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1 | // Created on: 1994-03-23 |
| 2 | // Created by: Jean Marc LACHAUME |
| 3 | // Copyright (c) 1994-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or modify it under |
| 9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | // by the Free Software Foundation, with special exception defined in the file |
| 11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 12 | // distribution for complete text of the license and disclaimer of any warranty. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
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16 | |
| 17 | #include <Geom2dHatch_Intersector.ixx> |
| 18 | #include <ElCLib.hxx> |
| 19 | #include <Geom2d_Line.hxx> |
| 20 | #include <Precision.hxx> |
| 21 | #include <Geom2dLProp_CLProps2d.hxx> |
| 22 | |
| 23 | |
| 24 | //======================================================================= |
| 25 | //function : Geom2dHatch_Intersector |
| 26 | //purpose : |
| 27 | //======================================================================= |
| 28 | |
| 29 | Geom2dHatch_Intersector::Geom2dHatch_Intersector() : |
| 30 | myConfusionTolerance(0.0), |
| 31 | myTangencyTolerance(0.0) |
| 32 | { |
| 33 | } |
| 34 | |
| 35 | //======================================================================= |
| 36 | //function : Perform |
| 37 | //purpose : |
| 38 | //======================================================================= |
| 39 | |
| 40 | void Geom2dHatch_Intersector::Perform(const gp_Lin2d& L, |
| 41 | const Standard_Real P, |
| 42 | const Standard_Real Tol, |
| 43 | const Geom2dAdaptor_Curve& C) |
| 44 | { |
| 45 | |
| 46 | //Standard_Real pfbid,plbid; |
| 47 | IntRes2d_Domain DL; |
| 48 | if(P!=RealLast()) |
| 49 | DL.SetValues(L.Location(),0.,Tol,ElCLib::Value(P,L),P,Tol); |
| 50 | else |
| 51 | DL.SetValues(L.Location(),0.,Tol,Standard_True); |
| 52 | |
| 53 | IntRes2d_Domain DE(C.Value(C.FirstParameter()), |
| 54 | C.FirstParameter(),Precision::PIntersection(), |
| 55 | C.Value(C.LastParameter()), |
| 56 | C.LastParameter(),Precision::PIntersection()); |
| 57 | |
| 58 | Handle(Geom2d_Line) GL= new Geom2d_Line(L); |
| 59 | Geom2dAdaptor_Curve CGA(GL); |
| 60 | void *ptrpoureviterlesproblemesdeconst = (void *)(&C); |
| 61 | |
| 62 | Geom2dInt_GInter Inter(CGA, |
| 63 | DL, |
| 64 | *((Geom2dAdaptor_Curve *)ptrpoureviterlesproblemesdeconst), |
| 65 | DE, |
| 66 | Precision::PConfusion(), |
| 67 | Precision::PIntersection()); |
| 68 | this->SetValues(Inter); |
| 69 | } |
| 70 | |
| 71 | //======================================================================= |
| 72 | //function : LocalGeometry |
| 73 | //purpose : |
| 74 | //======================================================================= |
| 75 | |
| 76 | void Geom2dHatch_Intersector::LocalGeometry(const Geom2dAdaptor_Curve& E, |
| 77 | const Standard_Real U, |
| 78 | gp_Dir2d& Tang, |
| 79 | gp_Dir2d& Norm, |
| 80 | Standard_Real& C) const |
| 81 | { |
| 82 | //Standard_Real f,l; |
| 83 | Geom2dLProp_CLProps2d Prop(E.Curve(),U,2,Precision::PConfusion()); |
| 84 | |
| 85 | if(!Prop.IsTangentDefined()) return; |
| 86 | |
| 87 | Prop.Tangent(Tang); |
| 88 | C = Prop.Curvature(); |
| 89 | if (C > Precision::PConfusion() && C<RealLast()) |
| 90 | Prop.Normal(Norm); |
| 91 | else |
| 92 | Norm.SetCoord(Tang.Y(),-Tang.X()); |
| 93 | } |
| 94 | |
| 95 | |
| 96 | |
| 97 | |
| 98 | |
| 99 | |
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