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CGAL 6.1 - 3D Mesh Generation
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CGAL 6.1 - 3D Mesh Generation
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#include <CGAL/Polyhedral_complex_mesh_domain_3.h>
CGAL::Mesh_domain_with_polyline_features_3< MD >.
The class Polyhedral_complex_mesh_domain_3 implements a domain defined by a collection of polyhedral surfaces, forming a complex.
The constraints on the complex are:
It is a model of the concept MeshDomainWithFeatures_3. It also provides a member function to automatically detect sharp features and boundaries from the input polyhedral surface(s).
The union of the polyhedral surfaces is a non-manifold surface, called the 2D surface of the domain. It is locally manifold, with or without borders, but at the intersections of polyhedral surfaces.
The complement of the 2D surface is decomposed into:
If the domain has sub-domains, each one must be the union of one or many connected components of the complement of the 2D surface. The sub-domains have indices, of integral type Subdomain_index, and the exterior of the mesh domain is associated with the subdomain index 0, like for any mesh domain in CGAL.
Each polyhedral surface is oriented, and has two sides. The positive side is union of the positive side of all of its facets, usually named the "exterior" of the surface. The negative side is the other side. The use of Polyhedral_complex_mesh_domain_3 assumes that for each polyhedral surface, the sub-domain indices on both sides are known.
| Polyhedron | stands for the type of the input polyhedral surface(s), model of FaceListGraph. |
| IGT | stands for a geometric traits class providing the types and functors required to implement the intersection tests and intersection computations for polyhedral boundary surfaces. This parameter has to be instantiated with a model of the concept IntersectionGeometricTraits_3. |
MeshDomainWithFeatures_3 CGAL::make_mesh_3() CGAL::Mesh_domain_with_polyline_features_3<MD> CGAL::Polyhedral_mesh_domain_3<Polyhedron,IGT> CGAL::Mesh_polyhedron_3<IGT> Public Member Functions | |
| void | detect_features (FT angle_bound=FT(60)) |
| detects sharp features and boundaries of the polyhedral components of the complex (including potential internal polyhedra), and inserts them as features of the domain. | |
| void | detect_borders () |
| detects border edges of the polyhedral components of the complex, and inserts them as features of the domain. | |
 Public Member Functions inherited from CGAL::Mesh_domain_with_polyline_features_3< MD > | |
| template<typename ... T> | |
| Mesh_domain_with_polyline_features_3 (const T &...o) | |
| Mesh_domain_with_polyline_features_3 (const Mesh_domain_with_polyline_features_3 &)=default | |
| template<typename InputIterator > | |
| void | add_features (InputIterator first, InputIterator end) |
| adds 1-dimensional features in the domain. | |
| template<typename InputIterator , typename PolylinePMap , typename IncidentPatchesIndicesPMap > | |
| void | add_features_and_incidences (InputIterator first, InputIterator end, PolylinePMap polyline_pmap, IncidentPatchesIndicesPMap incident_patches_indices_pmap) |
adds 1-dimensional features (curves) from the range [first, end) in the domain with their incidences with 2-dimensional features (patches) of the domain. | |
| template<typename OutputIterator > | |
| OutputIterator | get_corners (OutputIterator out) const |
implements MeshDomainWithFeatures_3::get_corners(). | |
| template<typename OutputIterator > | |
| OutputIterator | get_curves (OutputIterator out) const |
implements MeshDomainWithFeatures_3::get_curves(). | |
| FT | curve_segment_length (const Point_3 &p, const Point_3 q, const Curve_index &curve_index, CGAL::Orientation orientation) const |
implements MeshDomainWithFeatures_3::curve_segment_length(). | |
| FT | curve_length (const Curve_index &curve_index) const |
implements MeshDomainWithFeatures_3::curve_length(). | |
| Point_3 | construct_point_on_curve (const Point_3 &starting_point, const Curve_index &curve_index, FT distance) const |
implements MeshDomainWithFeatures_3::construct_point_on_curve(). | |
| CGAL::Sign | distance_sign_along_loop (const Point_3 &p, const Point_3 &q, const Point_3 &r, const Curve_index &index) const |
implements MeshDomainWithFeatures_3::distance_sign_along_loop(). | |
| CGAL::Sign | distance_sign (const Point_3 &p, const Point_3 &q, const Curve_index &index) const |
