X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Faspect_ratio_3d.rst;fp=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Faspect_ratio_3d.rst;h=2f25b1727f7ff88755654df44add94e694ca506f;hb=f0f67c0b47e58361bc50c7169734da604fbfca01;hp=0000000000000000000000000000000000000000;hpb=f6825d843153c333e95e1345ef7c7fc2d0fe5698;p=modules%2Fsmesh.git

diff --git a/doc/salome/gui/SMESH/input/aspect_ratio_3d.rst b/doc/salome/gui/SMESH/input/aspect_ratio_3d.rst
new file mode 100644
index 000000000..2f25b1727
--- /dev/null
+++ b/doc/salome/gui/SMESH/input/aspect_ratio_3d.rst
@@ -0,0 +1,38 @@
+.. _aspect_ratio_3d_page:
+
+***************
+Aspect ratio 3D
+***************
+
+The **Aspect Ratio 3D** mesh quality criterion calculates the same parameter as the :ref:`aspect_ratio_page` criterion, but it is applied to 3D mesh elements: tetrahedrons, pentahedrons, hexahedrons, etc.
+
+* The **Aspect Ratio** of a **tetrahedron** 3D element defined by vertices {a,b,c,d } is calculated by the formula:
+
+	.. image:: ../images/formula1.png
+		:align: center
+
+* Other element types like polyhedron, pentahedron and hexahedron use the following formula:
+
+	.. image:: ../images/formula2.png
+		:align: center
+
+**To apply the Aspect Ratio 3D quality criterion to your mesh:**
+
+#. Display your mesh in the viewer.
+#. Choose **Controls > Volume Controls > Aspect Ratio 3D** or click **"Aspect Ratio 3D"** button of the toolbar.
+
+	
+	.. image:: ../images/image144.png
+		:align: center
+
+	.. centered::
+		"Aspect Ratio 3D" button
+
+	Your mesh will be displayed in the viewer with its elements colored according to the applied mesh quality control criterion:
+
+	.. image:: ../images/image86.jpg
+		:align: center
+
+
+**See Also** a sample TUI Script of a :ref:`tui_aspect_ratio_3d` operation. 
+