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87 lines
2.8 KiB
C++
Executable File
87 lines
2.8 KiB
C++
Executable File
// Created on: 1994-09-05
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// Created by: Yves FRICAUD
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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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#include <LProp_AnalyticCurInf.ixx>
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#include <ElCLib.hxx>
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//=======================================================================
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//function : LProp_AnalyticCurInf
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//purpose :
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//=======================================================================
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LProp_AnalyticCurInf::LProp_AnalyticCurInf()
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{
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}
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//=======================================================================
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//function : Perform
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//purpose :
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//=======================================================================
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void LProp_AnalyticCurInf::Perform (const GeomAbs_CurveType CType,
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const Standard_Real UFirst,
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const Standard_Real ULast,
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LProp_CurAndInf& Result)
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{
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Standard_Boolean IsMin = Standard_True;
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Standard_Boolean IsMax = Standard_False;
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switch (CType) {
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case GeomAbs_Ellipse:
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{
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Standard_Real U1,U2,U3,U4;
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Standard_Real UFPlus2PI = UFirst + 2*M_PI;
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U1 = ElCLib::InPeriod(0.0 ,UFirst,UFPlus2PI);
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U2 = ElCLib::InPeriod(M_PI/2. ,UFirst,UFPlus2PI);
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U3 = ElCLib::InPeriod(M_PI ,UFirst,UFPlus2PI);
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U4 = ElCLib::InPeriod(3.*M_PI/2.,UFirst,UFPlus2PI);
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if (UFirst <= U1 && U1 <= ULast) {Result.AddExtCur(U1, IsMin);}
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if (UFirst <= U2 && U2 <= ULast) {Result.AddExtCur(U2, IsMax);}
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if (UFirst <= U3 && U3 <= ULast) {Result.AddExtCur(U3, IsMin);}
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if (UFirst <= U4 && U4 <= ULast) {Result.AddExtCur(U4, IsMax);}
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}
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break;
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case GeomAbs_Hyperbola:
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if (UFirst <= 0.0 && ULast >= 0.0) {
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Result.AddExtCur(0.0 , Standard_True);
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}
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break;
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case GeomAbs_Parabola:
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if (UFirst <= 0.0 && ULast >= 0.0) {
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Result.AddExtCur(0.0 , Standard_True);
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}
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break;
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#ifndef DEB
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default:
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break;
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#endif
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}
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}
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