implements MeshDomainWithFeatures_3::distance_sign(). | |
| bool | is_loop (const Curve_index &index) const |
implements MeshDomainWithFeatures_3::is_loop(). | |
| bool | is_curve_segment_covered (const Curve_index &index, CGAL::Orientation orientation, const Point_3 &c1, const Point_3 &c2, const FT sq_r1, const FT sq_r2) const |
implements MeshDomainWithFeatures_3::is_curve_segment_covered(). | |
| Index | index_from_surface_patch_index (const Surface_patch_index &index) const |
Returns the index to be stored in a vertex lying on the surface identified by index. | |
| Index | index_from_subdomain_index (const Subdomain_index &index) const |
Returns the index to be stored in a vertex lying in the subdomain identified by index. | |
| Index | index_from_curve_index (const Curve_index &index) const |
returns an Index from a Curve_index | |
| Index | index_from_corner_index (const Corner_index &index) const |
returns an Index from a Corner_index | |
| Surface_patch_index | surface_patch_index (const Index &index) const |
Returns the Surface_patch_index of the surface patch where lies a vertex with dimension 2 and index index. | |
| Subdomain_index | subdomain_index (const Index &index) const |
Returns the index of the subdomain containing a vertex with dimension 3 and index index. | |
| Curve_index | curve_index (const Index &index) const |
returns a Curve_index from an Index | |
| Corner_index | corner_index (const Index &index) const |
returns a Corner_index from an Index | |
Creation | |
| template<typename InputPolyhedraIterator , typename InputPairOfSubdomainIndicesIterator > | |
| Polyhedral_complex_mesh_domain_3 (InputPolyhedraIterator begin, InputPolyhedraIterator end, InputPairOfSubdomainIndicesIterator indices_begin, InputPairOfSubdomainIndicesIterator indices_end) | |
| constructs a domain defined by a set of polyhedral surfaces, describing a polyhedral complex. | |
Additional Inherited Members | |
| Public Types inherited from CGAL::Mesh_domain_with_polyline_features_3< MD > | |
| typedef MD::Surface_patch_index | Surface_patch_index |
| typedef MD::Subdomain_index | Subdomain_index |
| typedef int | Curve_index |
| typedef int | Corner_index |
| typedef unspecified_type | Index |
| typedef CGAL::Tag_true | Has_features |
| typedef MD::R::FT | FT |
| CGAL::Polyhedral_complex_mesh_domain_3< IGT, Polyhedron >::Polyhedral_complex_mesh_domain_3 | ( | InputPolyhedraIterator | begin, |
| InputPolyhedraIterator | end, | ||
| InputPairOfSubdomainIndicesIterator | indices_begin, | ||
| InputPairOfSubdomainIndicesIterator | indices_end | ||
| ) |
constructs a domain defined by a set of polyhedral surfaces, describing a polyhedral complex.
| begin | first iterator on the input polyhedral surfaces |
| end | past the end iterator on the input polyhedral surfaces |
| indices_begin | first iterator on the pairs of subdomain indices (two subdomain indices per input polyhedral surface), corresponding to the first input polyhedral surface. Each pair should be ordered as follows : the first (resp. second) element is the index of the subdomain that lies on the positively oriented (resp. negatively oriented) side of the corresponding input polyhedral surface. |
| indices_end | past the end iterator on the pairs of subdomain indices |
| InputPolyhedraIterator | model of ForwardIterator, holding Polyhedron's |
| InputPairOfSubdomainIndicesIterator | model of ForwardIterator, holding std::pair<Subdomain_index, Subdomain_index> |
std::distance(begin, end) == std::distance(indices_begin, indices_end) | void CGAL::Polyhedral_complex_mesh_domain_3< IGT, Polyhedron >::detect_borders | ( | ) |
detects border edges of the polyhedral components of the complex, and inserts them as features of the domain.
This function should only be called alone, and not before or after detect_features().
| void CGAL::Polyhedral_complex_mesh_domain_3< IGT, Polyhedron >::detect_features | ( | FT | angle_bound = FT(60) | ) |
detects sharp features and boundaries of the polyhedral components of the complex (including potential internal polyhedra), and inserts them as features of the domain.
angle_bound gives the maximum angle (in degrees) between the two normal vectors of adjacent triangles. For an edge of the polyhedron, if the angle between the two normal vectors of its incident facets is bigger than the given bound, then the edge is considered as a feature edge, and inserted as a feature of the domain.
1.9.6