3D模型文件的导入导出

3D模型文件的导入导出

由多边形构成的3D模型文件的导入导出库，可以对应的类型如下。

• OBJ文件导入导出
• DXF文件导入导出(仅限3DFACE entities)
• VRML文件导入导出(仅限IndexedFaceSet)
• 3DS文件导入导出
• STL文件导入导出
• OFF文件导入导出

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下载

源文件下载如下（一直在用的研究室的库，个人没做更改）。

rx_model_v0.52.zip

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使用例 

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#include "rx_model.h" /*! * 读取OBJ文件 * @param[in] 传递filename obj文件 * @param[inout] poly 3D物体 * @param[in] cen,ext 导入3D形状的正规化参数 */ void ReadOBJ(const string filename, rxPolygons &polys, Vec3 cen, Vec3 ext) { if(!polys.vertices.empty()){ polys.vertices.clear(); polys.normals.clear(); polys.faces.clear(); polys.materials.clear(); polys.open = 0; } rxOBJ obj; if(obj.Read(filename, polys.vertices, polys.normals, polys.faces, polys.materials, true)){ cout << filename << " have been read." << endl; if(polys.normals.empty()){ CalVertexNormals(polys); } cout << " the number of vertex : " << polys.vertices.size() << endl; cout << " the number of normal : " << polys.normals.size() << endl; cout << " the number of polygon : " << polys.faces.size() << endl; cout << " the number of material : " << polys.materials.size() << endl; FitVertices(cen, ext, polys.vertices); // 读取贴图 if(!polys.materials.empty()){ rxMTL::iterator iter = polys.materials.begin(); for(; iter != polys.materials.end(); ++iter){ if(iter->second.tex_file.empty()) continue; cout << iter->first << " : " << iter->second.tex_file; LoadGLTexture(iter->second.tex_file, iter->second.tex_name, true, false); cout << " : " << iter->second.tex_name << endl; } } polys.open = 1; } } /*! * 导出OBJ文件 * @param[in] 传递给filename obj文件 * @param[inout] poly 3D物体 */ void SaveOBJ(const string filename, rxPolygons &polys) { rxOBJ obj; if(obj.Save(filename, polys.vertices, polys.normals, polys.faces, polys.materials)){ cout << filename << " have been saved." << endl; } }