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1 | -- Created on: 1996-12-30 |
2 | -- Created by: Stagiaire Mary FABIEN |
3 | -- Copyright (c) 1996-1999 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 | |
7fd59977 |
21 | |
22 | class GTransform from BRepBuilderAPI inherits ModifyShape from BRepBuilderAPI |
23 | |
24 | ---Purpose: Geometric transformation on a shape. |
25 | -- The transformation to be applied is defined as a gp_GTrsf |
26 | -- transformation. It may be: |
27 | -- - a transformation equivalent to a gp_Trsf transformation, the |
28 | -- most common case: you should , however, use a BRepAPI_Transform |
29 | -- object to perform this kind of transformation; or |
30 | -- - an affinity, or |
31 | -- - more generally, any type of point transformation which may |
32 | -- be defined by a three row, four column matrix of transformation. |
33 | -- In the last two cases, the underlying geometry of the |
34 | -- following shapes may change: |
35 | -- - a curve which supports an edge of the shape, or |
36 | -- - a surface which supports a face of the shape; |
37 | -- For example, a circle may be transformed into an ellipse when |
38 | -- applying an affinity transformation. |
39 | -- The transformation is applied to: |
40 | -- - all the curves which support edges of the shape, and |
41 | -- - all the surfaces which support faces of the shape. |
42 | -- A GTransform object provides a framework for: |
43 | -- - defining the geometric transformation to be applied, |
44 | -- - implementing the transformation algorithm, and |
45 | -- - consulting the result. |
46 | |
47 | |
48 | |
49 | uses |
50 | Trsf from gp, |
51 | GTrsf from gp, |
52 | Shape from TopoDS, |
53 | Face from TopoDS, |
54 | Collect from BRepBuilderAPI, |
55 | ShapeModification from BRepBuilderAPI, |
56 | ListOfShape from TopTools |
57 | |
58 | -- Modified by Sergey KHROMOV - Thu Mar 27 17:45:42 2003 Begin |
59 | raises |
60 | NoSuchObject from Standard |
61 | |
62 | -- Modified by Sergey KHROMOV - Thu Mar 27 17:45:42 2003 End |
63 | is |
64 | |
65 | Create(T: GTrsf from gp) |
66 | |
67 | returns GTransform from BRepBuilderAPI; |
68 | ---Purpose: Constructs a framework for applying the geometric |
69 | -- transformation T to a shape. Use the function |
70 | -- Perform to define the shape to transform. |
71 | |
72 | |
73 | Create(S: Shape from TopoDS; T: GTrsf from gp; |
74 | Copy: Boolean from Standard = Standard_False) |
75 | |
76 | returns GTransform from BRepBuilderAPI; |
77 | ---Purpose: Constructs a framework for applying the geometric |
78 | -- transformation T to a shape, and applies it to the shape S. |
79 | -- - If the transformation T is direct and isometric (i.e. if |
80 | -- the determinant of the vectorial part of T is equal to |
81 | -- 1.), and if Copy equals false (default value), the |
82 | -- resulting shape is the same as the original but with |
83 | -- a new location assigned to it. |
84 | -- - In all other cases, the transformation is applied to |
85 | -- a duplicate of S. |
86 | -- Use the function Shape to access the result. |
87 | -- Note: the constructed framework can be reused to |
88 | -- apply the same geometric transformation to other |
89 | -- shapes: just specify them with the function Perform. |
90 | |
91 | |
92 | Perform(me: in out; S : Shape from TopoDS; |
93 | Copy: Boolean from Standard = Standard_False) |
94 | |
95 | ---Purpose: Applies the geometric transformation defined at the |
96 | -- time of construction of this framework to the shape S. |
97 | -- - If the transformation T is direct and isometric (i.e. if |
98 | -- the determinant of the vectorial part of T is equal to |
99 | -- 1.), and if Copy equals false (default value), the |
100 | -- resulting shape is the same as the original but with |
101 | -- a new location assigned to it. |
102 | -- - In all other cases, the transformation is applied to a duplicate of S. |
103 | -- Use the function Shape to access the result. |
104 | -- Note: this framework can be reused to apply the same |
105 | -- geometric transformation to other shapes: just specify |
106 | -- them by calling the function Perform again. |
107 | |
108 | is static; |
109 | |
110 | Modified (me: in out; S : Shape from TopoDS) |
111 | ---Purpose: Returns the list of shapes modified from the shape |
112 | -- <S>. |
113 | ---C++: return const & |
114 | ---Level: Public |
115 | returns ListOfShape from TopTools |
116 | is redefined virtual; |
117 | |
118 | -- Modified by Sergey KHROMOV - Thu Mar 27 17:43:59 2003 Begin |
119 | ModifiedShape(me; S: Shape from TopoDS) |
120 | returns Shape from TopoDS |
121 | ---Purpose: Returns the modified shape corresponding to <S>. |
122 | ---C++: return const& |
123 | raises NoSuchObject from Standard |
124 | -- if S is not the initial shape or a sub-shape |
125 | -- of the initial shape. |
126 | is redefined virtual; |
127 | -- Modified by Sergey KHROMOV - Thu Mar 27 17:44:02 2003 End |
128 | |
129 | fields |
130 | |
131 | myGTrsf : GTrsf from gp; |
132 | myUseModif : Boolean from Standard; |
133 | myHist : Collect from BRepBuilderAPI; |
134 | |
135 | end Transform; |