Enhance docs on meshing

adtzlr · Sep 2, 2023 · 9fc6e93 · 9fc6e93
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diff --git a/docs/howto/images/fidget_spinner_boundary.png b/docs/howto/images/fidget_spinner_boundary.png
diff --git a/docs/howto/images/fidget_spinner_boundary_faces.png b/docs/howto/images/fidget_spinner_boundary_faces.png
diff --git a/docs/howto/meshgen.rst b/docs/howto/meshgen.rst
@@ -109,6 +109,23 @@ The elementary shapes are combined to create more complex shapes, e.g. a triangu
 ..  image:: images/fidget_spinner.png
     :width: 400px
 
+For quad- and hexahedron-meshes it is possible to extract the boundaries of the mesh by a boundary region.
+
+..  code-block:: python
+
+    boundary = fem.RegionQuadBoundary(mesh)
+    boundary.mesh
+
+..  image:: images/fidget_spinner_boundary.png
+    :width: 400px
+
+..  code-block:: python
+
+    boundary.mesh_faces()
+
+..  image:: images/fidget_spinner_boundary_faces.png
+    :width: 400px
+
 Cylinders
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