Vector3 offects;
    private Transform cube;
 
    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;

            //给拖拽的物体一个tag值 JQR 方便区分
            //鼠标按下 记录鼠标点击物体的点到物体坐标位置的插值 
            if (Physics.Raycast(ray, out hit) && hit.collider.tag == "JQR")
            {
                cube = hit.collider.transform;
                offects = hit.collider.transform.position - hit.point;
            }

        }

        if (Input.GetMouseButton(0))
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            //射线打到后面板子,相当于物体的位置, 板子设置一个层级  
            if (Physics.Raycast(ray, out hit, 1000, 1 << 8) && cube != null)
            {
                //第一种方式
                //cube.position = v3-Vector3.forward*v3.z + hit.point-Vector3.forward*hit.point.z;
                //第二种方式
                cube.position = new Vector3(hit.point.x + offects.x, hit.point.y + offects.y, cube.transform.position.z);
            }
        }

        if (Input.GetMouseButtonUp (0))
        {
            cube = null;
        }
    }
}

 

 

旋转物体的代码如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RotatingObject : MonoBehaviour
{
    //旋转最大角度
    public int yMinLimit = -20;
    public int yMaxLimit = 80;
    //旋转速度
    public float xSpeed = 250.0f;
    public float ySpeed = 120.0f;
    //旋转角度
    private float x = 0.0f;
    private float y = 0.0f;

    private void Update()
    {
        if (Input.GetMouseButton (1))
        {
            x -= Input.GetAxis("Mouse X") * xSpeed * 0.02f;
            y += Input.GetAxis("Mouse Y") * xSpeed * 0.02f;
            y = ClampAngle(y, yMinLimit, yMaxLimit);
            Quaternion rotation = Quaternion.Euler(y, x, 0);
            transform.rotation = rotation;
        }
    }
    //限制旋转角度
    static float ClampAngle(float angle, float min, float max)
    {
        if (angle < -360)
            angle += 360;
        if (angle > 360)
            angle -= 360;
        return Mathf.Clamp(angle, min, max);
    }
}

 

 

 

 

2.

实现射线拖动物体的功能,能上下左右的拖动,需要下载的小伙伴可以下载看看,

等下会把demo链接发上来,先把代码贴一下

写了俩个脚本一个是前后左右拖动,一个是上下拖动的,都是挂在同一个对象上,写的简单,不喜勿扰。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShuiYiTuoDong : MonoBehaviour {
    Ray ray2;
    RaycastHit hit2;
    public Camera cameraa;
    // Use this for initialization
    void Start () {
        
    }
    
    // Update is called once per frame
    void Update () {
        if (Input.GetMouseButton(0))
        {
            this.GetComponent<ShengGaoCube>().enabled = false;
            
            ray2 = cameraa.ScreenPointToRay(Input.mousePosition);
            Debug.DrawLine(ray2.origin,hit2.point );
            LayerMask lm = 1 << 9;
            if (Physics.Raycast(ray2, out hit2,lm))
            {
                this.transform.position = new Vector3(hit2.point.x, transform.position.y, hit2.point.z);
            }
        }
        else
        {
            this.GetComponent<ShengGaoCube>().enabled = true;
        }
    }
}

这是第二个

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShengGaoCube : MonoBehaviour {
    Ray ray,ray1,ray2;
    RaycastHit hit,hit1,hit2;
    public Camera  cameraa;
   
  
    // Use this for initialization
    void Start () {
      
    }
    
    // Update is called once per frame
    void Update () {
        if (Input.GetKey (KeyCode .V))
        {
            this.GetComponent<ShuiYiTuoDong>().enabled = false;
            if (Input.GetMouseButton(0))
            {
                Debug.DrawLine(transform.position, hit.point);
                ray = cameraa.ScreenPointToRay(this.transform.position);
                LayerMask lm = 1 << 9;
                if (Physics.Raycast(ray, out hit, lm))
                {

                }
                ray1 = cameraa.ScreenPointToRay(Input.mousePosition);
                if (Physics.Raycast(ray1, out hit1))
                {
                    if (hit1.transform.name == "Cube")
                    {
                        this.transform.position = new Vector3(this.transform.position.x, hit1.point.y, this.transform.position.z);
                    }
                }
            }
        }
        else
        {
            this.GetComponent<ShuiYiTuoDong>().enabled = true;
        }
       
       
    }
}

 

最后附上demo链接：

链接：https://pan.baidu.com/s/1DrGHn_j43rcb4hlj4OXnSw
提取码：mx1c