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1 | -- Created on: 1993-09-01 |
2 | -- Created by: Laurent PAINNOT |
3 | -- Copyright (c) 1993-1999 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 | |
17 | deferred class Function2d from AppCont |
18 | |
19 | ---Purpose: deferred class describing a continous 2d function f(u) |
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20 | -- This class must be provided by the user to use the |
21 | -- approximation algorithm FittingCurve2d. |
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22 | |
23 | uses Pnt2d from gp, |
24 | Vec2d from gp |
25 | |
26 | is |
27 | |
28 | Delete(me:out) is virtual; |
29 | ---C++: alias "Standard_EXPORT virtual ~AppCont_Function2d(){Delete() ; }" |
30 | |
31 | |
32 | FirstParameter(me) returns Real |
33 | ---Purpose: returns the first parameter of the function. |
34 | is deferred; |
35 | |
36 | LastParameter(me) returns Real |
37 | ---Purpose: returns the last parameter of the function. |
38 | is deferred; |
39 | |
40 | Value(me; U: Real) returns Pnt2d |
41 | ---Purpose: returns the point at parameter <U>. |
42 | is deferred; |
43 | |
44 | D1(me; U: Real; P: in out Pnt2d; V: in out Vec2d) returns Boolean |
45 | ---Purpose: returns the point and the derivative values at |
46 | -- the parameter <U>. |
47 | is deferred; |
48 | |
49 | |
50 | end Function2d; |