Unity3D测量距离实现方法（一）

系列文章目录

unity工具

文章目录

系列文章目录
👉前言
👉一、Unity距离测量
- 1-1 制作预制体
- 1-2 编写测量的脚本
👉二、鼠标点击模型进行测量
👉二、字体面向摄像机的方法
👉二、最短距离测量方法
👉三、壁纸分享
👉总结

👉前言

有时候会用到测量距离的问题,所以写了一个测量的小工具,方便使用,简单记录一下
大家好，我是心疼你的一切，不定时更新Unity开发技巧，觉得有用记得一键三连哦。
欢迎点赞评论哦.
下面就让我们进入正文吧 !

提示：以下是本篇文章正文内容，下面案例可供参考
效果展示

测量距离

👉一、Unity距离测量

1-1 制作预制体

创建一个空物体,空物体下面创建两个小球并设置一下大小,接着创建一个3D字体在空物体下面,最后在空物体上面添加LineRenderer组件
创建好的结构如下
在这里插入图片描述
st和ed是小球，这里切记小球不能带碰撞盒，带碰撞盒就会出现意外的情况 tm是3d字体
linerenderer组件设置一下Positions的数量为2，要么就在代码里面设置为2
具体怎么设置就看你心情喽

1-2 编写测量的脚本

脚步挂载到刚刚创建的空物体上面即可

using UnityEngine;
using TMPro;//距离单位
public enum UnitType
{ mm = 1000,  //毫米cm = 100,   //厘米dm = 10,    //分米m  = 1,     //米
}//[ExecuteInEditMode]
public class Line : MonoBehaviour
{public GameObject StObj, EdObj;TextMesh tm;LineRenderer line;[Header("实时绘制(较多会卡顿)")]public bool IsRt = false;[Header("线的粗细")]public float LineWidth = 0.05f;Material LineMat;[Header("线的颜色")]public Color LineColor;[Header("长度单位")]public UnitType unittype;Transform tram;private void Start(){LineMat = new Material(Shader.Find("Standard"));CreateTm();CreateLine();}void CreateTm(){tram = transform.Find("tm");if (tram != null)tm = tram.GetComponent<TextMesh>();if (tm == null){tm = new GameObject("tm").AddComponent<TextMesh>();tm.color = Color.white;tm.fontSize = 4;tm.transform.SetParent(this.transform);//tm.GetComponent<RectTransform>().sizeDelta = new Vector2(2, 1);//tm.alignment = TextAlignmentOptions.Center;}}void CreateLine(){line = gameObject.GetComponent<LineRenderer>();if (line == null)line = gameObject.AddComponent<LineRenderer>();line.material = LineMat;}public void DrawLineInfo(){tm.text = (Vector3.Distance(StObj.transform.position, EdObj.transform.position) * (int)unittype).ToString("F1") + unittype;tm.transform.position = (StObj.transform.position + EdObj.transform.position) / 2+new Vector3(0,0.1f,0);line.SetPositions(new Vector3[] { StObj.transform.position, EdObj.transform.position });line.startWidth = LineWidth;line.endWidth = LineWidth;LineMat.color = LineColor;}void Update(){if (IsRt)DrawLineInfo();}
}

👉二、鼠标点击模型进行测量

新建一个脚本进行编写
代码如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;//测量距离
public class RangeFinding : MonoBehaviour
{//总控制public bool isClbool;private Vector3 posOne, posTwo;//测量控制public bool isOpenDistance;private int distanceInt;   //计数控制public Transform prefabTransform;  //测量的预制体private Transform myDistanceObj;public Transform allCLParentTransform;  //所有预制体生成的父节点// Start is called before the first frame updatevoid Start(){}// Update is called once per framevoid Update(){if (isClbool){if (Input.GetMouseButtonDown(0)){posOne = Input.mousePosition;}Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);RaycastHit hit;//距离if (isOpenDistance){if (Input.GetMouseButtonUp(0)){posTwo = Input.mousePosition;if (Physics.Raycast(ray, out hit, 1000) && posOne == posTwo){if (distanceInt == 0){distanceInt++;//鼠标点击克隆物体myDistanceObj = Instantiate(prefabTransform, allCLParentTransform);// transform.TransformPoint(Prefab,hit.poit, Quaternion.identity);myDistanceObj.transform.GetChild(0).position = hit.point;}else{myDistanceObj.transform.GetChild(1).position = hit.point;//isOpenJL = false;distanceInt = 0;}}}if (distanceInt > 0){if (Physics.Raycast(ray, out hit, 1000)){myDistanceObj.transform.GetChild(1).position = hit.point;}}}}}
}

脚本随便挂载,你开心就好
在这里插入图片描述
挂载完毕运行测试即可,把两个bool值勾选上就可以进行测量了
运行结果,上面我已经放过了,就在放一下吧

测量距离

👉二、字体面向摄像机的方法

如果生成的距离字体不面向摄像机的话,需要加一下面向摄像机的方法,要不然没有感觉
代码如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class LookAtCamera : MonoBehaviour
{// Start is called before the first frame updatevoid Start(){}// Update is called once per framevoid Update(){transform.LookAt(Camera.main.transform);}
}

此代码挂载到我们一开始创建的tm上面
在这里插入图片描述

👉二、最短距离测量方法

还是用到上面的预制体，其他不用改
废话不多说了直接上代码代码如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 最短距离  垂直距离
/// </summary>
public class MakeBeelineController : MonoBehaviour
{public bool isClbool;public bool isOpenMDistance;private Vector3 posOne, posTwo;private int distanceInt;   //记录次数public Transform prefabTransform;  //测量的预制体private Transform myDistanceObj;public Transform allCLParentTransform;  //所有预制体生成的父节点// Start is called before the first frame updatevoid Start(){}public void OpenCLLLLLL(){isClbool = true;isOpenMDistance = true;}public void CloseCLLLLLL(){isClbool = false;isOpenMDistance = false;if (allCLParentTransform.childCount == 0) return;if (allCLParentTransform.childCount > 0){for (int i = 0; i < allCLParentTransform.childCount; i++){Destroy(allCLParentTransform.GetChild(i).gameObject);}}}// Update is called once per framevoid Update(){if (isClbool){if (Input.GetMouseButtonDown(0)){posOne = Input.mousePosition;}Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);RaycastHit hit,hit1;//最短距离if (isOpenMDistance){if (Input.GetMouseButtonUp(0)){posTwo = Input.mousePosition;if (Physics.Raycast(ray, out hit) && posOne == posTwo){myDistanceObj = Instantiate(prefabTransform, allCLParentTransform);myDistanceObj.transform.GetChild(0).position = hit.point;Vector3 fwd = Vector3.down; // myDistanceObj.transform.GetChild(0).TransformDirection(Vector3.down);if (Physics.Raycast(myDistanceObj.transform.GetChild(0).position, fwd, out hit1, 1000)){myDistanceObj.transform.GetChild(1).position = hit1.point;}else{Destroy(myDistanceObj.gameObject);}}}}}}
}