.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "examples/plot_04_sierpinski_triangle.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_examples_plot_04_sierpinski_triangle.py>`
        to download the full example code

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

.. _sphx_glr_examples_plot_04_sierpinski_triangle.py:


Sierpiński Triangle With Recursive Views
========================================

Matplotview's views support recursive drawing of other views and themselves to a
configurable depth. This feature allows matplotview to be used to generate fractals,
such as a sierpiński triangle as shown in the following example.

.. GENERATED FROM PYTHON SOURCE LINES 9-49



.. image-sg:: /examples/images/sphx_glr_plot_04_sierpinski_triangle_001.png
   :alt: plot 04 sierpinski triangle
   :srcset: /examples/images/sphx_glr_plot_04_sierpinski_triangle_001.png
   :class: sphx-glr-single-img





.. code-block:: default
   :lineno-start: 10


    import matplotlib.pyplot as plt
    import matplotview as mpv
    from matplotlib.patches import PathPatch
    from matplotlib.path import Path
    from matplotlib.transforms import Affine2D

    # We'll plot a white upside down triangle inside of black one, and then use
    # 3 views to draw all the rest of the recursions of the sierpiński triangle.
    outside_color = "black"
    inner_color = "white"

    t = Affine2D().scale(-0.5)

    outer_triangle = Path.unit_regular_polygon(3)
    inner_triangle = t.transform_path(outer_triangle)
    b = outer_triangle.get_extents()

    fig, ax = plt.subplots(1)
    ax.set_aspect(1)

    ax.add_patch(PathPatch(outer_triangle, fc=outside_color, ec=[0] * 4))
    ax.add_patch(PathPatch(inner_triangle, fc=inner_color, ec=[0] * 4))
    ax.set_xlim(b.x0, b.x1)
    ax.set_ylim(b.y0, b.y1)

    ax_locs = [
        [0, 0, 0.5, 0.5],
        [0.5, 0, 0.5, 0.5],
        [0.25, 0.5, 0.5, 0.5]
    ]

    for loc in ax_locs:
        # Here we limit the render depth to 6 levels in total for each zoom view....
        inax = mpv.inset_zoom_axes(ax, loc, render_depth=6)
        inax.set_xlim(b.x0, b.x1)
        inax.set_ylim(b.y0, b.y1)
        inax.axis("off")
        inax.patch.set_visible(False)

    fig.show()

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

   **Total running time of the script:** (0 minutes 4.346 seconds)


.. _sphx_glr_download_examples_plot_04_sierpinski_triangle.py:

.. only:: html

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




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

      :download:`Download Python source code: plot_04_sierpinski_triangle.py <plot_04_sierpinski_triangle.py>`

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

      :download:`Download Jupyter notebook: plot_04_sierpinski_triangle.ipynb <plot_04_sierpinski_triangle.ipynb>`


.. only:: html

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

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