简介
生成一个平面矩形网格。
代码
// CreateGrid.cpp: 定义控制台应用程序的入口点。
////#include "stdafx.h"
#include <iostream>
#include <OpenMesh/Core/IO/MeshIO.hh>
#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
#include<cmath>
using namespace std;
typedef OpenMesh::TriMesh_ArrayKernelT<> MyMesh;int main()
{MyMesh mesh;int m, n;cout << "please input long and width!\n";cin >> m >> n;double length = 1.0;MyMesh::VertexHandle **vhandle = new MyMesh::VertexHandle*[m];for (int i = 0;i < m;i++) {vhandle[i] = new MyMesh::VertexHandle[n];//二维数组句柄}std::vector<MyMesh::VertexHandle>face_vhandles;double x = -m* length/2;double y = -n* length/2;for (int i = 0; i < m; i++) {for (int j = 0; j < n; j++) {vhandle[i][j] = mesh.add_vertex(MyMesh::Point(x + i * length, y + j * length, 0));}}for (int i = 0; i < m - 1; i++) {for (int j = 0; j < n - 1; j++) {face_vhandles.clear();face_vhandles.push_back(vhandle[i+1][j]);//加入两个面face_vhandles.push_back(vhandle[i][j+1]);face_vhandles.push_back(vhandle[i][j]);mesh.add_face(face_vhandles);face_vhandles.clear();face_vhandles.push_back(vhandle[i + 1][j]);face_vhandles.push_back(vhandle[i + 1][j + 1]);face_vhandles.push_back(vhandle[i][j + 1]);mesh.add_face(face_vhandles);}}// write mesh to output.objtry{if (!OpenMesh::IO::write_mesh(mesh, "output8.off")){std::cerr << "Cannot write mesh to file 'output8.off'" << std::endl;return 1;}}catch (std::exception& x){std::cerr << x.what() << std::endl;return 1;}return 0;
}
)
