X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fconstructing_submeshes.doc;h=d88161c44bc9aa554aa636b12e869185ec44643d;hp=a17569f7cb9188541ad3df343491f3b68bc8e27e;hb=83811dbaaef9bb88b6ed0c5fe83fe1ab68d8d436;hpb=0635c9fc80f67d1e5dc0e94ec85f487286a92070 diff --git a/doc/salome/gui/SMESH/input/constructing_submeshes.doc b/doc/salome/gui/SMESH/input/constructing_submeshes.doc index a17569f7c..d88161c44 100644 --- a/doc/salome/gui/SMESH/input/constructing_submeshes.doc +++ b/doc/salome/gui/SMESH/input/constructing_submeshes.doc @@ -1,55 +1,105 @@ /*! -\page constructing_submeshes_page Constructing submeshes - -Submesh is a mesh on a geometrical subobject created with algorithms -and/or hypotheses other than the algorithms and hypotheses assigned to -the parent mesh on the parent object. -

-If a geometrical subobject belongs to several geometrical objects -having different meshes or submeshes, it will be meshed with the -hypotheses of a submesh of a lower dimension.
-For example, a face of a box is meshed with a submesh using algorithms +\page constructing_submeshes_page Constructing sub-meshes + +Sub-mesh is a mesh on a geometrical sub-object (sub-shape) used to assign +different meshing algorithms and/or hypotheses than the algorithms and +hypotheses assigned to the parent mesh on the parent geometrical +object, that allows getting a local mesh refinement. + +A sub-shape to create a sub-mesh on should be retrieved from the shape +of the parent mesh in one of the following ways: + +If a geometrical sub-object belongs to several geometrical objects +having different meshes or sub-meshes, it will be meshed with the +hypotheses of a sub-mesh of a lower dimension.
+For example, a face of a box is meshed with a sub-mesh using algorithms and hypotheses other than the parent mesh on the whole box. The face and the box share four edges, which will be meshed with algorithms and -hypotheses of the submesh on the face, because the face is a 2D object +hypotheses of the sub-mesh on the face, because the face is a 2D object while the box is a 3D object.
If the dimensions are the same, an arbitrary algorithm/hypothesis will be used. This means that an edge shared by two faces each having - its own different submesh, will be meshed using algorithms and - hypotheses of any of the two, chosen randomly.
+ its own different sub-mesh, will be meshed using algorithms and + hypotheses of any of the two, chosen randomly. This indeterminacy can + be fixed by defining \ref submesh_order_anchor "Sub-mesh priority". The + default sub-meshes priority is such that multi-dimensional algorithms + are processed first. +
-\n Construction of a submesh consists of: +\n Construction of a sub-mesh consists of: -
To construct a submesh: +
To construct a sub-mesh: \par -From the \b Mesh menu select Create Submesh or click "Create +From the \b Mesh menu select Create Sub-mesh or click "Create Sum-mesh" button in the toolbar. -\image html image33.gif -
"Create Submesh" button
+
+ \image html image33.gif + "Create Sub-mesh" button +
\par The following dialog box will appear: +\par \image html createmesh-inv2.png \par It allows to define the \b Name, the parent \b Mesh and the \b Geometry (e.g. a face if the parent mesh has been built on box) of the -submesh. You can define algorithms and hypotheses in the same way as +sub-mesh. You can select meshing algorithms and hypotheses in the same way as in \ref constructing_meshes_page "Create mesh" menu. \par -In the Object Browser the structure of the new submesh will be +\anchor subshape_by_mesh_elem +If the parent mesh is already computed, then you can define the +\b Geometry by picking mesh elements computed on a sub-shape of interest +in the 3D Viewer, i.e. you do not have to extract this sub-shape +in Geometry module beforehand. To start element selection, press \a +Selection button to the right of \b Geometry label. If this button is +already down, then click it to release and then click it again. The +following pop-up menu allowing to choose a way of geometry definition will +appear. + +\par +\image html choose_geom_selection_way.png + +\par +Direct geometry selection enables selecting the sub-shape in the Object +Browser. +Find geometry by mesh element selection activates the following dialog. + +\par +\image html find_geom_by_mesh_elem.png + +\par +In this dialog, Element Type defines a kind of element to pick in the +Viewer. +Instead of picking an element in the Viewer, you can type its +ID in Element ID field. + Geometry name field allows defining a name of the sub-shape, +with which the sub-shape will appear in the Object Browser (if not yet +there). + +\par +In the Object Browser the structure of the new sub-mesh will be displayed as follows: \image html image10.jpg @@ -57,14 +107,16 @@ displayed as follows: \par It contains:
See Also a sample TUI Script of a -\ref tui_construction_submesh "Construct Submesh" operation. +\ref tui_construction_submesh "Construct Sub-mesh" operation. */