【m】11.PointCloudTools 上传

2025-09-02 10:42:11 +08:00
parent 421b516485
commit 66443003d1
31 changed files with 1578 additions and 0 deletions
--- a/Assets/11.PointCloudTools/Runtime/Script/PointSystem/Gizmo/MeshColliderGizmo.cs
+++ b/Assets/11.PointCloudTools/Runtime/Script/PointSystem/Gizmo/MeshColliderGizmo.cs
@@ -0,0 +1,151 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+[RequireComponent(typeof(MeshCollider))]
+public class MeshColliderGizmo : MonoBehaviour
+{
+    [Tooltip("Gizmo显示颜色")]
+    public Color lineColor = new Color(0, 1, 1, 0.8f);
+    
+    [Tooltip("线框宽度")]
+    public float lineWidth = 1.0f;
+    
+    [Tooltip("是否在运行时显示")]
+    public bool showInPlayMode = true;
+    
+    [Tooltip("是否只显示边缘")]
+    public bool showEdgesOnly = true;
+    
+    private MeshCollider _meshCollider;
+    private Mesh _mesh;
+    private List<Vector3> _vertices = new List<Vector3>();
+    private List<int> _triangles = new List<int>();
+    private List<Vector3> _linePoints = new List<Vector3>();
+    private Material _glMaterial;
+    private Matrix4x4 _localToWorldMatrix;
+
+    private void Awake()
+    {
+        _meshCollider = GetComponent<MeshCollider>();
+        InitializeMeshData();
+        InitializeGLMaterial();
+    }
+
+    private void InitializeMeshData()
+    {
+        // 尝试获取网格数据
+        MeshFilter meshFilter = GetComponent<MeshFilter>();
+        if (meshFilter != null && meshFilter.sharedMesh != null)
+        {
+            _mesh = meshFilter.sharedMesh;
+        }
+        else if (_meshCollider.sharedMesh != null)
+        {
+            _mesh = _meshCollider.sharedMesh;
+        }
+        
+        if (_mesh != null)
+        {
+            _vertices.Clear();
+            _triangles.Clear();
+            _mesh.GetVertices(_vertices);
+            _mesh.GetTriangles(_triangles, 0);
+            GenerateLinePoints();
+        }
+        else
+        {
+            Debug.LogWarning("未找到有效的Mesh资源", this);
+        }
+    }
+
+    private void InitializeGLMaterial()
+    {
+        // 创建用于GL绘制的材质
+        _glMaterial = new Material(Shader.Find("Hidden/Internal-Colored"));
+        _glMaterial.hideFlags = HideFlags.HideAndDontSave;
+        _glMaterial.SetInt("ZWrite", 0);
+        _glMaterial.SetInt("ZTest", (int)UnityEngine.Rendering.CompareFunction.Always);
+    }
+
+    private void GenerateLinePoints()
+    {
+        if (showEdgesOnly)
+        {
+            // 只显示边缘线（去重处理）
+            HashSet<long> edgeSet = new HashSet<long>();
+            _linePoints.Clear();
+
+            for (int i = 0; i < _triangles.Count; i += 3)
+            {
+                AddEdge(_triangles[i], _triangles[i + 1], edgeSet);
+                AddEdge(_triangles[i + 1], _triangles[i + 2], edgeSet);
+                AddEdge(_triangles[i + 2], _triangles[i], edgeSet);
+            }
+        }
+        else
+        {
+            // 显示所有三角形线
+            _linePoints.Clear();
+            for (int i = 0; i < _triangles.Count; i += 3)
+            {
+                _linePoints.Add(_vertices[_triangles[i]]);
+                _linePoints.Add(_vertices[_triangles[i + 1]]);
+                _linePoints.Add(_vertices[_triangles[i + 1]]);
+                _linePoints.Add(_vertices[_triangles[i + 2]]);
+                _linePoints.Add(_vertices[_triangles[i + 2]]);
+                _linePoints.Add(_vertices[_triangles[i]]);
+            }
+        }
+    }
+
+    private void AddEdge(int v1, int v2, HashSet<long> edgeSet)
+    {
+        // 创建唯一的边ID，避免重复
+        long edgeId = (long)Mathf.Min(v1, v2) << 32 | Mathf.Max(v1, v2);
+        if (edgeSet.Contains(edgeId)) return;
+
+        edgeSet.Add(edgeId);
+        _linePoints.Add(_vertices[v1]);
+        _linePoints.Add(_vertices[v2]);
+    }
+
+    private void Update()
+    {
+        _localToWorldMatrix = transform.localToWorldMatrix;
+    }
+
+    private void OnRenderObject()
+    {
+        if (!showInPlayMode || _mesh == null || _linePoints.Count == 0 || _glMaterial == null)
+            return;
+
+        // 设置材质和颜色
+        _glMaterial.SetPass(0);
+        GL.PushMatrix();
+        GL.MultMatrix(_localToWorldMatrix);
+        GL.Color(lineColor);
+
+        // 设置线宽
+        GL.Begin(GL.LINES);
+        for (int i = 0; i < _linePoints.Count; i++)
+        {
+            GL.Vertex(_linePoints[i]);
+        }
+        GL.End();
+
+        GL.PopMatrix();
+    }
+
+    // 编辑器下的Gizmo预览
+#if UNITY_EDITOR
+    private void OnDrawGizmos()
+    {
+        if (!Application.isPlaying && _mesh != null)
+        {
+            Gizmos.color = lineColor;
+            Gizmos.matrix = transform.localToWorldMatrix;
+            Gizmos.DrawWireMesh(_mesh);
+        }
+    }
+#endif
+}