C++ 从 AcDbSolid 中检索可能位于块中的顶点

admin

1. void CRmWindow::solid_meshing(AcDbEntity* entity, const AcGeMatrix3d& trans)
   
2. {
   
3. #if 0
   
4.         AcDbSolid* pSolid = AcDbSolid::cast(entity);
   
5. 
   
6.         double thickness = pSolid->thickness();
   
7. 
   
8.         AcGePoint3d vertices[4];
   
9.         int numVertices = 4;
   
10.         AcGeVector3d normal = pSolid->normal();
    
11.         double elevation = pSolid->elevation();
    
12. 
    
13.         for (int i = 0; i < 4; ++i)
    
14.                 pSolid->getPointAt(i, vertices[i]);
    
15. 
    
16.         if (vertices[2].isEqualTo(vertices[3]))
    
17.                 numVertices = 3;
    
18. 
    
19.         for (int i = 0; i < numVertices; ++i)
    
20.                 vertices[i].z += elevation;
    
21.        
    
22.         std::vector<AcGePoint3d> allVertices;
    
23. 
    
24.         for (int i = 0; i < numVertices; ++i) {
    
25.                 vertices[i].transformBy(trans);
    
26.                 allVertices.push_back(vertices[i]);
    
27.         }
    
28. 
    
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.         }
    
34. 
    
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.         }
    
40. 
    
41.         std::size_t numTotalVertices = allVertices.size();
    
42.         file << global_obj_mesh_counter << '\n' << numTotalVertices << "    " << 1 << '\n'; // Number of vertices and one solid
    
43. 
    
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. }

复制代码