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62 lines
2.6 KiB
C++
Executable File
62 lines
2.6 KiB
C++
Executable File
// 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) 1999-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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//:o9 abv 19.02.99: bm4_id_punch_b.stp #678: treatment of minR > maxR
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// NOTE: parametrisation of resulting ellipse shifted on pi/2
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#include <StepToGeom_MakeEllipse2d.ixx>
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#include <StepGeom_Ellipse.hxx>
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#include <StepGeom_Axis2Placement2d.hxx>
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#include <Geom2d_AxisPlacement.hxx>
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#include <StepToGeom_MakeAxisPlacement.hxx>
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#include <gp_Ax2.hxx>
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#include <gp_Ax22d.hxx>
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//=============================================================================
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// Creation d' un Ellipse de Geom2d a partir d' un Ellipse de Step
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//=============================================================================
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Standard_Boolean StepToGeom_MakeEllipse2d::Convert
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(const Handle(StepGeom_Ellipse)& SC,
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Handle(Geom2d_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()) == 1) {
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Handle(Geom2d_AxisPlacement) A1;
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if (StepToGeom_MakeAxisPlacement::Convert
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(Handle(StepGeom_Axis2Placement2d)::DownCast(AxisSelect.Value()),A1))
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{
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gp_Ax22d A( A1->Ax2d() );
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const Standard_Real majorR = SC->SemiAxis1();
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const Standard_Real minorR = SC->SemiAxis2();
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if ( majorR - minorR >= 0. ) { //:o9 abv 19 Feb 99: bm4_id_punch_b.stp #678: protection
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CC = new Geom2d_Ellipse(A, majorR, minorR);
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}
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else {
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const gp_Dir2d X = A.XDirection();
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A.SetXDirection ( gp_Dir2d ( X.X(), -X.Y() ) );
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CC = new Geom2d_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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