X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fcartesian_algo.rst;h=76b150e7e484e74be286d56a21cff6146dccd98b;hp=46605bbe409bb60f7e62bb78e076669b5b5618ed;hb=4a2c77515c262f201d74f2bf49a36afb47161edf;hpb=8d297d6698f361d4f2dde723050bcfbaea050920

diff --git a/doc/salome/gui/SMESH/input/cartesian_algo.rst b/doc/salome/gui/SMESH/input/cartesian_algo.rst
index 46605bbe4..76b150e7e 100644
--- a/doc/salome/gui/SMESH/input/cartesian_algo.rst
+++ b/doc/salome/gui/SMESH/input/cartesian_algo.rst
@@ -52,10 +52,15 @@ This dialog allows to define
 	.. centered::
 		Implement Edges switched off to the left and on to the right
 
+* **Create Faces** check-box activates creation on mesh faces.
+* **Consider Shared and Internal Faces** check-box activates treatment of faces shared by solids and internal. By default the algorithm considers only outer boundaries of the geometry.
+* **Apply Threshold to Shared / Internal Faces** check-box activates application of **Threshold** to cells cut by shared and internal faces, that can cause appearance of holes inside the mesh.
 * **Definition mode** allows choosing how Cartesian structured grid is defined. Location of nodes along each grid axis is defined individually:
     
 	* You can specify the **Coordinates** of grid nodes. **Insert** button inserts a node at **Step** distance (negative or positive) from the selected node. **Delete** button removes the selected node. Double click on a coordinate in the list enables its edition. **Note** that node coordinates are measured along directions of axes that can differ from the directions of the Global Coordinate System.
 	* You can define the **Spacing** of a grid as an algebraic formula *f(t)* where *t* is a position along a grid axis normalized at [0.0,1.0]. *f(t)* must be non-negative at 0. <= *t* <= 1. The whole extent of geometry can be divided into ranges with their own spacing formulas to apply; a t varies between 0.0 and 1.0 within each **Range**. **Insert** button divides a selected range into two. **Delete** button adds the selected sub-range to the previous one. Double click on a range in the list enables edition of its right boundary. Double click on a function in the list enables its edition.
+
+.. note:: The actual grid spacing can slightly differ from the defined one. This is done for the best fitting of polyhedrons and for a better mesh quality on the interval boundaries. For example, if a constant **Spacing** is defined along an axis, the actual grid will fill the shape's dimension L along this axis with round number of equal cells: Spacing_actual = L / round( L / Spacing_defined ).
   
 * **Fixed Point** group allows defining an exact location of a grid node in the direction defined by spacing. The following cases are possible: