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1 | -- Created on: 1993-03-03 |
| 2 | -- Created by: Remi LEQUETTE |
| 3 | -- Copyright (c) 1993-1999 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 | -- Update: Frederic MAUPAS |
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18 | |
| 19 | |
| 20 | package MgtTopLoc |
| 21 | |
| 22 | ---Purpose: The package MgtTopLoc provides methods to store |
| 23 | -- and retrieve local coordinate systems. i.e. |
| 24 | -- translationg them from Persistent to Transient and |
| 25 | -- vice-versa. |
| 26 | -- |
| 27 | -- * Persistent local coordinate systems are provided |
| 28 | -- by the package PTopLoc. |
| 29 | -- |
| 30 | -- * Transient local coordinate systems are provided |
| 31 | -- by the package TopLoc. |
| 32 | -- |
| 33 | -- This package keeps track of previous translations |
| 34 | -- to preserve the incremental feature of coordinate |
| 35 | -- systems. i.e. once a data has been translated, |
| 36 | -- translating it back will give the original data. |
| 37 | -- |
| 38 | -- Two kinds of objects are managed : |
| 39 | -- |
| 40 | -- * Datum3D : A Datum3D is an elementary local |
| 41 | -- coordinate system handled by reference. |
| 42 | -- |
| 43 | -- * Location : A Location is a complex local |
| 44 | -- coordinate system made by linking elementary |
| 45 | -- coordinate systems (Datum3D). If a Location is |
| 46 | -- translated twice only the local coordinate systems |
| 47 | -- will be the same. This is not a problem as the |
| 48 | -- comparison of Locations is based on the comparison |
| 49 | -- of local coordinate systems. |
| 50 | |
| 51 | uses |
| 52 | |
| 53 | TopLoc, |
| 54 | PTopLoc, |
| 55 | PTColStd |
| 56 | |
| 57 | is |
| 58 | Translate(D : Datum3D from TopLoc; |
| 59 | M : in out TransientPersistentMap from PTColStd) |
| 60 | returns Datum3D from PTopLoc; |
| 61 | ---Purpose: Translate a transient Datum3D to a persistant |
| 62 | -- Datum3D. |
| 63 | ---Level: Internal |
| 64 | |
| 65 | Translate(D : Datum3D from PTopLoc; |
| 66 | M : in out PersistentTransientMap from PTColStd) |
| 67 | returns Datum3D from TopLoc; |
| 68 | ---Purpose: Translate a persistant Datum3D to a transient |
| 69 | -- Datum3D. |
| 70 | ---Level: Internal |
| 71 | |
| 72 | |
| 73 | Translate(L : Location from TopLoc; |
| 74 | M : in out TransientPersistentMap from PTColStd) |
| 75 | returns Location from PTopLoc; |
| 76 | ---Purpose: Translate a non storable Location to a storable |
| 77 | -- Location. |
| 78 | ---Level: Internal |
| 79 | |
| 80 | Translate(L : Location from PTopLoc; |
| 81 | M : in out PersistentTransientMap from PTColStd) |
| 82 | returns Location from TopLoc; |
| 83 | ---Purpose: Translate a storable Location to a non storable |
| 84 | -- Location. |
| 85 | ---Level: Internal |
| 86 | |
| 87 | |
| 88 | end MgtTopLoc; |
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