优化三角形提取性能 - 实现批量COM Selection创建
问题分析： - 当前逐个ModelItem创建COM Selection（290次） - 从290个模型项提取776140个三角形耗时较长 - COM对象创建/销毁开销大 优化方案： 1. 新增 GeometryHelper.ExtractTrianglesBatch 方法 - 批量创建COM Selection（290次 → 1次） - 一次性提取所有模型项的三角形 - 添加进度日志（每100个片段输出一次） 2. 修改 NavisworksToDMesh3Converter.ConvertFromModelItems - 从逐个调用 ExtractTriangles 改为批量调用 ExtractTrianglesBatch - 添加详细的耗时统计（毫秒和秒） - 添加 System.Linq 引用支持ToList() 3. 保留原有 ExtractTriangles 方法 - 向后兼容单个模型项提取场景 - 用于小规模提取或特殊场景 预期效果： - COM Selection创建：290次 → 1次 - 预计性能提升：50-70% - 日志更详细，便于性能分析 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@ -124,7 +124,104 @@ namespace NavisworksTransport
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}
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/// <summary>
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/// 提取三角形
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/// 批量提取三角形（优化版本）
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/// </summary>
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/// <param name="modelItems">模型项集合</param>
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/// <returns>三角形集合</returns>
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public static List<Triangle3D> ExtractTrianglesBatch(IEnumerable<ModelItem> modelItems)
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{
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var triangles = new List<Triangle3D>();
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ComApi.InwOpSelection comSelection = null;
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try
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{
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// 批量转换为 COM 选择 - 性能优化关键
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var modelCollection = new ModelItemCollection();
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int itemCount = 0;
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foreach (var item in modelItems)
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{
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modelCollection.Add(item);
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itemCount++;
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}
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LogManager.Info($"[批量提取] 开始批量提取 {itemCount} 个模型项的三角形");
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var comState = ComStateManager.GetState();
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comSelection = ComApiBridge.ToInwOpSelection(modelCollection);
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LogManager.Debug($"[批量提取] COM 选择创建成功，路径数: {comSelection.Paths().Count}");
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// 获取所有片段
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var allFragments = GetAllFragments(comSelection);
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LogManager.Info($"[批量提取] 获取到 {allFragments.Count} 个片段");
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try
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{
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int processedFragments = 0;
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foreach (var fragmentInfo in allFragments)
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{
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try
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{
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var callback = new OptimizedGeometryCallback(fragmentInfo.TransformMatrix);
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fragmentInfo.Fragment.GenerateSimplePrimitives(
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ComApi.nwEVertexProperty.eNORMAL,
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callback);
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var fragmentTriangles = callback.GetTriangles();
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triangles.AddRange(fragmentTriangles);
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processedFragments++;
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// 每处理100个片段输出一次进度
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if (processedFragments % 100 == 0)
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{
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LogManager.Debug($"[批量提取] 已处理 {processedFragments}/{allFragments.Count} 个片段，累计三角形: {triangles.Count}");
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}
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}
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catch (Exception ex)
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{
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LogManager.Error($"[批量提取] 处理片段失败: {ex.Message}");
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}
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}
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LogManager.Info($"[批量提取] 片段处理完成，共提取 {triangles.Count} 个三角形");
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}
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finally
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{
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// 释放所有片段COM对象
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foreach (var fragmentInfo in allFragments)
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{
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try
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{
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if (fragmentInfo.Fragment != null)
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{
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Marshal.ReleaseComObject(fragmentInfo.Fragment);
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}
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}
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catch (Exception ex)
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{
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LogManager.Warning($"[批量提取] 释放片段COM对象失败: {ex.Message}");
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}
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}
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}
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}
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catch (Exception ex)
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{
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LogManager.Error($"[批量提取] 提取三角形失败: {ex.Message}");
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}
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finally
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{
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// 释放COM对象，避免内存泄漏
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if (comSelection != null)
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{
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Marshal.ReleaseComObject(comSelection);
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}
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}
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return triangles;
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}
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/// <summary>
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/// 提取三角形（单个模型项）
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/// </summary>
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/// <param name="modelItem">模型项</param>
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/// <returns>三角形集合</returns>
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@ -146,7 +243,7 @@ namespace NavisworksTransport
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LogManager.Debug($"COM 选择创建成功，路径数: {comSelection.Paths().Count}");
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// 获取所有片段（已移除错误的去重逻辑）
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// 获取所有片段
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var allFragments = GetAllFragments(comSelection);
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LogManager.Debug($"获取到 {allFragments.Count} 个片段");
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@ -208,7 +305,7 @@ namespace NavisworksTransport
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}
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/// <summary>
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/// 获取所有片段（移除错误的去重逻辑）
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/// 获取所有片段
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/// </summary>
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/// <param name="selection">COM 选择</param>
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/// <returns>所有片段信息集合</returns>
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@ -1,5 +1,6 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Autodesk.Navisworks.Api;
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using NavisworksTransport.Utils;
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using g4;
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@ -138,33 +139,18 @@ namespace NavisworksTransport
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LogManager.Info("[DMesh3转换] 开始从 ModelItem 批量提取和转换");
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// 收集所有三角形
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var allTriangles = new List<Triangle3D>();
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int itemCount = 0;
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// 批量提取所有三角形 - 性能优化
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var extractStopwatch = System.Diagnostics.Stopwatch.StartNew();
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foreach (var item in items)
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{
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try
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{
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itemCount++;
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var triangles = GeometryHelper.ExtractTriangles(item);
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var itemsList = items.ToList();
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int itemCount = itemsList.Count;
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if (triangles != null && triangles.Count > 0)
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{
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allTriangles.AddRange(triangles);
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LogManager.Debug($"[DMesh3转换] 从 {item.DisplayName} 提取了 {triangles.Count} 个三角形");
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}
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}
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catch (Exception ex)
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{
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LogManager.Warning($"[DMesh3转换] 从 ModelItem {item.DisplayName} 提取几何体失败: {ex.Message}");
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}
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}
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LogManager.Info($"[DMesh3转换] 共 {itemCount} 个模型项，使用批量提取方式");
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var allTriangles = GeometryHelper.ExtractTrianglesBatch(itemsList);
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extractStopwatch.Stop();
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LogManager.Info($"[DMesh3转换] 从 {itemCount} 个模型项共提取 {allTriangles.Count} 个三角形，耗时: {extractStopwatch.ElapsedMilliseconds} ms");
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LogManager.Info($"[DMesh3转换] 从 {itemCount} 个模型项共提取 {allTriangles.Count} 个三角形，耗时: {extractStopwatch.ElapsedMilliseconds} ms ({extractStopwatch.Elapsed.TotalSeconds:F2}秒)");
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// 转换为 DMesh3
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return Convert(allTriangles);
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