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355 lines
12 KiB
C++
355 lines
12 KiB
C++
#ifndef FILE_BASEGEOM
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#define FILE_BASEGEOM
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/**************************************************************************/
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/* File: basegeom.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: 23. Aug. 09 */
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/**************************************************************************/
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struct Tcl_Interp;
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namespace netgen
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{
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struct ShapeProperties
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{
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optional<string> name;
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optional<Vec<4>> col;
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double maxh = 1e99;
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double hpref = 0; // number of hp refinement levels (will be multiplied by factor later)
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int layer = 1;
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optional<bool> quad_dominated;
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void Merge(const ShapeProperties & prop2)
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{
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if (!name && prop2.name) name = prop2.name;
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if (!col && prop2.col) col = prop2.col;
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maxh = min2(maxh, prop2.maxh);
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hpref = max2(hpref, prop2.hpref);
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if(!quad_dominated.has_value()) quad_dominated = prop2.quad_dominated;
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layer = max(layer, prop2.layer);
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}
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string GetName() const { return name ? *name : "default"; }
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Vec<4> GetColor() { return col ? *col : Vec<4>{0., 1., 0., 1.}; }
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void DoArchive(Archive& ar)
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{
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ar & name & col & maxh & hpref & layer;
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}
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};
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class GeometryShape;
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struct ShapeIdentification
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{
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GeometryShape * from;
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GeometryShape * to;
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Transformation<3> trafo;
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Identifications::ID_TYPE type;
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string name = "";
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};
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class DLL_HEADER GeometryShape
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{
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public:
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int nr = -1;
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int layer = 1;
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ShapeProperties properties;
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Array<ShapeIdentification> identifications;
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GeometryShape * primary;
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Transformation<3> primary_to_me;
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virtual ~GeometryShape() {}
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virtual size_t GetHash() const = 0;
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virtual bool IsMappedShape( const GeometryShape & other, const Transformation<3> & trafo, double tolerance ) const;
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};
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class DLL_HEADER GeometryVertex : public GeometryShape
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{
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public:
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virtual Point<3> GetPoint() const = 0;
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virtual bool IsMappedShape( const GeometryShape & other, const Transformation<3> & trafo, double tolerance ) const override;
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};
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class DLL_HEADER GeometryEdge : public GeometryShape
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{
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protected:
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GeometryVertex *start, *end;
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public:
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int domin=-1, domout=-1;
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GeometryEdge( GeometryVertex &start_, GeometryVertex &end_ )
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: start(&start_), end(&end_)
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{}
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virtual const GeometryVertex& GetStartVertex() const { return *start; }
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virtual const GeometryVertex& GetEndVertex() const { return *end; }
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virtual GeometryVertex& GetStartVertex() { return *start; }
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virtual GeometryVertex& GetEndVertex() { return *end; }
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virtual double GetLength() const = 0;
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virtual Point<3> GetCenter() const = 0;
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virtual Point<3> GetPoint(double t) const = 0;
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// Calculate parameter step respecting edges sag value
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virtual double CalcStep(double t, double sag) const = 0;
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virtual void ProjectPoint(Point<3>& p, EdgePointGeomInfo* gi) const = 0;
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virtual void PointBetween(const Point<3>& p1,
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const Point<3>& p2,
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double secpoint,
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const EdgePointGeomInfo& gi1,
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const EdgePointGeomInfo& gi2,
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Point<3>& newp,
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EdgePointGeomInfo& newgi) const
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{
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newp = p1 + secpoint * (p2-p1);
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newgi = gi1;
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ProjectPoint(newp, &newgi);
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}
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virtual Vec<3> GetTangent(double t) const = 0;
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virtual bool IsMappedShape( const GeometryShape & other, const Transformation<3> & trafo, double tolerance ) const override;
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};
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class DLL_HEADER GeometryFace : public GeometryShape
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{
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public:
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Array<GeometryEdge*> edges;
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int domin=-1, domout=-1;
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virtual Point<3> GetCenter() const = 0;
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virtual size_t GetNBoundaries() const = 0;
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virtual Array<Segment> GetBoundary(const Mesh& mesh) const = 0;
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virtual PointGeomInfo Project(Point<3>& p) const = 0;
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// Project point using geo info. Fast if point is close to
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// parametrization in geo info.
