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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.
80 lines
2.5 KiB
C++
80 lines
2.5 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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//============================================ IntAna2d_AnaIntersection_6.cxx
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//============================================================================
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#include <IntAna2d_AnaIntersection.jxx>
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#include <IntAna2d_Outils.hxx>
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void IntAna2d_AnaIntersection::Perform(const gp_Elips2d& Elips,
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const IntAna2d_Conic& Conic)
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{
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Standard_Boolean EIsDirect = Elips.IsDirect();
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Standard_Real A,B,C,D,E,F;
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Standard_Real pcte,ps,pc,p2sc,pcc,pss;
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Standard_Real minor_radius=Elips.MinorRadius();
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Standard_Real major_radius=Elips.MajorRadius();
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Standard_Integer i;
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Standard_Real tx,ty,S;
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done = Standard_False;
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nbp = 0;
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para = Standard_False;
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iden = Standard_False;
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empt = Standard_False;
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gp_Ax2d Axe_rep(Elips.XAxis());
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Conic.Coefficients(A,B,C,D,E,F);
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Conic.NewCoefficients(A,B,C,D,E,F,Axe_rep);
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// Parametre : a avec x=MajorRadius Cos(a) et y=MinorRadius Sin(a)
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pss= B*minor_radius*minor_radius; // SIN ^2
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pcc= A*major_radius*major_radius-pss; // COS ^2
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p2sc=C*major_radius*minor_radius; // 2 SIN COS
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pc= 2.0*D*major_radius; // COS
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ps= 2.0*E*minor_radius; // SIN
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pcte=F+pss; // 1
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math_TrigonometricFunctionRoots Sol(pcc,p2sc,pc,ps,pcte,0.0,2.0*M_PI);
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if (!Sol.IsDone()) {
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done=Standard_False;
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return;
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}
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else {
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if(Sol.InfiniteRoots()) {
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iden=Standard_True;
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done=Standard_True;
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return;
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}
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nbp=Sol.NbSolutions();
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for(i=1;i<=nbp;i++) {
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S = Sol.Value(i);
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tx=major_radius*Cos(S);
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ty=minor_radius*Sin(S);
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Coord_Ancien_Repere(tx,ty,Axe_rep);
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if(!EIsDirect)
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S = M_PI+M_PI-S;
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lpnt[i-1].SetValue(tx,ty,S);
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}
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Traitement_Points_Confondus(nbp,lpnt);
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}
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done = Standard_True;
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}
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