【Unity3D】利用IJob、Burst优化处理切割物体

参考文章： 

【Unity】切割网格

【Unity3D】ECS入门学习（一）导入及基础学习_unity ecs教程-CSDN博客 

【Unity3D】ECS入门学习（十二）IJob、IJobFor、IJobParallelFor_unity ijobparallelfor-CSDN博客

工程资源地址： 

BStandShaderResources/job_burst_cut_demo.unitypackage at master · AMikeW/BStandShaderResources · GitHub

优化前

使用Job、Burst会将切割数据处理放到一个非主线程处理，并行加速计算。
麻烦的地方是所有List<T>都要改成NativeArray，所有Dictionary<K,V>都要改成NativeHashMap<K,V>，以及不能传递GameObject,Transform等，也就是不能有任何的引用类型对象出现在继承了IJob接口的脚本，而且CutJob是一个struct结构体。

注意：在CutManager脚本，必须引入：using Unity.Jobs; 才能使用job.Schedule接口方法，因为这玩意并不是IJor的方法，毕竟IJor只是个接口，它是一个扩展方法。

namespace Unity.Jobs
{//// 摘要://     Extension methods for Jobs using the IJob interface.public static class IJobExtensions{public static void Run<T>(this T jobData) where T : struct, IJob;public static JobHandle Schedule<T>(this T jobData, JobHandle dependsOn = default) where T : struct, IJob;}
}

  只会切割CutGo标签的物体 

开启Job

using System;
using System.Collections;
using System.Collections.Generic;
using Unity.Collections;
using Unity.Jobs;
using UnityEngine;/// <summary>
/// 切割平面信息
/// </summary>
public class CutInfo
{public Vector3 cutPoint;      //对应射线碰撞点public Vector3 cutHorizontal; //对应dirpublic Vector3 cutVertical;//对应verticalpublic Vector3 cutNormal;  //对应normal
}/// <summary>
/// 必须挂在摄像机上才会有GL线条
/// 功能:凸网格切割网格(不支持凹网格)
/// 使用方法:按F开启和禁用切割功能，鼠标指向物体出现辅助线条，滑轮滚动控制切割线条旋转，鼠标左击进行切割物体
/// </summary>
public class CutManager : MonoBehaviour
{private static CutManager _instance;public static CutManager Instance{get { return _instance; }}bool isOn;public bool blockCut;Transform hitTarget;Vector3 hitPos;Vector3 dir;Vector3 cutVerticalDir;Vector3 cutNormalDir;float angle;float scrollSpeed = 25.0f;bool isCutting;Mesh targetMesh;const string TagName = "CutGo";public Transform generatePoint;//使用GL画线所需材质public Material mater;private float force = 0.8f;public float destroyTime = 0.5f;public List<CutInfo> cutInfos; //记录所有正常的切割（防止出现极其相似的切割平面造成奇怪的bug）public Material dissolveMat;private GameObject lastCutObject;private Vector3 cutStartPos;private Vector3 cutEndPos;private Action<float> cutCallback;public bool isUseJob;//试图尝试使用常驻的变量，但测试发现会导致数据混乱，具体表现是切割第二次时，整个模型的顶点乱了，如果使用TempJob临时的则不会发生//NativeArray<Vector3> _tempVert1;//NativeArray<Vector3> _tempVert2;//NativeArray<Vector3> _tempNormal1;//NativeArray<Vector3> _tempNormal2;//NativeArray<int> _tempTriangles1;//NativeArray<int> _tempTriangles2;//NativeArray<Vector2> _uvs1;//NativeArray<Vector2> _uvs2;//NativeHashMap<int, int> _tempIndex1;//NativeHashMap<int, int> _tempIndex2;//NativeArray<int> _temp1CountArray;//NativeArray<int> _temp2CountArray;//NativeArray<Vector3> _localPos;//NativeArray<Vector3> _allPos;//NativeArray<Vector3> targetMeshVert;//NativeArray<Vector3> targetMeshNormal;//NativeArray<int> targetMeshTriangles;private void Awake(){_instance = this;}private void OnDestroy(){//targetMeshVert.Dispose();//targetMeshNormal.Dispose();//targetMeshTriangles.Dispose();//_tempVert1.Dispose();//_tempNormal1.Dispose();//_tempTriangles1.Dispose();//_uvs1.Dispose();//_tempVert2.Dispose();//_tempNormal2.Dispose();//_tempTriangles2.Dispose();//_uvs2.Dispose();//_temp1CountArray.Dispose();//_temp2CountArray.Dispose();//_tempIndex1.Dispose();//_tempIndex2.Dispose();//_localPos.Dispose();//_allPos.Dispose();}void Start(){isOn = false;tempVert1 = new List<Vector3>();tempNormal1 = new List<Vector3>();tempTriangles1 = new List<int>();tempIndex1 = new Dictionary<int, int>();uvs1 = new List<Vector2>();tempVert2 = new List<Vector3>();tempNormal2 = new List<Vector3>();tempTriangles2 = new List<int>();tempIndex2 = new Dictionary<int, int>();uvs2 = new List<Vector2>();localPos = new List<Vector3>();allPos = new List<Vector3>();cutInfos = new List<CutInfo>();//targetMeshVert = new Unity.Collections.NativeArray<Vector3>(5000, Unity.Collections.Allocator.Persistent);//targetMeshNormal = new Unity.Collections.NativeArray<Vector3>(2500, Unity.Collections.Allocator.Persistent);//targetMeshTriangles = new Unity.Collections.NativeArray<int>(9000, Unity.Collections.Allocator.Persistent);//_tempVert1 = new Unity.Collections.NativeArray<Vector3>(5000, Unity.Collections.Allocator.Persistent);//_tempNormal1 = new Unity.Collections.NativeArray<Vector3>(2500, Unity.Collections.Allocator.Persistent);//_tempTriangles1 = new Unity.Collections.NativeArray<int>(9000, Unity.Collections.Allocator.Persistent);//_uvs1 = new Unity.Collections.NativeArray<Vector2>(5000, Unity.Collections.Allocator.Persistent);//_tempIndex1 = new Unity.Collections.NativeHashMap<int, int>(9000, Unity.Collections.Allocator.Persistent);//_temp1CountArray = new NativeArray<int>(5, Allocator.Persistent);//_tempVert2 = new Unity.Collections.NativeArray<Vector3>(5000, Unity.Collections.Allocator.Persistent);//_tempNormal2 = new Unity.Collections.NativeArray<Vector3>(2500, Unity.Collections.Allocator.Persistent);//_tempTriangles2 = new Unity.Collections.NativeArray<int>(9000, Unity.Collections.Allocator.Persistent);//_uvs2 = new Unity.Collections.NativeArray<Vector2>(5000, Unity.Collections.Allocator.Persistent);//_tempIndex2 = new Unity.Collections.NativeHashMap<int, int>(9000, Unity.Collections.Allocator.Persistent);//_temp2CountArray = new NativeArray<int>(5, Allocator.Persistent);//_localPos = new NativeArray<Vector3>(1000, Allocator.Persistent);//_allPos = new NativeArray<Vector3>(1000, Allocator.Persistent);}void Update(){ControlIsOn();ControlCutSpace();}void OnPostRender(){if (!isOn || !isCutting)return;if (!mater){Debug.LogError("Please Assign a material on the inspector");return;}GL.PushMatrix();mater.SetPass(0);GL.Color(Color.yellow);GL.Begin(GL.LINES);GL.Vertex(hitPos + cutVerticalDir * 12f + dir * 1f);GL.Vertex(hitPos - cutVerticalDir * 12f + dir * 1f);GL.Vertex(hitPos + dir * 1f);GL.Vertex(hitPos + cutNormalDir * 0.2f + dir * 1f);GL.End();GL.PopMatrix();}void ControlIsOn(){isOn = true;}void ControlCutSpace(){//射线发射射线计算出射线交点，以射线为轴计算出另外2个轴向 (红线为射线，绿线为垂直于射线和法线的线, 黄线为法线)        Ray ray = Camera.main.ScreenPointToRay(InputController.GetPosition());Debug.DrawRay(Camera.main.transform.position, InputController.GetPosition(), Color.red);RaycastHit hit;if (Physics.Raycast(ray, out hit)){if (hit.transform.tag != TagName){TryCut();cutStartPos = Vector3.zero;cutEndPos = Vector3.zero;return;}if (cutStartPos == null || cutStartPos == Vector3.zero){cutStartPos = hit.point;}isCutting = true;hitTarget = hit.transform;hitPos = hit.point;cutEndPos = hitPos;MeshFilter meshFilter = hit.transform.GetComponent<MeshFilter>();if (meshFilter != null){targetMesh = hit.transform.GetComponent<MeshFilter>().mesh;}else{Debug.LogWarning("尝试切割没有网格的物品");cutStartPos = Vector3.zero;cutEndPos = Vector3.zero;return;}//dir = (Camera.main.transform.position - hitPos).normalized;//cutVerticalDir = (Vector3.Dot(dir, Vector3.up) * -dir + Vector3.up).normalized;//dir和cutVerticalDir保持垂直使用鼠标滚轮旋转切割平面//if (Input.GetAxis("Mouse ScrollWheel") < 0)//{//    angle += scrollSpeed * Time.deltaTime;//}//else if (Input.GetAxis("Mouse ScrollWheel") > 0)//{//    angle -= scrollSpeed * Time.deltaTime;//}//cutVerticalDir = Quaternion.AngleAxis(Mathf.Rad2Deg * angle, dir) * cutVerticalDir; //围绕dir轴旋转//cutNormalDir = Vector3.Cross(dir, cutVerticalDir).normalized; //计算出切割面的法线#if DEBUG//Debug.DrawRay(hitPos, cutVerticalDir, Color.green);//Debug.DrawRay(hitPos, dir, Color.red);//Debug.DrawRay(hitPos, cutNormalDir, Color.yellow);
