Unity 3D模型展示之生成标注

1.效果图

2.生成标注

标注生成要求：
1.指定元件生成标注。
2.生成标注出现位置可以设置。

根据标注生成的要求，可以在元件添加脚本时将这些信息读取并进行实现。控制标注生成在元件的位置，生成标注的距离。

创建标注预制体，分别在标注预制体中设置8个连接点
在MSwitchParts增加属性来保存标注出现位置信息，并提供方法进行信息的设置。

MSwitchParts中的代码片段

    public MSwitchParts(int id, string partName, string objName, string details, string inFopostion = "Bottom0", float infoDis = 1, float infoAngle = 45, int pId = 0, List<int> pIds = null){this.Id = id;this.PartName = partName;this.ObjName = objName;this.Details = details;this.PId = pId;this.InFopostion = inFopostion;this.InfoDis = infoDis;this.InfoAngle = infoAngle;this.pIds = pIds;}

在SwitchOperation初始化数据，参数为连接点、距离、角度。

这里根据设置距离、角度，需要进行生成点位置的计算

    public Vector3 GetEndPointByTrigonometric(float angle, Vector3 StartPoint, float distance){Vector3 EndPoint = Vector3.zero;//角度转弧度var radian = (angle * Math.PI) / 180;Debug.Log(Math.Cos(radian));//计算新坐标 r 就是两者的距离EndPoint.x = StartPoint.x + float.Parse((distance * Math.Cos(radian)).ToString());EndPoint.y = StartPoint.y + float.Parse((distance * Math.Sin(radian)).ToString());EndPoint.z = StartPoint.z;return EndPoint;}

已知起始坐标(元件的坐标)与计算出的终点坐标，需要画上一根线连接起来。新建MyLine脚本。

using UnityEngine;[RequireComponent(typeof(LineRenderer))]
public class MyLine : MonoBehaviour
{[SerializeField]private Transform TransformA;[SerializeField]public Transform TransformB;public LineRenderer LineRender;[System.Obsolete]void Start(){TransformA = this.transform;LineRender = this.GetComponent<LineRenderer>();if (LineRender != null){LineRender.sharedMaterial = SwitchOperation.Instance.lineColormaterial;LineRender.generateLightingData = true;LineRender.SetWidth(0.008f, 0.008f);//LineRender.enabled = false;}}void Update(){if (LineRender && TransformB){LineRender.SetPosition(0, TransformA.position);LineRender.SetPosition(1, TransformB.position);}}
}

修改SwitchOperation脚本实现功能。主要代码。

 //获取终点坐标var objPointPostion = GetEndPointByTrigonometric(tempModel.InfoAngle, t.position, tempModel.InfoDis);var infoRotation = t.rotation;//生成标注GameObject infoTemp = Instantiate(infoPrefabs, objPointPostion, infoRotation);//生成标注 命名infoTemp.name = "info" + t.name;//infoTemp.tag = "Info";var tempText = infoTemp.transform.Find("info").transform.Find("btnInfo").transform.Find("Text").GetComponent<Text>();tempText.text = tempModel.PartName;MyLine line = t.gameObject.AddComponent<MyLine>();if (tempModel.InFopostion != ""){line.TransformB = infoTemp.transform.Find(tempModel.InFopostion).transform;}else{line.TransformB = infoTemp.transform;}

