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1 | // Created on: 1995-07-17 |
2 | // Created by: Modelistation |
3 | // Copyright (c) 1995-1999 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 | |
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17 | #include <BRepBlend_HCurveTool.ixx> |
18 | |
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19 | #include <GeomAbs_CurveType.hxx> |
20 | #include <GeomAbs_Shape.hxx> |
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21 | #include <Geom_BezierCurve.hxx> |
22 | #include <Geom_BSplineCurve.hxx> |
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23 | |
24 | #include <TColStd_Array1OfReal.hxx> |
25 | |
26 | |
27 | //============================================================ |
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28 | Standard_Integer BRepBlend_HCurveTool::NbSamples (const Handle(Adaptor3d_HCurve)& C, |
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29 | const Standard_Real U0, |
30 | const Standard_Real U1) { |
31 | GeomAbs_CurveType typC = C->GetType(); |
32 | static Standard_Real nbsOther = 10.0; |
33 | Standard_Real nbs = nbsOther; |
34 | |
35 | if(typC == GeomAbs_Line) |
36 | nbs = 2; |
37 | else if(typC == GeomAbs_BezierCurve) |
38 | nbs = 3 + C->Bezier()->NbPoles(); |
39 | else if(typC == GeomAbs_BSplineCurve) { |
40 | Handle(Geom_BSplineCurve) BSC = C->BSpline(); |
41 | nbs = BSC->NbKnots(); |
42 | nbs*= BSC->Degree(); |
43 | nbs*= BSC->LastParameter()- BSC->FirstParameter(); |
44 | nbs/= U1-U0; |
45 | if(nbs < 2.0) nbs=2; |
46 | } |
47 | if(nbs>50) |
48 | nbs = 50; |
49 | return((Standard_Integer)nbs); |
50 | } |