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https://github.com/NGSolve/netgen.git
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687 lines
13 KiB
C++
687 lines
13 KiB
C++
#ifndef TOPOLOGY
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#define TOPOLOGY
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/**************************************************************************/
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/* File: topology.hh */
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/* Author: Joachim Schoeberl */
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/* Date: 27. Apr. 01 */
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/**************************************************************************/
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/*
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Mesh topology
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(Elements, Faces, Edges, Vertices
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*/
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namespace netgen
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{
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struct T_EDGE
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{
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int orient:1;
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int nr:31; // 0-based
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};
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struct T_FACE
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{
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int forient:3;
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int fnr:29; // 0-based
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};
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class MeshTopology
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{
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const Mesh & mesh;
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bool buildedges;
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bool buildfaces;
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Array<INDEX_2> edge2vert;
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Array<INDEX_4> face2vert;
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Array<T_EDGE[12]> edges;
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Array<T_FACE[6]> faces;
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Array<T_EDGE[4]> surfedges;
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Array<T_EDGE> segedges;
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Array<T_FACE> surffaces;
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Array<INDEX_2> surf2volelement;
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Array<int> face2surfel;
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TABLE<ElementIndex,PointIndex::BASE> *vert2element;
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TABLE<int,PointIndex::BASE> *vert2surfelement;
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TABLE<int,PointIndex::BASE> *vert2segment;
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int timestamp;
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public:
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int GetNSurfedges() const {return surfedges.Size();}
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MeshTopology (const Mesh & amesh);
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~MeshTopology ();
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void SetBuildEdges (bool be)
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{ buildedges = be; }
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void SetBuildFaces (bool bf)
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{ buildfaces = bf; }
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bool HasEdges () const
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{ return buildedges; }
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bool HasFaces () const
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{ return buildfaces; }
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void Update();
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int GetNEdges () const { return edge2vert.Size(); }
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int GetNFaces () const { return face2vert.Size(); }
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static inline short int GetNVertices (ELEMENT_TYPE et);
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static inline short int GetNPoints (ELEMENT_TYPE et);
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static inline short int GetNEdges (ELEMENT_TYPE et);
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static inline short int GetNFaces (ELEMENT_TYPE et);
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static const Point3d * GetVertices (ELEMENT_TYPE et);
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inline static const ELEMENT_EDGE * GetEdges1 (ELEMENT_TYPE et);
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inline static const ELEMENT_EDGE * GetEdges0 (ELEMENT_TYPE et);
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inline static const ELEMENT_FACE * GetFaces1 (ELEMENT_TYPE et);
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inline static const ELEMENT_FACE * GetFaces0 (ELEMENT_TYPE et);
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int GetSegmentEdge (int segnr) const { return segedges[segnr-1].nr+1; }
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int GetEdge (SegmentIndex segnr) const { return segedges[segnr].nr; }
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void GetSegmentEdge (int segnr, int & enr, int & orient) const
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{
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enr = segedges.Get(segnr).nr+1;
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orient = segedges.Get(segnr).orient;
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}
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void GetElementEdges (int elnr, Array<int> & edges) const;
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void GetElementFaces (int elnr, Array<int> & faces, bool withorientation = false) const;
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void GetElementEdgeOrientations (int elnr, Array<int> & eorient) const;
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void GetElementFaceOrientations (int elnr, Array<int> & forient) const;
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int GetElementEdges (int elnr, int * edges, int * orient) const;
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int GetElementFaces (int elnr, int * faces, int * orient) const;
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void GetFaceVertices (int fnr, Array<int> & vertices) const;
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void GetFaceVertices (int fnr, int * vertices) const;
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void GetEdgeVertices (int enr, int & v1, int & v2) const;
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void GetEdgeVertices (int enr, PointIndex & v1, PointIndex & v2) const;
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const int * GetEdgeVerticesPtr (int enr) const { return &edge2vert[enr][0]; }
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const int * GetFaceVerticesPtr (int fnr) const { return &face2vert[fnr][0]; }
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void GetFaceEdges (int fnr, Array<int> & edges, bool withorientation = false) const;
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ELEMENT_TYPE GetFaceType (int fnr) const;
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void GetSurfaceElementEdges (int elnr, Array<int> & edges) const;
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int GetSurfaceElementFace (int elnr) const;
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void GetSurfaceElementEdgeOrientations (int elnr, Array<int> & eorient) const;
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int GetSurfaceElementFaceOrientation (int elnr) const;
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void GetEdges (SurfaceElementIndex elnr, Array<int> & edges) const;
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int GetFace (SurfaceElementIndex elnr) const;
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int GetSurfaceElementEdges (int elnr, int * edges, int * orient) const;
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const T_EDGE * GetElementEdgesPtr (int elnr) const { return &edges[elnr][0]; }