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virtual bool ProjectPointGI(Point<3>& p, PointGeomInfo& gi) const =0;
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virtual bool CalcPointGeomInfo(const Point<3>& p, PointGeomInfo& gi) const
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{
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auto pnew = p;
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gi = Project(pnew);
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return (p-pnew).Length() < 1e-10 * GetBoundingBox().Diam() ;
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}
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virtual Point<3> GetPoint(const PointGeomInfo& gi) const = 0;
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virtual void CalcEdgePointGI(const GeometryEdge& edge,
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double t,
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EdgePointGeomInfo& egi) const = 0;
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virtual Box<3> GetBoundingBox() const = 0;
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// Get curvature in point from local coordinates in PointGeomInfo
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virtual double GetCurvature(const PointGeomInfo& gi) const = 0;
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virtual void RestrictH(Mesh& mesh, const MeshingParameters& mparam) const = 0;
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virtual Vec<3> GetNormal(const Point<3>& p, const PointGeomInfo* gi = nullptr) const = 0;
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virtual void PointBetween(const Point<3>& p1,
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const Point<3>& p2,
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double secpoint,
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const PointGeomInfo& gi1,
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const PointGeomInfo& gi2,
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Point<3>& newp,
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PointGeomInfo& newgi) const
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{
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newp = p1 + secpoint * (p2-p1);
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newgi.trignum = gi1.trignum;
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newgi.u = 0.5 * (gi1.u + gi1.u);
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newgi.v = 0.5 * (gi1.v + gi2.v);
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if(!ProjectPointGI(newp, newgi))
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newgi = Project(newp);
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}
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virtual bool IsMappedShape( const GeometryShape & other, const Transformation<3> & trafo, double tolerance ) const override;
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protected:
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void RestrictHTrig(Mesh& mesh,
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const PointGeomInfo& gi0,
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const PointGeomInfo& gi1,
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const PointGeomInfo& gi2,
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const MeshingParameters& mparam,
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int depth = 0, double h = 0.) const;
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};
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class DLL_HEADER GeometrySolid : public GeometryShape
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{ };
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class DLL_HEADER NetgenGeometry
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{
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unique_ptr<Refinement> ref;
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protected:
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Array<unique_ptr<GeometryVertex>> vertices;
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Array<unique_ptr<GeometryEdge>> edges;
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Array<unique_ptr<GeometryFace>> faces;
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Array<unique_ptr<GeometrySolid>> solids;
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Array<std::pair<Point<3>, double>> restricted_h;
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Box<3> bounding_box;
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int dimension = 3;
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std::map<size_t, GeometryVertex*> vertex_map;
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std::map<size_t, GeometryEdge*> edge_map;
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std::map<size_t, GeometryFace*> face_map;
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std::map<size_t, GeometrySolid*> solid_map;
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public:
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NetgenGeometry()
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{
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ref = make_unique<Refinement>(*this);
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}
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virtual ~NetgenGeometry () { ; }
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size_t GetNVertices() const { return vertices.Size(); }
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size_t GetNEdges() const { return edges.Size(); }
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size_t GetNFaces() const { return faces.Size(); }
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const GeometryFace & GetFace(int i) const { return *faces[i]; }
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const GeometryEdge & GetEdge(int i) const { return *edges[i]; }
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const GeometryVertex & GetVertex(int i) const { return *vertices[i]; }
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virtual Array<GeometryVertex*> GetFaceVertices(const GeometryFace& face) const { return Array<GeometryVertex*>{}; }
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void Clear();
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virtual int GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam);
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void RestrictH(const Point<3>& pnt, double maxh)
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{
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restricted_h.Append({pnt, maxh});
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}
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virtual const Refinement & GetRefinement () const
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{
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return *ref;
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}
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virtual void DoArchive(Archive&)
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{ throw NgException("DoArchive not implemented for " + Demangle(typeid(*this).name())); }
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virtual Mesh::GEOM_TYPE GetGeomType() const { return Mesh::NO_GEOM; }
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virtual void ProcessIdentifications();
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virtual void Analyse(Mesh& mesh,
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const MeshingParameters& mparam) const;
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virtual void FindEdges(Mesh& mesh, const MeshingParameters& mparam) const;
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virtual void MeshSurface(Mesh& mesh, const MeshingParameters& mparam) const;
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virtual bool MeshFace(Mesh& mesh, const MeshingParameters& mparam,
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int nr, FlatArray<int, PointIndex> glob2loc) const;
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virtual void MapSurfaceMesh( Mesh & mesh, const GeometryFace & dst ) const;
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virtual void OptimizeSurface(Mesh& mesh, const MeshingParameters& mparam) const;
