netgen/libsrc/geom2d/geometry2d.hpp

#ifndef FILE_GEOMETRY2D
#define FILE_GEOMETRY2D

/* *************************************************************************/
/* File:   geometry2d.hpp                                                  */
/* Author: Joachim Schoeberl                                               */
/* Date:   20. Jul. 02                                                     */
/* *************************************************************************/

#include <myadt.hpp>
#include <gprim.hpp>
#include <meshing.hpp>


// #include "../gprim/spline.hpp"
// #include "../gprim/splinegeometry.hpp"

namespace netgen
{

  class SplineSegExt : public SplineSeg<2>
  {
  public:
    SplineSeg<2>* seg;
    
    /// left domain
    int leftdom;
    /// right domain
    int rightdom;
    /// refinement at line
    double reffak;
    /// maximal h;
    double hmax;
    /// boundary condition number
    int bc;
    /// copy spline mesh from other spline (-1.. do not copy)
    int copyfrom;
    /// perform anisotropic refinement (hp-refinement) to edge
    double hpref_left;
    /// perform anisotropic refinement (hp-refinement) to edge
    double hpref_right;
    ///
    int layer;

    SplineSegExt (SplineSeg<2> & hseg)
      : seg(&hseg)
    {
      layer = 1;
    }
    // default constructor for archive
    SplineSegExt() {}

    ~SplineSegExt ()
    {
      delete seg;
    }

    virtual void DoArchive(Archive& ar)
    {
      ar & seg & leftdom & rightdom & reffak & hmax & bc & copyfrom
        & hpref_left & hpref_right & layer;
    }
    
    virtual const GeomPoint<2> & StartPI () const 
    { 
      return seg->StartPI();
    }

    virtual const GeomPoint<2> & EndPI () const 
    {
      return seg->EndPI();
    }

    virtual Point<2> GetPoint (double t) const 
    {
      return seg->GetPoint(t);
    }

    virtual Vec<2> GetTangent (const double t) const
    {
      return seg->GetTangent(t);
    }

    virtual void GetDerivatives (const double t,  
				 Point<2> & point,
				 Vec<2> & first,
				 Vec<2> & second) const
    {
      seg->GetDerivatives (t, point, first, second);
    }

    virtual void GetCoeff (Vector & coeffs) const 
    {
      seg->GetCoeff (coeffs);
    }

    virtual void GetPoints (int n, NgArray<Point<2> > & points) const
    {
      seg->GetPoints (n, points);
    }

    virtual double MaxCurvature () const 
    {
      return seg->MaxCurvature();
    }

    virtual string GetType () const
    {
      return seg->GetType();
    }

    virtual double CalcCurvature (double t) const
    {
      Point<2> point;
      Vec<2> first, second;
      GetDerivatives (t, point, first, second);
      double curv = fabs(first(0)*second(1)-first(1)*second(0)) / pow(first.Length(), 3);
      return curv;
    }

    virtual bool InConvexHull (Point<2> p, double eps) const
    {
      return seg->InConvexHull (p, eps);
    }

  };




  class SplineGeometry2d : public SplineGeometry<2>, public NetgenGeometry
  {
  protected:
    NgArray<char*> materials;
    NgArray<double> maxh;
    NgArray<bool> quadmeshing;
    Array<bool> tensormeshing;
    NgArray<int> layer;
    NgArray<string*> bcnames;
    double elto0 = 1.0;


  public:
    DLL_HEADER virtual ~SplineGeometry2d();

    DLL_HEADER void Load (const char * filename);

    DLL_HEADER void LoadData( ifstream & infile );
    DLL_HEADER void LoadDataNew ( ifstream & infile );
    DLL_HEADER void LoadDataV2 ( ifstream & infile );

    void TestComment ( ifstream & infile ) ;

    void DoArchive(Archive& ar) override
    {
      SplineGeometry<2>::DoArchive(ar);
      ar & materials & maxh & quadmeshing & tensormeshing & layer & bcnames & elto0;
    }

    bool ProjectPointGI (int surfind, Point<3> & p, PointGeomInfo & gi) const override
    {
      p(2) = 0.0;
      return true;
    }

    void PointBetween(const Point<3> & p1, const Point<3> & p2, double secpoint,
                      int surfi,
                      const PointGeomInfo & gi1,
                      const PointGeomInfo & gi2,
                      Point<3> & newp, PointGeomInfo & newgi) const override
    {
      newp = p1+secpoint*(p2-p1);
      newgi.trignum = 1;
    }

    void PointBetweenEdge(const Point<3> & p1, const Point<3> & p2, double secpoint,
                          int surfi1, int surfi2,
                          const EdgePointGeomInfo & ap1,
                          const EdgePointGeomInfo & ap2,
                          Point<3> & newp, EdgePointGeomInfo & newgi) const override;


    Vec<3> GetTangent (const Point<3> & p, int surfi1, int surfi2,
                       const EdgePointGeomInfo & ap1) const override;
    Vec<3> GetNormal(int surfi1, const Point<3> & p,
                     const PointGeomInfo* gi) const override;

    const SplineSegExt & GetSpline (const int i) const 
    { 
      return dynamic_cast<const SplineSegExt&> (*splines[i]);
    }

    SplineSegExt & GetSpline (const int i) 
    { 
      return dynamic_cast<SplineSegExt&> (*splines[i]);
    }

    
    DLL_HEADER int GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam) override;
    
    void PartitionBoundary (MeshingParameters & mp, double h, Mesh & mesh2d);

    void CopyEdgeMesh (int from, int to, Mesh & mesh2d, Point3dTree & searchtree);


    size_t GetNDomains() const { return materials.Size(); }
    DLL_HEADER void GetMaterial (int  domnr, char* & material );
    DLL_HEADER void SetMaterial (int  domnr, const string & material);

    double GetDomainMaxh ( const int domnr );
    void SetDomainMaxh ( const int domnr, double maxh );
    
    bool GetDomainQuadMeshing ( int domnr ) 
    { 
      if ( quadmeshing.Size() ) return quadmeshing[domnr-1]; 
      else return false;
    }
    void SetDomainQuadMeshing ( int domnr, bool quad_meshing )
    {
      auto oldsize = quadmeshing.Size();

      if ( oldsize<domnr )
        {
          quadmeshing.SetSize(domnr);
          for(auto dom : IntRange(oldsize, domnr-1))
              quadmeshing[dom] = false;
        }

      quadmeshing[domnr-1] = quad_meshing;
    }

    bool GetDomainTensorMeshing ( int domnr ) 
    { 
      if ( tensormeshing.Size()>=domnr ) return tensormeshing[domnr-1];
      else return false;
    }
    void SetDomainTensorMeshing ( int domnr, bool tm )
    {
      if ( tensormeshing.Size()<domnr )
      {
        auto oldsize = tensormeshing.Size();
        tensormeshing.SetSize(domnr);
        for(auto i : IntRange(oldsize, domnr-1))
          tensormeshing[i] = false;
      }
      tensormeshing[domnr-1] = tm;
    }
    int GetDomainLayer ( int domnr ) 
    { 
      if ( layer.Size() ) return layer[domnr-1]; 
      else return 1;
    }


    string GetBCName (int bcnr) const;
    void SetBCName (int bcnr, string name);
    int GetBCNumber (string name) const; // 0 if not exists
    int AddBCName (string name);

    string * BCNamePtr ( const int bcnr );
  };
}







#endif