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49 lines
1.2 KiB
49 lines
1.2 KiB
1 year ago
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#include <igl/opengl/glfw/Viewer.h>
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#include <igl/triangle/triangulate.h>
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// Input polygon
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Eigen::MatrixXd V;
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Eigen::MatrixXi E;
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Eigen::MatrixXd H;
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// Triangulated interior
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Eigen::MatrixXd V2;
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Eigen::MatrixXi F2;
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int main(int argc, char *argv[])
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{
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using namespace Eigen;
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using namespace std;
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// Create the boundary of a square
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V.resize(8,2);
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E.resize(8,2);
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H.resize(1,2);
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// create two squares, one with edge length of 4,
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// one with edge length of 2
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// both centered at origin
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V << -1,-1, 1,-1, 1,1, -1, 1,
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-2,-2, 2,-2, 2,2, -2, 2;
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// add the edges of the squares
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E << 0,1, 1,2, 2,3, 3,0,
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4,5, 5,6, 6,7, 7,4;
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// specify a point that is inside a closed shape
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// where we do not want triangulation to happen
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H << 0,0;
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// Triangulate the interior
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// a0.005 means that the area of each triangle should
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// not be greater than 0.005
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// q means that no angles will be smaller than 20 degrees
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// for a detailed set of commands please refer to:
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// https://www.cs.cmu.edu/~quake/triangle.switch.html
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igl::triangle::triangulate(V,E,H,"a0.005q",V2,F2);
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// Plot the generated mesh
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igl::opengl::glfw::Viewer viewer;
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viewer.data().set_mesh(V2,F2);
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viewer.launch();
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}
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