s

2024-11-25 18:32:05 +08:00
parent 72d1f89b54
commit 84243e75a8
353 changed files with 17666 additions and 3206 deletions
@@ -0,0 +1,107 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Unity.Burst;
+using Unity.Collections;
+using Unity.Jobs;
+using UnityEngine;
+
+/// <summary>
+/// 三角形合并网格
+/// </summary>
+public class UnitAlgorithmMergeTriangle : UnitAlgorithm<DataPlate> {
+    /// <summary> 三角形合并网格 </summary>
+    public UnitAlgorithmMergeTriangle() { }
+
+    public void Compute(DataPlate data) {
+        List<DataTriangle> polygons = data.triangles;
+        //三角形合并
+        List<Vector3> vertices = vertices = MergeVertices(polygons);
+        List<int> triangles = JobFindTriangleIndex(polygons, vertices);
+        //展开uv (顶点去掉z坐标就是未缩放的平面UV)
+        List<Vector2> uv = new List<Vector2>();
+        for (int i = 0; i < vertices.Count; i++) { uv.Add(vertices[i]); }
+        //附加数据
+        data.designMesh = new Mesh();
+        data.designMesh.vertices = vertices.ToArray();
+        data.designMesh.uv = uv.ToArray();
+        data.designMesh.triangles = triangles.ToArray();
+        data.designMesh.RecalculateBounds();
+        data.designMesh.RecalculateNormals();
+    }
+    /// <summary> 合并顶点 </summary>
+    private List<Vector3> MergeVertices(List<DataTriangle> polygons) {
+        List<Vector3> vertices = new List<Vector3>();
+        for (int i = 0; i < polygons.Count; i++) {
+            vertices.Add(polygons[i].a);
+            vertices.Add(polygons[i].b);
+            vertices.Add(polygons[i].c);
+        }
+        return vertices.Distinct().ToList();
+    }
+
+    #region Jobs
+    /// <summary> 三角形顶点索引查找作业 </summary>
+    private List<int> JobFindTriangleIndex(List<DataTriangle> polygons, List<Vector3> vertices) {
+        NativeArray<DataTriangle> dataArray = new NativeArray<DataTriangle>(polygons.ToArray(), Allocator.TempJob);
+        NativeArray<Vector3> verticeArray = new NativeArray<Vector3>(vertices.ToArray(), Allocator.TempJob);
+        NativeArray<Triangle> trianglesArray = new NativeArray<Triangle>(polygons.Count, Allocator.TempJob);
+
+        TriangleIndex triangleIndex = new TriangleIndex();
+        triangleIndex.dataArray = dataArray;
+        triangleIndex.vertices = verticeArray;
+        triangleIndex.triangles = trianglesArray;
+
+        JobHandle dependency = new JobHandle();
+        JobHandle handle = triangleIndex.ScheduleParallel(polygons.Count, 2048, dependency);
+        handle.Complete();
+
+        List<int> triangles = new List<int>();
+        for (int i = 0; i < trianglesArray.Length; i++) {
+            triangles.Add(trianglesArray[i].a);
+            triangles.Add(trianglesArray[i].b);
+            triangles.Add(trianglesArray[i].c);
+        }
+
+        dataArray.Dispose();
+        verticeArray.Dispose();
+        trianglesArray.Dispose();
+        return triangles;
+    }
+    /// <summary> 三角形顶点索引查找作业 </summary>
+    [BurstCompile]
+    public struct TriangleIndex : IJobFor {
+        [ReadOnly] public NativeArray<DataTriangle> dataArray;
+        [ReadOnly] public NativeArray<Vector3> vertices;
+        public NativeArray<Triangle> triangles;
+
+        public void Execute(int index) {
+            DataTriangle dataTriangle = dataArray[index];
+            Triangle triangle = new Triangle();
+            bool a = false, b = false, c = false;
+            for (int i = 0; i < vertices.Length; i++) {
+                Vector3 vector = vertices[i];
+                if (dataTriangle.a == vector) { triangle.a = i; a = true; }
+                if (dataTriangle.b == vector) { triangle.b = i; b = true; }
+                if (dataTriangle.c == vector) { triangle.c = i; c = true; }
+                if (a && b && c) { break; }
+            }
+            triangles[index] = triangle;
+        }
+    }
+    /// <summary> 三角形顶点索引 </summary>
+    public struct Triangle { public int a, b, c; }
+    #endregion
+
+    /// <summary> 是否启用计时器 </summary>
+    private readonly bool isEnableTimer = true;
+    /// <summary> 计时器 </summary>
+    private void Chronoscope(string content, Action action) {
+        if (!isEnableTimer) { action?.Invoke(); return; }
+        float time = Time.realtimeSinceStartup;
+        action?.Invoke();
+        float consumed = Time.realtimeSinceStartup - time;
+        Debug.Log($"{content}{consumed * 1000}");
+    }
+}