entities including:
<ul>
-<li>\b Node — 0D element of a mesh presented by a point with coordinates (x, y, z).</li>
+<li>\b Node — 0D object of a mesh presented by a point with coordinates (x, y, z).</li>
<li>\b Edge — 1D element of a mesh defined by two nodes.</li>
<li>\b Face — 2D element of a mesh defined by three or four edges (closed contour).</li>
<li>\b Volume — 3D element of a mesh defined by several faces.</li>
higher or lower. For example some algorithms may be interested to
retrieve all the faces surrounding a node.
-*/
\ No newline at end of file
+*/
\n MESH modules allows you to work with <b>Quadratic Elements</b>.
-Quadratic Edge in not a straight but a broken line and can be defined
+Quadratic Edge is not a straight but a broken line and can be defined
by three points: first, middle and last. All more complex \b Quadratic
\b Elements differ from ordinary ones in that they consist of Quadratic
Edges.
-*/
\ No newline at end of file
+*/
\n The <b>Aspect Ratio</b> quality criterion for mesh elements reveals
the degree of conformity of a mesh element to the regular element of
-its type (with all edges having the same length). The criterion can
-be defined as:
+its type (with all edges having the same length).
-\image html formula3.png
+
- The <b>Aspect Ratio</b> of a \b triangle 2D element consisting of 3
nodes is calculated by the formula:
\image html formula1.png
-- Other element types like quadrangle, pentahedron and hexahedron use
+- Other element types like polyhedron, pentahedron and hexahedron use
the following formula:
\image html formula2.png
<br><b>See Also</b> a sample TUI Script of a
\ref tui_aspect_ratio_3d "Aspect Ratio 3D quality control" operation.
-*/
\ No newline at end of file
+*/
object, if it is set to 0.5 the object is split in two halves; and
\b Rotation (in angle degrees) <b>around X</b> (Y to Z) and <b>around Y</b> (X to
Z). If the <b>Show preview</b> button is on, you can see the clipping plane
-in the <b>Object window</b>.
+in the <b>3D Viewer</b>.
\image html image79.jpg
If the <b>Auto Apply</b> button is on, you can preview the
-cross-section in the <b>Object window</b>.
+cross-section in the <b>3D Viewer</b>.
\image html image99.gif
To get a new object from \b Clipping, click \b Ok.
-*/
\ No newline at end of file
+*/
<ul>
<li>Selecting a mesh which will encapsulate your submesh</li>
<li>Selecting a geometrical object for meshing</li>
-<li>Applying one or several previously
+<li>Applying one or several previously described
\ref about_hypo_page "hypotheses" and
\ref basic_meshing_algos_page "meshing algorithms" which will be used
at computation of this submesh</li>
<br><b>See Also</b> a sample TUI Script of a
\ref tui_construction_submesh "Construct Submesh" operation.
-*/
\ No newline at end of file
+*/
\page extrusion_page Extrusion
-\n Extrusion is a type of surface meshing by generation from
-discretized lines. It is used to build mesh elements of plus one
-dimension than the swept ones. Each swept 1D element produces one or
-more quadrangles (or triangles if one node of a rotated element lays
-on the revolution axis).
+\n Extrusion is used to build mesh elements of plus one
+dimension than the input ones. Any line or planar element can be
+extruded. Line elements will extrude into quadrilateral plane elements.
+Triangular and Quadrilateral plane elements extrude into Pentahedron
+and Hexahedron solids respectively.
<em>To use extrusion:</em>
<ol>
<br><b>See Also</b> a sample TUI Script of an
\ref tui_extrusion "Extrusion" operation.
-*/
\ No newline at end of file
+*/
\page importing_exporting_meshes_page Importing and exporting meshes
\n In MESH there is a functionality allowing importation/exportation
-of meshes from \b MED and \b UNV (I-DEAS 10) format files.
+of meshes from \b MED, \b UNV (I-DEAS 10), \b DAT (Nastran) and STL format files.
