doc/salome/gui/SMESH/files/cutting_quadrangles.htm

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 104 <h1>Cutting quadrangles</h1>
 105
 106 <p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> This operation allows to cut one or several quadrangle
 107  elements by addition of a supplementary edge which will connect two opposite
 108  corners. </p>
 109
 110 <p>&nbsp;</p>
 111
 112 <p class=TODO>To cut quadrangles:</p>
 113
 114 <p class="whs2">&nbsp;</p>
 115
 116 <p class="whs2">1. Display a mesh or a submesh in the 3D
 117  viewer.</p>
 118
 119 <p class="whs2">2. In the <span style="font-weight: bold;"><B>Modification
 120  </B></span>menu select the <span style="font-weight: bold;"><B>Cutting of quadrangles
 121  </B></span>item or click <img src="../image82.gif" width="25px" height="22px" border="0" class="img_whs3"> button in the toolbar. The following
 122  dialog box will appear:</p>
 123
 124 <p>&nbsp;</p>
 125
 126 <p class="whs2"><img src="../pics/a-cuttingofquadrangles.png" x-maintain-ratio="TRUE" width="306px" height="525px" border="0" class="img_whs4"></p>
 127
 128 <p>&nbsp;</p>
 129
 130 <ul type="disc" class="whs5">
 131
 132         <li class=kadov-p><p class="whs6">The
 133  main list<span style="font-weight: bold;"> <B></B></span>contains the list of
 134  quadrangles. You can click on an quadrangle in the 3D viewer and it will
 135  be highlighted (lock Shift keyboard button to select several quadrangles).
 136  <span style="margin-left: 0px; font-weight: bold;"><B>Click Add </B></span><span
 137  style="margin-left: 0px;">button and the ID of this quadrangle will be
 138  added to the list. To remove a selected element or elements from the list
 139  click </span><span style="margin-left: 0px; font-weight: bold;"><B>Remove
 140  </B></span><span style="margin-left: 0px;">button. </span><span style="margin-left: 0px; font-weight: bold;"><B>Sort
 141  list </B></span><span style="margin-left: 0px;">button allows to sort the
 142  list of IDs. </span><span style="margin-left: 0px; font-weight: bold;"><B>Filter
 143  </B></span><span style="margin-left: 0px;">button allows to apply a definite
 144  filter to the selection of quadrangles.</span></p></li>
 145
 146         <li class=kadov-p><p class="whs6"><span
 147  style="font-weight: bold;"><B>Apply to all </B></span>radio button allows to
 148  modify the orientation of all quadrangles of the currently displayed mesh
 149  or submesh.</p></li>
 150
 151         <li class=kadov-p><p class="whs7">Preview
 152  - <span style="font-weight: normal;">provides a preview of cutting in
 153  the viewer.</span> </p></li>
 154
 155         <li class=kadov-p><p class="whs8">Criterion</p></li>
 156
 157         <li class=kadov-p><p class="whs6"><span
 158  style="font-weight: bold;"><B>Use diagonal 1-3 </B></span>and<span style="font-weight: bold;"><B>
 159  Use diagonal 2-4 </B></span>&nbsp;allows
 160  to specify the opposite corners which will be connected by the cutting
 161  edge.</p></li>
 162
 163         <li class=kadov-p><p class="whs7">Use
 164  numeric factor - <span style="margin-left: 40px; font-weight: normal;">&nbsp;allows
 165  to apply the operation only to those objects which meet the chosen criterion
 166  (from the list of Quality Controls, i.e. Skew, Warping, Minimum Angle,
 167  etc.)</span></p></li>
 168
 169         <li class=kadov-p><p class="whs9"><span style="font-weight: bold;"><B>Select
 170  from -</B></span> allows to choose a submesh or an existing group whose quadrangle
 171  elements will be automatically added to the list.</p></li>
 172 </ul>
 173
 174 <p class="whs2">&nbsp;</p>
 175
 176 <p class="whs2">3. Click the <span style="font-weight: bold;"><B>Apply
 177  </B></span>or <span style="font-weight: bold;"><B>OK </B></span>button to confirm
 178  the operation.</p>
 179
 180 <p class="whs2">&nbsp;</p>
 181
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 183 <col class="whs11">
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 185
 186 <tr valign="top" class="whs12">
 187 <td width="50%" class="whs13">
 188 <p><img src="../image52.jpg" width="353px" height="300px" border="0" class="img_whs14"></td>
 189 <td width="50%" class="whs15">
 190 <p><img src="../image51.jpg" width="353px" height="300px" border="0" class="img_whs14"></td></tr>
 191 </table>
 192
 193 <p class="whs9">&nbsp;</p>
 194
 195 <p>&nbsp;&nbsp;<span style="font-weight: bold;"><B>See
 196  Also</B></span> a sample TUI Script of a <a href="../modifying_meshes.htm#bookmark7">Cutting
 197  Quadrangles</a> operation. &nbsp;</p>
 198
 199 <p>&nbsp;</p>
 200
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