120ca87015
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
109 lines
4.1 KiB
C++
109 lines
4.1 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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namespace Wm4
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{
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//----------------------------------------------------------------------------
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template <class Real>
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Query2TInteger<Real>::Query2TInteger (int iVQuantity,
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const Vector2<Real>* akVertex)
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:
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Query2<Real>(iVQuantity,akVertex)
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{
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}
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//----------------------------------------------------------------------------
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template <class Real>
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Query::Type Query2TInteger<Real>::GetType () const
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{
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return Query::QT_INTEGER;
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}
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//----------------------------------------------------------------------------
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template <class Real>
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int Query2TInteger<Real>::ToLine (const Vector2<Real>& rkP, int iV0, int iV1)
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const
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{
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const Vector2<Real>& rkV0 = m_akVertex[iV0];
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const Vector2<Real>& rkV1 = m_akVertex[iV1];
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TInteger<2> kX0((int)rkP[0] - (int)rkV0[0]);
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TInteger<2> kY0((int)rkP[1] - (int)rkV0[1]);
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TInteger<2> kX1((int)rkV1[0] - (int)rkV0[0]);
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TInteger<2> kY1((int)rkV1[1] - (int)rkV0[1]);
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TInteger<2> kDet2 = Det2(kX0,kY0,kX1,kY1);
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return (kDet2 > 0 ? +1 : (kDet2 < 0 ? -1 : 0));
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}
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//----------------------------------------------------------------------------
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template <class Real>
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int Query2TInteger<Real>::ToCircumcircle (const Vector2<Real>& rkP, int iV0,
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int iV1, int iV2) const
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{
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const Vector2<Real>& rkV0 = m_akVertex[iV0];
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const Vector2<Real>& rkV1 = m_akVertex[iV1];
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const Vector2<Real>& rkV2 = m_akVertex[iV2];
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int aiP[2] = { (int)rkP[0], (int)rkP[1] };
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int aiV0[2] = { (int)rkV0[0], (int)rkV0[1] };
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int aiV1[2] = { (int)rkV1[0], (int)rkV1[1] };
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int aiV2[2] = { (int)rkV2[0], (int)rkV2[1] };
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TInteger<4> kS0x(aiV0[0] + aiP[0]);
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TInteger<4> kD0x(aiV0[0] - aiP[0]);
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TInteger<4> kS0y(aiV0[1] + aiP[1]);
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TInteger<4> kD0y(aiV0[1] - aiP[1]);
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TInteger<4> kS1x(aiV1[0] + aiP[0]);
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TInteger<4> kD1x(aiV1[0] - aiP[0]);
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TInteger<4> kS1y(aiV1[1] + aiP[1]);
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TInteger<4> kD1y(aiV1[1] - aiP[1]);
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TInteger<4> kS2x(aiV2[0] + aiP[0]);
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TInteger<4> kD2x(aiV2[0] - aiP[0]);
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TInteger<4> kS2y(aiV2[1] + aiP[1]);
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TInteger<4> kD2y(aiV2[1] - aiP[1]);
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TInteger<4> kZ0 = kS0x*kD0x + kS0y*kD0y;
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TInteger<4> kZ1 = kS1x*kD1x + kS1y*kD1y;
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TInteger<4> kZ2 = kS2x*kD2x + kS2y*kD2y;
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TInteger<4> kDet3 = Det3(kD0x,kD0y,kZ0,kD1x,kD1y,kZ1,kD2x,kD2y,kZ2);
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return (kDet3 < 0 ? 1 : (kDet3 > 0 ? -1 : 0));
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}
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//----------------------------------------------------------------------------
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template <class Real>
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TInteger<2> Query2TInteger<Real>::Dot (TInteger<2>& rkX0, TInteger<2>& rkY0,
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TInteger<2>& rkX1, TInteger<2>& rkY1)
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{
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return rkX0*rkX1 + rkY0*rkY1;
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}
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//----------------------------------------------------------------------------
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template <class Real>
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TInteger<2> Query2TInteger<Real>::Det2 (TInteger<2>& rkX0, TInteger<2>& rkY0,
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TInteger<2>& rkX1, TInteger<2>& rkY1)
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{
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return rkX0*rkY1 - rkX1*rkY0;
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}
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//----------------------------------------------------------------------------
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template <class Real>
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TInteger<4> Query2TInteger<Real>::Det3 (TInteger<4>& rkX0, TInteger<4>& rkY0,
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TInteger<4>& rkZ0, TInteger<4>& rkX1, TInteger<4>& rkY1,
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TInteger<4>& rkZ1, TInteger<4>& rkX2, TInteger<4>& rkY2,
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TInteger<4>& rkZ2)
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{
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TInteger<4> kC00 = rkY1*rkZ2 - rkY2*rkZ1;
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TInteger<4> kC01 = rkY2*rkZ0 - rkY0*rkZ2;
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TInteger<4> kC02 = rkY0*rkZ1 - rkY1*rkZ0;
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return rkX0*kC00 + rkX1*kC01 + rkX2*kC02;
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}
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//----------------------------------------------------------------------------
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} //namespace Wm4
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