0024428: Implementation of LGPL license
[occt.git] / src / BRepBlend / BRepBlend_HCurve2dToolGen.gxx
... / ...
CommitLineData
1// Created on: 1995-07-17
2// Created by: Modelistation
3// Copyright (c) 1995-1999 Matra Datavision
4// Copyright (c) 1999-2014 OPEN CASCADE SAS
5//
6// This file is part of Open CASCADE Technology software library.
7//
8// This library is free software; you can redistribute it and / or modify it
9// under the terms of the GNU Lesser General Public version 2.1 as published
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.
13//
14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
16
17#include CurveGen_hxx
18#include <GeomAbs_CurveType.hxx>
19#include <GeomAbs_Shape.hxx>
20#include <Handle_Geom2d_BezierCurve.hxx>
21#include <Handle_Geom2d_BSplineCurve.hxx>
22
23#include <TColStd_Array1OfReal.hxx>
24
25
26//============================================================
27Standard_Integer BRepBlend_HCurve2dToolGen::NbSamples (const CurveGen& C,
28 const Standard_Real U0,
29 const Standard_Real U1) {
30 GeomAbs_CurveType typC = C->GetType();
31 static Standard_Real nbsOther = 10.0;
32 Standard_Real nbs = nbsOther;
33
34 if(typC == GeomAbs_Line)
35 nbs = 2;
36 else if(typC == GeomAbs_BezierCurve)
37 nbs = 3 + C->Bezier()->NbPoles();
38 else if(typC == GeomAbs_BSplineCurve) {
39 Handle(Geom2d_BSplineCurve) BSC = C->BSpline();
40 nbs = BSC->NbKnots();
41 nbs*= BSC->Degree();
42 nbs*= BSC->LastParameter()- BSC->FirstParameter();
43 nbs/= U1-U0;
44 if(nbs < 2.0) nbs=2;
45 }
46 if(nbs>50)
47 nbs = 50;
48 return((Standard_Integer)nbs);
49}