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1 | // Created on: 1998-09-23 |
2 | // Created by: Philippe MANGIN |
3 | // Copyright (c) 1998-1999 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 | |
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21 | |
22 | |
23 | #include <GeomLib_LogSample.ixx> |
24 | |
25 | #include <Standard_OutOfRange.hxx> |
26 | |
27 | |
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28 | GeomLib_LogSample::GeomLib_LogSample(const Standard_Real A, |
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29 | const Standard_Real B, |
30 | const Standard_Integer N) |
31 | :math_FunctionSample(A, B, N) |
32 | { |
33 | myF = A - 1; |
34 | myexp = Log(B-A)/N; |
35 | } |
36 | |
37 | Standard_Real GeomLib_LogSample::GetParameter(const Standard_Integer Index) const |
38 | { |
39 | Standard_Integer n = NbPoints(); |
40 | |
41 | |
42 | if ((Index >= n) || (Index <= 1)) { |
43 | Standard_Real a, b; |
44 | Bounds(a, b); |
45 | if (Index == 1) return a; |
46 | else if (Index == n) return b; |
47 | else Standard_OutOfRange::Raise("GeomLib_LogSample::GetParameter"); |
48 | } |
49 | |
50 | Standard_Real v = myF + Exp(myexp*Index); |
51 | return v; |
52 | } |