3 \page create_explode_page Explode
5 To \b Explode an object into sub-shapes, in the <b>Main Menu</b>
6 select <b>New Entity > Explode</b>. This operation opens the
7 <b>Sub Shapes Selection</b> dialog box.
9 \image html neo-obj1.png
11 To create a list of sub-shapes (vertices, edges, wires etc.) of the
12 given shape using the \b Explode operation, you need to define the <b>Main
13 Object</b>, which will be exploded and the <b>Type of Sub-shapes</b> you wish to
16 The \b Result of the operation will be a List of \b GEOM_Objects
17 (vertexes, edges, wires, faces, shells or solids).
19 Available choices in the <b>Sub Shapes Type</b> combo box depend on the type
20 of selected <b>Main Object</b>:
21 - \b Compound: to extract compounds;
22 - \b Compsolid: to extract compsolids;
23 - \b Solid: to extract solids;
24 - \b Shell: to extract shells;
25 - \b Face: to extract faces;
26 - \b Wire: to extract wires;
27 - \b Edge: to extract edges;
28 - \b Vertex: to extract vertices;
29 - \b Shape: to extract top-level contents of the compound shape;
30 - \b Flat: to extract "flat" contents of the compound shape.
32 Note: "flat" contents means top-level simple-type sub-shapes extracted from
33 the compound object recursively (i.e. there is no compounds in the result).
34 For example, if a compound C1 contains a solid S1 and another compound C2 that
35 contains solids S2 and S3 (see picture below):
36 - Explode operation with \b Shape type given as parameter will return S1 and C2;
37 - Explode operation with \b Flat type given as parameter will return S1, S2 and S3.
39 \image html flat_contents.png
41 Switching on <b>Select Sub-shapes</b> check box allows manual selection of sub-shapes
42 to be extracted from the main object. In this mode the user can select sub-shapes
43 directly in 3D viewer.
45 When <b>Select Sub-shapes</b> check box is switched on, additional \b Filter controls
46 allow to automatically pick up entites which satisfy specified threshold value(s).
47 The numerical functor for each sub-shape that is compared with threshold value(s)
48 is computed according to the shape's topological properties:
49 - length for edges and wires
50 - area for faces and shells
51 - volume for solids, compounds, compsolids
53 Filtering capabilities are not available for vertices.
55 In order to filter out some entities:
56 - Activate one or two filtering controls by switching on corresponding check boxes;
57 - Select required threshold comparator type; the following choices are available:
58 - <b>Less Than</b> or <b>Equal or Less Than</b> for the first comparator;
59 - <b>Greater Than</b> or <b>Equal or Greater Than</b> for the second comparator;
60 - Enter required threshold value (values);
61 - Press \b Apply button in the \b Filter group.
63 The entities which satisfy entered filtering parameters will be automatically highlighted
66 Using <b>TUI Commands</b> you can perform this operation in a
68 - <em>geompy.ExtractShapes(Shape, Type, isSorted)</em> explodes a
69 Shape into sub-shapes of a given Type and returns a List of sub-shapes.
70 This method does not return the Shape itself if it matches the
72 - <em>geompy.SubShapeAll(Shape, Type)</em> explodes a Shape on
73 sub-shapes of a given Type and returns a List of sub-shapes.
74 - <em>geompy.SubShapeAllIDs(Shape, Type)</em> explodes a Shape on
75 sub-shapes of a given Type and returns a List of IDs of
77 - <em>geompy.SubShapeAllSortedCentres(Shape, Type)</em> explodes a
78 shape on sub-shapes of a given type and sorts them taking into account
79 their gravity centers, to provide stable order of sub-shapes.
80 It returns a list of sub-shapes.
81 - <em>geompy.SubShapeAllSortedCentresIDs(Shape, Type)</em> explodes
82 a shape on sub-shapes of a given type and sorts them taking into
83 account their gravity centers, to provide stable order of sub-shapes.
84 It returns a List of IDs of sub-shapes.
85 - <em>geompy.SubShape(Shape, Type, ListOfInd)</em> allows to obtain
86 a compound of sub-shapes of the Shape, selected by they indices in a
87 list of all sub-shapes of the given Type. Each index is in the range
88 [1, Nb_Sub-Shapes_Of_Given_Type].
89 - <em>geompy.SubShapeSortedCentres(Shape, Type, ListOfInd)</em>
90 allows to obtain a compound of sub-shapes of the Shape, selected by
91 they indices in sorted list of all sub-shapes of the given Type. Each
92 index is in the range [1, Nb_Sub-Shapes_Of_Given_Type]
94 <b>Arguments: </b>1 SHAPE + 1 type of SubShape.
98 \image html explode.png "A box, exploded into faces"