CGAL 6.0.2 - Linear Cell Complex

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Linear_cell_complex/linear_cell_complex_3_incremental_builder.cpp
#include <CGAL/Linear_cell_complex_for_combinatorial_map.h>
#include <CGAL/Linear_cell_complex_incremental_builder_3.h>
#include <CGAL/draw_linear_cell_complex.h>
typedef CGAL::Linear_cell_complex_for_combinatorial_map<3, 3> LCC_3;
using Point=LCC_3::Point;
int main()
{
LCC_3 lcc;
CGAL::Linear_cell_complex_incremental_builder_3<LCC_3> ib(lcc);
ib.add_vertex(Point(0,0,0)); // vertex 0
ib.add_vertex(Point(1,0,0)); // vertex 1
ib.add_vertex(Point(1,1,0)); // vertex 2
ib.add_vertex(Point(0,1,0)); // vertex 3
ib.add_vertex(Point(0,1,1)); // vertex 4
ib.add_vertex(Point(0,0,1)); // vertex 5
ib.add_vertex(Point(1,0,1)); // vertex 6
ib.add_vertex(Point(1,1,1)); // vertex 7
// Create a cube
ib.begin_surface();
ib.add_facet({0,1,2,3}); // Create a new facet version 1: given all of its indices
ib.add_facet({1,0,5,6});
ib.add_facet({2,1,6,7});
ib.add_facet({3,2,7,4});
ib.add_facet({5,4,7,6});
ib.begin_facet(); // Create a new facet version 2: begin facet
ib.add_vertex_to_facet(0); // add successively its indices
ib.add_vertex_to_facet(3);
ib.add_vertex_to_facet(4);
ib.add_vertex_to_facet(5);
ib.end_facet();
ib.end_surface();
ib.add_vertex(Point(-1, 0.5, 0.5)); // vertex 8
// Create a pyramid, sharing one of its facets with a facet of the cube
ib.begin_surface();
ib.add_facet({3,0,5,4});
ib.add_facet({0,3,8});
ib.add_facet({3,4,8});
ib.add_facet({4,5,8});
ib.add_facet({5,0,8});
ib.end_surface();
LCC_3::One_dart_per_cell_range<3,3> cells = lcc.one_dart_per_cell<3>();
for (auto c = cells.begin(); c != cells.end(); ++c) {
std::cout << "a cell"<< std::endl;
LCC_3::One_dart_per_incident_cell_range<2,3> faces = lcc.one_dart_per_incident_cell<2,3>(c);
for (auto f = faces.begin(); f != faces.end(); ++f) {
std::cout << " a face"<< std::endl;
LCC_3::One_dart_per_incident_cell_range<0,2> vertices = lcc.one_dart_per_incident_cell<0,2>(f);
for(auto v = vertices.begin(); v!= vertices.end(); ++v){
std::cout << " " << lcc.point(v) << std::endl;
}
}
}
// Draw the lcc and display its characteristics
lcc.display_characteristics(std::cout)<<std::endl;
CGAL::draw(lcc);
return EXIT_SUCCESS;
}
CGAL::Linear_cell_complex_for_combinatorial_map
The class Linear_cell_complex_for_combinatorial_map represents a linear cell complex in dimension d,...
Definition: Linear_cell_complex_for_combinatorial_map.h:29
CGAL::Linear_cell_complex_incremental_builder_3
The auxiliary class Linear_cell_complex_incremental_builder_3 supports the incremental construction o...
Definition: Linear_cell_complex_incremental_builder_3.h:15
CGAL::Linear_cell_complex_incremental_builder_3::begin_surface
void begin_surface()
starts a new surface.
CGAL::Linear_cell_complex_incremental_builder_3::add_facet
DH add_facet(std::initializer_list< size_type > l)
is a synonym for begin_facet(), a call to add_vertex_to_facet() for each value in the range [first,...
CGAL::Linear_cell_complex_incremental_builder_3::end_surface
DH end_surface()
ends the construction of the surface and returns one dart of the created surface.
CGAL::Linear_cell_complex_incremental_builder_3::add_vertex_to_facet
void add_vertex_to_facet(size_type i)
adds vertex i at the end of the current facet.
CGAL::Linear_cell_complex_incremental_builder_3::begin_facet
void begin_facet()
starts a new facet.
CGAL::Linear_cell_complex_incremental_builder_3::end_facet
DH end_facet()
ends the construction of the facet and returns the first dart of this facet.
CGAL::Linear_cell_complex_incremental_builder_3::add_vertex
VAH add_vertex(const Point_3 &p)
adds a new vertex for p and returns its handle.
CGAL::draw
void draw(const P &p, const GSOptions &gso)