.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "examples/Meshes/Mesh9.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_Mesh9.py>`
        to download the full example code.

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

.. _sphx_glr_examples_Meshes_Mesh9.py:


Mesh9
=====

Meshing of a perforated plate with a structured mesh.

.. GENERATED FROM PYTHON SOURCE LINES 11-115







.. tab-set::



   .. tab-item:: Static Scene



            
     .. image-sg:: /examples/Meshes/images/sphx_glr_Mesh9_001.png
        :alt: Mesh9
        :srcset: /examples/Meshes/images/sphx_glr_Mesh9_001.png
        :class: sphx-glr-single-img
     


   .. tab-item:: Interactive Scene



       .. offlineviewer:: /home/docs/checkouts/readthedocs.org/user_builds/easyfea/checkouts/v1.7.0/docs/examples/Meshes/images/sphx_glr_Mesh9_001.vtksz






.. tab-set::



   .. tab-item:: Static Scene



            
     .. image-sg:: /examples/Meshes/images/sphx_glr_Mesh9_002.png
        :alt: Mesh9
        :srcset: /examples/Meshes/images/sphx_glr_Mesh9_002.png
        :class: sphx-glr-single-img
     


   .. tab-item:: Interactive Scene



       .. offlineviewer:: /home/docs/checkouts/readthedocs.org/user_builds/easyfea/checkouts/v1.7.0/docs/examples/Meshes/images/sphx_glr_Mesh9_002.vtksz



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

 .. code-block:: none

    

    ============= Init GMSH interface =============
    Meshing with gmsh (3.625 ms)
    Construct mesh object (31.034 ms)

    Element type: QUAD4
    Ne = 200, Nn = 240






|

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


    from EasyFEA import Display, np, Mesher, ElemType, PyVista
    from EasyFEA.Geoms import Point, Circle, Points, Line, CircleArc, Contour

    if __name__ == "__main__":
        dim = 2

        if dim == 2:
            elemType = ElemType.QUAD4
        else:
            elemType = ElemType.HEXA8

        Display.Clear()

        # ----------------------------------------------
        # Geom
        # ----------------------------------------------
        H = 90
        L = 45
        D = 10
        e = 20

        N = 5
        mS = (np.pi / 4 * D / 2) / N

        # PI for Points
        # pi for gmsh points
        PC = Point(L / 2, H / 2, 0)
        circle = Circle(PC, D, mS)

        P1 = Point()
        P2 = Point(L, 0)
        P3 = Point(L, H)
        P4 = Point(0, H)
        contour1 = Points(
            [
                (P3 + P2) / 2,
                P3,
                (P3 + P4) / 2,
                P4,
                (P4 + P1) / 2,
                P1,
                (P1 + P2) / 2,
                P2,
                (P3 + P2) / 2,
            ],
            mS,
        )

        # ----------------------------------------------
        # Mesh
        # ----------------------------------------------
        mesher = Mesher(False, True, True)
        factory = mesher._factory

        contours1: list[Contour] = []

        for c in range(4):
            pc = circle.center
            contour = circle.Get_Contour()
            pc1 = contour.geoms[c].pt1
            pc2 = contour.geoms[c].pt2
            pc3 = contour.geoms[c].pt3

            p1, p2, p3 = contour1.points[c * 2 : c * 2 + 3]

            cont1 = Contour(
                [Line(pc1, p1), Line(p1, p2), Line(p2, pc3), CircleArc(pc3, pc1, pc)]
            )
            loop1, lines1, points1 = mesher._Loop_From_Geom(cont1)

            cont2 = Contour(
                [Line(pc3, p2), Line(p2, p3), Line(p3, pc2), CircleArc(pc2, pc3, pc)]
            )
            loop2, lines2, points2 = mesher._Loop_From_Geom(cont2)

            surf1 = factory.addSurfaceFilling(loop1)
            surf2 = factory.addSurfaceFilling(loop2)

            mesher._Surfaces_Organize([surf1, surf2], elemType, True, [N] * 4)

            contours1.extend([cont1, cont2])

        PyVista.Plot_Geoms(contours1).show()

        if dim == 3:
            for cont1 in contours1:
                cont2 = cont1.copy()
                cont2.Translate(dz=e)
                # cont2.rotate(np.pi/8, PC.coord)
                mesher._Link_Contours(cont1, cont2, elemType, 3, [N] * 4)

        mesher._Set_PhysicalGroups()

        mesher._Mesh_Generate(dim, elemType)

        mesh = mesher._Mesh_Get_Mesh()

        if len(mesh.orphanNodes) > 0:
            plotter = PyVista.Plot_Nodes(mesh, mesh.orphanNodes)
            plotter.add_title("Orphan nodes detected")
            plotter.show()

        PyVista.Plot_Mesh(mesh).show()


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

   **Total running time of the script:** (0 minutes 0.906 seconds)


.. _sphx_glr_download_examples_Meshes_Mesh9.py:

.. only:: html

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

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

      :download:`Download Jupyter notebook: Mesh9.ipynb <Mesh9.ipynb>`

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

      :download:`Download Python source code: Mesh9.py <Mesh9.py>`

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

      :download:`Download zipped: Mesh9.zip <Mesh9.zip>`


.. only:: html

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

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