X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2F2d_meshing_hypo.doc;h=dd42e9962c130c5b30361c1751e2f5a1643db6ef;hp=6d89e53d57465e4e41653c0e15f696ea7a6a9ea7;hb=6d66c9caa86eca3fd9a3131fef75630408f13876;hpb=0635c9fc80f67d1e5dc0e94ec85f487286a92070

diff --git a/doc/salome/gui/SMESH/input/2d_meshing_hypo.doc b/doc/salome/gui/SMESH/input/2d_meshing_hypo.doc
index 6d89e53d5..dd42e9962 100644
--- a/doc/salome/gui/SMESH/input/2d_meshing_hypo.doc
+++ b/doc/salome/gui/SMESH/input/2d_meshing_hypo.doc
@@ -6,6 +6,7 @@
 <ul>
 <li>\ref max_element_area_anchor "Max Element Area"</li>
 <li>\ref length_from_edges_anchor "Length from Edges"</li>
+<li>\ref hypo_quad_params_anchor "Quadrangle parameters"</li>
 <li>\ref quadrangle_preference_anchor "Quadrangle Preference"</li>
 <li>\ref triangle_preference_anchor "Triangle Preference"</li>
 </ul>
@@ -22,6 +23,8 @@ which will compose the mesh of these 2D faces.
 
 \image html a-maxelarea.png
 
+\n
+
 \image html max_el_area.png "In this example, Max. element area is very small compared to the 1D hypothesis"
 
 <b>See Also</b> a sample TUI Script of a 
@@ -38,6 +41,31 @@ length calculated as an average edge length for a given wire.
 <b>See Also</b> a sample TUI Script of a 
 \ref tui_length_from_edges "Length from Edges" hypothesis operation.
 
+<br>
+\anchor hypo_quad_params_anchor
+<h2>Quadrangle parameters</h2>
+
+<b>Quadrangle parameters</b> is a hypothesis for
+Quadrangle (Mapping), which allows using this algorithm for meshing of
+triangular faces.In this case it is necessary to select the <b>Base vertex</b> 
+used as a degenerated edge.
+
+\image html hypo_quad_params_1.png "A face built from 3 edges"
+
+\image html hypo_quad_params_res.png "The resulting mesh"
+
+This hypothesis can be also used to mesh a segment of a circular face.
+Please, consider that there is a limitation on the selectiion of the degenerated
+vertex for the faces built with the angle > 180 degrees (see the picture).
+
+\image html hypo_quad_params_2.png "3/4 of a circular face"
+
+In this case, selection of a wrong vertex for the <b>Quadrangle parameters</b>
+hypothesis will generate a wrong mesh. The picture below
+shows the good (left) and the bad (right) results of meshing.
+
+\image html hypo_quad_params_res_2.png "The resulting meshes"
+
 <br>
 \anchor quadrangle_preference_anchor
 <h2>Quadrangle Preference</h2>