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

.. only:: html

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

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

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

.. _sphx_glr_examples_holes.py:


Holes
~~~~~~~~~~~~

Example of using TetGen to create a tetrahedral mesh with holes.

.. GENERATED FROM PYTHON SOURCE LINES 8-32



.. image-sg:: /examples/images/sphx_glr_holes_001.png
   :alt: holes
   :srcset: /examples/images/sphx_glr_holes_001.png
   :class: sphx-glr-single-img





.. code-block:: Python


    import pyvista as pv
    import tetgen

    # create a cube with two spheres inside it
    cube = pv.Cube(x_length=2).triangulate()
    sphere1 = pv.Sphere(center=[-0.5, 0.0, 0.0], theta_resolution=16, phi_resolution=16, radius=0.25)
    sphere2 = pv.Sphere(center=[0.5, 0.0, 0.0], theta_resolution=16, phi_resolution=16, radius=0.1)

    # merge the geometries
    mesh = pv.merge([cube, sphere1, sphere2])

    tgen = tetgen.TetGen(mesh)

    # add the center of the spheres as holes
    tgen.add_hole([-0.5, 0.0, 0.0])
    tgen.add_hole([0.5, 0.0, 0.0])

    # tetrahedralize the mesh using TetGen
    nodes, elem = tgen.tetrahedralize(switches="pzq1.4")
    grid = tgen.grid

    # plot a slice to see the holes
    grid.clip(normal="z").plot(show_edges=True)


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

   **Total running time of the script:** (0 minutes 0.756 seconds)


.. _sphx_glr_download_examples_holes.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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