C++ 从 AcDbSolid 中检索可能位于块中的顶点

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1. void CRmWindow::solid_meshing(AcDbEntity* entity, const AcGeMatrix3d& trans)
2. {
3. #if 0
4.         AcDbSolid* pSolid = AcDbSolid::cast(entity);
6.         double thickness = pSolid->thickness();
8.         AcGePoint3d vertices[4];
9.         int numVertices = 4;
10.         AcGeVector3d normal = pSolid->normal();
11.         double elevation = pSolid->elevation();
13.         for (int i = 0; i < 4; ++i)
14.                 pSolid->getPointAt(i, vertices[i]);
16.         if (vertices[2].isEqualTo(vertices[3]))
17.                 numVertices = 3;
19.         for (int i = 0; i < numVertices; ++i)
20.                 vertices[i].z += elevation;
21.        
22.         std::vector<AcGePoint3d> allVertices;
24.         for (int i = 0; i < numVertices; ++i) {
25.                 vertices[i].transformBy(trans);
26.                 allVertices.push_back(vertices[i]);
27.         }
29.         for (int i = 0; i < numVertices; ++i) {
30.                 AcGePoint3d extrudedVertex = vertices[i] + normal * thickness;
31.                 extrudedVertex.transformBy(trans);
32.                 allVertices.push_back(extrudedVertex);
33.         }
35.         std::ofstream file(path_from_mfc + L'\\' + mesh_file_str, std::ios::app);
36.         if (!file.is_open()) {
37.                 acutPrintf(L"Failed to open file for writing.\n");
38.                 return;
39.         }
41.         std::size_t numTotalVertices = allVertices.size();
42.         file << global_obj_mesh_counter << '\n' << numTotalVertices << "    " << 1 << '\n'; // Number of vertices and one solid
44.         for (const auto& vertex : allVertices) {
45.                 file << formatDouble(vertex.x) << '\n'
46.                         << formatDouble(vertex.y) << '\n'
47.                         << formatDouble(vertex.z) << '\n';
48.         }
49.         file.close();
50. #endif
51. }

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