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1 | -- Created on: 1998-09-16 |
2 | -- Created by: Roman LYGIN <rln@nnov.matra-dtv.fr> |
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 | |
7fd59977 |
21 | -- Pavel DURANDIN <pdn@nnov.matra-dtv.fr> |
7fd59977 |
22 | |
23 | |
24 | class FreeBounds from ShapeFix |
25 | |
26 | ---Purpose: This class is intended to output free bounds of the shape |
27 | -- (free bounds are the wires consisting of edges referenced by the |
28 | -- only face). |
29 | -- For building free bounds it uses ShapeAnalysis_FreeBounds class. |
30 | -- This class complements it with the feature to reduce the number |
31 | -- of open wires. |
32 | -- This reduction is performed with help of connecting several |
33 | -- adjacent open wires one to another what can lead to: |
34 | -- 1. making an open wire with greater length out of several |
35 | -- open wires |
36 | -- 2. making closed wire out of several open wires |
37 | -- |
38 | -- The connecting open wires is performed with a user-given |
39 | -- tolerance. |
40 | -- |
41 | -- When connecting several open wires into one wire their previous |
42 | -- end vertices are replaced with new connecting vertices. After |
43 | -- that all the edges in the shape sharing previous vertices inside |
44 | -- the shape are updated with new vertices. Thus source shape can |
45 | -- be modified. |
46 | -- |
47 | -- Since interface of this class is the same as one of |
48 | -- ShapeAnalysis_FreeBounds refer to its CDL for details. |
49 | |
50 | |
51 | uses |
52 | Shape from TopoDS, |
53 | Compound from TopoDS |
54 | |
55 | is |
56 | |
57 | Create returns FreeBounds from ShapeFix; |
58 | ---Purpose: Empty constructor |
59 | |
60 | Create (shape : Shape from TopoDS; |
61 | sewtoler : Real; |
62 | closetoler : Real; |
63 | splitclosed: Boolean; |
64 | splitopen : Boolean) |
65 | returns FreeBounds from ShapeFix; |
66 | ---Purpose: Builds forecasting free bounds of the <shape> and connects |
67 | -- open wires with tolerance <closetoler>. |
68 | -- <shape> should be a compound of faces. |
69 | -- Tolerance <closetoler> should be greater than tolerance |
70 | -- <sewtoler> used for initializing sewing analyzer, otherwise |
71 | -- connection of open wires is not performed. |
72 | |
73 | Create (shape : Shape from TopoDS; |
74 | closetoler : Real; |
75 | splitclosed: Boolean; |
76 | splitopen : Boolean) |
77 | returns FreeBounds from ShapeFix; |
78 | ---Purpose: Builds actual free bounds of the <shape> and connects |
79 | -- open wires with tolerance <closetoler>. |
80 | -- <shape> should be a compound of shells. |
81 | |
82 | GetClosedWires (me) returns Compound from TopoDS; |
83 | ---Purpose: Returns compound of closed wires out of free edges. |
84 | ---C++: inline |
85 | ---C++: return const & |
86 | |
87 | GetOpenWires (me) returns Compound from TopoDS; |
88 | ---Purpose: Returns compound of open wires out of free edges. |
89 | ---C++: inline |
90 | ---C++: return const & |
91 | |
92 | GetShape (me) returns Shape from TopoDS; |
93 | ---Purpose: Returns modified source shape. |
94 | ---C++: inline |
95 | ---C++: return const & |
96 | |
97 | |
98 | ---Level: Internal |
99 | Perform (me: in out) returns Boolean is private; |
100 | |
101 | fields |
102 | |
103 | myWires: Compound from TopoDS; |
104 | myEdges: Compound from TopoDS; |
105 | myShape: Shape from TopoDS; |
106 | |
107 | myShared : Boolean; |
108 | mySewToler : Real; |
109 | myCloseToler : Real; |
110 | mySplitClosed: Boolean; |
111 | mySplitOpen : Boolean; |
112 | |
113 | end FreeBounds; |