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

.. only:: html

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

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

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

.. _sphx_glr__gallery_image_image_reshaping.py:


Image reshaping
===============

An example that shows replacement of the image data with new data of a different shape. Under the hood, this creates a
new buffer and a new array of Textures on the GPU that replace the older Textures. Creating a new buffer and textures
has a performance cost, so you should do this only if you need to or if the performance drawback is not a concern for
your use case.

Note that the vmin-vmax is reset when you replace the buffers.

.. GENERATED FROM PYTHON SOURCE LINES 12-50



.. image-sg:: /_gallery/image/images/sphx_glr_image_reshaping_001.webp
   :alt: image reshaping
   :srcset: /_gallery/image/images/sphx_glr_image_reshaping_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python


    # test_example = false


    import numpy as np
    import fastplotlib as fpl

    # create some data, diagonal sinusoidal bands
    xs = np.linspace(0, 2300, 2300, dtype=np.float16)
    full_data = np.vstack([np.cos(np.sqrt(xs + (np.pi / 2) * i)) * i for i in range(2_300)])

    figure = fpl.Figure()

    image = figure[0, 0].add_image(full_data)

    figure.show()

    i, j = 1, 1


    def update():
        global i, j
        # set the new image data as a subset of the full data
        row = np.abs(np.sin(i)) * 2300
        col = np.abs(np.cos(i)) * 2300
        image.data = full_data[: int(row), : int(col)]

        i += 0.01
        j += 0.01


    figure.add_animations(update)

    # NOTE: fpl.loop.run() should not be used for interactive sessions
    # See the "JupyterLab and IPython" section in the user guide
    if __name__ == "__main__":
        print(__doc__)
        fpl.loop.run()


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

   **Total running time of the script:** (0 minutes 3.590 seconds)


.. _sphx_glr_download__gallery_image_image_reshaping.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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