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1 | // File: Geom2dHatch_Intersector.cxx |
| 2 | // Created: Wed Mar 23 11:29:17 1994 |
| 3 | // Author: Jean Marc LACHAUME |
| 4 | // <jml@phylox> |
| 5 | |
| 6 | |
| 7 | #include <Geom2dHatch_Intersector.ixx> |
| 8 | #include <ElCLib.hxx> |
| 9 | #include <Geom2d_Line.hxx> |
| 10 | #include <Precision.hxx> |
| 11 | #include <Geom2dLProp_CLProps2d.hxx> |
| 12 | |
| 13 | |
| 14 | //======================================================================= |
| 15 | //function : Geom2dHatch_Intersector |
| 16 | //purpose : |
| 17 | //======================================================================= |
| 18 | |
| 19 | Geom2dHatch_Intersector::Geom2dHatch_Intersector() : |
| 20 | myConfusionTolerance(0.0), |
| 21 | myTangencyTolerance(0.0) |
| 22 | { |
| 23 | } |
| 24 | |
| 25 | //======================================================================= |
| 26 | //function : Perform |
| 27 | //purpose : |
| 28 | //======================================================================= |
| 29 | |
| 30 | void Geom2dHatch_Intersector::Perform(const gp_Lin2d& L, |
| 31 | const Standard_Real P, |
| 32 | const Standard_Real Tol, |
| 33 | const Geom2dAdaptor_Curve& C) |
| 34 | { |
| 35 | |
| 36 | //Standard_Real pfbid,plbid; |
| 37 | IntRes2d_Domain DL; |
| 38 | if(P!=RealLast()) |
| 39 | DL.SetValues(L.Location(),0.,Tol,ElCLib::Value(P,L),P,Tol); |
| 40 | else |
| 41 | DL.SetValues(L.Location(),0.,Tol,Standard_True); |
| 42 | |
| 43 | IntRes2d_Domain DE(C.Value(C.FirstParameter()), |
| 44 | C.FirstParameter(),Precision::PIntersection(), |
| 45 | C.Value(C.LastParameter()), |
| 46 | C.LastParameter(),Precision::PIntersection()); |
| 47 | |
| 48 | Handle(Geom2d_Line) GL= new Geom2d_Line(L); |
| 49 | Geom2dAdaptor_Curve CGA(GL); |
| 50 | void *ptrpoureviterlesproblemesdeconst = (void *)(&C); |
| 51 | |
| 52 | Geom2dInt_GInter Inter(CGA, |
| 53 | DL, |
| 54 | *((Geom2dAdaptor_Curve *)ptrpoureviterlesproblemesdeconst), |
| 55 | DE, |
| 56 | Precision::PConfusion(), |
| 57 | Precision::PIntersection()); |
| 58 | this->SetValues(Inter); |
| 59 | } |
| 60 | |
| 61 | //======================================================================= |
| 62 | //function : LocalGeometry |
| 63 | //purpose : |
| 64 | //======================================================================= |
| 65 | |
| 66 | void Geom2dHatch_Intersector::LocalGeometry(const Geom2dAdaptor_Curve& E, |
| 67 | const Standard_Real U, |
| 68 | gp_Dir2d& Tang, |
| 69 | gp_Dir2d& Norm, |
| 70 | Standard_Real& C) const |
| 71 | { |
| 72 | //Standard_Real f,l; |
| 73 | Geom2dLProp_CLProps2d Prop(E.Curve(),U,2,Precision::PConfusion()); |
| 74 | |
| 75 | if(!Prop.IsTangentDefined()) return; |
| 76 | |
| 77 | Prop.Tangent(Tang); |
| 78 | C = Prop.Curvature(); |
| 79 | if (C > Precision::PConfusion() && C<RealLast()) |
| 80 | Prop.Normal(Norm); |
| 81 | else |
| 82 | Norm.SetCoord(Tang.Y(),-Tang.X()); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | |
| 87 | |
| 88 | |
| 89 | |
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