0024166: Unable to create file with "Save" menu of voxeldemo Qt sample
[occt.git] / src / BRepBlend / BRepBlend_HCurve2dToolGen.gxx
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b311480e 1// Created on: 1995-07-17
2// Created by: Modelistation
3// Copyright (c) 1995-1999 Matra Datavision
4// Copyright (c) 1999-2012 OPEN CASCADE SAS
5//
6// The content of this file is subject to the Open CASCADE Technology Public
7// License Version 6.5 (the "License"). You may not use the content of this file
8// except in compliance with the License. Please obtain a copy of the License
9// at http://www.opencascade.org and read it completely before using this file.
10//
11// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
13//
14// The Original Code and all software distributed under the License is
15// distributed on an "AS IS" basis, without warranty of any kind, and the
16// Initial Developer hereby disclaims all such warranties, including without
17// limitation, any warranties of merchantability, fitness for a particular
18// purpose or non-infringement. Please see the License for the specific terms
19// and conditions governing the rights and limitations under the License.
20
7fd59977 21
22#include CurveGen_hxx
23#include <GeomAbs_CurveType.hxx>
24#include <GeomAbs_Shape.hxx>
25#include <Handle_Geom2d_BezierCurve.hxx>
26#include <Handle_Geom2d_BSplineCurve.hxx>
27
28#include <TColStd_Array1OfReal.hxx>
29
30
31//============================================================
32Standard_Integer BRepBlend_HCurve2dToolGen::NbSamples (const CurveGen& C,
33 const Standard_Real U0,
34 const Standard_Real U1) {
35 GeomAbs_CurveType typC = C->GetType();
36 static Standard_Real nbsOther = 10.0;
37 Standard_Real nbs = nbsOther;
38
39 if(typC == GeomAbs_Line)
40 nbs = 2;
41 else if(typC == GeomAbs_BezierCurve)
42 nbs = 3 + C->Bezier()->NbPoles();
43 else if(typC == GeomAbs_BSplineCurve) {
44 Handle(Geom2d_BSplineCurve) BSC = C->BSpline();
45 nbs = BSC->NbKnots();
46 nbs*= BSC->Degree();
47 nbs*= BSC->LastParameter()- BSC->FirstParameter();
48 nbs/= U1-U0;
49 if(nbs < 2.0) nbs=2;
50 }
51 if(nbs>50)
52 nbs = 50;
53 return((Standard_Integer)nbs);
54}