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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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// JCV 08/01/90 Modifs suite a l'introduction des classes XY et Mat2d dans gp
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#include <gp_Ax2d.hxx>
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#include <gp_Dir2d.hxx>
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#include <gp_Trsf2d.hxx>
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#include <gp_Vec2d.hxx>
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#include <gp_XY.hxx>
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#include <Standard_ConstructionError.hxx>
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#include <Standard_DomainError.hxx>
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#include <Standard_OutOfRange.hxx>
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Standard_Real gp_Dir2d::Angle (const gp_Dir2d& Other) const
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{
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// Commentaires :
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// Au dessus de 45 degres l'arccos donne la meilleur precision pour le
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// calcul de l'angle. Sinon il vaut mieux utiliser l'arcsin.
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// Les erreurs commises sont loin d'etre negligeables lorsque l'on est
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// proche de zero ou de 90 degres.
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// En 2D les valeurs angulaires sont comprises entre -PI et PI
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Standard_Real Cosinus = coord.Dot (Other.coord);
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Standard_Real Sinus = coord.Crossed (Other.coord);
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if (Cosinus > -0.70710678118655 && Cosinus < 0.70710678118655) {
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if (Sinus > 0.0) return acos (Cosinus);
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else return - acos (Cosinus);
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}
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else {
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if (Cosinus > 0.0) return asin (Sinus);
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else {
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if (Sinus > 0.0) return M_PI - asin (Sinus);
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else return -M_PI - asin (Sinus);
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}
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}
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}
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void gp_Dir2d::Mirror (const gp_Ax2d& A2)
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{
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const gp_XY& XY = A2.Direction().XY();
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Standard_Real A = XY.X();
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Standard_Real B = XY.Y();
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Standard_Real X = coord.X();
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Standard_Real Y = coord.Y();
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Standard_Real M1 = 2.0 * A * B;
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Standard_Real XX = ((2.0 * A * A) - 1.0) * X + M1 * Y;
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Standard_Real YY = M1 * X + ((2.0 * B * B) - 1.0) * Y;
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coord.SetCoord(XX,YY);
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}
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void gp_Dir2d::Transform (const gp_Trsf2d& T)
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{
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if (T.Form() == gp_Identity || T.Form() == gp_Translation) { }
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else if (T.Form() == gp_PntMirror) { coord.Reverse(); }
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else if (T.Form() == gp_Scale) {
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if (T.ScaleFactor() < 0.0) { coord.Reverse(); }
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}
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else {
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coord.Multiply (T.HVectorialPart());
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Standard_Real D = coord.Modulus();
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coord.Divide(D);
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if (T.ScaleFactor() < 0.0) { coord.Reverse(); }
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}
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}
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void gp_Dir2d::Mirror (const gp_Dir2d& V)
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{
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const gp_XY& XY = V.coord;
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Standard_Real A = XY.X();
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Standard_Real B = XY.Y();
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Standard_Real X = coord.X();
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Standard_Real Y = coord.Y();
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Standard_Real M1 = 2.0 * A * B;
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Standard_Real XX = ((2.0 * A * A) - 1.0) * X + M1 * Y;
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Standard_Real YY = M1 * X + ((2.0 * B * B) - 1.0) * Y;
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coord.SetCoord(XX,YY);
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}
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gp_Dir2d gp_Dir2d::Mirrored (const gp_Dir2d& V) const
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{
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gp_Dir2d Vres = *this;
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Vres.Mirror (V);
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return Vres;
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}
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gp_Dir2d gp_Dir2d::Mirrored (const gp_Ax2d& A) const
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{
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gp_Dir2d V = *this;
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V.Mirror (A);
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return V;
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}
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