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9775fa6110
Macro NO_CXX_EXCEPTION was removed from code. Method Raise() was replaced by explicit throw statement. Method Standard_Failure::Caught() was replaced by normal C++mechanism of exception transfer. Method Standard_Failure::Caught() is deprecated now. Eliminated empty constructors. Updated samples. Eliminate empty method ChangeValue from NCollection_Map class. Removed not operable methods from NCollection classes.
134 lines
4.2 KiB
C++
134 lines
4.2 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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#define No_Standard_OutOfRange
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#include <gp.hxx>
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#include <gp_Ax2d.hxx>
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#include <gp_Dir2d.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Trsf2d.hxx>
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#include <gp_Vec2d.hxx>
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#include <gp_VectorWithNullMagnitude.hxx>
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#include <gp_XY.hxx>
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#include <Standard_ConstructionError.hxx>
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#include <Standard_OutOfRange.hxx>
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Standard_Boolean gp_Vec2d::IsEqual
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(const gp_Vec2d& Other,
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const Standard_Real LinearTolerance,
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const Standard_Real AngularTolerance) const
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{
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const Standard_Real theNorm = Magnitude();
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const Standard_Real theOtherNorm = Other.Magnitude();
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Standard_Real val = theNorm - theOtherNorm;
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if (val < 0.0) val = -val;
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// Check for equal lengths
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const Standard_Boolean isEqualLength = (val <= LinearTolerance);
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// Check for small vectors
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if (theNorm > LinearTolerance && theOtherNorm > LinearTolerance)
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{
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Standard_Real Ang = Angle(Other);
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if (Ang < 0.0) Ang = -Ang;
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// Check for zero angle
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return isEqualLength && (Ang <= AngularTolerance);
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}
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return isEqualLength;
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}
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Standard_Real gp_Vec2d::Angle (const gp_Vec2d& 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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const Standard_Real theNorm = Magnitude();
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const Standard_Real theOtherNorm = Other.Magnitude();
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if (theNorm <= gp::Resolution() || theOtherNorm <= gp::Resolution())
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throw gp_VectorWithNullMagnitude();
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const Standard_Real D = theNorm * theOtherNorm;
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const Standard_Real Cosinus = coord.Dot (Other.coord) / D;
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const Standard_Real Sinus = coord.Crossed (Other.coord) / D;
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if (Cosinus > -0.70710678118655 && Cosinus < 0.70710678118655)
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{
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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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{
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if (Cosinus > 0.0) return asin (Sinus);
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else
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{
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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_Vec2d::Mirror (const gp_Ax2d& A1)
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{
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const gp_XY& XY = A1.Direction().XY();
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Standard_Real X = coord.X();
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Standard_Real Y = coord.Y();
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Standard_Real A = XY.X();
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Standard_Real B = XY.Y();
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Standard_Real M1 = 2.0 * A * B;
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coord.SetX(((2.0 * A * A) - 1.) * X + M1 * Y);
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coord.SetY(M1 * X + ((2. * B * B) - 1.0) * Y);
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}
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gp_Vec2d gp_Vec2d::Mirrored (const gp_Ax2d& A1) const
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{
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gp_Vec2d Vres = *this;
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Vres.Mirror(A1);
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return Vres;
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}
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void gp_Vec2d::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) coord.Multiply (T.ScaleFactor ());
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else coord.Multiply (T.VectorialPart ());
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}
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void gp_Vec2d::Mirror (const gp_Vec2d& V)
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{
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const Standard_Real D = V.coord.Modulus();
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if (D > gp::Resolution())
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{
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const gp_XY& XY = V.coord;
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Standard_Real X = XY.X();
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Standard_Real Y = XY.Y();
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Standard_Real A = X / D;
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Standard_Real B = Y / D;
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Standard_Real M1 = 2.0 * A * B;
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coord.SetX(((2.0 * A * A) - 1.0) * X + M1 * Y);
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coord.SetY(M1 * X + ((2.0 * B * B) - 1.0) * Y);
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}
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}
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gp_Vec2d gp_Vec2d::Mirrored (const gp_Vec2d& V) const
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{
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gp_Vec2d Vres = *this;
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Vres.Mirror(V);
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return Vres;
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}
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