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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
59 lines
2.3 KiB
C++
59 lines
2.3 KiB
C++
// Created on: 1994-09-01
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// Created by: Frederic MAUPAS
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// Copyright (c) 1994-1999 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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//:o9 abv 19.02.99: bm4_id_punch_b.stp #678: treatment of ellipse with minR > maxR
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// NOTE: parametrisation of resulting ellipse shifted on pi/2
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#include <StepToGeom_MakeEllipse.ixx>
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#include <StepGeom_Ellipse.hxx>
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#include <StepGeom_Axis2Placement3d.hxx>
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#include <Geom_Axis2Placement.hxx>
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#include <StepToGeom_MakeAxis2Placement.hxx>
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#include <gp_Ax2.hxx>
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#include <UnitsMethods.hxx>
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//=============================================================================
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// Creation d' un Ellipse de Geom a partir d' un Ellipse de Step
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//=============================================================================
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Standard_Boolean StepToGeom_MakeEllipse::Convert
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(const Handle(StepGeom_Ellipse)& SC,
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Handle(Geom_Ellipse)& CC)
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{
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const StepGeom_Axis2Placement AxisSelect = SC->Position();
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if (AxisSelect.CaseNum(AxisSelect.Value()) == 2) {
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Handle(Geom_Axis2Placement) A1;
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if (StepToGeom_MakeAxis2Placement::Convert
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(Handle(StepGeom_Axis2Placement3d)::DownCast(AxisSelect.Value()),A1))
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{
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gp_Ax2 A( A1->Ax2() );
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const Standard_Real LF = UnitsMethods::LengthFactor();
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const Standard_Real majorR = SC->SemiAxis1() * LF;
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const Standard_Real minorR = SC->SemiAxis2() * LF;
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if ( majorR - minorR >= 0. ) { //:o9 abv 19 Feb 99
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CC = new Geom_Ellipse(A, majorR, minorR);
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}
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//:o9 abv 19 Feb 99
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else {
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A.SetXDirection ( A.XDirection() ^ A.Direction() );
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CC = new Geom_Ellipse(A, minorR, majorR);
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}
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return Standard_True;
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}
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}
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return Standard_False;
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}
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