#endif            }else{TryCut();cutStartPos = Vector3.zero;cutEndPos = Vector3.zero;isCutting = false;}滑动切割//Ray ray1 = Camera.main.ScreenPointToRay(InputController.GetPosition());//Physics.Raycast(ray);//if (Input.GetKeyDown(KeyCode.Mouse0))//{//    CutInfo tempCutInfo = new CutInfo();//    tempCutInfo.cutHorizontal = dir;//    tempCutInfo.cutVertical = cutVerticalDir;//    tempCutInfo.cutNormal = cutNormalDir;//    Cutting();//}}IEnumerator TryCutting1(){for (int i = 0; i < 3; i++){if ((cutEndPos != null && cutEndPos != Vector3.zero) && (cutStartPos != null && cutStartPos != Vector3.zero)){isCutting = true;var point = (cutStartPos + cutEndPos) / 2;dir = (Camera.main.transform.position - point).normalized;var tempDir = (cutEndPos - cutStartPos).normalized;cutVerticalDir = (Vector3.Dot(dir, tempDir) * -dir + tempDir).normalized;//dir和cutVerticalDir保持垂直cutNormalDir = Vector3.Cross(dir, cutVerticalDir).normalized; //计算出切割面的法线Cutting();yield return new WaitForSeconds(0.1f);}}cutEndPos = Vector3.zero;cutStartPos = Vector3.zero;}private void TryCut(){if (!blockCut && (cutEndPos != null && cutEndPos != Vector3.zero) && (cutStartPos != null && cutStartPos != Vector3.zero)){isCutting = true;var point = (cutStartPos + cutEndPos) / 2;dir = (Camera.main.transform.position - point).normalized;var tempDir = (cutEndPos - cutStartPos).normalized;cutVerticalDir = (Vector3.Dot(dir, tempDir) * -dir + tempDir).normalized;//dir和cutVerticalDir保持垂直cutNormalDir = Vector3.Cross(dir, cutVerticalDir).normalized; //计算出切割面的法线Cutting();}cutEndPos = Vector3.zero;cutStartPos = Vector3.zero;isCutting = false;}private bool IsValidCutInfo(Vector3 dir, Vector3 vertical, Vector3 normal){float limitValue = 0.15f;foreach (var v in cutInfos){if (Mathf.Abs(dir.x - v.cutHorizontal.x) < limitValue && Mathf.Abs(dir.y - v.cutHorizontal.y) < limitValue && Mathf.Abs(dir.z - v.cutHorizontal.z) < limitValue&& Mathf.Abs(vertical.x - v.cutVertical.x) < limitValue && Mathf.Abs(vertical.y - v.cutVertical.y) < limitValue && Mathf.Abs(vertical.z - v.cutVertical.z) < limitValue&& Mathf.Abs(normal.x - v.cutNormal.x) < limitValue && Mathf.Abs(normal.y - v.cutNormal.y) < limitValue && Mathf.Abs(normal.z - v.cutNormal.z) < limitValue){return false;}}return true;}List<Vector3> tempVert1;List<Vector3> tempNormal1;List<int> tempTriangles1;Dictionary<int, int> tempIndex1;List<Vector2> uvs1;List<Vector3> tempVert2;List<Vector3> tempNormal2;List<int> tempTriangles2;Dictionary<int, int> tempIndex2;List<Vector2> uvs2;int[] triangles;List<Vector3> localPos;List<Vector3> allPos;void Cutting(){if (!isCutting || !isOn || targetMesh == null || hitTarget == null)return;tempVert1.Clear();tempNormal1.Clear();tempTriangles1.Clear();tempIndex1.Clear();uvs1.Clear();tempVert2.Clear();tempNormal2.Clear();tempTriangles2.Clear();tempIndex2.Clear();uvs2.Clear();allPos.Clear();System.Diagnostics.Stopwatch sw = System.Diagnostics.Stopwatch.StartNew();if (isUseJob){CutJob job = new CutJob();var vertices = targetMesh.vertices;var normals = targetMesh.normals;var triangles = targetMesh.triangles;var _tempVert1 = new Unity.Collections.NativeArray<Vector3>(5000, Unity.Collections.Allocator.TempJob);var _tempNormal1 = new Unity.Collections.NativeArray<Vector3>(2500, Unity.Collections.Allocator.TempJob);var _tempTriangles1 = new Unity.Collections.NativeArray<int>(9000, Unity.Collections.Allocator.TempJob);var _uvs1 = new Unity.Collections.NativeArray<Vector2>(5000, Unity.Collections.Allocator.TempJob);var _tempIndex1 = new Unity.Collections.NativeHashMap<int, int>(9000, Unity.Collections.Allocator.TempJob);var _temp1CountArray = new NativeArray<int>(5, Allocator.TempJob);var _tempVert2 = new Unity.Collections.NativeArray<Vector3>(5000, Unity.Collections.Allocator.TempJob);var _tempNormal2 = new Unity.Collections.NativeArray<Vector3>(2500, Unity.Collections.Allocator.TempJob);var _tempTriangles2 = new Unity.Collections.NativeArray<int>(9000, Unity.Collections.Allocator.TempJob);var _uvs2 = new Unity.Collections.NativeArray<Vector2>(5000, Unity.Collections.Allocator.TempJob);var _tempIndex2 = new Unity.Collections.NativeHashMap<int, int>(9000, Unity.Collections.Allocator.TempJob);var _temp2CountArray = new NativeArray<int>(5, Allocator.TempJob);var _localPos = new NativeArray<Vector3>(1000, Allocator.TempJob);var _allPos = new NativeArray<Vector3>(1000, Allocator.TempJob);var targetMeshVert = new Unity.Collections.NativeArray<Vector3>(vertices.Length, Unity.Collections.Allocator.TempJob);var targetMeshNormal = new Unity.Collections.NativeArray<Vector3>(normals.Length, Unity.Collections.Allocator.TempJob);var targetMeshTriangles = new Unity.Collections.NativeArray<int>(triangles.Length, Unity.Collections.Allocator.TempJob);for (int i = 0; i < vertices.Length; i++){targetMeshVert[i] = vertices[i];}job.targetMeshVert = targetMeshVert;for (int i = 0; i < normals.Length; i++){targetMeshNormal[i] = normals[i];}job.targetMeshNormal = targetMeshNormal;for (int i = 0; i < triangles.Length; i++){targetMeshTriangles[i] = triangles[i];}job.targetMeshTriangles_Count = triangles.Length;job.targetMeshTriangles = targetMeshTriangles;//job.hitTarget = hitTarget;job.hitTarget_LocalScale = hitTarget.localScale;job.hitTarget_o2w = hitTarget.localToWorldMatrix;job.hitTarget_w2o = hitTarget.worldToLocalMatrix;job.hitPos = hitPos;job.dir = dir;job.cutVerticalDir = cutVerticalDir;job.cutNormalDir = cutNormalDir;job.tempVert1_Count = 0;job.tempVert1 = _tempVert1;job.tempNormal1_Count = 0;job.tempNormal1 = _tempNormal1;job.tempTriangles1_Count = 0;job.tempTriangles1 = _tempTriangles1;job.uvs1_Count = 0;job.uvs1 = _uvs1;job.tempIndex1 = _tempIndex1;job.temp1CountArray = _temp1CountArray;job.tempVert2_Count = 0;job.tempVert2 = _tempVert2;job.tempNormal2_Count = 0;job.tempNormal2 = _tempNormal2;job.tempTriangles2_Count = 0;job.tempTriangles2 = _tempTriangles2;job.uvs2_Count = 0;job.uvs2 = _uvs2;job.tempIndex2 = _tempIndex2;job.temp2CountArray = _temp2CountArray;job.localPos = _localPos;job.allPos = _allPos;JobHandle jobHandle = job.Schedule();jobHandle.Complete();//数据转化 切割后的2个模型数据(顶点、法线、索引、UV)int temp1_VertCount = job.temp1CountArray[0];int temp1_NormalCount = job.temp1CountArray[1];int temp1_TrianglesCount = job.temp1CountArray[2];int temp1_UvsCount = job.temp1CountArray[3];int temp2_VertCount = job.temp2CountArray[0];int temp2_NormalCount = job.temp2CountArray[1];int temp2_TrianglesCount = job.temp2CountArray[2];int temp2_UvsCount = job.temp2CountArray[3];for (int i = 0; i < temp1_VertCount; i++){tempVert1.Add(_tempVert1[i]);}for (int i = 0; i < temp2_VertCount; i++){tempVert2.Add(_tempVert2[i]);}for (int i = 0; i < temp1_NormalCount; i++){tempNormal1.Add(_tempNormal1[i]);}for (int i = 0; i < temp2_NormalCount; i++){tempNormal2.Add(_tempNormal2[i]);}for (int i = 0; i < temp1_TrianglesCount; i++){tempTriangles1.Add(_tempTriangles1[i]);}for (int i = 0; i < temp2_TrianglesCount; i++){tempTriangles2.Add(_tempTriangles2[i]);}for (int i = 0; i < temp1_UvsCount; i++){uvs1.Add(_uvs1[i]);}for (int i = 0; i < temp2_UvsCount; i++){uvs2.Add(_uvs2[i]);}//>>>>>>>>>>>>>>>>>>>>>>>>>>>>第一个切割出的物体开始构建Mesh originMesh = new Mesh(), newMesh = new Mesh();       originMesh.vertices = tempVert1.ToArray();originMesh.normals = tempNormal1.ToArray();originMesh.triangles = tempTriangles1.ToArray();originMesh.uv = uvs1.ToArray();hitTarget.GetComponent<MeshFilter>().mesh = originMesh;Collider collider = hitTarget.GetComponent<Collider>();if (collider != null){Destroy(collider);}//hitTarget.gameObject.AddComponent<BoxCollider>();MeshCollider meshCollider = hitTarget.gameObject.AddComponent<MeshCollider>();hitTarget.gameObject.tag = TagName;hitTarget.gameObject.layer = 11;hitTarget.SetParent(generatePoint);float obj1Volume = CalculateVolumeHelper.CalculateSumVolume(hitTarget.transform.lossyScale, hitTarget.GetComponent<MeshFilter>());//>>>>>>>>>>>>>>>>>>>>>>>>>>切割出的第二个物体开始构建newMesh.vertices = tempVert2.ToArray();newMesh.normals = tempNormal2.ToArray();newMesh.triangles = tempTriangles2.ToArray();newMesh.uv = uvs2.ToArray();GameObject newobj = new GameObject();newobj.transform.position = hitTarget.position;newobj.transform.rotation = hitTarget.rotation;newobj.transform.localScale = hitTarget.localScale;newobj.AddComponent<MeshFilter>().mesh = newMesh;newobj.AddComponent<MeshRenderer>();Material mat = hitTarget.GetComponent<MeshRenderer>().material;newobj.GetComponent<MeshRenderer>().material = new Material(mat);newobj.tag = TagName;newobj.layer = 11;newobj.transform.SetParent(generatePoint);//顶点少的情况可以使用它 否则会报错超出顶点限制MeshCollider meshCollider2 = newobj.AddComponent<MeshCollider>();try{meshCollider.convex = true;meshCollider2.convex = true;}catch (Exception e){Debug.LogWarning(e.Message);}float obj2Volume = CalculateVolumeHelper.CalculateSumVolume(newobj.transform.lossyScale, newobj.GetComponent<MeshFilter>());//this.cutCallback(Mathf.Min(obj1Volume, obj2Volume));//比较两者体积，较小的一个进行添加刚体 自由落体...if (obj1Volume < obj2Volume){//hitTarget物体掉落 消失Rigidbody rigidbody1 = hitTarget.gameObject.GetOrAddComponent<Rigidbody>();rigidbody1.AddForce((hitTarget.InverseTransformDirection(cutNormalDir) * force), ForceMode.Impulse); //可去掉这个力            CutObjectDestroyBySelf cutObjectDestroyBySelf = hitTarget.gameObject.GetComponent<CutObjectDestroyBySelf>();if (!cutObjectDestroyBySelf){cutObjectDestroyBySelf = hitTarget.gameObject.AddComponent<CutObjectDestroyBySelf>();cutObjectDestroyBySelf.time = destroyTime;}cutObjectDestroyBySelf.SetMat(dissolveMat);Rigidbody newobjRigidbody = newobj.GetComponent<Rigidbody>();if (newobjRigidbody){Destroy(newobjRigidbody);}lastCutObject = newobj;}else{Rigidbody rigidbody2 = newobj.GetOrAddComponent<Rigidbody>();rigidbody2.AddForce(-newobj.transform.InverseTransformDirection(cutNormalDir) * force, ForceMode.Impulse);//可去掉这个力            CutObjectDestroyBySelf cutObjectDestroyBySelf = newobj.GetComponent<CutObjectDestroyBySelf>();if (!cutObjectDestroyBySelf){cutObjectDestroyBySelf = newobj.AddComponent<CutObjectDestroyBySelf>();cutObjectDestroyBySelf.time = destroyTime;}cutObjectDestroyBySelf.SetMat(dissolveMat);Rigidbody hitTargetRigidbody = hitTarget.gameObject.GetComponent<Rigidbody>();if (hitTargetRigidbody){Destroy(hitTargetRigidbody);}lastCutObject = hitTarget.gameObject;}//Destroy(newobj, 5f);targetMeshVert.Dispose();targetMeshNormal.Dispose();targetMeshTriangles.Dispose();_tempVert1.Dispose();_tempNormal1.Dispose();_tempTriangles1.Dispose();_uvs1.Dispose();_tempVert2.Dispose();_tempNormal2.Dispose();_tempTriangles2.Dispose();_uvs2.Dispose();_temp1CountArray.Dispose();_temp2CountArray.Dispose();_tempIndex1.Dispose();_tempIndex2.Dispose();_localPos.Dispose();_allPos.Dispose();}else{triangles = targetMesh.triangles;for (int i = 0; i < triangles.Length; i += 3){int index1 = triangles[i];int index2 = triangles[i + 1];int index3 = triangles[i + 2];Vector3 vertex1 = targetMesh.vertices[index1];Vector3 vertex2 = targetMesh.vertices[index2];Vector3 vertex3 = targetMesh.vertices[index3];float vert1 = Vector3.Dot(cutNormalDir, (hitTarget.TransformPoint(vertex1) - hitPos).normalized);float vert2 = Vector3.Dot(cutNormalDir, (hitTarget.TransformPoint(vertex2) - hitPos).normalized);float vert3 = Vector3.Dot(cutNormalDir, (hitTarget.TransformPoint(vertex3) - hitPos).normalized);if (vert1 >= 0 && vert2 >= 0 && vert3 >= 0){//同面if (!tempIndex1.ContainsKey(index1)) //过滤相同顶点{tempVert1.Add(vertex1);tempNormal1.Add(targetMesh.normals[index1]);tempIndex1.Add(index1, tempVert1.Count - 1); //旧索引为key,新索引为value}if (!tempIndex1.ContainsKey(index2)) //过滤相同顶点{tempVert1.Add(vertex2);tempNormal1.Add(targetMesh.normals[index2]);tempIndex1.Add(index2, tempVert1.Count - 1); //旧索引为key,新索引为value}if (!tempIndex1.ContainsKey(index3)) //过滤相同顶点{tempVert1.Add(vertex3);tempNormal1.Add(targetMesh.normals[index3]);tempIndex1.Add(index3, tempVert1.Count - 1); //旧索引为key,新索引为value}tempTriangles1.Add(tempIndex1[index1]); //使用旧索引index1 获取对应的新索引tempTriangles1.Add(tempIndex1[index2]); //使用旧索引index2 获取对应的新索引tempTriangles1.Add(tempIndex1[index3]); //使用旧索引index3 获取对应的新索引if (tempIndex1[index1] == tempIndex1[index2] || tempIndex1[index1] == tempIndex1[index3] || tempIndex1[index2] == tempIndex1[index3]){Debug.LogError("[1]問題");}}else if (vert1 <= 0 && vert2 <= 0 && vert3 <= 0){//另一个同面                if (!tempIndex2.ContainsKey(index1)) //过滤相同顶点{tempVert2.Add(vertex1);tempNormal2.Add(targetMesh.normals[index1]);tempIndex2.Add(index1, tempVert2.Count - 1); //旧索引为key,新索引为value}if (!tempIndex2.ContainsKey(index2)) //过滤相同顶点{tempVert2.Add(vertex2);tempNormal2.Add(targetMesh.normals[index2]);tempIndex2.Add(index2, tempVert2.Count - 1); //旧索引为key,新索引为value}if (!tempIndex2.ContainsKey(index3)) //过滤相同顶点{tempVert2.Add(vertex3);tempNormal2.Add(targetMesh.normals[index3]);tempIndex2.Add(index3, tempVert2.Count - 1); //旧索引为key,新索引为value}tempTriangles2.Add(tempIndex2[index1]); //使用旧索引index1 获取对应的新索引tempTriangles2.Add(tempIndex2[index2]); //使用旧索引index2 获取对应的新索引tempTriangles2.Add(tempIndex2[index3]); //使用旧索引index3 获取对应的新索引if (tempIndex2[index1] == tempIndex2[index2] || tempIndex2[index1] == tempIndex2[index3] || tempIndex2[index2] == tempIndex2[index3]){Debug.LogError("[2]問題");}}else{//continue;localPos.Clear();//不同面情况 (PS：不存在3点不同面情况）bool isV1V2Sample = (vert1 > 0 && vert2 > 0 || vert1 < 0 && vert2 < 0);bool isV2V3Sample = (vert2 > 0 && vert3 > 0 || vert2 < 0 && vert3 < 0);bool isV3V1Sample = (vert3 > 0 && vert1 > 0 || vert3 < 0 && vert1 < 0);Vector3 normal = Vector3.Cross(vertex2 - vertex1, vertex3 - vertex2);//1. index1 和 index2 顶点不同面if (!(isV1V2Sample)){CaculateIntersectionPoint(vertex1, vertex2);}//2. index2 和 index3 顶点不同面if (!(isV2V3Sample)){CaculateIntersectionPoint(vertex2, vertex3);}//3. index3 和 index1 顶点不同面if (!(isV3V1Sample)){CaculateIntersectionPoint(vertex3, vertex1);}//此时localPos保存2个交点, allPos是保存所有交点的if (isV1V2Sample){if (vert1 > 0 && vert2 > 0){if (index1 == index2){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>1 : " + index1);}ConnectPointToTriangle(index1, index2, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index3);ConnectPointToTriangle(index3, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2);}else{if (index1 == index2){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>2 : " + index1);}ConnectPointToTriangle(index1, index2, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index3);ConnectPointToTriangle(index3, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1);}}if (isV2V3Sample){if (vert2 > 0 && vert3 > 0){if (index2 == index3){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>3 : " + index2);}ConnectPointToTriangle(index2, index3, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index1);ConnectPointToTriangle(index1, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2);}else{if (index2 == index3){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>4 : " + index2);}ConnectPointToTriangle(index2, index3, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index1);ConnectPointToTriangle(index1, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1);}}if (isV3V1Sample){if (vert3 > 0 && vert1 > 0){if (index3 == index1){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>5 : " + index3);}ConnectPointToTriangle(index3, index1, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index2);ConnectPointToTriangle(index2, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2);}else{if (index3 == index1){Debug.LogError(">>>>>>>>>>>>>>>>>>>>>6 : " + index3);}ConnectPointToTriangle(index3, index1, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index2);ConnectPointToTriangle(index2, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1);}}}}//补全截面FillCutSurface();//注释下面两行代码,UV纹理全没但报错没了（目前UV组成有问题可能会导致模型某一面完全透明）//BUG已查明:上面代码生成新2个网格数据 会存在三角面的3个顶点位置数据一样，导致UV无法正常出现，因此此时简单地做个后处理 剔除这些异常三角面 ...      //bool isFilter1 = TempFuncFilterErrorTriangle(ref tempVert1, ref tempTriangles1, ref tempNormal1); //依然有问题 待修复...//bool isFilter2 = TempFuncFilterErrorTriangle(ref tempVert2, ref tempTriangles2, ref tempNormal2);CalculateUV(hitTarget.transform.localScale, tempVert1, tempTriangles1, tempNormal1, ref uvs1);CalculateUV(hitTarget.transform.localScale, tempVert2, tempTriangles2, tempNormal2, ref uvs2);//>>>>>>>>>>>>>>>>>>>>>>>>>>>>第一个切割出的物体开始构建Mesh originMesh = new Mesh(), newMesh = new Mesh();originMesh.vertices = tempVert1.ToArray();originMesh.normals = tempNormal1.ToArray();originMesh.triangles = tempTriangles1.ToArray();originMesh.uv = uvs1.ToArray();hitTarget.GetComponent<MeshFilter>().mesh = originMesh;Collider collider = hitTarget.GetComponent<Collider>();if (collider != null){Destroy(collider);}//hitTarget.gameObject.AddComponent<BoxCollider>();MeshCollider meshCollider = hitTarget.gameObject.AddComponent<MeshCollider>();hitTarget.gameObject.tag = TagName;hitTarget.gameObject.layer = 11;hitTarget.SetParent(generatePoint);float obj1Volume = CalculateVolumeHelper.CalculateSumVolume(hitTarget.transform.lossyScale, hitTarget.GetComponent<MeshFilter>());//>>>>>>>>>>>>>>>>>>>>>>>>>>切割出的第二个物体开始构建newMesh.vertices = tempVert2.ToArray();newMesh.normals = tempNormal2.ToArray();newMesh.triangles = tempTriangles2.ToArray();newMesh.uv = uvs2.ToArray();GameObject newobj = new GameObject();newobj.transform.position = hitTarget.position;newobj.transform.rotation = hitTarget.rotation;newobj.transform.localScale = hitTarget.localScale;newobj.AddComponent<MeshFilter>().mesh = newMesh;newobj.AddComponent<MeshRenderer>();Material mat = hitTarget.GetComponent<MeshRenderer>().material;newobj.GetComponent<MeshRenderer>().material = new Material(mat);newobj.tag = TagName;newobj.layer = 11;newobj.transform.SetParent(generatePoint);//顶点少的情况可以使用它 否则会报错超出顶点限制MeshCollider meshCollider2 = newobj.AddComponent<MeshCollider>();try{meshCollider.convex = true;meshCollider2.convex = true;}catch (Exception e){Debug.LogWarning(e.Message);}float obj2Volume = CalculateVolumeHelper.CalculateSumVolume(newobj.transform.lossyScale, newobj.GetComponent<MeshFilter>());//this.cutCallback(Mathf.Min(obj1Volume, obj2Volume));//比较两者体积，较小的一个进行添加刚体 自由落体...if (obj1Volume < obj2Volume){//hitTarget物体掉落 消失Rigidbody rigidbody1 = hitTarget.gameObject.GetOrAddComponent<Rigidbody>();rigidbody1.AddForce((hitTarget.InverseTransformDirection(cutNormalDir) * force), ForceMode.Impulse); //可去掉这个力            CutObjectDestroyBySelf cutObjectDestroyBySelf = hitTarget.gameObject.GetComponent<CutObjectDestroyBySelf>();if (!cutObjectDestroyBySelf){cutObjectDestroyBySelf = hitTarget.gameObject.AddComponent<CutObjectDestroyBySelf>();cutObjectDestroyBySelf.time = destroyTime;}cutObjectDestroyBySelf.SetMat(dissolveMat);Rigidbody newobjRigidbody = newobj.GetComponent<Rigidbody>();if (newobjRigidbody){Destroy(newobjRigidbody);}lastCutObject = newobj;}else{Rigidbody rigidbody2 = newobj.GetOrAddComponent<Rigidbody>();rigidbody2.AddForce(-newobj.transform.InverseTransformDirection(cutNormalDir) * force, ForceMode.Impulse);//可去掉这个力            CutObjectDestroyBySelf cutObjectDestroyBySelf = newobj.GetComponent<CutObjectDestroyBySelf>();if (!cutObjectDestroyBySelf){cutObjectDestroyBySelf = newobj.AddComponent<CutObjectDestroyBySelf>();cutObjectDestroyBySelf.time = destroyTime;}cutObjectDestroyBySelf.SetMat(dissolveMat);Rigidbody hitTargetRigidbody = hitTarget.gameObject.GetComponent<Rigidbody>();if (hitTargetRigidbody){Destroy(hitTargetRigidbody);}lastCutObject = hitTarget.gameObject;}//Destroy(newobj, 5f);}sw.Stop();Debug.Log($"代码块执行时间: {sw.ElapsedMilliseconds} 毫秒"); // 输出执行时间}bool IsEqualFloat(float a, float b){float num = a - b;if (num < 0.01f && num > -0.01f){return true;}return false;}bool IsEqualTwoPoint(Vector3 a, Vector3 b){if (IsEqualFloat(a.x, b.x) && IsEqualFloat(a.y, b.y) && IsEqualFloat(a.z, b.z)){return true;}return false;}//临时方法过滤异常三角面bool TempFuncFilterErrorTriangle(ref List<Vector3> vertices, ref List<int> triangles, ref List<Vector3> normals){bool isFilter = false;List<Vector3> newVertices = new List<Vector3>();List<int> newTriangles = new List<int>();List<Vector3> newNormals = new List<Vector3>();int index = 0;//剔除三角面的3个顶点位置数据全相同的三角面for (int i = 0; i < triangles.Count / 3; i++){int i0 = triangles[i * 3];int i1 = triangles[i * 3 + 1];int i2 = triangles[i * 3 + 2];Vector3 v0 = vertices[i0];Vector3 v1 = vertices[i1];Vector3 v2 = vertices[i2];if (IsEqualTwoPoint(v0, v1) || IsEqualTwoPoint(v1, v2) || IsEqualTwoPoint(v2, v0)){isFilter = true;//Debug.Log("有过滤!");}else{newVertices.Add(v0);newVertices.Add(v1);newVertices.Add(v2);newTriangles.Add(index++);newTriangles.Add(index++);newTriangles.Add(index++);newNormals.Add(normals[i0]);newNormals.Add(normals[i1]);newNormals.Add(normals[i2]);}}//if (isFilter)//{//    Debug.Log(vertices.Count + ", " + newVertices.Count + "," + triangles.Count + "," + normals.Count);//}vertices = newVertices;triangles = newTriangles;normals = newNormals;return isFilter;}//计算交点void CaculateIntersectionPoint(Vector3 v1, Vector3 v2){Vector3 localIntersectionPointPos = hitTarget.InverseTransformPoint(MathHelper.GetIntersectionPoint(cutNormalDir, hitPos, hitTarget.TransformPoint(v1), hitTarget.TransformPoint(v2)));localPos.Add(localIntersectionPointPos);allPos.Add(localIntersectionPointPos);}void ConnectPointToTriangle(int index, Vector3 p1, Vector3 p2, Vector3 normal, ref List<Vector3> tempVert, ref List<Vector3> tempNormal, ref List<int> tempTriangle, ref Dictionary<int, int> tempIndex){//可能还未添加if (!tempIndex.ContainsKey(index)){tempVert.Add(targetMesh.vertices[index]);tempNormal.Add(targetMesh.normals[index]);tempIndex.Add(index, tempVert.Count - 1);}Vector3 v = targetMesh.vertices[index];Vector3 vp1 = p1 - v;Vector3 p1p2 = p2 - p1;Vector3 p2v = v - p2;tempVert.Add(p1);int p1Index = tempVert.Count - 1;tempVert.Add(p2);int p2Index = tempVert.Count - 1;tempNormal.Add(targetMesh.normals[index]);tempNormal.Add(targetMesh.normals[index]);int vIndex = tempIndex[index];//v -> p1 -> p2if (Vector3.Dot(normal, Vector3.Cross(vp1, p1p2)) > 0){tempTriangle.Add(vIndex);tempTriangle.Add(p1Index);tempTriangle.Add(p2Index);}else{//p2 -> p1 -> vtempTriangle.Add(p2Index);tempTriangle.Add(p1Index);tempTriangle.Add(vIndex);}}void ConnectPointToTriangle(int index1, int index2, Vector3 p1, Vector3 p2, Vector3 normal, ref List<Vector3> tempVert, ref List<Vector3> tempNormal, ref List<int> tempTriangle, ref Dictionary<int, int> tempIndex, int index3){//可能还未添加if (!tempIndex.ContainsKey(index1)){tempVert.Add(targetMesh.vertices[index1]);tempNormal.Add(targetMesh.normals[index1]);tempIndex.Add(index1, tempVert.Count - 1);}if (!tempIndex.ContainsKey(index2)){tempVert.Add(targetMesh.vertices[index2]);tempNormal.Add(targetMesh.normals[index2]);tempIndex.Add(index2, tempVert.Count - 1);}//1.