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const T_EDGE * GetSurfaceElementEdgesPtr (int selnr) const { return &surfedges[selnr][0]; }
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const T_EDGE * GetSegmentElementEdgesPtr (int selnr) const { return &segedges[selnr]; }
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const T_FACE * GetElementFacesPtr (int elnr) const { return &faces[elnr][0]; }
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const T_FACE * GetSurfaceElementFacesPtr (int selnr) const { return &surffaces[selnr]; }
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void GetSurface2VolumeElement (int selnr, int & elnr1, int & elnr2) const
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{
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elnr1 = surf2volelement.Get(selnr)[0];
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elnr2 = surf2volelement.Get(selnr)[1];
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}
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int GetFace2SurfaceElement (int fnr) const { return face2surfel[fnr-1]; }
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void GetVertexElements (int vnr, Array<ElementIndex> & elements) const;
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FlatArray<ElementIndex> GetVertexElements (int vnr) const;
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void GetVertexSurfaceElements( int vnr, Array<int>& elements ) const;
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FlatArray<int> GetVertexSurfaceElements (int vnr) const;
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int GetVerticesEdge ( int v1, int v2) const;
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void GetSegmentVolumeElements ( int segnr, Array<int> & els ) const;
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void GetSegmentSurfaceElements ( int segnr, Array<int> & els ) const;
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};
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inline short int MeshTopology :: GetNVertices (ELEMENT_TYPE et)
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{
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switch (et)
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{
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case SEGMENT:
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case SEGMENT3:
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return 2;
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case TRIG:
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case TRIG6:
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return 3;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return 4;
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case TET:
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case TET10:
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return 4;
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case PYRAMID:
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return 5;
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case PRISM:
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case PRISM12:
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return 6;
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case HEX:
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return 8;
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// default:
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// cerr << "Ng_ME_GetNVertices, illegal element type " << et << endl;
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}
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return 0;
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}
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inline short int MeshTopology :: GetNPoints (ELEMENT_TYPE et)
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{
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switch (et)
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{
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case SEGMENT:
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return 2;
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case SEGMENT3:
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return 3;
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case TRIG:
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return 3;
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case TRIG6:
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return 6;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return 4;
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case TET:
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return 4;
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case TET10:
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return 10;
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case PYRAMID:
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return 5;
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case PRISM:
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case PRISM12:
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return 6;
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case HEX:
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return 8;
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// default:
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// cerr << "Ng_ME_GetNVertices, illegal element type " << et << endl;
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}
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return 0;
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}
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inline short int MeshTopology :: GetNEdges (ELEMENT_TYPE et)
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{
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__assume(et >= SEGMENT && et <= HEX);
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switch (et)
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{
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case SEGMENT:
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case SEGMENT3:
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return 1;
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case TRIG:
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case TRIG6:
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return 3;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return 4;
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case TET:
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case TET10:
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return 6;
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case PYRAMID:
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return 8;
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case PRISM:
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case PRISM12:
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return 9;
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case HEX:
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return 12;
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default:
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return 0;
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// default:
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// cerr << "Ng_ME_GetNEdges, illegal element type " << et << endl;
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}
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// return 0;
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}
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inline short int MeshTopology :: GetNFaces (ELEMENT_TYPE et)
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{
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__assume(et >= SEGMENT && et <= HEX);
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switch (et)
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{
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case SEGMENT:
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case SEGMENT3:
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return 0;
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case TRIG:
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case TRIG6:
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return 1;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return 1;
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case TET:
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case TET10:
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return 4;
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case PYRAMID:
