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

.. only:: html

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

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

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

.. _sphx_glr__gallery_validation_validate_volume_slice.py:


Validate volume slice
=====================

Same as validate_image.py, but for volume slices.

.. GENERATED FROM PYTHON SOURCE LINES 7-62



.. image-sg:: /_gallery/validation/images/sphx_glr_validate_volume_slice_001.webp
   :alt: validate volume slice
   :srcset: /_gallery/validation/images/sphx_glr_validate_volume_slice_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import numpy as np
    from rendercanvas.auto import RenderCanvas, loop
    import pygfx as gfx


    canvas = RenderCanvas()
    renderer = gfx.renderers.WgpuRenderer(canvas)
    scene = gfx.Scene()

    data = np.array(
        [
            [0, 1, 1, 1],
            [1, 1, 1, 1],
            [1, 1, 1, 1],
            [1, 1, 1, 2],
        ],
        np.uint8,
    ).reshape(1, 4, 4)

    # Using different dtypes:
    #
    # float -> r32float, sampler
    # uint8 -> r8unorm, sampler
    # int16 -> r16sint, no sampler | later maybe r16snorm with sampler
    # uin32 -> r32uint, no sampler

    for dx, dtype in enumerate(["float32", "uint8", "int16", "uint32"]):
        typed_data = data.astype(dtype)

        for dy, interpolation in enumerate(["nearest", "linear", "cubic"]):
            volume = gfx.Volume(
                gfx.Geometry(grid=gfx.Texture(typed_data, dim=3)),
                gfx.VolumeSliceMaterial(clim=(0, 2), interpolation=interpolation),
            )
            volume.local.position = dx * 5, dy * 5, 0
            scene.add(volume)

    # Points go on the first (float / nearest-neighbour interpolated) slice
    points = gfx.Points(
        gfx.Geometry(positions=[[0, 0, 1], [3, 3, 1]]),
        gfx.PointsMaterial(color=(0, 1, 0, 1), size=20, aa=True),
    )
    scene.add(points)

    camera = gfx.OrthographicCamera()
    camera.show_rect(-1, 19, -1, 14)

    canvas.request_draw(lambda: renderer.render(scene, camera))


    if __name__ == "__main__":
        print(__doc__)
        loop.run()


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

   **Total running time of the script:** (0 minutes 2.070 seconds)


.. _sphx_glr_download__gallery_validation_validate_volume_slice.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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