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1 | // Copyright (c) 1995-1999 Matra Datavision |
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2 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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3 | // |
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4 | // This file is part of Open CASCADE Technology software library. |
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5 | // |
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6 | // This library is free software; you can redistribute it and/or modify it under |
7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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8 | // by the Free Software Foundation, with special exception defined in the file |
9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
10 | // distribution for complete text of the license and disclaimer of any warranty. |
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11 | // |
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12 | // Alternatively, this file may be used under the terms of Open CASCADE |
13 | // commercial license or contractual agreement. |
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14 | |
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15 | #include <StdPrs_ToolRFace.hxx> |
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16 | |
17 | #include <Adaptor2d_Curve2d.hxx> |
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18 | #include <BRep_Tool.hxx> |
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19 | #include <BRepAdaptor_HSurface.hxx> |
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20 | #include <TopoDS.hxx> |
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21 | |
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22 | //======================================================================= |
23 | //function : StdPrs_ToolRFace |
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24 | //purpose : |
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25 | //======================================================================= |
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26 | StdPrs_ToolRFace::StdPrs_ToolRFace() |
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27 | : myHasNullCurves (Standard_False) |
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28 | { |
29 | } |
30 | |
31 | //======================================================================= |
32 | //function : StdPrs_ToolRFace |
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33 | //purpose : |
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34 | //======================================================================= |
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35 | StdPrs_ToolRFace::StdPrs_ToolRFace (const Handle(BRepAdaptor_HSurface)& theSurface) |
36 | : myFace (theSurface->ChangeSurface().Face()), |
37 | myHasNullCurves (Standard_False) |
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38 | { |
39 | myFace.Orientation(TopAbs_FORWARD); |
40 | } |
41 | |
42 | //======================================================================= |
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43 | //function : next |
44 | //purpose : |
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45 | //======================================================================= |
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46 | void StdPrs_ToolRFace::next() |
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47 | { |
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48 | Standard_Real aParamU1, aParamU2; |
49 | for (; myExplorer.More(); myExplorer.Next()) |
50 | { |
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51 | // skip INTERNAL and EXTERNAL edges |
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52 | if (myExplorer.Current().Orientation() != TopAbs_FORWARD |
53 | && myExplorer.Current().Orientation() != TopAbs_REVERSED) |
54 | { |
55 | continue; |
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56 | } |
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57 | |
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58 | if (Handle(Geom2d_Curve) aCurve = BRep_Tool::CurveOnSurface (TopoDS::Edge (myExplorer.Current()), myFace, aParamU1, aParamU2)) |
59 | { |
60 | myCurve.Load (aCurve, aParamU1, aParamU2); |
61 | return; |
62 | } |
63 | else |
64 | { |
65 | myHasNullCurves = Standard_True; |
66 | } |
67 | } |
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68 | |
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69 | myCurve.Reset(); |
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70 | } |