/* ========================================================================= * * * * OpenMesh * * Copyright (c) 2001-2015, RWTH-Aachen University * * Department of Computer Graphics and Multimedia * * All rights reserved. * * www.openmesh.org * * * *---------------------------------------------------------------------------* * This file is part of OpenMesh. * *---------------------------------------------------------------------------* * * * Redistribution and use in source and binary forms, with or without * * modification, are permitted provided that the following conditions * * are met: * * * * 1. Redistributions of source code must retain the above copyright notice, * * this list of conditions and the following disclaimer. * * * * 2. Redistributions in binary form must reproduce the above copyright * * notice, this list of conditions and the following disclaimer in the * * documentation and/or other materials provided with the distribution. * * * * 3. Neither the name of the copyright holder nor the names of its * * contributors may be used to endorse or promote products derived from * * this software without specific prior written permission. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER * * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * * ========================================================================= */ #ifndef OPENMESH_POLYCONNECTIVITY_HH #define OPENMESH_POLYCONNECTIVITY_HH #include #include namespace OpenMesh { namespace Iterators { template class GenericIteratorT; template class GenericCirculatorBaseT; template class GenericCirculatorT_DEPRECATED; template class GenericCirculatorT; } template class EntityRange; template< typename CONTAINER_T, typename ITER_T, ITER_T (CONTAINER_T::*begin_fn)() const, ITER_T (CONTAINER_T::*end_fn)() const> struct RangeTraitT { using CONTAINER_TYPE = CONTAINER_T; using ITER_TYPE = ITER_T; static ITER_TYPE begin(const CONTAINER_TYPE& _container) { return (_container.*begin_fn)(); } static ITER_TYPE end(const CONTAINER_TYPE& _container) { return (_container.*end_fn)(); } }; template class CirculatorRange; template< typename CONTAINER_T, typename ITER_T, typename CENTER_ENTITY_T, typename TO_ENTITY_T, ITER_T (CONTAINER_T::*begin_fn)(CENTER_ENTITY_T) const, ITER_T (CONTAINER_T::*end_fn)(CENTER_ENTITY_T) const> struct CirculatorRangeTraitT { using CONTAINER_TYPE = CONTAINER_T; using ITER_TYPE = ITER_T; using CENTER_ENTITY_TYPE = CENTER_ENTITY_T; using TO_ENTITYE_TYPE = TO_ENTITY_T; static ITER_TYPE begin(const CONTAINER_TYPE& _container, CENTER_ENTITY_TYPE _ce) { return (_container.*begin_fn)(_ce); } static ITER_TYPE end(const CONTAINER_TYPE& _container, CENTER_ENTITY_TYPE _ce) { return (_container.*end_fn)(_ce); } }; struct SmartVertexHandle; struct SmartHalfedgeHandle; struct SmartEdgeHandle; struct SmartFaceHandle; /** \brief Connectivity Class for polygonal meshes */ class OPENMESHDLLEXPORT PolyConnectivity : public ArrayKernel { public: /// \name Mesh Handles //@{ /// Invalid handle static const VertexHandle InvalidVertexHandle; /// Invalid handle static const HalfedgeHandle InvalidHalfedgeHandle; /// Invalid handle static const EdgeHandle InvalidEdgeHandle; /// Invalid handle static const FaceHandle InvalidFaceHandle; //@} typedef PolyConnectivity This; //--- iterators --- /** \name Mesh Iterators Refer to OpenMesh::Mesh::Iterators or \ref mesh_iterators for documentation. */ //@{ /// Linear iterator typedef Iterators::GenericIteratorT VertexIter; typedef Iterators::GenericIteratorT HalfedgeIter; typedef Iterators::GenericIteratorT EdgeIter; typedef Iterators::GenericIteratorT FaceIter; typedef VertexIter ConstVertexIter; typedef HalfedgeIter ConstHalfedgeIter; typedef EdgeIter ConstEdgeIter; typedef FaceIter ConstFaceIter; //@} //--- circulators --- /** \name Mesh Circulators Refer to OpenMesh::Mesh::Iterators or \ref mesh_iterators for documentation. */ //@{ /* * Vertex-centered circulators */ struct VertexVertexTraits { using Mesh = This; using CenterEntityHandle = This::VertexHandle; using ValueHandle = This::VertexHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return _mesh->to_vertex_handle(_heh);} }; /** * Enumerates 1-ring vertices in a clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED VertexVertexIter; typedef Iterators::GenericCirculatorT VertexVertexCWIter; /** * Enumerates 1-ring vertices in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT VertexVertexCCWIter; struct VertexHalfedgeTraits { using Mesh = This; using CenterEntityHandle = This::VertexHandle; using ValueHandle = This::HalfedgeHandle; static ValueHandle toHandle(const Mesh* const /*_mesh*/, This::HalfedgeHandle _heh) { return _heh;} }; /** * Enumerates outgoing half edges in a clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED VertexOHalfedgeIter; typedef Iterators::GenericCirculatorT VertexOHalfedgeCWIter; /** * Enumerates outgoing half edges in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT VertexOHalfedgeCCWIter; struct VertexOppositeHalfedgeTraits { using Mesh = This; using CenterEntityHandle = This::VertexHandle; using ValueHandle = This::HalfedgeHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return _mesh->opposite_halfedge_handle(_heh); } }; /** * Enumerates incoming half edges in a clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED VertexIHalfedgeIter; typedef Iterators::GenericCirculatorT VertexIHalfedgeCWIter; /** * Enumerates incoming half edges in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT VertexIHalfedgeCCWIter; struct VertexFaceTraits { using Mesh = This; using CenterEntityHandle = This::VertexHandle; using ValueHandle = This::FaceHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return static_cast(_mesh)->face_handle(_heh); } }; /** * Enumerates incident faces in a clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED VertexFaceIter; typedef Iterators::GenericCirculatorT VertexFaceCWIter; /** * Enumerates incident faces in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT VertexFaceCCWIter; struct