openmesh绘制正方体网格

1.源码实现

#include <iostream>
#include <vector>
#include <stdexcept>
#include <OpenMesh/Core/IO/MeshIO.hh>
#include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh>

using namespace std;

typedef OpenMesh::PolyMesh_ArrayKernelT<> MyMesh;

int main()
{
        MyMesh mesh;
        MyMesh::VertexHandle vhandle[8];

        vhandle[0] = mesh.add_vertex(MyMesh::Point(-1, -1, 1));
        vhandle[1] = mesh.add_vertex(MyMesh::Point (1 , -1, 1));
        vhandle[2] = mesh.add_vertex(MyMesh::Point (1 , 1 , 1));
        vhandle[3] = mesh.add_vertex(MyMesh::Point(-1, 1 , 1));
        vhandle[4] = mesh.add_vertex(MyMesh::Point(-1, -1, -1));
        vhandle[5] = mesh.add_vertex(MyMesh::Point (1 , -1, -1));
        vhandle[6] = mesh.add_vertex(MyMesh::Point (1 , 1 , -1));
        vhandle[7] = mesh.add_vertex(MyMesh::Point(-1, 1 , -1));

        //生成(四边形)表面
        std::vector<MyMesh::VertexHandle> face_vhandles;

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[0]);
        face_vhandles.push_back(vhandle[1]);
        face_vhandles.push_back(vhandle[2]);
        face_vhandles.push_back(vhandle[3]);

        mesh.add_face(face_vhandles);

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[7]);
        face_vhandles.push_back(vhandle[6]);
        face_vhandles.push_back(vhandle[5]);
        face_vhandles.push_back(vhandle[4]);

        mesh.add_face(face_vhandles);

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[1]);
        face_vhandles.push_back(vhandle[0]);
        face_vhandles.push_back(vhandle[4]);
        face_vhandles.push_back(vhandle[5]);

        mesh.add_face(face_vhandles);

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[2]);
        face_vhandles.push_back(vhandle[1]);
        face_vhandles.push_back(vhandle[5]);
        face_vhandles.push_back(vhandle[6]);

        mesh.add_face(face_vhandles);

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[3]);
        face_vhandles.push_back(vhandle[2]);
        face_vhandles.push_back(vhandle[6]);
        face_vhandles.push_back(vhandle[7]);

        mesh.add_face(face_vhandles);

        face_vhandles.clear();

        face_vhandles.push_back(vhandle[0]);
        face_vhandles.push_back(vhandle[3]);
        face_vhandles.push_back(vhandle[7]);
        face_vhandles.push_back(vhandle[4]);

        mesh.add_face(face_vhandles);

        //导出output.obj格式文件
        try
        {
                if(!OpenMesh::IO::write_mesh(mesh, "output.obj"))
                {
                        std::cerr << "Cannot write mesh to file output.obj" << std::endl;

                        return 1;
                }
        }
        catch(std::exception &x)
        {
                std::cerr << x.what() << std::endl;

                return 1;
        }

        return 0;
}

2.编译源码

$ g++ -o test test.cpp -std=c++11 -lOpenMeshCore -Wl,-rpath=/usr/local/lib

3.运行程序

$ ./test

4.结果截图