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114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
#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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namespace netgen
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{
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/*
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Explicit 2D Curve representation
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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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NgArray<Point<2> > points;
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///
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NgArray<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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}
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#endif
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