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return 5;
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case PRISM:
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case PRISM12:
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return 5;
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case HEX:
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return 6;
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default:
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return -99;
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// default:
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// cerr << "Ng_ME_GetNVertices, illegal element type " << et << endl;
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}
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}
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const ELEMENT_EDGE * MeshTopology :: GetEdges1 (ELEMENT_TYPE et)
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{
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static int segm_edges[1][2] =
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{ { 1, 2 }};
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static int trig_edges[3][2] =
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{ { 3, 1 },
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{ 2, 3 },
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{ 1, 2 }};
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static int quad_edges[4][2] =
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{ { 1, 2 },
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{ 3, 4 },
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{ 4, 1 },
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{ 2, 3 }};
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static int tet_edges[6][2] =
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{ { 4, 1 },
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{ 4, 2 },
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{ 4, 3 },
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{ 1, 2 },
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{ 1, 3 },
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{ 2, 3 }};
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static int prism_edges[9][2] =
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{ { 3, 1 },
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{ 1, 2 },
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{ 3, 2 },
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{ 6, 4 },
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{ 4, 5 },
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{ 6, 5 },
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{ 3, 6 },
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{ 1, 4 },
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{ 2, 5 }};
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static int pyramid_edges[8][2] =
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{ { 1, 2 },
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{ 2, 3 },
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{ 1, 4 },
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{ 4, 3 },
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{ 1, 5 },
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{ 2, 5 },
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{ 3, 5 },
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{ 4, 5 }};
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static int hex_edges[12][2] =
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{
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{ 1, 2 },
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{ 3, 4 },
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{ 4, 1 },
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{ 2, 3 },
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{ 5, 6 },
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{ 7, 8 },
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{ 8, 5 },
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{ 6, 7 },
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{ 1, 5 },
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{ 2, 6 },
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{ 3, 7 },
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{ 4, 8 },
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};
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switch (et)
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{
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case SEGMENT:
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case SEGMENT3:
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return segm_edges;
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case TRIG:
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case TRIG6:
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return trig_edges;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return quad_edges;
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case TET:
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case TET10:
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return tet_edges;
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case PYRAMID:
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return pyramid_edges;
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case PRISM:
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case PRISM12:
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return prism_edges;
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case HEX:
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return hex_edges;
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// default:
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// cerr << "Ng_ME_GetEdges, illegal element type " << et << endl;
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}
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return 0;
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}
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const ELEMENT_EDGE * MeshTopology :: GetEdges0 (ELEMENT_TYPE et)
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{
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static int segm_edges[1][2] =
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{ { 0, 1 }};
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static int trig_edges[3][2] =
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{ { 2, 0 },
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{ 1, 2 },
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{ 0, 1 }};
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static int quad_edges[4][2] =
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{ { 0, 1 },
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{ 2, 3 },
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{ 3, 0 },
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{ 1, 2 }};
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static int tet_edges[6][2] =
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{ { 3, 0 },
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{ 3, 1 },
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{ 3, 2 },
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{ 0, 1 },
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{ 0, 2 },
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{ 1, 2 }};
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static int prism_edges[9][2] =
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{ { 2, 0 },
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{ 0, 1 },
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{ 2, 1 },
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{ 5, 3 },
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{ 3, 4 },
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{ 5, 4 },
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{ 2, 5 },
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{ 0, 3 },
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{ 1, 4 }};
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static int pyramid_edges[8][2] =
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{ { 0, 1 },
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{ 1, 2 },
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{ 0, 3 },
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{ 3, 2 },
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{ 0, 4 },
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{ 1, 4 },
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{ 2, 4 },
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{ 3, 4 }};
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static int hex_edges[12][2] =
