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1 | // Created on: 1998-09-23 |
2 | // Created by: Philippe MANGIN |
3 | // Copyright (c) 1998-1999 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 | |
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18 | #include <GeomLib_LogSample.hxx> |
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19 | #include <Standard_OutOfRange.hxx> |
20 | |
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21 | GeomLib_LogSample::GeomLib_LogSample(const Standard_Real A, |
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22 | const Standard_Real B, |
23 | const Standard_Integer N) |
24 | :math_FunctionSample(A, B, N) |
25 | { |
26 | myF = A - 1; |
27 | myexp = Log(B-A)/N; |
28 | } |
29 | |
30 | Standard_Real GeomLib_LogSample::GetParameter(const Standard_Integer Index) const |
31 | { |
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32 | Standard_Integer aN = NbPoints(); |
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33 | |
34 | |
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35 | if ((Index >= aN) || (Index <= 1)) { |
36 | Standard_Real aA, aB; |
37 | Bounds(aA, aB); |
38 | if (Index == 1) return aA; |
39 | else if (Index == aN) return aB; |
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40 | else throw Standard_OutOfRange("GeomLib_LogSample::GetParameter"); |
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41 | } |
42 | |
43 | Standard_Real v = myF + Exp(myexp*Index); |
44 | return v; |
45 | } |