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1 | // Created on: 1991-12-13 |
2 | // Created by: Christophe MARION |
3 | // Copyright (c) 1991-1999 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 | |
18 | #include <Intrv_Interval.hxx> |
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19 | |
20 | // **-----------**** Other |
21 | // ***-----* Before |
22 | // ***------------* JustBefore |
23 | // ***-----------------* OverlappingAtStart |
24 | // ***--------------------------* JustEnclosingAtEnd |
25 | // ***-------------------------------------* Enclosing |
26 | // ***----* JustOverlappingAtStart |
27 | // ***-------------* Similar |
28 | // ***------------------------* JustEnclosingAtStart |
29 | // ***-* Inside |
30 | // ***------* JustOverlappingAtEnd |
31 | // ***-----------------* OverlappingAtEnd |
32 | // ***--------* JustAfter |
33 | // ***---* After |
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34 | //======================================================================= |
35 | //function : Intrv_Interval |
36 | //purpose : |
37 | //======================================================================= |
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38 | Intrv_Interval::Intrv_Interval |
39 | () : myStart(RealFirst()), myEnd (RealLast ()) |
40 | { |
41 | myTolStart = (Standard_ShortReal)Epsilon(RealFirst()); |
42 | myTolEnd = (Standard_ShortReal)Epsilon(RealLast ()); |
43 | } |
44 | |
45 | //======================================================================= |
46 | //function : Intrv_Interval |
47 | //purpose : |
48 | //======================================================================= |
49 | |
50 | Intrv_Interval::Intrv_Interval |
51 | (const Standard_Real Start, const Standard_Real End) : |
52 | myStart(Start), myEnd (End) |
53 | { |
54 | myTolStart = (Standard_ShortReal)Epsilon(myStart); |
55 | myTolEnd = (Standard_ShortReal)Epsilon(myEnd); |
56 | } |
57 | |
58 | //======================================================================= |
59 | //function : Intrv_Interval |
60 | //purpose : |
61 | //======================================================================= |
62 | |
63 | Intrv_Interval::Intrv_Interval |
64 | (const Standard_Real Start, const Standard_ShortReal TolStart, |
65 | const Standard_Real End , const Standard_ShortReal TolEnd) : |
66 | myStart(Start), myEnd (End), |
67 | myTolStart(TolStart),myTolEnd (TolEnd) |
68 | { |
69 | Standard_ShortReal epsStart = (Standard_ShortReal)Epsilon(myStart); |
70 | Standard_ShortReal epsEnd = (Standard_ShortReal)Epsilon(myEnd); |
71 | if (myTolStart < epsStart) myTolStart = epsStart; |
72 | if (myTolEnd < epsEnd ) myTolEnd = epsEnd; |
73 | } |
74 | |
75 | //======================================================================= |
76 | //function : Position |
77 | //purpose : |
78 | //======================================================================= |
79 | |
80 | Intrv_Position Intrv_Interval::Position (const Intrv_Interval& Other) const |
81 | { |
82 | Standard_Real mySMin = myStart - myTolStart; |
83 | Standard_Real mySMax = myStart + myTolStart; |
84 | Standard_Real myEMin = myEnd - myTolEnd ; |
85 | Standard_Real myEMax = myEnd + myTolEnd ; |
86 | Standard_Real otSMin = Other.myStart - Other.myTolStart; |
87 | Standard_Real otSMax = Other.myStart + Other.myTolStart; |
88 | Standard_Real otEMin = Other.myEnd - Other.myTolEnd ; |
89 | Standard_Real otEMax = Other.myEnd + Other.myTolEnd ; |
90 | Intrv_Position P; |
91 | if ( mySMax < otSMin ) { |
92 | if ( myEMax < otSMin ) P = Intrv_Before; |
93 | else if ( otSMax >= myEMin ) P = Intrv_JustBefore; |
94 | else if ( myEMax < otEMin ) P = Intrv_OverlappingAtStart; |
95 | else if ( otEMax >= myEMin ) P = Intrv_JustEnclosingAtEnd; |
96 | else P = Intrv_Enclosing; |
97 | } |
98 | else if ( otSMax >= mySMin ) { |
99 | if ( myEMax < otEMin ) P = Intrv_JustOverlappingAtStart; |
100 | else if ( otEMax >= myEMin ) P = Intrv_Similar; |
101 | else P = Intrv_JustEnclosingAtStart; |
102 | } |
103 | else if ( mySMax < otEMin ) { |
104 | if ( myEMax < otEMin ) P = Intrv_Inside; |
105 | else if ( otEMax >= myEMin ) P = Intrv_JustOverlappingAtEnd; |
106 | else P = Intrv_OverlappingAtEnd; |
107 | } |
108 | else if ( otEMax >= mySMin ) P = Intrv_JustAfter; |
109 | else P = Intrv_After; |
110 | return P; |
111 | } |
112 | |