VertexEdgeTraits { using Mesh = This; using CenterEntityHandle = This::VertexHandle; using ValueHandle = This::EdgeHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return static_cast(_mesh)->edge_handle(_heh); } }; /** * Enumerates incident edges in a clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED VertexEdgeIter; typedef Iterators::GenericCirculatorT VertexEdgeCWIter; /** * Enumerates incident edges in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT VertexEdgeCCWIter; struct FaceHalfedgeTraits { using Mesh = This; using CenterEntityHandle = This::FaceHandle; using ValueHandle = This::HalfedgeHandle; static ValueHandle toHandle(const Mesh* const /*_mesh*/, This::HalfedgeHandle _heh) { return _heh; } }; /** * Identical to #FaceHalfedgeIter. God knows why this typedef exists. */ typedef Iterators::GenericCirculatorT_DEPRECATED HalfedgeLoopIter; typedef Iterators::GenericCirculatorT HalfedgeLoopCWIter; /** * Identical to #FaceHalfedgeIter. God knows why this typedef exists. */ typedef Iterators::GenericCirculatorT HalfedgeLoopCCWIter; typedef VertexVertexIter ConstVertexVertexIter; typedef VertexVertexCWIter ConstVertexVertexCWIter; typedef VertexVertexCCWIter ConstVertexVertexCCWIter; typedef VertexOHalfedgeIter ConstVertexOHalfedgeIter; typedef VertexOHalfedgeCWIter ConstVertexOHalfedgeCWIter; typedef VertexOHalfedgeCCWIter ConstVertexOHalfedgeCCWIter; typedef VertexIHalfedgeIter ConstVertexIHalfedgeIter; typedef VertexIHalfedgeCWIter ConstVertexIHalfedgeCWIter; typedef VertexIHalfedgeCCWIter ConstVertexIHalfedgeCCWIter; typedef VertexFaceIter ConstVertexFaceIter; typedef VertexFaceCWIter ConstVertexFaceCWIter; typedef VertexFaceCCWIter ConstVertexFaceCCWIter; typedef VertexEdgeIter ConstVertexEdgeIter; typedef VertexEdgeCWIter ConstVertexEdgeCWIter; typedef VertexEdgeCCWIter ConstVertexEdgeCCWIter; /* * Face-centered circulators */ struct FaceVertexTraits { using Mesh = This; using CenterEntityHandle = This::FaceHandle; using ValueHandle = This::VertexHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return static_cast(_mesh)->to_vertex_handle(_heh); } }; /** * Enumerate incident vertices in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED FaceVertexIter; typedef Iterators::GenericCirculatorT FaceVertexCCWIter; /** * Enumerate incident vertices in a clockwise fashion. */ typedef Iterators::GenericCirculatorT FaceVertexCWIter; /** * Enumerate incident half edges in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED FaceHalfedgeIter; typedef Iterators::GenericCirculatorT FaceHalfedgeCCWIter; /** * Enumerate incident half edges in a clockwise fashion. */ typedef Iterators::GenericCirculatorT FaceHalfedgeCWIter; struct FaceEdgeTraits { using Mesh = This; using CenterEntityHandle = This::FaceHandle; using ValueHandle = This::EdgeHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return static_cast(_mesh)->edge_handle(_heh); } }; /** * Enumerate incident edges in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED FaceEdgeIter; typedef Iterators::GenericCirculatorT FaceEdgeCCWIter; /** * Enumerate incident edges in a clockwise fashion. */ typedef Iterators::GenericCirculatorT FaceEdgeCWIter; struct FaceFaceTraits { using Mesh = This; using CenterEntityHandle = This::FaceHandle; using ValueHandle = This::FaceHandle; static ValueHandle toHandle(const Mesh* const _mesh, This::HalfedgeHandle _heh) { return static_cast(_mesh)->face_handle(_mesh->opposite_halfedge_handle(_heh)); } }; /** * Enumerate adjacent faces in a counter clockwise fashion. */ typedef Iterators::GenericCirculatorT_DEPRECATED FaceFaceIter; typedef Iterators::GenericCirculatorT FaceFaceCCWIter; /** * Enumerate adjacent faces in a clockwise fashion. */ typedef Iterators::GenericCirculatorT FaceFaceCWIter; typedef FaceVertexIter ConstFaceVertexIter; typedef FaceVertexCWIter ConstFaceVertexCWIter; typedef FaceVertexCCWIter ConstFaceVertexCCWIter; typedef FaceHalfedgeIter ConstFaceHalfedgeIter; typedef FaceHalfedgeCWIter ConstFaceHalfedgeCWIter; typedef FaceHalfedgeCCWIter ConstFaceHalfedgeCCWIter; typedef FaceEdgeIter ConstFaceEdgeIter; typedef FaceEdgeCWIter ConstFaceEdgeCWIter; typedef FaceEdgeCCWIter ConstFaceEdgeCCWIter; typedef FaceFaceIter ConstFaceFaceIter; typedef FaceFaceCWIter ConstFaceFaceCWIter; typedef FaceFaceCCWIter ConstFaceFaceCCWIter; /* * Halfedge circulator */ typedef HalfedgeLoopIter ConstHalfedgeLoopIter; typedef HalfedgeLoopCWIter ConstHalfedgeLoopCWIter; typedef HalfedgeLoopCCWIter ConstHalfedgeLoopCCWIter; //@} // --- shortcuts /** \name Typedef Shortcuts Provided for convenience only */ //@{ /// Alias typedef typedef VertexHandle VHandle; typedef HalfedgeHandle HHandle; typedef EdgeHandle EHandle; typedef FaceHandle FHandle; typedef VertexIter VIter; typedef HalfedgeIter HIter; typedef EdgeIter EIter; typedef FaceIter FIter; typedef ConstVertexIter CVIter; typedef ConstHalfedgeIter CHIter; typedef ConstEdgeIter CEIter; typedef ConstFaceIter CFIter; typedef VertexVertexIter VVIter; typedef VertexVertexCWIter VVCWIter; typedef VertexVertexCCWIter VVCCWIter; typedef VertexOHalfedgeIter VOHIter; typedef VertexOHalfedgeCWIter VOHCWIter; typedef VertexOHalfedgeCCWIter VOHCCWIter; typedef VertexIHalfedgeIter VIHIter; typedef VertexIHalfedgeCWIter VIHICWter; typedef VertexIHalfedgeCCWIter VIHICCWter; typedef VertexEdgeIter VEIter; typedef VertexEdgeCWIter VECWIter; typedef VertexEdgeCCWIter VECCWIter; typedef VertexFaceIter VFIter; typedef VertexFaceCWIter VFCWIter; typedef VertexFaceCCWIter VFCCWIter; typedef FaceVertexIter FVIter; typedef FaceVertexCWIter FVCWIter; typedef FaceVertexCCWIter FVCCWIter; typedef FaceHalfedgeIter FHIter; typedef FaceHalfedgeCWIter FHCWIter; typedef FaceHalfedgeCCWIter FHCWWIter; typedef FaceEdgeIter FEIter; typedef FaceEdgeCWIter FECWIter; typedef FaceEdgeCCWIter FECWWIter; typedef FaceFaceIter FFIter; typedef ConstVertexVertexIter CVVIter; typedef ConstVertexVertexCWIter CVVCWIter; typedef ConstVertexVertexCCWIter CVVCCWIter; typedef ConstVertexOHalfedgeIter CVOHIter; typedef