doc/salome/gui/SMESH/prism_3d_algorithm.htm

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  85 <h1>3D extrusion meshing algorithm</h1>\r
  86 \r
  87 <p>3D extrusion algorithm can be used for meshing prisms, i.e.\r
  88 <span style="font-weight: bold;"><B>3D Shapes</B></span> defined by\r
  89  two opposing faces having the same number of vertices and edges and meshed using the \r
  90  <a href="projection_algorithms.htm">2D Projection</a> algorithm. These \r
  91  two faces should be connected by quadrangle &quot;side&quot; faces.</p>\r
  92 \r
  93 <p><span style="margin-left: 24px;\r
  94                                 margin-top: 0pt;\r
  95                                 margin-bottom: 0pt;">The opposing faces can be meshed with \r
  96  either quadrangles or triangles, while the side faces should be meshed \r
  97  with quadrangles only. </span></p>\r
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  99 <p class="whs1"><img src="image157.gif" width="324px" height="337px" border="0" class="img_whs2"></p>\r
 100 \r
 101 <p class="whs1">&nbsp;</p>\r
 102 \r
 103 <p class="whs3">As you can see, the <span style="font-weight: bold;"><B>3D extrusion</B></span> \r
 104  algorithm permits to build and to have in the same 3D mesh such elements \r
 105  as hexahedrons, prisms and polyhedrons.</p>\r
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