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17458889aa
Fetch the first (geometry identification) token only once (and not on each try to load a different type)
252 lines
8.5 KiB
C++
252 lines
8.5 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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class GeometryVertex
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{
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public:
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virtual ~GeometryVertex() {}
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virtual Point<3> GetPoint() const = 0;
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virtual size_t GetHash() const = 0;
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};
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class GeometryEdge
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{
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public:
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virtual ~GeometryEdge() {}
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virtual const GeometryVertex& GetStartVertex() const = 0;
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virtual const GeometryVertex& GetEndVertex() const = 0;
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virtual double GetLength() 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 bool OrientedLikeGlobal() const = 0;
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virtual size_t GetHash() 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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};
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class GeometryFace
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{
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public:
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virtual ~GeometryFace() {}
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virtual size_t GetNBoundaries() const = 0;
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virtual Array<unique_ptr<GeometryEdge>> GetBoundary(size_t index) const = 0;
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virtual string GetName() const { return "default"; }
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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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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 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<std::pair<Point<3>, double>> restricted_h;
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Box<3> bounding_box;
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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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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 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 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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return faces[surfind-1]->Project(p);
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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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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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return faces[surfind-1]->ProjectPointGI(p, gi);
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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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{ return faces[surfind-1]->GetNormal(p, gi); }
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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())
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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(edges.Size())
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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 (string 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 (string 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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