ConstVertexOHalfedgeCWIter CVOHCWIter; typedef ConstVertexOHalfedgeCCWIter CVOHCCWIter; typedef ConstVertexIHalfedgeIter CVIHIter; typedef ConstVertexIHalfedgeCWIter CVIHCWIter; typedef ConstVertexIHalfedgeCCWIter CVIHCCWIter; typedef ConstVertexEdgeIter CVEIter; typedef ConstVertexEdgeCWIter CVECWIter; typedef ConstVertexEdgeCCWIter CVECCWIter; typedef ConstVertexFaceIter CVFIter; typedef ConstVertexFaceCWIter CVFCWIter; typedef ConstVertexFaceCCWIter CVFCCWIter; typedef ConstFaceVertexIter CFVIter; typedef ConstFaceVertexCWIter CFVCWIter; typedef ConstFaceVertexCCWIter CFVCCWIter; typedef ConstFaceHalfedgeIter CFHIter; typedef ConstFaceHalfedgeCWIter CFHCWIter; typedef ConstFaceHalfedgeCCWIter CFHCCWIter; typedef ConstFaceEdgeIter CFEIter; typedef ConstFaceEdgeCWIter CFECWIter; typedef ConstFaceEdgeCCWIter CFECCWIter; typedef ConstFaceFaceIter CFFIter; typedef ConstFaceFaceCWIter CFFCWIter; typedef ConstFaceFaceCCWIter CFFCCWIter; //@} public: PolyConnectivity() {} virtual ~PolyConnectivity() {} inline static bool is_triangles() { return false; } /** assign_connectivity() method. See ArrayKernel::assign_connectivity() for more details. */ inline void assign_connectivity(const PolyConnectivity& _other) { ArrayKernel::assign_connectivity(_other); } /** \name Adding items to a mesh */ //@{ /// Add a new vertex inline SmartVertexHandle add_vertex(); /** \brief Add and connect a new face * * Create a new face consisting of the vertices provided by the vertex handle vector. * (The vertices have to be already added to the mesh by add_vertex) * * @param _vhandles sorted list of vertex handles (also defines order in which the vertices are added to the face) */ SmartFaceHandle add_face(const std::vector& _vhandles); /** \brief Add and connect a new face * * Create a new face consisting of the vertices provided by the vertex handle vector. * (The vertices have to be already added to the mesh by add_vertex) * * @param _vhandles sorted list of vertex handles (also defines order in which the vertices are added to the face) */ SmartFaceHandle add_face(const std::vector& _vhandles); /** \brief Add and connect a new face * * Create a new face consisting of three vertices provided by the handles. * (The vertices have to be already added to the mesh by add_vertex) * * @param _vh0 First vertex handle * @param _vh1 Second vertex handle * @param _vh2 Third vertex handle */ SmartFaceHandle add_face(VertexHandle _vh0, VertexHandle _vh1, VertexHandle _vh2); /** \brief Add and connect a new face * * Create a new face consisting of four vertices provided by the handles. * (The vertices have to be already added to the mesh by add_vertex) * * @param _vh0 First vertex handle * @param _vh1 Second vertex handle * @param _vh2 Third vertex handle * @param _vh3 Fourth vertex handle */ SmartFaceHandle add_face(VertexHandle _vh0, VertexHandle _vh1, VertexHandle _vh2, VertexHandle _vh3); /** \brief Add and connect a new face * * Create a new face consisting of vertices provided by a handle array. * (The vertices have to be already added to the mesh by add_vertex) * * @param _vhandles pointer to a sorted list of vertex handles (also defines order in which the vertices are added to the face) * @param _vhs_size number of vertex handles in the array */ SmartFaceHandle add_face(const VertexHandle* _vhandles, size_t _vhs_size); //@} /// \name Deleting mesh items and other connectivity/topology modifications //@{ /** Returns whether collapsing halfedge _heh is ok or would lead to topological inconsistencies. \attention This method need the Attributes::Status attribute and changes the \em tagged bit. */ bool is_collapse_ok(HalfedgeHandle _he); /** Mark vertex and all incident edges and faces deleted. Items marked deleted will be removed by garbageCollection(). \attention Needs the Attributes::Status attribute for vertices, edges and faces. */ void delete_vertex(VertexHandle _vh, bool _delete_isolated_vertices = true); /** Mark edge (two opposite halfedges) and incident faces deleted. Resulting isolated vertices are marked deleted if _delete_isolated_vertices is true. Items marked deleted will be removed by garbageCollection(). \attention Needs the Attributes::Status attribute for vertices, edges and faces. */ void delete_edge(EdgeHandle _eh, bool _delete_isolated_vertices=true); /** Delete face _fh and resulting degenerated empty halfedges as well. Resulting isolated vertices will be deleted if _delete_isolated_vertices is true. \attention All item will only be marked to be deleted. They will actually be removed by calling garbage_collection(). \attention Needs the Attributes::Status attribute for vertices, edges and faces. */ void delete_face(FaceHandle _fh, bool _delete_isolated_vertices=true); //@} /** \name Navigation with smart handles to allow usage of old-style navigation with smart handles */ //@{ using ArrayKernel::next_halfedge_handle; using ArrayKernel::prev_halfedge_handle; using ArrayKernel::opposite_halfedge_handle; using ArrayKernel::ccw_rotated_halfedge_handle; using ArrayKernel::cw_rotated_halfedge_handle; inline SmartHalfedgeHandle next_halfedge_handle (SmartHalfedgeHandle _heh) const; inline SmartHalfedgeHandle prev_halfedge_handle (SmartHalfedgeHandle _heh) const; inline SmartHalfedgeHandle opposite_halfedge_handle (SmartHalfedgeHandle _heh) const; inline SmartHalfedgeHandle ccw_rotated_halfedge_handle(SmartHalfedgeHandle _heh) const; inline SmartHalfedgeHandle cw_rotated_halfedge_handle (SmartHalfedgeHandle _heh) const; using ArrayKernel::s_halfedge_handle; using ArrayKernel::s_edge_handle; static SmartHalfedgeHandle s_halfedge_handle(SmartEdgeHandle _eh, unsigned int _i); static SmartEdgeHandle s_edge_handle(SmartHalfedgeHandle _heh); using ArrayKernel::halfedge_handle; using ArrayKernel::edge_handle; using ArrayKernel::face_handle; inline SmartHalfedgeHandle halfedge_handle(SmartEdgeHandle _eh, unsigned int _i) const; inline SmartHalfedgeHandle halfedge_handle(SmartFaceHandle _fh) const; inline SmartHalfedgeHandle halfedge_handle(SmartVertexHandle _vh) const; inline