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1 | -- Created on: 1995-03-02 |
2 | -- Created by: Jean-Louis Frenkel |
3 | -- Copyright (c) 1995-1999 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 | class RectangularGrid from Aspect |
18 | inherits Grid from Aspect |
19 | |
20 | uses |
21 | PlaneAngle, Length from Quantity |
22 | |
23 | raises |
24 | NegativeValue,NullValue,NumericError from Standard |
25 | |
26 | is |
27 | |
28 | Create(aXStep, aYStep: Length from Quantity; |
29 | anXOrigin: Length from Quantity = 0; |
30 | anYOrigin: Length from Quantity = 0; |
31 | aFirstAngle: PlaneAngle from Quantity = 0; |
32 | aSecondAngle: PlaneAngle from Quantity = 0; |
33 | aRotationAngle: PlaneAngle from Quantity = 0) |
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34 | returns RectangularGrid from Aspect |
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35 | ---Purpose: creates a new grid. By default this grid is not |
36 | -- active. |
37 | -- The first angle is given relatively to the horizontal. |
38 | -- The second angle is given relatively to the vertical. |
39 | raises NumericError from Standard; |
40 | ---Warning: raises NumericError from Standard if the two |
41 | -- networks are parallel. |
42 | |
43 | ---Category: grid definition methods |
44 | |
45 | |
46 | SetXStep(me: mutable; aStep: Length from Quantity) |
47 | ---Purpose: defines the x step of the grid. |
48 | raises NegativeValue,NullValue from Standard |
49 | ---Warning: raises an exception is the step is not strictly positive. |
50 | is static; |
51 | |
52 | SetYStep(me: mutable; aStep: Length from Quantity) |
53 | ---Purpose: defines the y step of the grid. |
54 | raises NegativeValue,NullValue from Standard |
55 | ---Warning: raises an exception is the step is not strictly positive. |
56 | is static; |
57 | |
58 | SetAngle(me: mutable; anAngle1: PlaneAngle from Quantity; |
59 | anAngle2: PlaneAngle from Quantity) |
60 | ---Purpose: defines the angle of the second network |
61 | -- the fist angle is given relatively to the horizontal. |
62 | -- the second angle is given relatively to the vertical. |
63 | raises NumericError from Standard |
64 | ---Warning: raises NumericError from Standard if the two |
65 | -- line networks are parallel. |
66 | is static; |
67 | |
68 | SetGridValues(me: mutable; XOrigin, YOrigin: Length from Quantity; |
69 | XStep, YStep: Length from Quantity; |
70 | RotationAngle: PlaneAngle from Quantity) |
71 | is static; |
72 | |
73 | ---Category: Pick methods |
74 | -- |
75 | Compute(me; X,Y: Length from Quantity; gridX, gridY : out Length from Quantity) |
76 | ---Purpose: returns the point of the grid the closest to the point X,Y |
77 | is static; |
78 | |
79 | |
80 | |
81 | ---Category: inquire methods |
82 | |
83 | XStep(me) returns Length from Quantity |
84 | ---Purpose: returns the x step of the grid. |
85 | is static; |
86 | |
87 | YStep(me) returns Length from Quantity |
88 | ---Purpose: returns the x step of the grid. |
89 | is static; |
90 | |
91 | FirstAngle(me) returns PlaneAngle from Quantity |
92 | ---Purpose: returns the x Angle of the grid, relatively to the horizontal. |
93 | is static; |
94 | |
95 | SecondAngle(me) returns PlaneAngle from Quantity |
96 | ---Purpose: returns the y Angle of the grid, relatively to the vertical. |
97 | is static; |
98 | |
99 | |
100 | |
101 | |
102 | ---Category: private methods. |
103 | |
104 | |
105 | Init(me: mutable) |
106 | is redefined static; |
107 | |
108 | CheckAngle(me;alpha,beta: PlaneAngle from Quantity) |
109 | returns Boolean from Standard |
110 | is static private; |
111 | |
112 | fields |
113 | |
114 | myXStep: Length from Quantity; |
115 | myYStep: Length from Quantity; |
116 | myFirstAngle: PlaneAngle from Quantity; |
117 | mySecondAngle: PlaneAngle from Quantity; |
118 | a1,b1,c1: Real from Standard; |
119 | a2,b2,c2: Real from Standard; |
120 | |
121 | |
122 | end RectangularGrid from Aspect; |