生成一个Cylinder

简介

用到了上一个博客的，AddPolygon。
生成的是一个筒状物体。

代码

// CreateCylinder.cpp: 定义控制台应用程序的入口点。
////#include "stdafx.h"
#include <iostream>
#include "AddPolygon.h"
#include <OpenMesh/Core/IO/MeshIO.hh>
#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>
#include<cmath>MyMesh* CreateCylinder(int edge, double height) {MyMesh * cylinder = new MyMesh;MyMesh::VertexHandle * top = AddPolygon(*cylinder, edge, height / 2, true);MyMesh::VertexHandle * bottom = AddPolygon(*cylinder, edge, -height / 2, false);for (int i = 0; i < edge; i++) {int next = (i + 1) % edge;std::vector<MyMesh::VertexHandle>face_vhandles;face_vhandles.push_back(bottom[i]);face_vhandles.push_back(top[next]);face_vhandles.push_back(top[i]);(*cylinder).add_face(face_vhandles);face_vhandles.clear();face_vhandles.push_back(bottom[i]);face_vhandles.push_back(bottom[next]);face_vhandles.push_back(top[next]);(*cylinder).add_face(face_vhandles);}return cylinder;
}int main()
{cout << "Please input edge(int) height(double): \n";int edge;double height;cin >> edge >> height;MyMesh * mesh = CreateCylinder(edge, height);try{if (!OpenMesh::IO::write_mesh(*mesh, "output4 .off")) {std::cerr << "Cannot write mesh to file ' output4 .off ' " << std::endl;return 1;}}catch (std::exception&x) {std::cerr << x.what() << std::endl;return 1;}return 0;
}