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1 | -- Created on: 1994-09-02 |
2 | -- Created by: Yves FRICAUD |
3 | -- Copyright (c) 1994-1999 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 | private class FuncCurNul from Geom2dLProp inherits FunctionWithDerivative from math |
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18 | ---Purpose: Function used to find the inflections in 2d. |
19 | |
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20 | uses |
21 | Curve from Geom2d, |
22 | Vec2d from gp, |
23 | Pnt2d from gp, |
24 | Dir2d from gp, |
25 | Curve2dTool from Geom2dLProp |
26 | |
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27 | is |
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28 | Create ( C : Curve from Geom2d) returns FuncCurNul from Geom2dLProp; |
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29 | |
30 | Value (me : in out; X : Real; F : out Real) |
31 | ---Purpose: Returns the value for the variable <X>. |
32 | returns Boolean; |
33 | |
34 | Derivative(me : in out; X : Real; D : out Real) |
35 | ---Purpose: Returns the derivative for the variable <X> |
36 | returns Boolean; |
37 | |
38 | Values(me : in out ; X : Real; F : out Real; D : out Real) |
39 | ---Purpose: Returns the value of the function and the derivative |
40 | -- for the variable <X>. |
41 | returns Boolean; |
42 | |
43 | fields |
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44 | theCurve : Curve from Geom2d; |
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45 | |
46 | end FuncCurNul; |
47 | |