SwitchOperation完整代码


using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Serialization;
using UnityEngine.UI;public class SwitchOperation : MonoBehaviour
{public static SwitchOperation Instance;private List<MSwitchParts> list = new List<MSwitchParts>();[FormerlySerializedAs("infoPrefabs")][Tooltip("Prefab of the  object. Prefab must have a infoPrefabs component. May be an empty game object or a full avatar.")]public GameObject infoPrefabs;public int currentIndex = 0;public Material lineColormaterial;private void Awake(){Instance = this;}// Start is called before the first frame updatevoid Start(){InitData();}public List<MSwitchParts> GetSwitchParts(){return list;}/// <summary>/// 初始化数据/// </summary>private void InitData(){var dd = new MSwitchParts(1, "真空交流接触器", "zuoduanzhenkongjiaoliuqi2_N", "详细信息比萨饼爸爸", "Bottom1", 1.414f, 90);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(2, "电流互感器", "zuoduandianliuhuganqi1_N", "详细信息222323232", "Right", 0.8f, 180);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(3, "变压器TC", "zuoduanjiaoliuqi1_N", "详细信息222323232", "Top1", 1f, 235);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(4, "千伏级熔断器FU1", "qianfurongduanqi_N", "详细信息222323232", "Top1", 1f, -50);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(5, "中间继电器", "jidianqi2_N", "详细信息222323232", "Left", 1f, 0);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(6, "保护器", "baohuqi1_N", "详细信息222323232", "Right", 1.5f, 180);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(7, "隔离开关QS", "gelizhuanxiangkaiguan003_N", "详细信息222323232", "Bottom1", 1f, 90);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(8, "急停按钮", "jitinganniudizuo2_N", "详细信息222323232", "Right", 1.5f, 135);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);dd = new MSwitchParts(9, "阻容吸收装置", "zhurongxishouqi3_N", "详细信息222323232", "Left", 1f, 35);dd.setTask(1, "选择卸载" + dd.PartName, 7, "1");dd.setTask(2, "卸载" + dd.PartName + "的接线柱", 7, "2");dd.setTask(3, "卸载" + dd.PartName + "的固定螺丝", 7, "3");dd.setTask(4, "取出" + dd.PartName, 7, "4");list.Add(dd);Transform[] allTr = transform.GetComponentsInChildren<Transform>();int m = 0;foreach (Transform t in allTr){var tempModel = list.Find(p => p.ObjName == t.name);if (tempModel != null){Debug.Log(t.name);SwitchPart part = t.gameObject.AddComponent<SwitchPart>();part.ownerIndex = m;m++;part.mSwitchParts = tempModel;//获取终点坐标var objPointPostion = GetEndPointByTrigonometric(tempModel.InfoAngle, t.position, tempModel.InfoDis);var infoRotation = t.rotation;//生成标注GameObject infoTemp = Instantiate(infoPrefabs, objPointPostion, infoRotation);//生成标注 命名infoTemp.name = "info" + t.name;var tempText = infoTemp.transform.Find("info").transform.Find("btnInfo").transform.Find("Text").GetComponent<Text>();tempText.text = tempModel.PartName;MyLine line = t.gameObject.AddComponent<MyLine>();if (tempModel.InFopostion != ""){line.TransformB = infoTemp.transform.Find(tempModel.InFopostion).transform;}else{line.TransformB = infoTemp.transform;}}}}public Vector3 GetEndPointByTrigonometric(float angle, Vector3 StartPoint, float distance){Vector3 EndPoint = Vector3.zero;//角度转弧度var radian = (angle * Math.PI) / 180;Debug.Log(Math.Cos(radian));//计算新坐标 r 就是两者的距离EndPoint.x = StartPoint.x + float.Parse((distance * Math.Cos(radian)).ToString());EndPoint.y = StartPoint.y + float.Parse((distance * Math.Sin(radian)).ToString());EndPoint.z = StartPoint.z;return EndPoint;}public void SetCurrentIndex(int opeIndex){if (opeIndex > list.Count){currentIndex = list.Count;}else{currentIndex = opeIndex;}}public void SetCurrentInfo(){list[currentIndex].OperaStatus = "N";}public void SetCurrentFinishInfo(){list[currentIndex].OperaStatus = "T";}public GameObject GetCurrentSwitchObj(){print("GetCurrentSwitchObj:" + currentIndex);var name = list[currentIndex].ObjName;print("GetCurrentSwitchObj:" + name);var obj = UHelper.FindTheChild(this.gameObject, name).gameObject;return obj;}public MSwitchParts GetCurrentSwitchInfo(){return list[currentIndex];}
}

3.效果展示

标注显示效果不理想。这时我们在添加一个脚本使得标注总是看向主摄像机。

添加脚本LookCamera。


using UnityEngine;public class LookCamera : MonoBehaviour
{Transform m_Camera;public Camera myCamera;void Start(){if (myCamera != null){m_Camera = myCamera.transform;}else{m_Camera = Camera.main.transform;}}// Update is called once per framevoid LateUpdate(){// 这里我的角色朝向和UI朝向是相反的，如果直接用LookAt()还需要把每个UI元素旋转过来。// 为了简单，用了下面这个方法。它实际上是一个反向旋转，可以简单理解为“负负得正”吧transform.rotation = Quaternion.LookRotation(transform.position - m_Camera.position);}}

最终效果

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Unity 3D模型展示之生成标注

1.效果图

2.生成标注

3.效果展示

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