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<h1>Constructing meshes</h1>\r
<li class=kadov-p><p class="whs1">Selecting a geometrical \r
object for meshing</p></li>\r
\r
- <li class=kadov-p><p class="whs1">Applying one or several \r
- previously <a href="about_hypotheses.htm">hypotheses</a> and <a href="about_meshing_algorithms.htm">meshing \r
- algorithms</a> which will be used at computation of this mesh.</p></li>\r
+ <li class=kadov-p><p class="whs1">Applying <a href="about_meshing_algorithms.htm">meshing \r
+ algorithms</a> and <a href="about_hypotheses.htm">hypotheses</a> which \r
+ will be used at computation of this mesh.</p></li>\r
</ul>\r
\r
<p class="whs1"> </p>\r
\r
<p class=TODO>To construct a mesh:</p>\r
\r
-<p class=TODO> </p>\r
-\r
-<p class="whs3">In the <span style="font-weight: bold;"><B>Mesh \r
- </B></span>menu select<span style="font-weight: bold;"><B> Global Hyp. </B></span>or \r
+<p class="whs3">1. In the <span style="font-weight: bold;"><B>Mesh \r
+ </B></span>menu select<span style="font-weight: bold;"><B> Create Mesh </B></span>or \r
click <img src="../image32.gif" width="22px" height="24px" border="0" class="img_whs4"> button in the toolbar. The following dialog box will \r
appear:</p>\r
\r
<p class="whs3"> </p>\r
\r
-<p class="whs5"><img src="../image31.gif" width="304px" height="305px" border="0" class="img_whs6"></p>\r
+<p class="whs5"><img src="../pics/createmesh-inv.png" x-maintain-ratio="TRUE" width="370px" height="296px" border="0" class="img_whs6"></p>\r
\r
<p class="whs5"> </p>\r
\r
-<p class="whs3">In the Object Browser the structure of the \r
- new mesh will be displayed as follows:</p>\r
+<p class="whs3">2. For example, you need to mesh a 3d object. \r
+ </p>\r
\r
-<p class="whs3"> </p>\r
+<p class="whs3">First, type the name for your mesh in the \r
+ "Name" box, by default, it is "Mesh_1". Then select \r
+ the object you wish to mesh in the Object Browser <img src="../image119.gif" width="173px" height="88px" border="0" class="img_whs7">and click \r
+ the <img src="../image120.gif" width="34px" height="29px" border="0" class="img_whs8"> "Add" button. </p>\r
\r
-<p class="whs3"><img src="../image44.jpg" width="268px" height="161px" border="0" class="img_whs7"></p>\r
+<p class="whs3">Now you can define 1d Algorithm and 1d Hypotheses, \r
+ which will be applied to the edges of your object. (Note that any object \r
+ has edges, even if their existence is not apparent, for example, a sphere \r
+ has 4 edges). Click the <img src="../image121.gif" width="29px" height="28px" border="0" class="img_whs9"> button to add a hypothesis. Click the <img src="../image122.gif" width="30px" height="29px" border="0" class="img_whs10"> button \r
+ to define values for the current hypothesis. The use of additional hypotheses \r
+ is optional (i.e. you may leave "None" in this box). </p>\r
\r
<p class="whs3"> </p>\r
\r
-<p class="whs3">It contains:</p>\r
+<p class="whs3">Proceed in the same way with 2d and 3d Algorithms \r
+ and Hypotheses, note that the choice of hypotheses depends on the algorithm. \r
+ There must be one Algorithm and one or several Hypotheses for each dimension \r
+ of your object, otherwise you will not get any mesh at all. Of course, \r
+ if you wish to mesh a face, which is a 2d object, you don't need to define \r
+ 3d Algorithm and Hypotheses. </p>\r
\r
-<p class="whs3"> </p>\r
+<p class="whs3">In the <span style="font-weight: bold;"><B>Object \r
+ Browser</B></span> the structure of the new mesh will be displayed as follows:</p>\r
+\r
+<p class="whs3"><img src="../image88.jpg" width="232px" height="142px" align="right" border="0" class="img_whs11">It contains:</p>\r
\r
<ul type="disc" class="whs2">\r
\r
to the construction of the mesh.</p></li>\r
</ul>\r
\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3">There is an alternative way to create a mesh \r
+ on an object simply by clicking <span style="font-weight: bold;"><B>Assign \r
+ a set of hypotheses </B></span>button and selecting between Automatic Tetrahedralization \r
+ or Hexahedralization. The \r
+ program will automatically generate a 3D mesh with the most appropriate \r
+ settings. In the same way you can apply this functionality for meshing \r
+ 2D objects, in which case 3D algorithms are not applied. </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3">3. Now, when everything is ready, select \r
+ your mesh in the <span style="font-weight: bold;"><B>Object Browser</B></span>. \r
+ From the \r
+ <span style="font-weight: bold;"><B>Mesh </B></span>menu select<span style="font-weight: bold;"><B> \r
+ Compute </B></span>or click <img src="../image28.gif" width="25px" height="24px" border="0" class="img_whs12"> button of the toolbar. The Mesh \r
+ Computation information box appears.</p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3"><img src="../pics/meshcomputationsucceed.png" x-maintain-ratio="TRUE" width="457px" height="486px" border="0" class="img_whs13"></p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3">If the mesh computation failed, the information \r
+ about the cause of the failure is provided. </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3"><img src="../pics/meshcomputationfail.png" x-maintain-ratio="TRUE" width="564px" height="402px" border="0" class="img_whs14"> </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3">After you select the error, <span style="font-weight: bold;"><B>Show \r
+ Subshape</B></span> button allows visualizing the mesh elements that cause \r
+ it</p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3"><img src="../pics/failed_computation.png" x-maintain-ratio="TRUE" width="260px" height="270px" border="0" class="img_whs15"> </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3"><span style="font-weight: bold;"><B>Publish \r
+ Subshape</B></span> button allows importing it in a separate MED or UNV file. \r
+ </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<table x-use-null-cells width="67.18%" cellspacing="0" class="whs16">\r
+<col class="whs17">\r
+<col class="whs18">\r
+\r
+<tr valign="top" class="whs19">\r
+<td width="65.545%" class="whs20">\r
+<p class="whs21"><span style="font-weight: bold;"><B>Note:</B></span> \r
+ It is possible to define a 1D or a 2D mesh in a python script and then \r
+ use such submeshes in the construction of a 3D mesh. For this, there exist \r
+ two algorithms: <span style="font-weight: bold;"><B>Use existing edges</B></span> \r
+ and <span style="font-weight: bold;"><B>Use existing faces</B></span>. They are \r
+ not entirely usable from the GUI, so a mesh created using these algorithms \r
+ should be exported into a python script, edited and then imported into \r
+ the GUI. </td>\r
+<td width="34.455%" class="whs22">\r
+<p><img src="../image162.gif" width="214px" height="240px" border="0" class="img_whs23"></td></tr>\r
+</table>\r
+\r
+<p class="whs24"> </p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p class="whs3">Consider trying a sample script for construction \r
+ of a mesh from our <a href="../constructing_meshes.htm">TUI Scripts</a> \r
+ section.</p>\r
+\r
+<p class="whs3"> </p>\r
+\r
+<p> </p>\r
+\r
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