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1 | // Created on: 1992-10-22 |
2 | // Created by: Laurent BUCHARD |
3 | // Copyright (c) 1992-1999 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 <Geom2dInt_Geom2dCurveTool.ixx> |
18 | |
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19 | #include <GeomAbs_CurveType.hxx> |
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20 | #include <Geom2d_BezierCurve.hxx> |
21 | #include <Geom2d_BSplineCurve.hxx> |
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22 | #include <Geom2d_BezierCurve.hxx> |
23 | #include <Geom2d_BSplineCurve.hxx> |
24 | |
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25 | #include <Adaptor2d_Curve2d.hxx> |
26 | |
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27 | //============================================================ |
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28 | Standard_Integer Geom2dInt_Geom2dCurveTool::NbSamples (const Adaptor2d_Curve2d& C, |
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29 | const Standard_Real U0, |
30 | const Standard_Real U1) |
31 | { |
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32 | GeomAbs_CurveType typC = C.GetType(); |
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33 | Standard_Integer nbs = C.NbSamples(); |
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34 | |
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35 | if(typC == GeomAbs_BSplineCurve) { |
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36 | Standard_Real t=C.LastParameter()-C.FirstParameter(); |
37 | Standard_Real t1=U1-U0; |
38 | if(t1<0.0) t1=-t1; |
39 | nbs = C.NbKnots(); |
40 | nbs*= C.Degree(); |
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41 | Standard_Real anb = t1/t * nbs; |
42 | nbs = (Standard_Integer)anb; |
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43 | if(nbs < 4.0) nbs=4; |
44 | } |
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45 | |
46 | if(nbs>300) |
47 | nbs = 300; |
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48 | return nbs; |
49 | |
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50 | } |
51 | //============================================================ |
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52 | Standard_Integer Geom2dInt_Geom2dCurveTool::NbSamples (const Adaptor2d_Curve2d& C) { |
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53 | return C.NbSamples(); |
54 | } |
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55 | |
56 | |
57 | |
58 | |