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ElmerCSC
GitHub Repository: ElmerCSC/elmerfem
 Path: blob/devel/ElmerGUI/netgen/libsrc/csg/explicitcurve2d.hpp
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#ifndef FILE_EXPLICITCURVE2D

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#define FILE_EXPLICITCURVE2D

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/**************************************************************************/

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/* File:   explicitcurve2d.hh                                             */

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/* Author: Joachim Schoeberl                                              */

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/* Date:   14. Oct. 96                                                    */

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/**************************************************************************/

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/*

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  Explicit 2D Curve repesentation

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*/

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///

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class ExplicitCurve2d : public Curve2d

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{

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public:

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  ///

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  ExplicitCurve2d ();

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  ///

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  virtual void Project (Point<2> & p) const;

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  ///

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  virtual double ProjectParam (const Point<2> & p) const = 0;

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  ///

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  virtual double NumericalProjectParam (const Point<2> & p, double lb, double ub) const;

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  ///

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  virtual double MinParam () const = 0;

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  ///

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  virtual double MaxParam () const = 0;

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  ///

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  virtual Point<2> Eval (double t) const = 0;

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  ///

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  virtual Vec<2> EvalPrime (double t) const = 0;

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  ///

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  virtual Vec<2> Normal (double t) const;

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  ///

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  virtual void NormalVector (const Point<2> & p, Vec<2> & n) const;

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  ///

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  virtual Vec<2> EvalPrimePrime (double t) const = 0;

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  ///

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  virtual double MaxCurvature () const;

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  ///

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  virtual double MaxCurvatureLoc (const Point<2> & p, double rad) const;

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  ///

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  virtual Point<2> CurvCircle (double t) const;

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  ///

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  virtual void Print (ostream & /* str */) const { };

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  ///

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  virtual int SectionUsed (double /* t */) const { return 1; }

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  ///

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  virtual void Reduce (const Point<2> & /* p */, double /* rad */) { };

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  ///

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  virtual void UnReduce () { };

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}; 

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///

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class BSplineCurve2d : public ExplicitCurve2d

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{

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  ///

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  ARRAY<Point<2> > points;

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  ///

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  ARRAY<int> intervallused;

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  ///

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  int redlevel;

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public:

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  ///

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  BSplineCurve2d ();

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  ///

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  void AddPoint (const Point<2> & apoint);

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  bool Inside (const Point<2> & p, double & dist) const;

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  ///

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  virtual double ProjectParam (const Point<2> & p) const;

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  ///

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  virtual double MinParam () const { return 0; }

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  ///

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  virtual double MaxParam () const { return points.Size(); }

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  ///

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  virtual Point<2> Eval (double t) const;

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  ///

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  virtual Vec<2> EvalPrime (double t) const;  

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  ///

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  virtual Vec<2> EvalPrimePrime (double t) const;

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  ///

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  virtual void Print (ostream & str) const;

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  ///

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  virtual int SectionUsed (double t) const;

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  ///

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  virtual void Reduce (const Point<2> & p, double rad);

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  ///

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  virtual void UnReduce ();

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};  

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#endif

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