<em>To import a mesh:</em>
<ol>
<li>From the \b File menu choose the \b Import item, from its sub-menu
-select the corresponding format (MED, UNV) of the file containing
+select the corresponding format (MED, UNV and DAT) of the file containing
your mesh.</li>
<li>In the standard <b>Search File</b> dialog box find the file for
importation.</li>
<ol>
<li>Select the object you wish to export.</li>
<li>From the \b File menu choose the \b Export item, from its sub-menu
-select the format (MED, UNV) of the file which will contain your
+select the format (MED, UNV, DAT and STL) of the file which will contain your
exported mesh.</li>
<li>In the standard <b>Search File</b> select a location for the
exported file and enter its name.</li>
<br><b>See Also</b> a sample TUI Script of an \ref tui_export_mesh "Export Mesh" operation.
-*/
\ No newline at end of file
+*/
\page max_element_volume_hypo_page Max Element Volume hypothesis
-\n <b>Max Element Area</b> hypothesis is applied for meshing of 3D objects
+\n <b>Max Element Volume </b> hypothesis is applied for meshing of 3D objects
composing your geometrical object. Definition of this hypothesis
consists of setting the <b>maximum volume</b> of 3D meshing elements
(depending on the chosen meshing algorithm it can be \b hexahedrons or
<br><b>See Also</b> a sample TUI Script of a
\ref tui_max_element_volume "Maximum Element Volume hypothesis" operation.
-*/
\ No newline at end of file
+*/
\image html mergeelems.png
+<ul>
+<li>\b Name is the name of the mesh whose elements will be merged.</li>
+<li>\b Tolerance is a maximum distance between elements sufficient for
+merging.
+<ul>
+<li>\b Detect button generates the list of coincident elements for the given
+\b Tolerance.</li>
+</ul>
+</li>
+<li><b>Coincident elements</b> is a list of groupes of elements for
+merging. All elements of each group will form one after the operation.
+<ul>
+<li>\b Remove button deletes the selected group from the list.</li>
+<li>\b Add button adds to the list a group of elements selected in the
+viewer with pressed "Shift" key.</li>
+<li><b>Select all</b> checkbox selects all groups.</li>
+</ul>
+</li>
+<li><b>Edit selected group</b> list allows editing the selected
+group:
+<br><br>
+\image html add.gif
+<center>adds to the group the element selected in the viewer.</center>
+<br>
+\image html remove.gif
+<center>removes from the group the selected element.</center>
+<br>
+\image html sort.gif
+<center>moves the selected element to the first position in the
+group. This means that all other elements will be merged into this
+one.</center><br>
+</li>
+</ul>
+</li>
+<li>To confirm your choice click \b OK or \b Apply button.</li>
+</ol>
+
In this picture you see a triangle which coincides with one of the
elements of the mesh. After we apply <b>Merge Elements</b> functionality, the
triangle will be completely merged with the mesh.
<br><b>See Also</b> a sample TUI Script of a
\ref tui_merging_elements "Merge Elements" operation.
-*/
\ No newline at end of file
+*/
\page skew_page Skew
\n \b Skew mesh quality criterion reflects the angle between the lines
-that join opposite sides of the element. SKEW is a maximum value of
-all skew angles. This mesh quality criterion can be applied to
-elements composed of 4 and 3 nodes (quadrangles and triangles).
+that join opposite sides of a quadrangle element or the greatesr angle
+between three medians in triangle elements. This mesh quality
+criterion can be applied to elements composed of 4 and 3 nodes
+(quadrangles and triangles).
\image html image27.jpg
<br><b>See Also</b> a sample TUI Script of a
\ref tui_skew "Skew quality control" operation.
-*/
\ No newline at end of file
+*/
fixed. Any other nodes may be additionally fixed.</li>
<li><b>Smoothing Method:</b>
<ul>
-<li>\b Laplacian smoothing pulls a node toward the center of surrounding nodes directly connected to that node along an element edge. Centroidal smoothing pulls a node toward the element-area-weighted centroid of the surrounding elements. Typically, the Laplacian method will produce the mesh with the least element distortion. It is also the faster method.</li>
-<li>\b Centroidal smoothing usually produces a mesh that has more uniform element sizes. Both methods produce good results with "free" meshes.</li>
+<li>\b Laplacian smoothing pulls a node toward the center of
+surrounding nodes directly connected to that node along an element
+edge.
