120ca87015
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
// Wild Magic Source Code
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// David Eberly
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// http://www.geometrictools.com
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// Copyright (c) 1998-2007
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or (at
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// your option) any later version. The license is available for reading at
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// either of the locations:
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// http://www.gnu.org/copyleft/lgpl.html
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// http://www.geometrictools.com/License/WildMagicLicense.pdf
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// The license applies to versions 0 through 4 of Wild Magic.
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//
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// Version: 4.0.0 (2006/06/28)
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#ifndef WM4QUERY2TRATIONAL_H
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#define WM4QUERY2TRATIONAL_H
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#include "Wm4FoundationLIB.h"
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#include "Wm4Query2.h"
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#include "Wm4RVector2.h"
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namespace Wm4
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{
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template <class Real>
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class Query2TRational : public Query2<Real>
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{
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public:
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// The components of the input vertices are represented exactly as
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// rational values.
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Query2TRational (int iVQuantity, const Vector2<Real>* akVertex);
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virtual ~Query2TRational ();
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// run-time type information
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virtual Query::Type GetType () const;
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// Queries about the relation of a point to various geometric objects.
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virtual int ToLine (int i, int iV0, int iV1) const;
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virtual int ToLine (const Vector2<Real>& rkP, int iV0, int iV1) const;
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virtual int ToTriangle (int i, int iV0, int iV1, int iV2) const;
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virtual int ToTriangle (const Vector2<Real>& rkP, int iV0, int iV1,
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int iV2) const;
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virtual int ToCircumcircle (int i, int iV0, int iV1, int iV2) const;
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virtual int ToCircumcircle (const Vector2<Real>& rkP, int iV0, int iV1,
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int iV2) const;
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private:
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using Query2<Real>::m_iVQuantity;
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using Query2<Real>::m_akVertex;
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// Caching for rational representations of the input. The conversion of
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// floating-point numbers to TRational form is slow, so it is better to
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// keep track of which values have been converted.
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typedef TRational<4*sizeof(Real)> Rational;
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typedef RVector2<4*sizeof(Real)> RVector;
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mutable RVector* m_akRVertex;
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mutable bool* m_abEvaluated;
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void Convert (int iQuantity, int* aiIndex) const;
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int ToLine (const RVector& rkRP, int iV0, int iV1) const;
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int ToTriangle (const RVector& rkRP, int iV0, int iV1, int iV2) const;
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int ToCircumcircle (const RVector& rkRP, int iV0, int iV1, int iV2) const;
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static Rational Dot (Rational& rkX0, Rational& rkY0, Rational& rkX1,
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Rational& rkY1);
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static Rational Det2 (Rational& rkX0, Rational& rkY0, Rational& rkX1,
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Rational& rkY1);
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static Rational Det3 (Rational& rkX0, Rational& rkY0, Rational& rkZ0,
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Rational& rkX1, Rational& rkY1, Rational& rkZ1, Rational& rkX2,
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Rational& rkY2, Rational& rkZ2);
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};
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}
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#include "Wm4Query2TRational.inl"
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namespace Wm4
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{
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typedef Query2TRational<float> Query2TRationalf;
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typedef Query2TRational<double> Query2TRationald;
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}
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#endif
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