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{
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{ 0, 1 },
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{ 2, 3 },
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{ 3, 0 },
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{ 1, 2 },
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{ 4, 5 },
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{ 6, 7 },
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{ 7, 4 },
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{ 5, 6 },
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{ 0, 4 },
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{ 1, 5 },
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{ 2, 6 },
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{ 3, 7 },
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};
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switch (et)
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{
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case SEGMENT:
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case SEGMENT3:
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return segm_edges;
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case TRIG:
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case TRIG6:
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return trig_edges;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return quad_edges;
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case TET:
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case TET10:
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return tet_edges;
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case PYRAMID:
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return pyramid_edges;
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case PRISM:
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case PRISM12:
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return prism_edges;
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case HEX:
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return hex_edges;
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// default:
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// cerr << "Ng_ME_GetEdges, illegal element type " << et << endl;
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}
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return 0;
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}
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inline const ELEMENT_FACE * MeshTopology :: GetFaces1 (ELEMENT_TYPE et)
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{
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static const int trig_faces[1][4] =
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{ { 1, 2, 3, 0 } };
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static const int quad_faces[1][4] =
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{ { 1, 2, 3, 4 } };
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static const int tet_faces[4][4] =
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{ { 4, 2, 3, 0 },
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{ 4, 3, 1, 0 },
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{ 4, 1, 2, 0 },
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{ 1, 3, 2, 0 } };
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static const int prism_faces[5][4] =
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{
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{ 1, 3, 2, 0 },
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{ 4, 5, 6, 0 },
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{ 3, 1, 4, 6 },
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{ 1, 2, 5, 4 },
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{ 2, 3, 6, 5 }
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};
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static const int pyramid_faces[5][4] =
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{
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{ 1, 2, 5, 0 },
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{ 2, 3, 5, 0 },
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{ 3, 4, 5, 0 },
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{ 4, 1, 5, 0 },
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{ 1, 4, 3, 2 }
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};
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static const int hex_faces[6][4] =
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{
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{ 1, 4, 3, 2 },
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{ 5, 6, 7, 8 },
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{ 1, 2, 6, 5 },
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{ 2, 3, 7, 6 },
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{ 3, 4, 8, 7 },
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{ 4, 1, 5, 8 }
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};
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switch (et)
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{
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case TRIG:
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case TRIG6:
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return trig_faces;
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case QUAD:
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case QUAD6:
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case QUAD8:
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return quad_faces;
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case TET:
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case TET10:
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return tet_faces;
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case PRISM:
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case PRISM12:
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return prism_faces;
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case PYRAMID:
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return pyramid_faces;
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case SEGMENT:
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case SEGMENT3:
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case HEX:
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return hex_faces;
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// default:
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// cerr << "Ng_ME_GetVertices, illegal element type " << et << endl;
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}
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return 0;
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}
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inline const ELEMENT_FACE * MeshTopology :: GetFaces0 (ELEMENT_TYPE et)
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{
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static const int trig_faces[1][4] =
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{ { 0, 1, 2, -1 } };
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static const int quad_faces[1][4] =
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{ { 0, 1, 2, 3 } };
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static const int tet_faces[4][4] =
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{ { 3, 1, 2, -1 },
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|
{ 3, 2, 0, -1 },
|
|
{ 3, 0, 1, -1 },
|
|
{ 0, 2, 1, -1 } };
|
|
|
|
static const int prism_faces[5][4] =
|
|
{
|
|
{ 0, 2, 1, -1 },
|
|
{ 3, 4, 5, -1 },
|
|
{ 2, 0, 3, 5 },
|
|
{ 0, 1, 4, 3 },
|
|
{ 1, 2, 5, 4 }
|
|
};
|
|
|
|
static const int pyramid_faces[5][4] =
|
|
{
|
|
{ 0, 1, 4, -1 },
|
|
{ 1, 2, 4, -1 },
|
|
{ 2, 3, 4, -1 },
|
|
{ 3, 0, 4, -1 },
|
|
{ 0, 3, 2, 1 }
|
|
};
|
|
|
|
static const int hex_faces[6][4] =
|
|
{
|
|
{ 0, 3, 2, 1 },
|
|
{ 4, 5, 6, 7 },
|
|
{ 0, 1, 5, 4 },
|
|
{ 1, 2, 6, 5 },
|
|
{ 2, 3, 7, 6 },
|
|
{ 3, 0, 4, 7 }
|
|
};
|
|
|
|
|
|
|
|
switch (et)
|
|
{
|
|
case TRIG:
|
|
case TRIG6:
|
|
return trig_faces;
|
|
|
|
case QUAD:
|
|
case QUAD6:
|
|
case QUAD8:
|
|
return quad_faces;
|
|
|
|
|
|
case TET:
|
|
case TET10:
|
|
return tet_faces;
|
|
|
|
case PRISM:
|
|
case PRISM12:
|
|
return prism_faces;
|
|
|
|
case PYRAMID:
|
|
return pyramid_faces;
|
|
|
|
case SEGMENT:
|
|
case SEGMENT3:
|
|
|
|
case HEX:
|
|
return hex_faces;
|
|
|
|
// default:
|
|
// cerr << "Ng_ME_GetVertices, illegal element type " << et << endl;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|