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#include <gmsh.h>
int main(int argc, char **argv)
{
gmsh::initialize(argc, argv);
gmsh::model::add("test");
// add discrete surface with tag 1
gmsh::model::addDiscreteEntity(2, 1);
// add 4 mesh nodes
gmsh::model::mesh::addNodes(2, 1, {1, 2, 3, 4}, // node tags: 1, 2, 3, and 4
{0., 0., 0., // coordinates of node 1
1., 0., 0., // coordinates of node 2
1., 1., 0., // ...
0., 1., 0.});
// add 2 triangles
gmsh::model::mesh::addElements(2, 1, {2}, // single type : 3-node triangle
{{1, 2}}, // triangle tags: 1 and 2
{{1, 2, 3, // triangle 1: nodes 1, 2, 3
1, 3, 4}}); // triangle 2: nodes 1, 3, 4
// export the mesh ; use explore.cpp to read and examine the mesh
gmsh::write("test.msh");
gmsh::finalize();
return 0;
}
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