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virtual void FinalizeMesh(Mesh& mesh) const;
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virtual PointGeomInfo ProjectPoint (int surfind, Point<3> & p) const
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{
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if(surfind <= faces.Size() && surfind > 0)
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return faces[surfind-1]->Project(p);
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return PointGeomInfo();
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}
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virtual void ProjectPointEdge (int surfind, int surfind2, Point<3> & p, EdgePointGeomInfo* gi = nullptr) const
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{
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if(gi && gi->edgenr < edges.Size())
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edges[gi->edgenr]->ProjectPoint(p, gi);
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}
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virtual bool CalcPointGeomInfo(int surfind, PointGeomInfo& gi, const Point<3> & p3) const
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{
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return faces[surfind-1]->CalcPointGeomInfo(p3, gi);
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}
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virtual bool ProjectPointGI (int surfind, Point<3> & p, PointGeomInfo & gi) const
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{
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if(surfind > 0 && surfind <= faces.Size())
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return faces[surfind-1]->ProjectPointGI(p, gi);
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return false;
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}
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virtual Vec<3> GetNormal(int surfind, const Point<3> & p, const PointGeomInfo* gi = nullptr) const
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{
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if(surfind > 0 && surfind <= faces.Size())
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return faces[surfind-1]->GetNormal(p, gi);
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else
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return {0., 0., 0.};
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}
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virtual void PointBetween (const Point<3> & p1,
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const Point<3> & p2, double secpoint,
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int surfi,
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const PointGeomInfo & gi1,
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const PointGeomInfo & gi2,
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Point<3> & newp,
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PointGeomInfo & newgi) const
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{
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if(faces.Size() >= surfi && surfi > 0)
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{
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faces[surfi-1]->PointBetween(p1, p2, secpoint, gi1, gi2, newp, newgi);
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return;
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}
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newp = p1 + secpoint * (p2-p1);
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}
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virtual void PointBetweenEdge(const Point<3> & p1,
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const Point<3> & p2, double secpoint,
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int surfi1, int surfi2,
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const EdgePointGeomInfo & ap1,
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const EdgePointGeomInfo & ap2,
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Point<3> & newp,
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EdgePointGeomInfo & newgi) const
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{
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if(ap1.edgenr < edges.Size() && ap1.edgenr >= 0)
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{
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edges[ap1.edgenr]->PointBetween(p1, p2, secpoint,
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ap1, ap2, newp, newgi);
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return;
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}
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newp = p1+secpoint*(p2-p1);
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}
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virtual Vec<3> GetTangent(const Point<3> & p, int surfi1,
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int surfi2,
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const EdgePointGeomInfo & egi) const
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{
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throw Exception("Base geometry get tangent called");
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}
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virtual size_t GetEdgeIndex(const GeometryEdge& edge) const
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{
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for(auto i : Range(edges))
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if(edge.GetHash() == edges[i]->GetHash())
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return i;
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throw Exception("Couldn't find edge index");
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}
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virtual void Save (const filesystem::path & filename) const;
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virtual void SaveToMeshFile (ostream & /* ost */) const { ; }
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};
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class DLL_HEADER GeometryRegister
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{
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public:
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virtual ~GeometryRegister();
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virtual NetgenGeometry * Load (const filesystem::path & filename) const = 0;
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virtual NetgenGeometry * LoadFromMeshFile (istream & /* ist */, string) const { return NULL; }
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virtual class VisualScene * GetVisualScene (const NetgenGeometry * /* geom */) const
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{ return NULL; }
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virtual void SetParameters (Tcl_Interp * /* interp */) { ; }
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};
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class DLL_HEADER GeometryRegisterArray : public NgArray<GeometryRegister*>
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{
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public:
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virtual ~GeometryRegisterArray()
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{
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for (int i = 0; i < Size(); i++)
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delete (*this)[i];
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}
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virtual shared_ptr<NetgenGeometry> LoadFromMeshFile (istream & ist) const;
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};
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// extern DLL_HEADER NgArray<GeometryRegister*> geometryregister;
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extern DLL_HEADER GeometryRegisterArray geometryregister;
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}
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#endif
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