SmartEdgeHandle edge_handle(SmartHalfedgeHandle _heh) const; inline SmartFaceHandle face_handle(SmartHalfedgeHandle _heh) const; /// returns the face handle of the opposite halfedge inline SmartFaceHandle opposite_face_handle(HalfedgeHandle _heh) const; //@} /** \name Begin and end iterators */ //@{ /// Begin iterator for vertices VertexIter vertices_begin(); /// Const begin iterator for vertices ConstVertexIter vertices_begin() const; /// End iterator for vertices VertexIter vertices_end(); /// Const end iterator for vertices ConstVertexIter vertices_end() const; /// Begin iterator for halfedges HalfedgeIter halfedges_begin(); /// Const begin iterator for halfedges ConstHalfedgeIter halfedges_begin() const; /// End iterator for halfedges HalfedgeIter halfedges_end(); /// Const end iterator for halfedges ConstHalfedgeIter halfedges_end() const; /// Begin iterator for edges EdgeIter edges_begin(); /// Const begin iterator for edges ConstEdgeIter edges_begin() const; /// End iterator for edges EdgeIter edges_end(); /// Const end iterator for edges ConstEdgeIter edges_end() const; /// Begin iterator for faces FaceIter faces_begin(); /// Const begin iterator for faces ConstFaceIter faces_begin() const; /// End iterator for faces FaceIter faces_end(); /// Const end iterator for faces ConstFaceIter faces_end() const; //@} /** \name Begin for skipping iterators */ //@{ /// Begin iterator for vertices VertexIter vertices_sbegin(); /// Const begin iterator for vertices ConstVertexIter vertices_sbegin() const; /// Begin iterator for halfedges HalfedgeIter halfedges_sbegin(); /// Const begin iterator for halfedges ConstHalfedgeIter halfedges_sbegin() const; /// Begin iterator for edges EdgeIter edges_sbegin(); /// Const begin iterator for edges ConstEdgeIter edges_sbegin() const; /// Begin iterator for faces FaceIter faces_sbegin(); /// Const begin iterator for faces ConstFaceIter faces_sbegin() const; //@} //--- circulators --- /** \name Vertex and Face circulators */ //@{ /// vertex - vertex circulator VertexVertexIter vv_iter(VertexHandle _vh); /// vertex - vertex circulator cw VertexVertexCWIter vv_cwiter(VertexHandle _vh); /// vertex - vertex circulator ccw VertexVertexCCWIter vv_ccwiter(VertexHandle _vh); /// vertex - incoming halfedge circulator VertexIHalfedgeIter vih_iter(VertexHandle _vh); /// vertex - incoming halfedge circulator cw VertexIHalfedgeCWIter vih_cwiter(VertexHandle _vh); /// vertex - incoming halfedge circulator ccw VertexIHalfedgeCCWIter vih_ccwiter(VertexHandle _vh); /// vertex - outgoing halfedge circulator VertexOHalfedgeIter voh_iter(VertexHandle _vh); /// vertex - outgoing halfedge circulator cw VertexOHalfedgeCWIter voh_cwiter(VertexHandle _vh); /// vertex - outgoing halfedge circulator ccw VertexOHalfedgeCCWIter voh_ccwiter(VertexHandle _vh); /// vertex - edge circulator VertexEdgeIter ve_iter(VertexHandle _vh); /// vertex - edge circulator cw VertexEdgeCWIter ve_cwiter(VertexHandle _vh); /// vertex - edge circulator ccw VertexEdgeCCWIter ve_ccwiter(VertexHandle _vh); /// vertex - face circulator VertexFaceIter vf_iter(VertexHandle _vh); /// vertex - face circulator cw VertexFaceCWIter vf_cwiter(VertexHandle _vh); /// vertex - face circulator ccw VertexFaceCCWIter vf_ccwiter(VertexHandle _vh); /// const vertex circulator ConstVertexVertexIter cvv_iter(VertexHandle _vh) const; /// const vertex circulator cw ConstVertexVertexCWIter cvv_cwiter(VertexHandle _vh) const; /// const vertex circulator ccw ConstVertexVertexCCWIter cvv_ccwiter(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ConstVertexIHalfedgeIter cvih_iter(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator cw ConstVertexIHalfedgeCWIter cvih_cwiter(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ccw ConstVertexIHalfedgeCCWIter cvih_ccwiter(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ConstVertexOHalfedgeIter cvoh_iter(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator cw ConstVertexOHalfedgeCWIter cvoh_cwiter(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ccw ConstVertexOHalfedgeCCWIter cvoh_ccwiter(VertexHandle _vh) const; /// const vertex - edge circulator ConstVertexEdgeIter cve_iter(VertexHandle _vh) const; /// const vertex - edge circulator cw ConstVertexEdgeCWIter cve_cwiter(VertexHandle _vh) const; /// const vertex - edge circulator ccw ConstVertexEdgeCCWIter cve_ccwiter(VertexHandle _vh) const; /// const vertex - face circulator ConstVertexFaceIter cvf_iter(VertexHandle _vh) const; /// const vertex - face circulator cw ConstVertexFaceCWIter cvf_cwiter(VertexHandle _vh) const; /// const vertex - face circulator ccw ConstVertexFaceCCWIter cvf_ccwiter(VertexHandle _vh) const; /// face - vertex circulator FaceVertexIter fv_iter(FaceHandle _fh); /// face - vertex circulator cw FaceVertexCWIter fv_cwiter(FaceHandle _fh); /// face - vertex circulator ccw FaceVertexCCWIter fv_ccwiter(FaceHandle _fh); /// face - halfedge circulator FaceHalfedgeIter fh_iter(FaceHandle _fh); /// face - halfedge circulator cw FaceHalfedgeCWIter fh_cwiter(FaceHandle _fh); /// face - halfedge circulator ccw FaceHalfedgeCCWIter fh_ccwiter(FaceHandle _fh); /// face - edge circulator FaceEdgeIter fe_iter(FaceHandle _fh); /// face - edge circulator cw FaceEdgeCWIter fe_cwiter(FaceHandle _fh); /// face - edge circulator ccw FaceEdgeCCWIter fe_ccwiter(FaceHandle _fh); /// face - face circulator FaceFaceIter ff_iter(FaceHandle _fh); /// face - face circulator cw FaceFaceCWIter ff_cwiter(FaceHandle _fh); /// face - face circulator ccw FaceFaceCCWIter ff_ccwiter(FaceHandle _fh); /// const face - vertex circulator ConstFaceVertexIter cfv_iter(FaceHandle _fh) const; /// const face - vertex circulator cw ConstFaceVertexCWIter cfv_cwiter(FaceHandle _fh) const; /// const face - vertex circulator ccw ConstFaceVertexCCWIter cfv_ccwiter(FaceHandle _fh) const; /// const face - halfedge circulator ConstFaceHalfedgeIter cfh_iter(FaceHandle _fh) const; /// const face - halfedge circulator cw ConstFaceHalfedgeCWIter cfh_cwiter(FaceHandle _fh) const; /// const face - halfedge circulator ccw ConstFaceHalfedgeCCWIter cfh_ccwiter(FaceHandle _fh) const; /// const face - edge circulator ConstFaceEdgeIter cfe_iter(FaceHandle _fh) const; /// const face - edge circulator cw ConstFaceEdgeCWIter cfe_cwiter(FaceHandle _fh) const; /// const face - edge circulator ccw ConstFaceEdgeCCWIter cfe_ccwiter(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceIter cff_iter(FaceHandle _fh) const; /// const face - face circulator cw ConstFaceFaceCWIter cff_cwiter(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceCCWIter cff_ccwiter(FaceHandle _fh) const; // 'begin' circulators /// vertex - vertex circulator VertexVertexIter vv_begin(VertexHandle _vh); /// vertex - vertex circulator cw VertexVertexCWIter vv_cwbegin(VertexHandle _vh); /// vertex - vertex circulator ccw VertexVertexCCWIter vv_ccwbegin(VertexHandle _vh); /// vertex - incoming halfedge circulator VertexIHalfedgeIter vih_begin(VertexHandle _vh); /// vertex - incoming halfedge circulator cw VertexIHalfedgeCWIter vih_cwbegin(VertexHandle _vh); /// vertex - incoming halfedge circulator ccw VertexIHalfedgeCCWIter vih_ccwbegin(VertexHandle _vh); /// vertex - outgoing halfedge circulator VertexOHalfedgeIter voh_begin(VertexHandle _vh); /// vertex - outgoing halfedge circulator cw VertexOHalfedgeCWIter voh_cwbegin(VertexHandle _vh); /// vertex - outgoing halfedge circulator ccw VertexOHalfedgeCCWIter voh_ccwbegin(VertexHandle _vh); /// vertex - edge circulator VertexEdgeIter ve_begin(VertexHandle _vh); /// vertex - edge circulator cw VertexEdgeCWIter ve_cwbegin(VertexHandle _vh); /// vertex - edge circulator ccw VertexEdgeCCWIter ve_ccwbegin(VertexHandle _vh); /// vertex - face circulator VertexFaceIter vf_begin(VertexHandle _vh); /// vertex - face circulator cw VertexFaceCWIter vf_cwbegin(VertexHandle _vh); /// vertex - face circulator ccw VertexFaceCCWIter vf_ccwbegin(VertexHandle _vh); /// const vertex circulator ConstVertexVertexIter cvv_begin(VertexHandle _vh) const; /// const vertex circulator cw ConstVertexVertexCWIter cvv_cwbegin(VertexHandle _vh) const; /// const vertex circulator ccw ConstVertexVertexCCWIter cvv_ccwbegin(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ConstVertexIHalfedgeIter cvih_begin(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator cw ConstVertexIHalfedgeCWIter cvih_cwbegin(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ccw ConstVertexIHalfedgeCCWIter cvih_ccwbegin(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ConstVertexOHalfedgeIter cvoh_begin(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator cw ConstVertexOHalfedgeCWIter cvoh_cwbegin(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ccw ConstVertexOHalfedgeCCWIter cvoh_ccwbegin(VertexHandle _vh) const; /// const vertex - edge circulator ConstVertexEdgeIter cve_begin(VertexHandle _vh) const; /// const vertex - edge circulator cw ConstVertexEdgeCWIter cve_cwbegin(VertexHandle _vh) const; /// const vertex - edge circulator ccw ConstVertexEdgeCCWIter cve_ccwbegin(VertexHandle _vh) const; /// const vertex - face circulator ConstVertexFaceIter cvf_begin(VertexHandle _vh) const; /// const vertex - face circulator cw ConstVertexFaceCWIter cvf_cwbegin(VertexHandle _vh) const; /// const vertex - face circulator ccw ConstVertexFaceCCWIter cvf_ccwbegin(VertexHandle _vh) const; /// face - vertex circulator FaceVertexIter fv_begin(FaceHandle _fh); /// face - vertex circulator cw FaceVertexCWIter fv_cwbegin(FaceHandle _fh); /// face - vertex circulator ccw FaceVertexCCWIter fv_ccwbegin(FaceHandle _fh); /// face - halfedge circulator FaceHalfedgeIter fh_begin(FaceHandle _fh); /// face - halfedge circulator cw FaceHalfedgeCWIter fh_cwbegin(FaceHandle _fh); /// face - halfedge circulator ccw FaceHalfedgeCCWIter fh_ccwbegin(FaceHandle _fh); /// face - edge circulator FaceEdgeIter fe_begin(FaceHandle _fh); /// face - edge circulator cw FaceEdgeCWIter fe_cwbegin(FaceHandle _fh); /// face - edge circulator ccw FaceEdgeCCWIter fe_ccwbegin(FaceHandle _fh); /// face - face circulator FaceFaceIter ff_begin(FaceHandle _fh); /// face - face circulator cw FaceFaceCWIter ff_cwbegin(FaceHandle _fh); /// face - face circulator ccw FaceFaceCCWIter ff_ccwbegin(FaceHandle _fh); /// halfedge circulator HalfedgeLoopIter hl_begin(HalfedgeHandle _heh); /// halfedge circulator HalfedgeLoopCWIter hl_cwbegin(HalfedgeHandle _heh); /// halfedge circulator ccw HalfedgeLoopCCWIter hl_ccwbegin(HalfedgeHandle _heh); /// const face - vertex circulator ConstFaceVertexIter cfv_begin(FaceHandle _fh) const; /// const face - vertex circulator cw ConstFaceVertexCWIter cfv_cwbegin(FaceHandle _fh) const; /// const face - vertex circulator ccw ConstFaceVertexCCWIter cfv_ccwbegin(FaceHandle _fh) const; /// const face - halfedge circulator ConstFaceHalfedgeIter cfh_begin(FaceHandle _fh) const; /// const face - halfedge circulator cw ConstFaceHalfedgeCWIter cfh_cwbegin(FaceHandle _fh) const; /// const face - halfedge circulator ccw ConstFaceHalfedgeCCWIter cfh_ccwbegin(FaceHandle _fh) const; /// const face - edge circulator ConstFaceEdgeIter cfe_begin(FaceHandle _fh) const; /// const face - edge circulator cw ConstFaceEdgeCWIter cfe_cwbegin(FaceHandle _fh) const; /// const face - edge circulator ccw ConstFaceEdgeCCWIter cfe_ccwbegin(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceIter cff_begin(FaceHandle _fh) const; /// const face - face circulator cw ConstFaceFaceCWIter cff_cwbegin(FaceHandle _fh) const; /// const face - face circulator ccw ConstFaceFaceCCWIter cff_ccwbegin(FaceHandle _fh) const; /// const halfedge circulator ConstHalfedgeLoopIter chl_begin(HalfedgeHandle _heh) const; /// const halfedge circulator cw ConstHalfedgeLoopCWIter chl_cwbegin(HalfedgeHandle _heh) const; /// const halfedge circulator ccw ConstHalfedgeLoopCCWIter chl_ccwbegin(HalfedgeHandle _heh) const; // 'end' circulators /// vertex - vertex circulator VertexVertexIter vv_end(VertexHandle _vh); /// vertex - vertex circulator cw VertexVertexCWIter vv_cwend(VertexHandle _vh); /// vertex - vertex circulator ccw VertexVertexCCWIter vv_ccwend(VertexHandle _vh); /// vertex - incoming halfedge circulator VertexIHalfedgeIter vih_end(VertexHandle _vh); /// vertex - incoming halfedge circulator cw VertexIHalfedgeCWIter vih_cwend(VertexHandle _vh); /// vertex - incoming halfedge circulator ccw VertexIHalfedgeCCWIter vih_ccwend(VertexHandle _vh); /// vertex - outgoing halfedge circulator VertexOHalfedgeIter voh_end(VertexHandle _vh); /// vertex - outgoing halfedge circulator cw VertexOHalfedgeCWIter voh_cwend(VertexHandle _vh); /// vertex - outgoing halfedge circulator ccw VertexOHalfedgeCCWIter voh_ccwend(VertexHandle _vh); /// vertex - edge circulator VertexEdgeIter ve_end(VertexHandle _vh); /// vertex - edge circulator cw VertexEdgeCWIter ve_cwend(VertexHandle _vh); /// vertex - edge circulator ccw VertexEdgeCCWIter ve_ccwend(VertexHandle _vh); /// vertex - face circulator VertexFaceIter vf_end(VertexHandle _vh); /// vertex - face circulator cw VertexFaceCWIter vf_cwend(VertexHandle _vh); /// vertex - face circulator ccw VertexFaceCCWIter vf_ccwend(VertexHandle _vh); /// const vertex circulator ConstVertexVertexIter cvv_end(VertexHandle _vh) const; /// const vertex circulator cw ConstVertexVertexCWIter cvv_cwend(VertexHandle _vh) const; /// const vertex circulator ccw ConstVertexVertexCCWIter cvv_ccwend(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ConstVertexIHalfedgeIter cvih_end(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator cw ConstVertexIHalfedgeCWIter cvih_cwend(VertexHandle _vh) const; /// const vertex - incoming halfedge circulator ccw ConstVertexIHalfedgeCCWIter cvih_ccwend(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ConstVertexOHalfedgeIter cvoh_end(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator cw ConstVertexOHalfedgeCWIter cvoh_cwend(VertexHandle _vh) const; /// const vertex - outgoing halfedge circulator ccw ConstVertexOHalfedgeCCWIter cvoh_ccwend(VertexHandle _vh) const; /// const vertex - edge circulator ConstVertexEdgeIter cve_end(VertexHandle _vh) const; /// const vertex - edge circulator cw ConstVertexEdgeCWIter cve_cwend(VertexHandle _vh) const; /// const vertex - edge circulator ccw ConstVertexEdgeCCWIter cve_ccwend(VertexHandle _vh) const; /// const vertex - face circulator ConstVertexFaceIter cvf_end(VertexHandle _vh) const; /// const vertex - face circulator cw ConstVertexFaceCWIter cvf_cwend(VertexHandle _vh) const; /// const vertex - face circulator ccw ConstVertexFaceCCWIter cvf_ccwend(VertexHandle _vh) const; /// face - vertex circulator FaceVertexIter fv_end(FaceHandle _fh); /// face - vertex circulator cw FaceVertexCWIter fv_cwend(FaceHandle _fh); /// face - vertex circulator ccw FaceVertexCCWIter fv_ccwend(FaceHandle _fh); /// face - halfedge circulator FaceHalfedgeIter fh_end(FaceHandle _fh); /// face - halfedge circulator cw FaceHalfedgeCWIter fh_cwend(FaceHandle _fh); /// face - halfedge circulator ccw FaceHalfedgeCCWIter fh_ccwend(FaceHandle _fh); /// face - edge circulator FaceEdgeIter fe_end(FaceHandle _fh); /// face - edge circulator cw FaceEdgeCWIter fe_cwend(FaceHandle _fh); /// face - edge circulator ccw FaceEdgeCCWIter fe_ccwend(FaceHandle _fh); /// face - face circulator FaceFaceIter ff_end(FaceHandle _fh); /// face - face circulator cw FaceFaceCWIter ff_cwend(FaceHandle _fh); /// face - face circulator ccw FaceFaceCCWIter ff_ccwend(FaceHandle _fh); /// face - face circulator HalfedgeLoopIter hl_end(HalfedgeHandle _heh); /// face - face circulator cw HalfedgeLoopCWIter hl_cwend(HalfedgeHandle _heh); /// face - face circulator ccw HalfedgeLoopCCWIter hl_ccwend(HalfedgeHandle _heh); /// const face - vertex circulator ConstFaceVertexIter cfv_end(FaceHandle _fh) const; /// const face - vertex circulator cw ConstFaceVertexCWIter cfv_cwend(FaceHandle _fh) const; /// const face - vertex circulator ccw ConstFaceVertexCCWIter cfv_ccwend(FaceHandle _fh) const; /// const face - halfedge circulator ConstFaceHalfedgeIter cfh_end(FaceHandle _fh) const; /// const face - halfedge circulator cw ConstFaceHalfedgeCWIter cfh_cwend(FaceHandle _fh) const; /// const face - halfedge circulator ccw ConstFaceHalfedgeCCWIter cfh_ccwend(FaceHandle _fh) const; /// const face - edge circulator ConstFaceEdgeIter cfe_end(FaceHandle _fh) const; /// const face - edge circulator cw ConstFaceEdgeCWIter cfe_cwend(FaceHandle _fh) const; /// const face - edge circulator ccw ConstFaceEdgeCCWIter cfe_ccwend(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceIter cff_end(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceCWIter cff_cwend(FaceHandle _fh) const; /// const face - face circulator ConstFaceFaceCCWIter cff_ccwend(FaceHandle _fh) const; /// const face - face circulator ConstHalfedgeLoopIter chl_end(HalfedgeHandle _heh) const; /// const face - face circulator cw ConstHalfedgeLoopCWIter chl_cwend(HalfedgeHandle _heh) const; /// const face - face circulator ccw ConstHalfedgeLoopCCWIter chl_ccwend(HalfedgeHandle _heh) const; //@} /** @name Range based iterators and circulators */ //@{ typedef EntityRange> ConstVertexRange; typedef EntityRange> ConstVertexRangeSkipping; typedef EntityRange> ConstHalfedgeRange; typedef EntityRange> ConstHalfedgeRangeSkipping; typedef EntityRange> ConstEdgeRange; typedef EntityRange> ConstEdgeRangeSkipping; typedef EntityRange> ConstFaceRange; typedef EntityRange> ConstFaceRangeSkipping; template struct ElementRange; /** * @return The vertices as a range object suitable * for C++11 range based for loops. Will skip deleted vertices. */ ConstVertexRangeSkipping vertices() const; /** * @return The vertices as a range object suitable * for C++11 range based for loops. Will include deleted vertices. */ ConstVertexRange all_vertices() const; /** * @return The halfedges as a range object suitable * for C++11 range based for loops. Will skip deleted halfedges. */ ConstHalfedgeRangeSkipping halfedges() const; /** * @return The halfedges as a range object suitable * for C++11 range based for loops. Will include deleted halfedges. */ ConstHalfedgeRange