smesh/doc/gui/input/create_dual_mesh.rst
2022-10-13 14:33:36 +02:00

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.. _create_dual_mesh_page:
****************
Create Dual Mesh
****************
We can create the dual of a Tetrahedron Mesh which will be a polyhedron mesh.
The Mesh is created using MEDCoupling computeDualMesh function.
*To create a dual mesh:*
.. |img| image:: ../images/create_dual_mesh_icon.png
From the contextual menu in the Object Browser of from the **Mesh** menu select
**Create Dual Mesh** or click *"Create Dual Mesh"* button |img| in the toolbar.
The following dialog box will appear:
.. image:: ../images/create_dual_mesh_dlg.png
:align: center
In the dialog:
* specify the mesh for which to create the dual mesh:
* **Select whole mesh** from the study tree. If a mesh was selected before calling function it will be preselected.
* If the mesh is not made of only Tetrahedrons a error message will be displayed and you won't be allowed to go through.
* specify the **New Mesh Name**;
* activate **Project boundary elements on shape** for the boundary points of the
dual mesh to be projected on their associated shape.
* Click **Apply** or **Apply and Close** button to confirm the operation.
----------------------------
Limitations of the dual mesh
----------------------------
Only 2d groups will be transferred to the dual mesh.
If you have convex shape the projection might not improve the mesh.
**See Also** a sample script of :ref:`tui_create_dual_mesh`.