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<title>Constructing meshes</title>
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<h1>Constructing meshes</h1>

<p class="whs1">Construction of a mesh consists of:</p>

<p class="whs1">&nbsp;</p>

<ul type="disc" class="whs2">
	
	<li class=kadov-p><p class="whs1">Selecting a geometrical 
 object for meshing</p></li>
	
	<li class=kadov-p><p class="whs1">Applying <a href="about_meshing_algorithms.htm">meshing 
 algorithms</a> and <a href="about_hypotheses.htm">hypotheses</a> which 
 will be used at computation of this mesh.</p></li>
</ul>

<p class="whs1">&nbsp;</p>

<p class=TODO>To construct a mesh:</p>

<p class="whs3">1. In the <span style="font-weight: bold;"><B>Mesh 
 </B></span>menu select<span style="font-weight: bold;"><B> Create Mesh </B></span>or 
 click <img src="../image32.gif" width="22px" height="24px" border="0" class="img_whs4"> button in the toolbar. The following dialog box will 
 appear:</p>

<p class="whs3">&nbsp;</p>

<p class="whs5"><img src="../pics/createmesh-inv.png" x-maintain-ratio="TRUE" width="355px" height="296px" border="0" class="img_whs6"></p>

<p class="whs5">&nbsp;</p>

<p class="whs3">2. For example, you need to mesh a 3d object. 
 </p>

<p class="whs3">First, type the name for your mesh in the 
 &quot;Name&quot; box, by default, it is &quot;Mesh_1&quot;. Then select 
 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 
 the <img src="../image120.gif" width="34px" height="29px" border="0" class="img_whs8"> &quot;Add&quot; button. </p>

<p class="whs3">Now you can define 1d Algorithm and 1d Hypotheses, 
 which will be applied to the edges of your object. (Note that any object 
 has edges, even if their existence is not apparent, for example, a sphere 
 has 4 edges). Click the &nbsp;<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 
 to define values for the current hypothesis. The use of additional hypotheses 
 is optional (i.e. you may leave &quot;None&quot; in this box). &nbsp;&nbsp;</p>

<p class="whs3">&nbsp;</p>

<p class="whs3">Proceed in the same way with 2d and 3d Algorithms 
 and Hypotheses, note that the choice of hypotheses depends on the algorithm. 
 There must be one Algorithm and one or several Hypotheses for each dimension 
 of your object, otherwise you will not get any mesh at all. Of course, 
 if you wish to mesh a face, which is a 2d object, you don't need to define 
 3d Algorithm and Hypotheses. </p>

<p class="whs3">In the <span style="font-weight: bold;"><B>Object 
 Browser</B></span> the structure of the new mesh will be displayed as follows:</p>

<p class="whs3"><img src="../image88.jpg" width="232px" height="142px" align="right" border="0" class="img_whs11">It contains:</p>

<ul type="disc" class="whs2">
	
	<li class=kadov-p><p class="whs3">a reference to the 
 geometrical object on the basis of which the mesh has been constructed;</p></li>
	
	<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied 
 hypotheses </B></span>folder containing the references to the hypotheses applied 
 to the construction of the mesh;</p></li>
	
	<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied 
 algorithms </B></span>folder containing the references to the algorithms applied 
 to the construction of the mesh.</p></li>
</ul>

<p class="whs3">&nbsp;</p>

<p class="whs3">There is an alternative way to create a mesh 
 on an object simply by clicking <span style="font-weight: bold;"><B>Assign 
 a set of hypotheses </B></span>button and selecting between Automatic Tetrahedralization 
 or Hexahedralization. &nbsp;The 
 program will automatically generate a 3D mesh with the most appropriate 
 settings. In the same way you can apply this functionality for meshing 
 2D objects, in which case 3D algorithms are not applied. </p>

<p class="whs3">&nbsp;</p>

<p class="whs3">3. Now, when everything is ready, select 
 your mesh in the <span style="font-weight: bold;"><B>Object Browser</B></span>. 
 &nbsp;From the 
 <span style="font-weight: bold;"><B>Mesh </B></span>menu select<span style="font-weight: bold;"><B> 
 Compute </B></span>or click <img src="../image28.gif" width="25px" height="24px" border="0" class="img_whs12"> button of the toolbar. </p>

<p class="whs3">&nbsp;</p>

<p class="whs3">Consider trying a sample script for construction 
 of a mesh from our <a href="../constructing_meshes.htm">TUI Scripts</a> 
 section.</p>

<p class="whs3">&nbsp;</p>

<p>&nbsp;</p>

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