+<li>\b Centroidal smoothing pulls a node toward the
+element-area-weighted centroid of the surrounding elements. </li>
+
+Typically, the Laplacian method will produce the mesh with the least element
+distortion. It is also the faster method.Centroidal smoothing usually
+produces a mesh that has more uniform element sizes. Both methods
+produce good results with "free" meshes.</li>
</ul>
\image html image83.gif
process continues until the maximum number of iterations has been
exceeded, or all elements has aspect ratio less or equal than the
specified one.</li>
-<li><b>Max. aspect ratio</b>.</li>
+<li><b>Max. aspect ratio</b> allows to define the quality at which the
+smoothing algorithm should stop the iterations as the target of the
+operation has been reached.</li>
+<li>When <b>in parametric space</b> radio button is checked, the
+algorithm tries to improve the shape of faces in the parametric space
+of geometrical surfaces on which they are generated, else the shape of
+faces in the 3D space is improved. </li>
</ul>
</li>
<br><b>See Also</b> a sample TUI Script of a
\ref tui_smoothing "Smoothing" operation.
-*/
\ No newline at end of file
+*/
\n First of all see \ref tui_creating_meshes_page "Example of 3d mesh generation",
which is an example of good python script style for Mesh module.
-\n Other examples of python scripts will be also updated soon to use
- smesh package instead of direct usage of idl interface.
<br>
<h2>Construction of a Mesh</h2>
tetra.ExportMED("/tmp/meshMED.med", 0)
\endcode
-*/
\ No newline at end of file
+*/
elements from the list click the \b Remove button. The \b Sort button allows
to sort the list of IDs. The <b>Set filter</b> button allows to apply a
definite filter to selection of triangles.</li>
-<li><b>Apply to all</b> radio button allows to modify the orientation of all
-triangles of the currently displayed mesh or submesh.</li>
+<li><b>Apply to all</b> radio button allows to modify connectivity and
+type of all triangles of the currently displayed mesh or submesh.</li>
<li>\b Criterion menu allows to apply the operation only to those
object which meet the chosen criterion (from the list of Quality
Controls, i.e. Skew, Warping, Minimum Angle, etc.)</li>
<br><b>See Also</b> a sample TUI Script of a
\ref tui_uniting_set_of_triangles "Uniting a Set of Triangles" operation.
-*/
\ No newline at end of file
+*/
presentation parameters and access to other useful options by
right-clicking on the selected mesh.
-\image html image15.jpg
+\image html dialog.png
<ul>
-<li><b>Erase all</b> - allows to hide all objects in the viewer.</li>
+<li><b>Hide all</b> - allows to hide all objects in the viewer.</li>
<li><b>Update</b> - refreshes the presentation of your mesh in the
Object Browser, applying all recent changes. </li>
<li>\ref advanced_mesh_infos_anchor "Advanced Mesh Infos" - provides
<li>\ref clipping_page "Clipping" - allows to create cross-sections of the selected objects.</li>
<li>\ref about_quality_controls_page "Quality Controls" - graphically
presents various information about meshes.</li>
-<li><b>Erase</b> - allows to hide the selected mesh from the viewer.</li>
+<li><b>Hide</b> - allows to hide the selected mesh from the viewer.</li>
<li><b>Display Only</b> -allows to display only the selected mesh, hiding all other from the viewer.</li>
<li><b>Dump view</b> - exports an object from the viewer in bmp, png, jpg or jpeg image format.</li>
<li><b>Change background</b> - allows to redefine the background color. By default it is black.</li>
\page warping_page Warping
+\image html image24.gif
+
\n \b Warping indicates that a face is not planar and is applied only to
2D elements with 4 nodes. This quality control criterion is based on a
projection plane created by:
assigned ?l?. The warp angle is the arcsine of the ratio of the
projection height ?h? to the half edge length ?l?.
-\image html image24.gif
-
<em>To apply the Warping quality criterion to your mesh:</em>
<ol>
<li>Display your mesh in the viewer.</li>
-<li>Choose <b>Controls > Warp</b> or click <em>"Warping angle"</em>
+<li>Choose <b>Controls > Warping Angle</b> or click <em>"Warping angle"</em>
button of the toolbar.
\image html image39.gif
<br><b>See Also</b> a sample TUI Script of a
\ref tui_warping "Warping quality control" operation.
-*/
\ No newline at end of file
+*/