切割点放入tempVert tempNormaltempVert.Add(p1);int p1Index = tempVert.Count - 1;tempVert.Add(p2);int p2Index = tempVert.Count - 1;tempNormal.Add(targetMesh.normals[index1]);tempNormal.Add(targetMesh.normals[index2]);Vector3 v1 = targetMesh.vertices[index1];Vector3 v2 = targetMesh.vertices[index2];//试错方式进行连接Vector3 v1v2 = v2 - v1;Vector3 v2p1 = p1 - v2;Vector3 p1v1 = v1 - p1;//说明是正确的顺时针if (Vector3.Dot(normal, Vector3.Cross(v1v2, v2p1)) > 0){//获取到真正的索引int v1Index = tempIndex[index1];int v2Index = tempIndex[index2];//v1->v2->p1tempTriangle.Add(v1Index);tempTriangle.Add(v2Index);tempTriangle.Add(p1Index);if (v1Index == v2Index || v1Index == p1Index || v2Index == p1Index){Debug.LogError("if(v1Index == v2Index || v1Index == p1Index || v2Index == p1Index) 222");}//Vector3 //1. v2 -> p2, p2->p1 , p1 -> v2  //证明不与另一个三角面相交if (!MathHelper.IsIntectsect(v2, p2, v1, v2) && !MathHelper.IsIntectsect(p2, p1, v1, v2) && !MathHelper.IsIntectsect(p1, v2, v1, v2)&& !MathHelper.IsIntectsect(v2, p2, v2, p1) && !MathHelper.IsIntectsect(p2, p1, v2, p1) && !MathHelper.IsIntectsect(p1, v2, v2, p1)&& !MathHelper.IsIntectsect(v2, p2, p1, v1) && !MathHelper.IsIntectsect(p2, p1, p1, v1) && !MathHelper.IsIntectsect(p1, v2, p1, v1)){Vector3 _v2p2 = p2 - v2;Vector3 _p2p1 = p1 - p2;Vector3 _p1v2 = v2 - p1;//(v2 -> p2 -> p1)if (Vector3.Dot(normal, Vector3.Cross(_v2p2, _p2p1)) > 0){tempTriangle.Add(v2Index);tempTriangle.Add(p2Index);tempTriangle.Add(p1Index);if (v2Index == p2Index || p2Index == p1Index || p1Index == v2Index){Debug.LogError("if (v2Index == p2Index || p2Index == p1Index || p1Index == v2Index) 1111");}}else{//p1 -> p2 -> v2 (反转)tempTriangle.Add(p1Index);tempTriangle.Add(p2Index);tempTriangle.Add(v2Index);if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index){Debug.LogError(" if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index) 8888");}}}else if (!MathHelper.IsIntectsect(v1, p2, v1, v2) && !MathHelper.IsIntectsect(p2, p1, v1, v2) && !MathHelper.IsIntectsect(p1, v1, v1, v2)&& !MathHelper.IsIntectsect(v1, p2, v2, p1) && !MathHelper.IsIntectsect(p2, p1, v2, p1) && !MathHelper.IsIntectsect(p1, v1, v2, p1)&& !MathHelper.IsIntectsect(v1, p2, p1, v1) && !MathHelper.IsIntectsect(p2, p1, p1, v1) && !MathHelper.IsIntectsect(p1, v1, p1, v1)){//2. v1->p2, p2->p1, p1->v1Vector3 _v1p2 = p2 - v1;Vector3 _p2p1 = p1 - p2;Vector3 _p1v1 = v1 - p1;//(v1 -> p2 -> p1)if (Vector3.Dot(normal, Vector3.Cross(_v1p2, _p2p1)) > 0){tempTriangle.Add(v1Index);tempTriangle.Add(p2Index);tempTriangle.Add(p1Index);if (v1Index == p2Index || p2Index == p1Index || p1Index == v1Index){Debug.LogError(" if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index) 8888");}}else{//p1 -> p2 -> v1 (反转)tempTriangle.Add(p1Index);tempTriangle.Add(p2Index);tempTriangle.Add(v1Index);if (p1Index == p2Index || p2Index == v1Index || v1Index == p1Index){Debug.LogError("if (p1Index == p2Index || p2Index == v1Index || v1Index == p1Index) 66666");}}}else{//发现是p1,p2是相同的...v1,v2非常相近的情况 没有很大影响 暂时忽略Debug.Log(v1);Debug.Log(v2);Debug.Log(p1 + "\n");Debug.Log(v2);Debug.Log(p2);Debug.Log(p1 + "\n");Debug.Log(v1);Debug.Log(p2);Debug.Log(p1 + "\n");Debug.LogWarning("绝对不会出现的....但是出现过，具体原因未知"); //?? 一般切割2D的平面会出现这种情况，但实际每有很大影响 }}else{//Debug.DrawLine(v1, v2, Color.blue);//Debug.DrawLine(p1, p1, Color.green);//Debug.DrawLine(v2, p1, Color.red);//出现了v1和v2相同情况，p1和p2也相同..然后就这样了//确实是会存在顶点相同的情况这种情况无法构成面应该忽略!if (v1 == p1 || v2 == p1 || v1 == v2){//正常现象 或者你可以控制。。交点确实是有可能存在和v1,v2相同的情况...//Debug.LogError(">>>>111//正常现象 或者你可以控制。。交点确实是有可能存在和v1,v2相同的情况...");}else{//当点之间非常相近时会出现这种情况，暂时忽略。。 或者是API的问题//Debug.Log(index1);//Debug.Log(index2);//Debug.Log(index3);//Debug.Log("v1:" + v1 + "," + (v1 == p1));//Debug.Log("v2:" + v2 + "," + (v2 == p1));//Debug.Log("v3:" + targetMesh.vertices[index3]);//Debug.Log("p1:" + p1);//Debug.Log("p2:" + p2);//Debug.Log("Cross:" + Vector3.Dot(normal, Vector3.Cross(v1v2, v2p1)));p1 -> v2 -> v1 相反//Debug.LogWarning("从逻辑上看，不可能进入! 但是进去了 不知道为什么...");  //????}}}void FillCutSurface(){//Debug.Log("allPos.Count = " + allPos.Count);if (allPos.Count <= 0){//Debug.LogError("切割面的顶点全都没有..."); //?????? 算正常吧???....return;}Vector3 center = (allPos[0] + allPos[allPos.Count / 2]) * 0.5f;Vector3 normal = hitTarget.InverseTransformDirection(cutNormalDir);tempVert1.Add(center);int center1Index = tempVert1.Count - 1;tempNormal1.Add(-normal);tempVert2.Add(center);int center2Index = tempVert2.Count - 1;tempNormal2.Add(normal);for (int i = 0; i < allPos.Count; i += 2){//排除相同顶点的情况，只要有三角面2点位置相同，那就无法构成三角面 忽略...(不然会出问题)if (allPos[i] == allPos[i + 1] || allPos[i] == center || center == allPos[i + 1]){continue;}tempVert1.Add(allPos[i]);int tempVert1AllPos1Index = tempVert1.Count - 1;tempVert1.Add(allPos[i + 1]);int tempVert1AllPos2Index = tempVert1.Count - 1;tempNormal1.Add(-normal);tempNormal1.Add(-normal);Vector3 a1 = allPos[i] - center;//Vector3 a2 = allPos[i + 1] - allPos[i];Vector3 a2 = allPos[i + 1] - center;Vector3 crossA1A2 = Vector3.Cross(a1, a2);if (Vector3.Dot(-normal, crossA1A2) >= 0){tempTriangles1.Add(center1Index);tempTriangles1.Add(tempVert1AllPos1Index);tempTriangles1.Add(tempVert1AllPos2Index);if (center1Index == tempVert1AllPos1Index || center1Index == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index){Debug.Log(center + "," + allPos[i] + "," + allPos[i + 1]+ "\n " + tempVert1.LastIndexOf(center) + "," + tempVert1AllPos1Index + "," + tempVert1AllPos2Index + "," + allPos.Count);Debug.LogError("tempVert1.LastIndexOf(center) == tempVert1AllPos1Index || tempVert1.LastIndexOf(center) == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index 9999999999");}}else{tempTriangles1.Add(tempVert1AllPos2Index);tempTriangles1.Add(tempVert1AllPos1Index);tempTriangles1.Add(center1Index);if (center1Index == tempVert1AllPos1Index || center1Index == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index){Debug.Log(center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +tempVert1.LastIndexOf(center) + "," + tempVert1AllPos1Index + "," + tempVert1AllPos2Index + "," + allPos.Count);Debug.LogError("if (tempVert1.LastIndexOf(center) == tempVert1AllPos1Index || tempVert1.LastIndexOf(center) == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index) -----------");}}tempVert2.Add(allPos[i]);int tempV1Index = tempVert2.Count - 1;tempVert2.Add(allPos[i + 1]);int tempV2Index = tempVert2.Count - 1;tempNormal2.Add(normal);tempNormal2.Add(normal);if (Vector3.Dot(normal, crossA1A2) >= 0){tempTriangles2.Add(center2Index);tempTriangles2.Add(tempV1Index);tempTriangles2.Add(tempV2Index);if (center2Index == tempV1Index || center2Index == tempV2Index || tempV1Index == tempV2Index){Debug.Log(center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +tempVert2.LastIndexOf(center) + "," + tempV1Index + "," + tempV2Index + "," + allPos.Count);Debug.LogError("tempVert2.LastIndexOf(center) == tempV1Index || tempVert2.LastIndexOf(center) == tempV2Index || tempV1Index == tempV2Index /");}}else{tempTriangles2.Add(tempV2Index);tempTriangles2.Add(tempV1Index);tempTriangles2.Add(center2Index);if (center2Index == tempV1Index || center2Index == tempV2Index || tempV1Index == tempV2Index){Debug.Log(center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +tempVert2.LastIndexOf(center) + "," + tempV1Index + "," + tempV2Index + "," + allPos.Count);Debug.LogError("tempVert2.LastIndexOf(center) == tempV1Index || tempVert2.LastIndexOf(center) == tempV2Index || tempV1Index == tempV2Index qqqqqqq");}}}}/// <summary>/// 计算Box的UV方法 /// </summary>void CalculateUV(Vector3 size, List<Vector3> vertices, List<int> triangles, List<Vector3> normals, ref List<Vector2> uvs){uvs = new List<Vector2>();for (int i = 0; i < vertices.Count; i++){uvs.Add(new Vector2(0, 0));}for (int i = 0; i < triangles.Count / 3; i++){int i0 = triangles[i * 3];int i1 = triangles[i * 3 + 1];int i2 = triangles[i * 3 + 2];//Vector3 v0 = vertices[i0] - center + size / 2f;//Vector3 v1 = vertices[i1] - center + size / 2f;//Vector3 v2 = vertices[i2] - center + size / 2f;Vector3 v0 = vertices[i0];Vector3 v1 = vertices[i1];Vector3 v2 = vertices[i2];string str = string.Format("原始数据:({0},{1},{2}) index:({3},{4},{5})", v0.ToString(), v1.ToString(), v2.ToString(), i0, i1, i2);// 除以size.x,y,z是为了缩小范围到[0,1] UV的范围v0 = new Vector3(v0.x / size.x, v0.y / size.y, v0.z / size.z);v1 = new Vector3(v1.x / size.x, v1.y / size.y, v1.z / size.z);v2 = new Vector3(v2.x / size.x, v2.y / size.y, v2.z / size.z);//Vector3 a = v0 - v1;//Vector3 b = v2 - v1; Vector3 a = v1 - v0;Vector3 b = v2 - v1;//我老感觉这法线计算错了...v0->v1-v2             Vector3 dir = normals[i0]; //Vector3.Cross(a, b);  //改用顶点法线作为法线float x = Mathf.Abs(Vector3.Dot(dir, Vector3.right));float y = Mathf.Abs(Vector3.Dot(dir, Vector3.up));float z = Mathf.Abs(Vector3.Dot(dir, Vector3.forward));//法线倾向于X轴，用Z作为X，Y作为Yif (x > y && x > z){uvs[i0] = new Vector2(v0.z, v0.y);uvs[i1] = new Vector2(v1.z, v1.y);uvs[i2] = new Vector2(v2.z, v2.y);}else if (y > z && y > x){//法线倾向于Y轴，用X作为X，Z作为Yuvs[i0] = new Vector2(v0.x, v0.z);uvs[i1] = new Vector2(v1.x, v1.z);uvs[i2] = new Vector2(v2.x, v2.z);}else if (z > x && z > y){//法线倾向于Z轴，用X作为X，Y作为Yuvs[i0] = new Vector2(v0.x, v0.y);uvs[i1] = new Vector2(v1.x, v1.y);uvs[i2] = new Vector2(v2.x, v2.y);}else{//防止出现UV不正常情况uvs[i0] = new Vector2(0, 0);uvs[i1] = new Vector2(1, 1);uvs[i2] = new Vector2(0, 0);//Debug.LogWarning("UV出问题啦..." + x + ", " + y + "," + z + "\n"//    + v0 + ", " + v1 + "," + v2 + " \n"//    + a + ", " + b + "\n"//    + dir + "\n"//    + str);//虽然已经处理了异常三角面，但仍然会出现(x,y,z)全为0的情况...先放任不管看看效果...}}}public void ClearCutInfos(){cutInfos?.Clear();}public void DestroyLastCutObject(){if (lastCutObject != null){Destroy(lastCutObject);}}public void SetLastCutObject(GameObject obj){lastCutObject = obj;}public void AddCutCallback(Action<float> action){cutCallback = action;}
}

using System.Collections;
using System.Collections.Generic;
using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;
using UnityEngine;[BurstCompile]
public struct CutJob : IJob
{public int targetMeshTriangles_Count;public NativeArray<Vector3> targetMeshVert;public NativeArray<Vector3> targetMeshNormal;public NativeArray<int> targetMeshTriangles;public Matrix4x4 hitTarget_o2w;public Matrix4x4 hitTarget_w2o;public Vector3 hitTarget_LocalScale;int localPos_Count;int allPos_Count;public NativeArray<Vector3> localPos;public NativeArray<Vector3> allPos;public int tempVert1_Count;public int tempNormal1_Count;public int tempTriangles1_Count;public int uvs1_Count;public NativeArray<Vector3> tempVert1;public NativeArray<Vector3> tempNormal1;public NativeArray<int> tempTriangles1;public NativeHashMap<int, int> tempIndex1;public NativeArray<Vector2> uvs1;public NativeArray<int> temp1CountArray;public int tempVert2_Count;public int tempNormal2_Count;public int tempTriangles2_Count;public int uvs2_Count;public NativeArray<Vector3> tempVert2;public NativeArray<Vector3> tempNormal2;public NativeArray<int> tempTriangles2;public NativeHashMap<int, int> tempIndex2;public NativeArray<Vector2> uvs2;public NativeArray<int> temp2CountArray;public Vector3 hitPos;public Vector3 dir;public Vector3 cutVerticalDir;public Vector3 cutNormalDir;public void Execute(){Cutting();}#region 切割void Cutting(){//tempVert1.Clear();//tempNormal1.Clear();//tempTriangles1.Clear();//tempIndex1.Clear();//uvs1.Clear();//tempVert2.Clear();//tempNormal2.Clear();//tempTriangles2.Clear();//tempIndex2.Clear();//uvs2.Clear();//allPos.Clear();for (int i = 0; i < targetMeshTriangles.Length; i += 3){int index1 = targetMeshTriangles[i];int index2 = targetMeshTriangles[i + 1];int index3 = targetMeshTriangles[i + 2];Vector3 vertex1 = targetMeshVert[index1];Vector3 vertex2 = targetMeshVert[index2];Vector3 vertex3 = targetMeshVert[index3];float vert1 = Vector3.Dot(cutNormalDir, (hitTarget_o2w.MultiplyPoint(vertex1) - hitPos).normalized);float vert2 = Vector3.Dot(cutNormalDir, (hitTarget_o2w.MultiplyPoint(vertex2) - hitPos).normalized);float vert3 = Vector3.Dot(cutNormalDir, (hitTarget_o2w.MultiplyPoint(vertex3) - hitPos).normalized);if (vert1 >= 0 && vert2 >= 0 && vert3 >= 0){//同面if (!tempIndex1.ContainsKey(index1)) //过滤相同顶点{tempVert1[tempVert1_Count++] = vertex1;tempNormal1[tempNormal1_Count++] = targetMeshNormal[index1];tempIndex1.Add(index1, tempVert1_Count - 1); //旧索引为key,新索引为value}if (!tempIndex1.ContainsKey(index2)) //过滤相同顶点{tempVert1[tempVert1_Count++] = vertex2;tempNormal1[tempNormal1_Count++] = targetMeshNormal[index2];tempIndex1.Add(index2, tempVert1_Count - 1); //旧索引为key,新索引为value}if (!tempIndex1.ContainsKey(index3)) //过滤相同顶点{tempVert1[tempVert1_Count++] = vertex3;tempNormal1[tempNormal1_Count++] = targetMeshNormal[index3];tempIndex1.Add(index3, tempVert1_Count - 1); //旧索引为key,新索引为value}tempTriangles1[tempTriangles1_Count++] = tempIndex1[index1]; //使用旧索引index1 获取对应的新索引tempTriangles1[tempTriangles1_Count++] = tempIndex1[index2]; //使用旧索引index2 获取对应的新索引tempTriangles1[tempTriangles1_Count++] = tempIndex1[index3]; //使用旧索引index3 获取对应的新索引if (tempIndex1[index1] == tempIndex1[index2] || tempIndex1[index1] == tempIndex1[index3] || tempIndex1[index2] == tempIndex1[index3]){//Debug.LogError("[1]問題");}}else if (vert1 <= 0 && vert2 <= 0 && vert3 <= 0){//另一个同面                if (!tempIndex2.ContainsKey(index1)) //过滤相同顶点{tempVert2[tempVert2_Count++] = (vertex1);tempNormal2[tempNormal2_Count++] = (targetMeshNormal[index1]);tempIndex2.Add(index1, tempVert2_Count - 1); //旧索引为key,新索引为value}if (!tempIndex2.ContainsKey(index2)) //过滤相同顶点{tempVert2[tempVert2_Count++] = (vertex2);tempNormal2[tempNormal2_Count++] = (targetMeshNormal[index2]);tempIndex2.Add(index2, tempVert2_Count - 1); //旧索引为key,新索引为value}if (!tempIndex2.ContainsKey(index3)) //过滤相同顶点{tempVert2[tempVert2_Count++] = (vertex3);tempNormal2[tempNormal2_Count++] = (targetMeshNormal[index3]);tempIndex2.Add(index3, tempVert2_Count - 1); //旧索引为key,新索引为value}tempTriangles2[tempTriangles2_Count++] = (tempIndex2[index1]); //使用旧索引index1 获取对应的新索引tempTriangles2[tempTriangles2_Count++] = (tempIndex2[index2]); //使用旧索引index2 获取对应的新索引tempTriangles2[tempTriangles2_Count++] = (tempIndex2[index3]); //使用旧索引index3 获取对应的新索引if (tempIndex2[index1] == tempIndex2[index2] || tempIndex2[index1] == tempIndex2[index3] || tempIndex2[index2] == tempIndex2[index3]){//Debug.LogError("[2]問題");}}else{//continue;localPos_Count = 0;//不同面情况 (PS：不存在3点不同面情况）bool isV1V2Sample = (vert1 > 0 && vert2 > 0 || vert1 < 0 && vert2 < 0);bool isV2V3Sample = (vert2 > 0 && vert3 > 0 || vert2 < 0 && vert3 < 0);bool isV3V1Sample = (vert3 > 0 && vert1 > 0 || vert3 < 0 && vert1 < 0);Vector3 normal = Vector3.Cross(vertex2 - vertex1, vertex3 - vertex2);//1. index1 和 index2 顶点不同面if (!(isV1V2Sample)){CaculateIntersectionPoint(vertex1, vertex2);}//2. index2 和 index3 顶点不同面if (!(isV2V3Sample)){CaculateIntersectionPoint(vertex2, vertex3);}//3. index3 和 index1 顶点不同面if (!(isV3V1Sample)){CaculateIntersectionPoint(vertex3, vertex1);}//此时localPos保存2个交点, allPos是保存所有交点的if (isV1V2Sample){if (vert1 > 0 && vert2 > 0){if (index1 == index2){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>1 : " + index1);}ConnectPointToTriangle(index1, index2, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index3, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);ConnectPointToTriangle(index3, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);}else{if (index1 == index2){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>2 : " + index1);}ConnectPointToTriangle(index1, index2, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index3, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);ConnectPointToTriangle(index3, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);}}if (isV2V3Sample){if (vert2 > 0 && vert3 > 0){if (index2 == index3){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>3 : " + index2);}ConnectPointToTriangle(index2, index3, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index1, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);ConnectPointToTriangle(index1, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);}else{if (index2 == index3){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>4 : " + index2);}ConnectPointToTriangle(index2, index3, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index1, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);ConnectPointToTriangle(index1, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);}}if (isV3V1Sample){if (vert3 > 0 && vert1 > 0){if (index3 == index1){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>5 : " + index3);}ConnectPointToTriangle(index3, index1, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, index2, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);ConnectPointToTriangle(index2, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);}else{if (index3 == index1){//Debug.LogError(">>>>>>>>>>>>>>>>>>>>>6 : " + index3);}ConnectPointToTriangle(index3, index1, localPos[0], localPos[1], normal, ref tempVert2, ref tempNormal2, ref tempTriangles2, ref tempIndex2, index2, ref tempVert2_Count, ref tempNormal2_Count, ref tempTriangles2_Count);ConnectPointToTriangle(index2, localPos[0], localPos[1], normal, ref tempVert1, ref tempNormal1, ref tempTriangles1, ref tempIndex1, ref tempVert1_Count, ref tempNormal1_Count, ref tempTriangles1_Count);}}}}//补全截面FillCutSurface();//注释下面两行代码,UV纹理全没但报错没了（目前UV组成有问题可能会导致模型某一面完全透明）//BUG已查明:上面代码生成新2个网格数据 会存在三角面的3个顶点位置数据一样，导致UV无法正常出现，因此此时简单地做个后处理 剔除这些异常三角面 ...      //bool isFilter1 = TempFuncFilterErrorTriangle(ref tempVert1, ref tempTriangles1, ref tempNormal1); //依然有问题 待修复...//bool isFilter2 = TempFuncFilterErrorTriangle(ref tempVert2, ref tempTriangles2, ref tempNormal2);CalculateUV(hitTarget_LocalScale, ref tempVert1, ref tempTriangles1, ref tempNormal1, ref uvs1, ref tempVert1_Count, ref tempTriangles1_Count, ref tempNormal1_Count, ref uvs1_Count);CalculateUV(hitTarget_LocalScale, ref tempVert2, ref tempTriangles2, ref tempNormal2, ref uvs2, ref tempVert2_Count, ref tempTriangles2_Count, ref tempNormal2_Count, ref uvs2_Count);temp1CountArray[0] = tempVert1_Count;temp1CountArray[1] = tempNormal1_Count;temp1CountArray[2] = tempTriangles1_Count;temp1CountArray[3] = uvs1_Count;temp2CountArray[0] = tempVert2_Count;temp2CountArray[1] = tempNormal2_Count;temp2CountArray[2] = tempTriangles2_Count;temp2CountArray[3] = uvs2_Count;}bool IsEqualFloat(float a, float b){float num = a - b;if (num < 0.01f && num > -0.01f){return true;}return false;}//计算交点void CaculateIntersectionPoint(Vector3 v1, Vector3 v2){Vector3 localIntersectionPointPos = hitTarget_w2o.MultiplyPoint(MathHelper.GetIntersectionPoint(cutNormalDir, hitPos, hitTarget_o2w.MultiplyPoint(v1), hitTarget_o2w.MultiplyPoint(v2)));localPos[localPos_Count++] = (localIntersectionPointPos);allPos[allPos_Count++] = (localIntersectionPointPos);}void ConnectPointToTriangle(int index, Vector3 p1, Vector3 p2, Vector3 normal, ref NativeArray<Vector3> tempVert, ref NativeArray<Vector3> tempNormal, ref NativeArray<int> tempTriangle, ref NativeHashMap<int, int> tempIndex, ref int tempVertCount, ref int tempNormalCount, ref int tempTriangleCount){//可能还未添加if (!tempIndex.ContainsKey(index)){tempVert[tempVertCount++] = (targetMeshVert[index]);tempNormal[tempNormalCount++] = (targetMeshNormal[index]);tempIndex.Add(index, tempVertCount - 1);}Vector3 v = targetMeshVert[index];Vector3 vp1 = p1 - v;Vector3 p1p2 = p2 - p1;Vector3 p2v = v - p2;tempVert[tempVertCount++] = (p1);int p1Index = tempVertCount - 1;tempVert[tempVertCount++] = (p2);int p2Index = tempVertCount - 1;tempNormal[tempNormalCount++] = (targetMeshNormal[index]);tempNormal[tempNormalCount++] = (targetMeshNormal[index]);int vIndex = tempIndex[index];//v -> p1 -> p2if (Vector3.Dot(normal, Vector3.Cross(vp1, p1p2)) > 0){tempTriangle[tempTriangleCount++] = (vIndex);tempTriangle[tempTriangleCount++] = (p1Index);tempTriangle[tempTriangleCount++] = (p2Index);}else{//p2 -> p1 -> vtempTriangle[tempTriangleCount++] = (p2Index);tempTriangle[tempTriangleCount++] = (p1Index);tempTriangle[tempTriangleCount++] = (vIndex);}}void ConnectPointToTriangle(int index1, int index2, Vector3 p1, Vector3 p2, Vector3 normal, ref NativeArray<Vector3> tempVert, ref NativeArray<Vector3> tempNormal, ref NativeArray<int> tempTriangle, ref NativeHashMap<int, int> tempIndex, int index3, ref int tempVertCount, ref int tempNormalCount, ref int tempTriangleCount){//可能还未添加if (!tempIndex.ContainsKey(index1)){tempVert[tempVertCount++] = (targetMeshVert[index1]);tempNormal[tempNormalCount++] = (targetMeshNormal[index1]);tempIndex.Add(index1, tempVertCount - 1);}if (!tempIndex.ContainsKey(index2)){tempVert[tempVertCount++] = (targetMeshVert[index2]);tempNormal[tempNormalCount++] = (targetMeshNormal[index2]);tempIndex.Add(index2, tempVertCount - 1);}//1.切割点放入tempVert tempNormaltempVert[tempVertCount++] = (p1);int p1Index = tempVertCount - 1;tempVert[tempVertCount++] = (p2);int p2Index = tempVertCount - 1;tempNormal[tempNormalCount++] = (targetMeshNormal[index1]);tempNormal[tempNormalCount++] = (targetMeshNormal[index2]);Vector3 v1 = targetMeshVert[index1];Vector3 v2 = targetMeshVert[index2];//试错方式进行连接Vector3 v1v2 = v2 - v1;Vector3 v2p1 = p1 - v2;Vector3 p1v1 = v1 - p1;//说明是正确的顺时针if (Vector3.Dot(normal, Vector3.Cross(v1v2, v2p1)) > 0){//获取到真正的索引int v1Index = tempIndex[index1];int v2Index = tempIndex[index2];//v1->v2->p1tempTriangle[tempTriangleCount++] = (v1Index);tempTriangle[tempTriangleCount++] = (v2Index);tempTriangle[tempTriangleCount++] = (p1Index);if (v1Index == v2Index || v1Index == p1Index || v2Index == p1Index){//Debug.LogError("if(v1Index == v2Index || v1Index == p1Index || v2Index == p1Index) 222");}//Vector3 //1. v2 -> p2, p2->p1 , p1 -> v2  //证明不与另一个三角面相交if (!MathHelper.IsIntectsect(v2, p2, v1, v2) && !MathHelper.IsIntectsect(p2, p1, v1, v2) && !MathHelper.IsIntectsect(p1, v2, v1, v2)&& !MathHelper.IsIntectsect(v2, p2, v2, p1) && !MathHelper.IsIntectsect(p2, p1, v2, p1) && !MathHelper.IsIntectsect(p1, v2, v2, p1)&& !MathHelper.IsIntectsect(v2, p2, p1, v1) && !MathHelper.IsIntectsect(p2, p1, p1, v1) && !MathHelper.IsIntectsect(p1, v2, p1, v1)){Vector3 _v2p2 = p2 - v2;Vector3 _p2p1 = p1 - p2;Vector3 _p1v2 = v2 - p1;//(v2 -> p2 -> p1)if (Vector3.Dot(normal, Vector3.Cross(_v2p2, _p2p1)) > 0){tempTriangle[tempTriangleCount++] = (v2Index);tempTriangle[tempTriangleCount++] = (p2Index);tempTriangle[tempTriangleCount++] = (p1Index);if (v2Index == p2Index || p2Index == p1Index || p1Index == v2Index){//Debug.LogError("if (v2Index == p2Index || p2Index == p1Index || p1Index == v2Index) 1111");}}else{//p1 -> p2 -> v2 (反转)tempTriangle[tempTriangleCount++] = (p1Index);tempTriangle[tempTriangleCount++] = (p2Index);tempTriangle[tempTriangleCount++] = (v2Index);if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index){//Debug.LogError(" if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index) 8888");}}}else if (!MathHelper.IsIntectsect(v1, p2, v1, v2) && !MathHelper.IsIntectsect(p2, p1, v1, v2) && !MathHelper.IsIntectsect(p1, v1, v1, v2)&& !MathHelper.IsIntectsect(v1, p2, v2, p1) && !MathHelper.IsIntectsect(p2, p1, v2, p1) && !MathHelper.IsIntectsect(p1, v1, v2, p1)&& !MathHelper.IsIntectsect(v1, p2, p1, v1) && !MathHelper.IsIntectsect(p2, p1, p1, v1) && !MathHelper.IsIntectsect(p1, v1, p1, v1)){//2. v1->p2, p2->p1, p1->v1Vector3 _v1p2 = p2 - v1;Vector3 _p2p1 = p1 - p2;Vector3 _p1v1 = v1 - p1;//(v1 -> p2 -> p1)if (Vector3.Dot(normal, Vector3.Cross(_v1p2, _p2p1)) > 0){tempTriangle[tempTriangleCount++] = (v1Index);tempTriangle[tempTriangleCount++] = (p2Index);tempTriangle[tempTriangleCount++] = (p1Index);if (v1Index == p2Index || p2Index == p1Index || p1Index == v1Index){//Debug.LogError(" if (p1Index == p2Index || p2Index == v2Index || v2Index == p1Index) 8888");}}else{//p1 -> p2 -> v1 (反转)tempTriangle[tempTriangleCount++] = (p1Index);tempTriangle[tempTriangleCount++] = (p2Index);tempTriangle[tempTriangleCount++] = (v1Index);if (p1Index == p2Index || p2Index == v1Index || v1Index == p1Index){//Debug.LogError("if (p1Index == p2Index || p2Index == v1Index || v1Index == p1Index) 66666");}}}else{//发现是p1,p2是相同的...v1,v2非常相近的情况 没有很大影响 暂时忽略//Debug.Log(v1);//Debug.Log(v2);//Debug.Log(p1 + "\n");//Debug.Log(v2);//Debug.Log(p2);//Debug.Log(p1 + "\n");//Debug.Log(v1);//Debug.Log(p2);//Debug.Log(p1 + "\n");//Debug.LogWarning("绝对不会出现的....