X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fghs3d_hypo.doc;h=eb4b981b65b88bb212bf12111fe486223a77941f;hb=01d2cde96d919549ca919dd51203b67548680d92;hp=414e342fa454ba5e5681ced54abf96df445dbf0c;hpb=0635c9fc80f67d1e5dc0e94ec85f487286a92070;p=modules%2Fsmesh.git

diff --git a/doc/salome/gui/SMESH/input/ghs3d_hypo.doc b/doc/salome/gui/SMESH/input/ghs3d_hypo.doc
index 414e342fa..eb4b981b6 100644
--- a/doc/salome/gui/SMESH/input/ghs3d_hypo.doc
+++ b/doc/salome/gui/SMESH/input/ghs3d_hypo.doc
@@ -5,6 +5,8 @@
 \n GHS3D Parameters hypothesis works only with <b>Tetrahedron (GHS3D)</b> 
 algorithm. This algorithm is a commercial software.
 
+<h1>General parameters</h1>
+
 \image html ghs3d_parameters_basic.png
 
 <ul>
@@ -21,6 +23,8 @@ optimization level: none, light, medium or strong. Higher level of
 optimisation provides better mesh, but can be time-consuming.
 </li>
 
+<h1>Advanced parameters</h1>
+
 \image html ghs3d_parameters_advanced.png
 
 <li><b>Maximum memory size</b> - launches ghs3d software with
@@ -52,6 +56,20 @@ together with the characteristics of the final mesh.
 <li><b>To create new nodes</b> - if this option is checked off, ghs3d
 tries to create tetrahedrons using only the nodes of the 2D mesh.</li>
 
+<li><b>To remove the initial central point</b> TetMesh-GHS3D adds an internal point 
+at the gravity centre of the bounding box to speed up and to simplify 
+the meshing process. However, it is possible to refrain from creating 
+this point by using the command line option -no initial central point. This can be
+particularly useful to generate a volume mesh without internal points at all and in some rare cases
+at the boundary regeneration phase when it is impossible to proceed
+with the standard options
+(for example, when one dimension of the domain is more than 20 times greater than the other two).
+Use this option if the boundary regeneration has failed with the standard parameters and before using
+the recovery version (command line option -C).
+Note: when using this option, the speed of the meshing process may
+decrease, and the quality may change.
+Note: the boundary regeneration may fail with this option, in some rare cases.</li>
+
 <li><b>To use boundary recovery version</b> - enables using a
 boundary recovery module which tries to
 create volume meshes starting from very poor quality surface meshes
@@ -61,9 +79,38 @@ resulting volume mesh will however most likely have a very poor
 quality (poor aspect ratio of elements, tetrahedra with a very small
 positive volume).</li>
 
-<li><b>Option as text</b> - allows input of any text as command line
-for ghs3d. This allows the input of advanced options in a free from. </li>
+<li><b>To use FEM correction</b> - Applies finite-element correction by 
+replacing overconstrained elements where it is possible. At first the process 
+slices the overconstrained edges and at second the overconstrained 
+facets. This ensures that there are no edges with two boundary
+vertices and that there are no facets with three boundary vertices. TetMesh-GHS3D gives the initial 
+and final overconstrained edges and facets. It also gives the facets
+which have three edges on the boundary.
+Note: when using this option, the speed of the meshing process may 
+decrease, quality may change, and the smallest volume may be smaller.
+By default, the FEM correction is not used.</li>
+
+<li><b>Option as text</b> - allows to input in the command line any text
+for ghs3d, for example, advanced options. </li>
+
+</ul>
+
 
+<h1>Enforced vertices</h1>
+
+\image html ghs3d_enforced_vertices.png
+
+GHS3D algorithm can locally make the mesh finer. It is possible to define enforced vertices in the volume where the mesh will be detailed.
+
+A node will be created at the enforced vertex coordinates. There is no need to create a vertex in CAD.
+
+An enforced vertex is defined by:
+<ul>
+<li>The (x,y,z) cartesian coordinates</li>
+<li>A constant physical size</li>
 </ul>
 
-*/
\ No newline at end of file
+<br><b>See Also</b> a sample TUI Script of the \ref tui_ghs3d "creation of a Ghs3D hypothesis", including enforced vertices.
+
+
+*/