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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 | |
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18 | #include <Adaptor2d_HCurve2d.hxx> |
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19 | #include <Geom2d_BezierCurve.hxx> |
20 | #include <Geom2d_BSplineCurve.hxx> |
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21 | #include <GeomAbs_CurveType.hxx> |
22 | #include <GeomAbs_Shape.hxx> |
23 | #include <gp_Pnt2d.hxx> |
24 | #include <gp_Vec2d.hxx> |
25 | #include <IntPatch_HCurve2dTool.hxx> |
26 | #include <Standard_DomainError.hxx> |
27 | #include <Standard_NoSuchObject.hxx> |
28 | #include <Standard_OutOfRange.hxx> |
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29 | #include <TColStd_Array1OfReal.hxx> |
30 | |
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31 | //============================================================ |
32 | Standard_Integer IntPatch_HCurve2dTool::NbSamples (const Handle(Adaptor2d_HCurve2d)& C, |
33 | const Standard_Real U0, |
34 | const Standard_Real U1) |
35 | { |
36 | Standard_Real nbs; |
37 | switch (C->GetType()) |
38 | { |
39 | case GeomAbs_Line: return 2; |
40 | case GeomAbs_BezierCurve: |
41 | { |
42 | nbs = (3 + C->NbPoles()); |
43 | } |
44 | break; |
45 | case GeomAbs_BSplineCurve: |
46 | { |
47 | nbs = C->NbKnots(); |
48 | nbs *= C->Degree(); |
49 | //szv:nbs *= C->LastParameter() - C->FirstParameter(); |
50 | //szv:nbs /= U1-U0; |
51 | nbs *= U1-U0; |
52 | nbs /= C->LastParameter() - C->FirstParameter(); |
53 | if (nbs < 2.0) nbs = 2.0; |
54 | } |
55 | break; |
56 | default: return 25; |
57 | } |
58 | if (nbs>50.0) |
59 | return 50; |
60 | return((Standard_Integer)nbs); |
61 | } |