72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
#include "delaunay.h"
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#include "iostream"
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#include "fstream"
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#include "iomanip"
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int main(int argc, char const *argv[])
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{
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std::vector<vertex2dc> points(21);
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points[0].set(-0.8, -0.8, 0);
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points[1].set(0.4, -1.2, 1);
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points[2].set(1.2, -0.9, 2);
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points[3].set(1.6, 0.1, 3);
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points[4].set(2.5, 0.5, 4);
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points[5].set(4.1, 0.7, 5);
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points[6].set(5.7, 1.8, 6);
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points[7].set(5.1, 3.4, 7);
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points[8].set(2.5, 4.4, 8);
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points[9].set(1.2, 3.7, 9);
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points[10].set(-1.2, 3.9, 10);
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points[11].set(-3.2, 5.1, 11);
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points[12].set(-4.3, 2.9, 12);
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points[13].set(-3.1, 0.7, 13);
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points[14].set(-1.3, 0.6, 14);
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points[15].set(-2.1, 2.9, 15);
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points[16].set(0.6, 1.2, 16);
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points[17].set(0.1, 2.4, 17);
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points[18].set(2.4, 2.8, 18);
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points[19].set(3.5, 1.8, 19);
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points[20].set(3.6, 3.1, 20);
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if (duplicated_vertex(points))
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{
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std::cerr << "Duplicated vertexes detected.\n";
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return 0;
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}
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std::vector<triangle> elements;
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triangulation(points, elements);
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if (fully_delaunay(elements, points))
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{
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std::clog << "The triangulation is fully delaunay.\n";
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}
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else std::clog << "The triangulation is not fully delaunay\n";
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// Write a Gmsh's .msh file
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std::ofstream outfile("demo.msh");
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outfile << "$MeshFormat" << std::endl << "2.2 0 8" << std::endl << "$EndMeshFormat "<<std::endl;
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outfile << "$Nodes" << std::endl << points.size() << std::endl;
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for (int i = 0; i < points.size(); i++)
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{
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outfile << points[i].id + 1 << " " << std::setprecision(16)
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<< points[i].x << " " << points[i].y << " 0.0" << std::endl;
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}
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outfile<<"$EndNodes"<<std::endl;
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outfile << "$Elements" << std::endl << elements.size() <<std::endl;
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for (int i = 0; i < elements.size(); i++)
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{
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outfile << i + 1 << " 2 0";
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for (int j = 0; j < 3; j++)
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{
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outfile << " " << elements[i].vert[j]->id + 1;
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}
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outfile << std::endl;
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}
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outfile << "$EndElements"<< std::endl;
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outfile.close();
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return 0;
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}
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