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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
125 lines
2.8 KiB
C++
125 lines
2.8 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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#include <gp_Circ2d.hxx>
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#include <gp_Elips2d.hxx>
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#include <gp_Hypr2d.hxx>
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#include <gp_Lin2d.hxx>
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#include <gp_Parab2d.hxx>
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#include <IntAna2d_AnaIntersection.hxx>
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#include <IntAna2d_Conic.hxx>
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#include <IntAna2d_IntPoint.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <StdFail_NotDone.hxx>
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void IntAna2d_AnaIntersection::Perform (const gp_Lin2d& L1,
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const gp_Lin2d& L2) {
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done = Standard_False;
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Standard_Real A1,B1,C1;
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Standard_Real A2,B2,C2;
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L1.Coefficients(A1,B1,C1);
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L2.Coefficients(A2,B2,C2);
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Standard_Real al1,be1,ga1;
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Standard_Real al2,be2,ga2;
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Standard_Real Det =Max (Abs(A1),Max(Abs(A2),Max(Abs(B1),Abs(B2))));
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if (Abs(A1)==Det) {
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al1=A1;
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be1=B1;
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ga1=C1;
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al2=A2;
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be2=B2;
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ga2=C2;
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}
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else if (Abs(B1)==Det) {
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al1=B1;
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be1=A1;
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ga1=C1;
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al2=B2;
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be2=A2;
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ga2=C2;
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}
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else if (Abs(A2)==Det) {
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al1=A2;
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be1=B2;
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ga1=C2;
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al2=A1;
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be2=B1;
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ga2=C1;
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}
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else {
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al1=B2;
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be1=A2;
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ga1=C2;
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al2=B1;
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be2=A1;
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ga2=C1;
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}
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Standard_Real rap=al2/al1;
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Standard_Real denom=be2-rap*be1;
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if (Abs(denom)<=RealEpsilon()) { // Directions confondues
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para=Standard_True;
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nbp=0;
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if (Abs(ga2-rap*ga1)<=RealEpsilon()) { // Droites confondues
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iden=Standard_True;
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empt=Standard_False;
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}
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else { // Droites paralleles
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iden=Standard_False;
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empt=Standard_True;
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}
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}
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else {
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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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nbp=1;
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Standard_Real XS = (be1*ga2/al1-be2*ga1/al1)/denom;
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Standard_Real YS = (rap*ga1-ga2)/denom;
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if (((Abs(A1)!=Det)&&(Abs(B1)==Det))||
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((Abs(A1)!=Det)&&(Abs(B1)!=Det)&&(Abs(A2)!=Det))) {
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Standard_Real temp=XS;
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XS=YS;
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YS=temp;
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}
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Standard_Real La,Mu;
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if (Abs(A1)>=Abs(B1)) {
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La=(YS-L1.Location().Y())/A1;
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}
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else {
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La=(L1.Location().X()-XS)/B1;
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}
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if (Abs(A2)>=Abs(B2)) {
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Mu=(YS-L2.Location().Y())/A2;
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}
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else {
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Mu=(L2.Location().X()-XS)/B2;
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}
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lpnt[0].SetValue(XS,YS,La,Mu);
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}
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done=Standard_True;
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}
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