songsenand
/
cgal
mirror of https://github.com/CGAL/cgal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add an example to explicit the behaviour of add_face in case of a wrong orientation.

This commit is contained in:
Maxime Gimeno 2019-09-02 16:06:43 +02:00
parent 3e3d8d1b9a
commit 7259e3d1e2
2 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Surface_mesh/examples/Surface_mesh/CMakeLists.txt
View File

@ -39,6 +39,7 @@ if ( CGAL_FOUND )
create_single_source_cgal_program("draw_surface_mesh.cpp")
create_single_source_cgal_program("sm_draw_small_faces.cpp")
create_single_source_cgal_program("sm_check_wrong_orientation.cpp")
if(CGAL_Qt5_FOUND )
target_link_libraries(draw_surface_mesh PUBLIC CGAL::CGAL_Qt5)
target_link_libraries(sm_draw_small_faces PUBLIC CGAL::CGAL_Qt5)

30
Surface_mesh/examples/Surface_mesh/sm_check_wrong_orientation.cpp Normal file
View File

@ -0,0 +1,30 @@
#include <vector>
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
typedef CGAL::Simple_cartesian<double> K;
typedef CGAL::Surface_mesh<K::Point_3> Mesh;
typedef Mesh::Vertex_index vertex_descriptor;
typedef Mesh::Face_index face_descriptor;
int main()
{
Mesh m;
// Add the points as vertices
vertex_descriptor u = m.add_vertex(K::Point_3(0,1,0));
vertex_descriptor v = m.add_vertex(K::Point_3(0,0,0));
vertex_descriptor w = m.add_vertex(K::Point_3(1,1,0));
vertex_descriptor x = m.add_vertex(K::Point_3(1,0,0));
m.add_face(u,v,w);
face_descriptor f = m.add_face(u,v,x);
if(f == Mesh::null_face())
{
std::cerr<<"The face could not be added because of an orientation error."<<std::endl;
f = m.add_face(u,x,v);
assert(f != Mesh::null_face());
}
return 0;
}