但是出现过，具体原因未知"); //?? 一般切割2D的平面会出现这种情况，但实际每有很大影响 }}else{//Debug.DrawLine(v1, v2, Color.blue);//Debug.DrawLine(p1, p1, Color.green);//Debug.DrawLine(v2, p1, Color.red);//出现了v1和v2相同情况，p1和p2也相同..然后就这样了//确实是会存在顶点相同的情况这种情况无法构成面应该忽略!if (v1 == p1 || v2 == p1 || v1 == v2){//正常现象 或者你可以控制。。交点确实是有可能存在和v1,v2相同的情况...//Debug.LogError(">>>>111//正常现象 或者你可以控制。。交点确实是有可能存在和v1,v2相同的情况...");}else{//当点之间非常相近时会出现这种情况，暂时忽略。。 或者是API的问题//Debug.Log(index1);//Debug.Log(index2);//Debug.Log(index3);//Debug.Log("v1:" + v1 + "," + (v1 == p1));//Debug.Log("v2:" + v2 + "," + (v2 == p1));//Debug.Log("v3:" + targetMeshVert[index3]);//Debug.Log("p1:" + p1);//Debug.Log("p2:" + p2);//Debug.Log("Cross:" + Vector3.Dot(normal, Vector3.Cross(v1v2, v2p1)));p1 -> v2 -> v1 相反//Debug.LogWarning("从逻辑上看，不可能进入! 但是进去了 不知道为什么...");  //????}}}void FillCutSurface(){//Debug.Log("allPos_Count = " + allPos_Count);if (allPos_Count <= 0){//Debug.LogError("切割面的顶点全都没有..."); //?????? 算正常吧???....return;}Vector3 center = (allPos[0] + allPos[allPos_Count / 2]) * 0.5f;Vector3 normal = hitTarget_w2o.MultiplyVector(cutNormalDir); // hitTarget.InverseTransformDirection(cutNormalDir);tempVert1[tempVert1_Count++] = (center);int center1Index = tempVert1_Count - 1;tempNormal1[tempNormal1_Count++] = (-normal);tempVert2[tempVert2_Count++] = (center);int center2Index = tempVert2_Count - 1;tempNormal2[tempNormal2_Count++] = (normal);for (int i = 0; i < allPos_Count; i += 2){//排除相同顶点的情况，只要有三角面2点位置相同，那就无法构成三角面 忽略...(不然会出问题)if (allPos[i] == allPos[i + 1] || allPos[i] == center || center == allPos[i + 1]){continue;}tempVert1[tempVert1_Count++] = (allPos[i]);int tempVert1AllPos1Index = tempVert1_Count - 1;tempVert1[tempVert1_Count++] = (allPos[i + 1]);int tempVert1AllPos2Index = tempVert1_Count - 1;tempNormal1[tempNormal1_Count++] = (-normal);tempNormal1[tempNormal1_Count++] = (-normal);Vector3 a1 = allPos[i] - center;//Vector3 a2 = allPos[i + 1] - allPos[i];Vector3 a2 = allPos[i + 1] - center;Vector3 crossA1A2 = Vector3.Cross(a1, a2);if (Vector3.Dot(-normal, crossA1A2) >= 0){tempTriangles1[tempTriangles1_Count++] = (center1Index);tempTriangles1[tempTriangles1_Count++] = (tempVert1AllPos1Index);tempTriangles1[tempTriangles1_Count++] = (tempVert1AllPos2Index);if (center1Index == tempVert1AllPos1Index || center1Index == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index){//Debug.Log(//     center + "," + allPos[i] + "," + allPos[i + 1]//     + "\n " + tempVert1.IndexOf(center) + "," + tempVert1AllPos1Index + "," + tempVert1AllPos2Index + "," + allPos_Count);//Debug.LogError("tempVert1.LastIndexOf(center) == tempVert1AllPos1Index || tempVert1.LastIndexOf(center) == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index 9999999999");}}else{tempTriangles1[tempTriangles1_Count++] = (tempVert1AllPos2Index);tempTriangles1[tempTriangles1_Count++] = (tempVert1AllPos1Index);tempTriangles1[tempTriangles1_Count++] = (center1Index);if (center1Index == tempVert1AllPos1Index || center1Index == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index){//Debug.Log(//    center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +//    tempVert1.IndexOf(center) + "," + tempVert1AllPos1Index + "," + tempVert1AllPos2Index + "," + allPos_Count);//Debug.LogError("if (tempVert1.LastIndexOf(center) == tempVert1AllPos1Index || tempVert1.LastIndexOf(center) == tempVert1AllPos2Index || tempVert1AllPos1Index == tempVert1AllPos2Index) -----------");}}tempVert2[tempVert2_Count++] = (allPos[i]);int tempV1Index = tempVert2_Count - 1;tempVert2[tempVert2_Count++] = (allPos[i + 1]);int tempV2Index = tempVert2_Count - 1;tempNormal2[tempNormal2_Count++] = (normal);tempNormal2[tempNormal2_Count++] = (normal);if (Vector3.Dot(normal, crossA1A2) >= 0){tempTriangles2[tempTriangles2_Count++] = (center2Index);tempTriangles2[tempTriangles2_Count++] = (tempV1Index);tempTriangles2[tempTriangles2_Count++] = (tempV2Index);if (center2Index == tempV1Index || center2Index == tempV2Index || tempV1Index == tempV2Index){//Debug.Log(//    center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +//    tempVert2.IndexOf(center) + "," + tempV1Index + "," + tempV2Index + "," + allPos_Count);//Debug.LogError("tempVert2.LastIndexOf(center) == tempV1Index || tempVert2.LastIndexOf(center) == tempV2Index || tempV1Index == tempV2Index /");}}else{tempTriangles2[tempTriangles2_Count++] = (tempV2Index);tempTriangles2[tempTriangles2_Count++] = (tempV1Index);tempTriangles2[tempTriangles2_Count++] = (center2Index);if (center2Index == tempV1Index || center2Index == tempV2Index || tempV1Index == tempV2Index){//Debug.Log(//    center + "," + allPos[i] + "," + allPos[i + 1] + "\n" +//    tempVert2.IndexOf(center) + "," + tempV1Index + "," + tempV2Index + "," + allPos_Count);//Debug.LogError("tempVert2.LastIndexOf(center) == tempV1Index || tempVert2.LastIndexOf(center) == tempV2Index || tempV1Index == tempV2Index qqqqqqq");}}}}/// <summary>/// 计算Box的UV方法 /// </summary>void CalculateUV(Vector3 size, ref NativeArray<Vector3> vertices, ref NativeArray<int> triangles, ref NativeArray<Vector3> normals, ref NativeArray<Vector2> uvs, ref int verticesCount, ref int trianglesCount, ref int normalsCount, ref int uvsCount){for (int i = 0; i < verticesCount; i++){uvs[uvsCount++] = (new Vector2(0, 0));}for (int i = 0; i < trianglesCount / 3; i++){int i0 = triangles[i * 3];int i1 = triangles[i * 3 + 1];int i2 = triangles[i * 3 + 2];//Vector3 v0 = vertices[i0] - center + size / 2f;//Vector3 v1 = vertices[i1] - center + size / 2f;//Vector3 v2 = vertices[i2] - center + size / 2f;Vector3 v0 = vertices[i0];Vector3 v1 = vertices[i1];Vector3 v2 = vertices[i2];//string str = string.Format("原始数据:({0},{1},{2}) index:({3},{4},{5})", v0.ToString(), v1.ToString(), v2.ToString(), i0, i1, i2);// 除以size.x,y,z是为了缩小范围到[0,1] UV的范围v0 = new Vector3(v0.x / size.x, v0.y / size.y, v0.z / size.z);v1 = new Vector3(v1.x / size.x, v1.y / size.y, v1.z / size.z);v2 = new Vector3(v2.x / size.x, v2.y / size.y, v2.z / size.z);//Vector3 a = v0 - v1;//Vector3 b = v2 - v1; Vector3 a = v1 - v0;Vector3 b = v2 - v1;//我老感觉这法线计算错了...v0->v1-v2             Vector3 dir = normals[i0]; //Vector3.Cross(a, b);  //改用顶点法线作为法线float x = Mathf.Abs(Vector3.Dot(dir, Vector3.right));float y = Mathf.Abs(Vector3.Dot(dir, Vector3.up));float z = Mathf.Abs(Vector3.Dot(dir, Vector3.forward));//法线倾向于X轴，用Z作为X，Y作为Yif (x > y && x > z){uvs[i0] = new Vector2(v0.z, v0.y);uvs[i1] = new Vector2(v1.z, v1.y);uvs[i2] = new Vector2(v2.z, v2.y);}else if (y > z && y > x){//法线倾向于Y轴，用X作为X，Z作为Yuvs[i0] = new Vector2(v0.x, v0.z);uvs[i1] = new Vector2(v1.x, v1.z);uvs[i2] = new Vector2(v2.x, v2.z);}else if (z > x && z > y){//法线倾向于Z轴，用X作为X，Y作为Yuvs[i0] = new Vector2(v0.x, v0.y);uvs[i1] = new Vector2(v1.x, v1.y);uvs[i2] = new Vector2(v2.x, v2.y);}else{//防止出现UV不正常情况uvs[i0] = new Vector2(0, 0);uvs[i1] = new Vector2(1, 1);uvs[i2] = new Vector2(0, 0);//Debug.LogWarning("UV出问题啦..." + x + ", " + y + "," + z + "\n"//    + v0 + ", " + v1 + "," + v2 + " \n"//    + a + ", " + b + "\n"//    + dir + "\n"//    + str);//虽然已经处理了异常三角面，但仍然会出现(x,y,z)全为0的情况...先放任不管看看效果...}}}#endregion
}