0031668: Visualization - WebGL sample doesn't work on Emscripten 1.39
[occt.git] / src / BRepLProp / BRepLProp_CurveTool.hxx
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42cf5bc1 1// Created on: 1994-02-24
2// Created by: Laurent BOURESCHE
3// Copyright (c) 1994-1999 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 under
9// the terms of the GNU Lesser General Public License 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#ifndef _BRepLProp_CurveTool_HeaderFile
18#define _BRepLProp_CurveTool_HeaderFile
19
20#include <Standard.hxx>
21#include <Standard_DefineAlloc.hxx>
22#include <Standard_Handle.hxx>
23
24#include <Standard_Real.hxx>
25#include <Standard_Integer.hxx>
26class BRepAdaptor_Curve;
27class gp_Pnt;
28class gp_Vec;
29
30
31
32class BRepLProp_CurveTool
33{
34public:
35
36 DEFINE_STANDARD_ALLOC
37
38
39 //! Computes the point <P> of parameter <U> on the curve <C>.
40 Standard_EXPORT static void Value (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P);
41
42 //! Computes the point <P> and first derivative <V1> of
43 //! parameter <U> on the curve <C>.
44 Standard_EXPORT static void D1 (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1);
45
46 //! Computes the point <P>, the first derivative <V1> and second
47 //! derivative <V2> of parameter <U> on the curve <C>.
48 Standard_EXPORT static void D2 (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2);
49
50 //! Computes the point <P>, the first derivative <V1>, the
51 //! second derivative <V2> and third derivative <V3> of
52 //! parameter <U> on the curve <C>.
53 Standard_EXPORT static void D3 (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3);
54
55 //! returns the order of continuity of the curve <C>.
56 //! returns 1 : first derivative only is computable
57 //! returns 2 : first and second derivative only are computable.
58 //! returns 3 : first, second and third are computable.
59 Standard_EXPORT static Standard_Integer Continuity (const BRepAdaptor_Curve& C);
60
61 //! returns the first parameter bound of the curve.
62 Standard_EXPORT static Standard_Real FirstParameter (const BRepAdaptor_Curve& C);
63
64 //! returns the last parameter bound of the curve.
65 //! FirstParameter must be less than LastParamenter.
66 Standard_EXPORT static Standard_Real LastParameter (const BRepAdaptor_Curve& C);
67
68
69
70
71protected:
72
73
74
75
76
77private:
78
79
80
81
82
83};
84
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90
91#endif // _BRepLProp_CurveTool_HeaderFile