all_halfedges() const; /** * @return The edges as a range object suitable * for C++11 range based for loops. Will skip deleted edges. */ ConstEdgeRangeSkipping edges() const; /** * @return The edges as a range object suitable * for C++11 range based for loops. Will include deleted edges. */ ConstEdgeRange all_edges() const; /** * @return The faces as a range object suitable * for C++11 range based for loops. Will skip deleted faces. */ ConstFaceRangeSkipping faces() const; /** * @return The faces as a range object suitable * for C++11 range based for loops. Will include deleted faces. */ ConstFaceRange all_faces() const; /** * @return The elements corresponding to the template type as a range object suitable * for C++11 range based for loops. Will skip deleted faces. */ template typename ElementRange::RangeSkipping elements() const; /** * @return The elements corresponding to the template type as a range object suitable * for C++11 range based for loops. Will include deleted faces. */ template typename ElementRange::Range all_elements() const; typedef CirculatorRange> ConstVertexVertexRange; typedef CirculatorRange> ConstVertexIHalfedgeRange; typedef CirculatorRange> ConstVertexOHalfedgeRange; typedef CirculatorRange> ConstVertexEdgeRange; typedef CirculatorRange> ConstVertexFaceRange; typedef CirculatorRange> ConstFaceVertexRange; typedef CirculatorRange> ConstFaceHalfedgeRange; typedef CirculatorRange> ConstFaceEdgeRange; typedef CirculatorRange> ConstFaceFaceRange; /** * @return The vertices adjacent to the specified vertex * as a range object suitable for C++11 range based for loops. */ ConstVertexVertexRange vv_range(VertexHandle _vh) const; /** * @return The incoming halfedges incident to the specified vertex * as a range object suitable for C++11 range based for loops. */ ConstVertexIHalfedgeRange vih_range(VertexHandle _vh) const; /** * @return The outgoing halfedges incident to the specified vertex * as a range object suitable for C++11 range based for loops. */ ConstVertexOHalfedgeRange voh_range(VertexHandle _vh) const; /** * @return The edges incident to the specified vertex * as a range object suitable for C++11 range based for loops. */ ConstVertexEdgeRange ve_range(VertexHandle _vh) const ; /** * @return The faces incident to the specified vertex * as a range object suitable for C++11 range based for loops. */ ConstVertexFaceRange vf_range(VertexHandle _vh) const; /** * @return The vertices incident to the specified face * as a range object suitable for C++11 range based for loops. */ ConstFaceVertexRange fv_range(FaceHandle _fh) const; /** * @return The halfedges incident to the specified face * as a range object suitable for C++11 range based for loops. */ ConstFaceHalfedgeRange fh_range(FaceHandle _fh) const; /** * @return The edges incident to the specified face * as a range object suitable for C++11 range based for loops. */ ConstFaceEdgeRange fe_range(FaceHandle _fh) const; /** * @return The faces adjacent to the specified face * as a range object suitable for C++11 range based for loops. */ ConstFaceFaceRange ff_range(FaceHandle _fh) const; //@} //=========================================================================== /** @name Boundary and manifold tests * @{ */ //=========================================================================== /** \brief Check if the halfedge is at the boundary * * The halfedge is at the boundary, if no face is incident to it. * * @param _heh HalfedgeHandle to test * @return boundary? */ bool is_boundary(HalfedgeHandle _heh) const { return ArrayKernel::is_boundary(_heh); } /** \brief Is the edge a boundary edge? * * Checks it the edge _eh is a boundary edge, i.e. is one of its halfedges * a boundary halfedge. * * @param _eh Edge handle to test * @return boundary? */ bool is_boundary(EdgeHandle _eh) const { return (is_boundary(halfedge_handle(_eh, 0)) || is_boundary(halfedge_handle(_eh, 1))); } /** \brief Is vertex _vh a boundary vertex ? * * Checks if the associated halfedge (which would on a boundary be the outside * halfedge), is connected to a face. Which is equivalent, if the vertex is * at the boundary of the mesh, as OpenMesh will make sure, that if there is a * boundary halfedge at the vertex, the halfedge will be the one which is associated * to the vertex. * * @param _vh VertexHandle to test * @return boundary? */ bool is_boundary(VertexHandle _vh) const { HalfedgeHandle heh(halfedge_handle(_vh)); return (!(heh.is_valid() && face_handle(heh).is_valid())); } /** \brief Check if face is at the boundary * * Is face _fh at boundary, i.e. is one of its edges (or vertices) * a boundary edge? * * @param _fh Check this face * @param _check_vertex If \c true, check the corner vertices of the face, too. * @return boundary? */ bool is_boundary(FaceHandle _fh, bool _check_vertex=false) const; /** \brief Is (the mesh at) vertex _vh two-manifold ? * * The vertex is non-manifold if more than one gap exists, i.e. * more than one outgoing boundary halfedge. If (at least) one * boundary halfedge exists, the vertex' halfedge must be a * boundary halfedge. * * @param _vh VertexHandle to test * @return manifold? */ bool is_manifold(VertexHandle _vh) const; /** @} */ // --- misc --- /** Adjust outgoing halfedge handle for vertices, so that it is a boundary halfedge whenever possible. */ void adjust_outgoing_halfedge(VertexHandle _vh); /// Find halfedge from _vh0 to _vh1. Returns invalid handle if not found. SmartHalfedgeHandle find_halfedge(VertexHandle _start_vh, VertexHandle _end_vh) const; /// Vertex valence uint valence(VertexHandle _vh) const; /// Face valence uint valence(FaceHandle _fh) const; // --- connectivity operattions /** Halfedge collapse: collapse the from-vertex of halfedge _heh into its to-vertex. \attention Needs vertex/edge/face status attribute in order to delete the items that degenerate. \note The from vertex is marked as deleted while the to vertex will still exist. \note This function does not perform a garbage collection. It only marks degenerate items