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68 lines
1.3 KiB
C++
68 lines
1.3 KiB
C++
#ifndef FILE_CURVE2D
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#define FILE_CURVE2D
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/**************************************************************************/
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/* File: curve2d.hh */
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/* Author: Joachim Schoeberl */
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/* Date: 24. Jul. 96 */
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/**************************************************************************/
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namespace netgen
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{
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/*
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2D Curve repesentation
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*/
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///
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class Curve2d : public Manifold
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{
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public:
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///
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virtual void Project (Point<2> & p) const = 0;
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///
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virtual void NormalVector (const Point<2> & p, Vec<2> & n) const = 0;
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};
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///
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class CircleCurve2d : public Curve2d
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{
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///
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Point<2> center;
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///
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double rad;
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public:
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///
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CircleCurve2d (const Point<2> & acenter, double arad);
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///
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virtual void Project (Point<2> & p) 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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///
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class QuadraticCurve2d : public Curve2d
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{
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///
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double cxx, cyy, cxy, cx, cy, c;
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public:
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///
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QuadraticCurve2d ();
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///
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void Read (istream & ist);
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///
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virtual void Project (Point<2> & p) 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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}
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#endif
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