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95 <h1>Constructing meshes</h1>
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97 <p class="whs1">Construction of a mesh consists of:</p>
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99 <p class="whs1"> </p>
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101 <ul type="disc" class="whs2">
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103 <li class=kadov-p><p class="whs1">Selecting a geometrical
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104 object for meshing</p></li>
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106 <li class=kadov-p><p class="whs1">Applying <a href="about_meshing_algorithms.htm">meshing
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107 algorithms</a> and <a href="about_hypotheses.htm">hypotheses</a> which
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108 will be used at computation of this mesh.</p></li>
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111 <p class="whs1"> </p>
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113 <p class=TODO>To construct a mesh:</p>
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115 <p class="whs3">1. In the <span style="font-weight: bold;"><B>Mesh
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116 </B></span>menu select<span style="font-weight: bold;"><B> Create Mesh </B></span>or
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117 click <img src="../image32.gif" width="22px" height="24px" border="0" class="img_whs4"> button in the toolbar. The following dialog box will
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120 <p class="whs3"> </p>
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122 <p class="whs5"><img src="../pics/createmesh-inv.png" x-maintain-ratio="TRUE" width="355px" height="296px" border="0" class="img_whs6"></p>
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124 <p class="whs5"> </p>
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126 <p class="whs3">2. For example, you need to mesh a 3d object.
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129 <p class="whs3">First, type the name for your mesh in the
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130 "Name" box, by default, it is "Mesh_1". Then select
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131 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
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132 the <img src="../image120.gif" width="34px" height="29px" border="0" class="img_whs8"> "Add" button. </p>
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134 <p class="whs3">Now you can define 1d Algorithm and 1d Hypotheses,
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135 which will be applied to the edges of your object. (Note that any object
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136 has edges, even if their existence is not apparent, for example, a sphere
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137 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
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138 to define values for the current hypothesis. The use of additional hypotheses
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139 is optional (i.e. you may leave "None" in this box). </p>
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141 <p class="whs3"> </p>
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143 <p class="whs3">Proceed in the same way with 2d and 3d Algorithms
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144 and Hypotheses, note that the choice of hypotheses depends on the algorithm.
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145 There must be one Algorithm and one or several Hypotheses for each dimension
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146 of your object, otherwise you will not get any mesh at all. Of course,
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147 if you wish to mesh a face, which is a 2d object, you don't need to define
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148 3d Algorithm and Hypotheses. </p>
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150 <p class="whs3">In the <span style="font-weight: bold;"><B>Object
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151 Browser</B></span> the structure of the new mesh will be displayed as follows:</p>
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153 <p class="whs3"><img src="../image88.jpg" width="232px" height="142px" align="right" border="0" class="img_whs11">It contains:</p>
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155 <ul type="disc" class="whs2">
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157 <li class=kadov-p><p class="whs3">a reference to the
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158 geometrical object on the basis of which the mesh has been constructed;</p></li>
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160 <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
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161 hypotheses </B></span>folder containing the references to the hypotheses applied
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162 to the construction of the mesh;</p></li>
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164 <li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
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165 algorithms </B></span>folder containing the references to the algorithms applied
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166 to the construction of the mesh.</p></li>
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169 <p class="whs3"> </p>
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171 <p class="whs3">There is an alternative way to create a mesh
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172 on an object simply by clicking <span style="font-weight: bold;"><B>Assign
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173 a set of hypotheses </B></span>button and selecting between Automatic Tetrahedralization
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174 or Hexahedralization. The
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175 program will automatically generate a 3D mesh with the most appropriate
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176 settings. In the same way you can apply this functionality for meshing
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177 2D objects, in which case 3D algorithms are not applied. </p>
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179 <p class="whs3"> </p>
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181 <p class="whs3">3. Now, when everything is ready, select
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182 your mesh in the <span style="font-weight: bold;"><B>Object Browser</B></span>.
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184 <span style="font-weight: bold;"><B>Mesh </B></span>menu select<span style="font-weight: bold;"><B>
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185 Compute </B></span>or click <img src="../image28.gif" width="25px" height="24px" border="0" class="img_whs12"> button of the toolbar. </p>
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187 <p class="whs3"> </p>
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189 <p class="whs3">Consider trying a sample script for construction
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190 of a mesh from our <a href="../constructing_meshes.htm">TUI Scripts</a>
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193 <p class="whs3"> </p>
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