3 \page symmetry_page Symmetry
5 \n This geometrical operation allows to perform a symmetrical copy of
6 your mesh or some of its elements.
8 <em>To create a symmetrical copy:</em>
11 <li>From the \b Modification menu choose \b Transformation -> \b Symmetry item or click
12 <em>"Symmetry"</em> button in the toolbar.
14 \image html symmetry.png "Symmetry button"
16 One of the following dialogs will appear:
18 It is possible to mirror a mesh or some of its elements through:
19 \image html symmetry1.png "a point" <br>
20 \image html symmetry2.png "an axis" <br>
21 \image html symmetry3.png "a plane (defined by a point and a normal to the plane)"
27 <li>specify the elements for the symmetry operation:
30 <li><b>Select the whole mesh, submesh or group</b> activating this
32 <li>choose mesh elements with the mouse in the 3D Viewer. It is
33 possible to select a whole area with a mouse frame; or</li>
34 <li>input the element IDs directly in <b>ID Elements</b> field. The
35 selected elements will be highlighted in the viewer; or</li>
36 <li>apply Filters. <b>Set Filter</b> button allows to apply a
37 \ref filtering_elements "filter" to the selection of elements.</li>
41 <li>depending on the nature of the mirror object:
43 <li>if the mesh is mirrored through a point, specify the coordinates
44 of the point, either directly or by picking a mesh node;</li>
45 <li>if the mesh is mirrored through an axis:
47 <li>specify the coordinates of the start \b Point of the axis, either
48 directly or by picking a mesh node;</li>
49 <li>specify the components of axis \b Vector, either directly or by
50 picking a mesh node, in which case \b Vector is defined as a shift
51 between the \b Point and the node;</li>
55 <li>if the mesh is mirrored through a plane:
57 <li>specify the cooordinates of the \b Point lying on the plane,
58 either directly or by picking a mesh node;</li>
59 <li>specify the components of plane \b Normal, either directly or by
60 picking a mesh node, in which case \b Normal is defined as a shift
61 between the \b Point and the node.</li>
65 <li>specify the conditions of symmetry operation:
67 <li>activate <b>Move elements</b> radio button to change location of
68 the selected elements within the current mesh;</li>
69 <li>activate <b>Copy elements</b> radio button to duplicate the
70 selected elements at the new location within the current mesh;</li>
71 <li>activate <b>Create as new mesh</b> radio button to create new
72 element in a new mesh; the new mesh appears in the Object Browser
73 with the default name MeshName_mirrored (it is possible to change
74 this name in the adjacent box);</li>
75 <li>activate <b> Copy groups </b> checkbox to put new mesh enities
76 into new groups if source entities belongs to some groups. New
77 groups are named by pattern "<old group name>_mirrored".</li>
81 <li>activate <b>Preview</b> checkbox to show the result of
82 transformation in the viewer;</li>
83 <li>click \b Apply or <b> Apply and Close</b> button to confirm the
89 <br><b>See Also</b> a sample TUI Script of a
90 \ref tui_symmetry "Symmetry" operation.