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https://git.salome-platform.org/gitpub/modules/geom.git
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108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
// Copyright (C) 2015-2021 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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#include <GEOMUtils_Trsf2d.hxx>
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//=======================================================================
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//function : Trsf2d
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//purpose :
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//=======================================================================
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GEOMUtils::Trsf2d::Trsf2d(const Standard_Real a11,
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const Standard_Real a12,
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const Standard_Real a13,
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const Standard_Real a21,
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const Standard_Real a22,
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const Standard_Real a23)
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: myA11(a11),
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myA12(a12),
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myA13(a13),
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myA21(a21),
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myA22(a22),
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myA23(a23)
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{
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}
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//=======================================================================
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//function : TransformD0
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//purpose :
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//=======================================================================
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void GEOMUtils::Trsf2d::TransformD0(gp_Pnt2d &thePnt) const
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{
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const Standard_Real aX = myA11*thePnt.X() + myA12*thePnt.Y() + myA13;
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const Standard_Real aY = myA21*thePnt.X() + myA22*thePnt.Y() + myA23;
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thePnt.SetCoord(aX, aY);
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}
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//=======================================================================
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//function : TransformD1
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//purpose :
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//=======================================================================
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void GEOMUtils::Trsf2d::TransformD1(gp_Pnt2d &thePnt,
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gp_Vec2d &theVec1) const
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{
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TransformVector(thePnt, theVec1);
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TransformD0(thePnt);
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}
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//=======================================================================
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//function : TransformD2
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//purpose :
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//=======================================================================
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void GEOMUtils::Trsf2d::TransformD2(gp_Pnt2d &thePnt,
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gp_Vec2d &theVec1,
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gp_Vec2d &theVec2) const
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{
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TransformVector(thePnt, theVec1);
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TransformVector(thePnt, theVec2);
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TransformD0(thePnt);
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}
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//=======================================================================
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//function : TransformD3
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//purpose :
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//=======================================================================
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void GEOMUtils::Trsf2d::TransformD3(gp_Pnt2d &thePnt,
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gp_Vec2d &theVec1,
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gp_Vec2d &theVec2,
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gp_Vec2d &theVec3) const
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{
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TransformVector(thePnt, theVec1);
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TransformVector(thePnt, theVec2);
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TransformVector(thePnt, theVec3);
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TransformD0(thePnt);
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}
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//=======================================================================
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//function : TransformVector
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//purpose :
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//=======================================================================
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void GEOMUtils::Trsf2d::TransformVector(const gp_Pnt2d &thePnt,
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gp_Vec2d &theVec) const
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{
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gp_Pnt2d aP0(thePnt.XY());
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gp_Pnt2d aP1(thePnt.XY().Added(theVec.XY()));
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TransformD0(aP0);
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TransformD0(aP1);
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theVec.SetXY(aP1.XY().Subtracted(aP0.XY()));
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}
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