as deleted. \attention A halfedge collapse may lead to topological inconsistencies. Therefore you should check this using is_collapse_ok(). */ void collapse(HalfedgeHandle _heh); /** return true if the this the only link between the faces adjacent to _eh. _eh is allowed to be boundary, in which case true is returned iff _eh is the only boundary edge of its ajdacent face. */ bool is_simple_link(EdgeHandle _eh) const; /** return true if _fh shares only one edge with all of its adjacent faces. Boundary is treated as one face, i.e., the function false if _fh has more than one boundary edge. */ bool is_simply_connected(FaceHandle _fh) const; /** Removes the edge _eh. Its adjacent faces are merged. _eh and one of the adjacent faces are set deleted. The handle of the remaining face is returned (InvalidFaceHandle is returned if _eh is a boundary edge). \pre is_simple_link(_eh). This ensures that there are no hole faces or isolated vertices appearing in result of the operation. \attention Needs the Attributes::Status attribute for edges and faces. \note This function does not perform a garbage collection. It only marks items as deleted. */ FaceHandle remove_edge(EdgeHandle _eh); /** Inverse of remove_edge. _eh should be the handle of the edge and the vertex and halfedge handles pointed by edge(_eh) should be valid. */ void reinsert_edge(EdgeHandle _eh); /** Inserts an edge between to_vh(_prev_heh) and from_vh(_next_heh). A new face is created started at heh0 of the inserted edge and its halfedges loop includes both _prev_heh and _next_heh. If an old face existed which includes the argument halfedges, it is split at the new edge. heh0 is returned. \note assumes _prev_heh and _next_heh are either boundary or pointed to the same face */ HalfedgeHandle insert_edge(HalfedgeHandle _prev_heh, HalfedgeHandle _next_heh); /** \brief Face split (= 1-to-n split). * * Split an arbitrary face into triangles by connecting each vertex of fh to vh. * * \note fh will remain valid (it will become one of the triangles) * \note the halfedge handles of the new triangles will point to the old halfeges * * \note The properties of the new faces and all other new primitives will be undefined! * * @param _fh Face handle that should be splitted * @param _vh Vertex handle of the new vertex that will be inserted in the face */ void split(FaceHandle _fh, VertexHandle _vh); /** \brief Face split (= 1-to-n split). * * Split an arbitrary face into triangles by connecting each vertex of fh to vh. * * \note fh will remain valid (it will become one of the triangles) * \note the halfedge handles of the new triangles will point to the old halfeges * * \note The properties of the new faces will be adjusted to the properties of the original faces * \note Properties of the new edges and halfedges will be undefined * * @param _fh Face handle that should be splitted * @param _vh Vertex handle of the new vertex that will be inserted in the face */ void split_copy(FaceHandle _fh, VertexHandle _vh); /** \brief Triangulate the face _fh Split an arbitrary face into triangles by connecting each vertex of fh after its second to vh. \note _fh will remain valid (it will become one of the triangles) \note The halfedge handles of the new triangles will point to the old halfedges @param _fh Handle of the face that should be triangulated */ void triangulate(FaceHandle _fh); /** \brief triangulate the entire mesh */ void triangulate(); /** Edge split (inserts a vertex on the edge only) * * This edge split only splits the edge without introducing new faces! * As this is for polygonal meshes, we can have valence 2 vertices here. * * \note The properties of the new edges and halfedges will be undefined! * * @param _eh Handle of the edge, that will be splitted * @param _vh Handle of the vertex that will be inserted at the edge */ void split_edge(EdgeHandle _eh, VertexHandle _vh); /** Edge split (inserts a vertex on the edge only) * * This edge split only splits the edge without introducing new faces! * As this is for polygonal meshes, we can have valence 2 vertices here. * * \note The properties of the new edge will be copied from the splitted edge * \note Properties of the new halfedges will be undefined * * @param _eh Handle of the edge, that will be splitted * @param _vh Handle of the vertex that will be inserted at the edge */ void split_edge_copy(EdgeHandle _eh, VertexHandle _vh); /** \name Generic handle derefertiation. Calls the respective vertex(), halfedge(), edge(), face() method of the mesh kernel. */ //@{ /// Get item from handle const Vertex& deref(VertexHandle _h) const { return vertex(_h); } Vertex& deref(VertexHandle _h) { return vertex(_h); } const Halfedge& deref(HalfedgeHandle _h) const { return halfedge(_h); } Halfedge& deref(HalfedgeHandle _h) { return halfedge(_h); } const Edge& deref(EdgeHandle _h) const { return edge(_h); } Edge& deref(EdgeHandle _h) { return edge(_h); } const Face& deref(FaceHandle _h) const { return face(_h); } Face& deref(FaceHandle _h) { return face(_h); } //@} protected: /// Helper for halfedge collapse void collapse_edge(HalfedgeHandle _hh); /// Helper for halfedge collapse void collapse_loop(HalfedgeHandle _hh); private: // Working storage for add_face() struct AddFaceEdgeInfo { HalfedgeHandle halfedge_handle; bool is_new; bool needs_adjust; }; std::vector edgeData_; // std::vector > next_cache_; // cache for set_next_halfedge and vertex' set_halfedge }; template <> struct PolyConnectivity::ElementRange { using Range = ConstVertexRange; using RangeSkipping = ConstVertexRangeSkipping; }; template <> struct PolyConnectivity::ElementRange { using Range = ConstHalfedgeRange; using RangeSkipping = ConstHalfedgeRangeSkipping; }; template <> struct PolyConnectivity::ElementRange { using Range = ConstEdgeRange; using RangeSkipping = ConstEdgeRangeSkipping; }; template <> struct PolyConnectivity::ElementRange { using Range = ConstFaceRange; using RangeSkipping = ConstFaceRangeSkipping; }; }//namespace OpenMesh #include #endif//OPENMESH_POLYCONNECTIVITY_HH