.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "examples/Meshes/Mesh8.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_examples_Meshes_Mesh8.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_examples_Meshes_Mesh8.py:


Mesh8
=====

Meshing of a grooved 3D part with calculation of element quality.

.. GENERATED FROM PYTHON SOURCE LINES 11-118







.. tab-set::



   .. tab-item:: Static Scene



            
     .. image-sg:: /examples/Meshes/images/sphx_glr_Mesh8_001.png
        :alt: Mesh8
        :srcset: /examples/Meshes/images/sphx_glr_Mesh8_001.png
        :class: sphx-glr-single-img
     


   .. tab-item:: Interactive Scene



       .. offlineviewer:: /home/docs/checkouts/readthedocs.org/user_builds/easyfea/checkouts/v1.6.1/docs/examples/Meshes/images/sphx_glr_Mesh8_001.vtksz



.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    Element type: TETRA4
    Ne = 12305, Nn = 3996
    volume = 658.400






|

.. code-block:: Python
   :lineno-start: 12


    from EasyFEA import Display, np, Mesher, ElemType, gmsh, PyVista
    from EasyFEA.Geoms import Point, Circle, Points

    if __name__ == "__main__":
        Display.Clear()

        # ----------------------------------------------
        # Geom
        # ----------------------------------------------
        R = 10
        e = 2
        r = R - e
        h = R * 2 / 3

        meshSize = e / 3

        center = Point()

        circle_ext = Circle(center, R * 2, meshSize)
        circle_int = Circle(center, r * 2, meshSize, True)

        useFillet = circle_int.isHollow
        addCylinder = True
        addBox = True
        addRevolve = True

        # ----------------------------------------------
        # Mesh
        # ----------------------------------------------

        mesher = Mesher(False, False)
        # dim, elemType = 2, ElemType.TRI3
        dim, elemType = 3, ElemType.TETRA4

        factory = mesher._factory

        surfaces = mesher._Surfaces(circle_ext, [circle_int])[0]
        mesher._Extrude(surfaces, [0, 0, R], elemType)
        vol1 = factory.getEntities(3)

        mesher._Synchronize()

        if useFillet:
            surfs = gmsh.model.getBoundary(vol1)
            lines = gmsh.model.getBoundary(surfs, False)
            gmsh.model.occ.fillet([vol1[0][1]], [abs(line[1]) for line in lines], [e / 3])

        if addCylinder:
            cylinder = factory.addCylinder(R + e, 0, h, -2 * R - e, 0, 0, e)
            factory.cut(vol1, [(3, cylinder)])

        if addBox:
            box = factory.addBox(-R / 4, -R - e, R / 2, R / 2, 2 * R + e, R / 2)
            factory.cut(factory.getEntities(3), [(3, box)])

        if addRevolve:
            p1 = Point(R - e / 2, 0, e, r=e / 4)
            p2 = Point(R, 0, e)
            p3 = Point(R, 0, e * 4)
            p4 = Point(R - e / 2, 0, e * 4, r=e / 4)
            contour = Points([p1, p2, p3, p4])
            surf = mesher._Surfaces(contour, [])[0][0]

            rev1 = factory.revolve([(2, surf)], 0, 0, 0, 0, 0, R, np.pi)
            rev2 = factory.revolve([(2, surf)], 0, 0, 0, 0, 0, R, -np.pi)
            factory.cut(factory.getEntities(3), [rev1[1], rev2[1]])

        mesher._Synchronize()

        if meshSize > 0:
            mesher.Set_meshSize(meshSize)

        mesher._Set_PhysicalGroups(
            setPoints=False, setLines=True, setSurfaces=True, setVolumes=False
        )

        mesher._Mesh_Generate(dim, elemType)

        mesh = mesher._Mesh_Get_Mesh()

        # ----------------------------------------------
        # Plot
        # ----------------------------------------------

        print(mesh)

        if dim == 3:
            print(f"volume = {mesh.volume:.3f}")

        plotter = PyVista._Plotter(shape=(1, 2))

        PyVista.Plot_Mesh(mesh, plotter=plotter)

        plotter.subplot(0, 1)
        plotter.add_title("aspect ratio")
        qual = mesh.Get_Quality()
        PyVista.Plot_Elements(mesh, dimElem=1, plotter=plotter, color="k")
        PyVista.Plot(
            mesh,
            qual,
            nodeValues=False,
            cmap="viridis",
            clim=(0, 1),
            plotMesh=True,
            plotter=plotter,
        ).show()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 2.659 seconds)


.. _sphx_glr_download_examples_Meshes_Mesh8.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: Mesh8.ipynb <Mesh8.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: Mesh8.py <Mesh8.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: Mesh8.zip <Mesh8.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_