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

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

.. _sphx_glr__gallery_validation_validate_image_colormap.py:


Simple Colormap
===============

Show an image with a simple colormap.

* You should see a square image with 3 equally sized vertical bands.
* The bands should be red, green, and blue.

.. GENERATED FROM PYTHON SOURCE LINES 10-39



.. image-sg:: /_gallery/validation/images/sphx_glr_validate_image_colormap_001.png
   :alt: validate image colormap
   :srcset: /_gallery/validation/images/sphx_glr_validate_image_colormap_001.png
   :class: sphx-glr-single-img





.. code-block:: default

    # test_example = true

    import numpy as np
    from wgpu.gui.auto import WgpuCanvas, run
    import pygfx as gfx


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

    im = np.repeat(np.linspace(0, 1, 99).reshape(1, -1), 99, 0).astype(np.float32)

    colormap_data = np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]], np.float32)
    colormap = gfx.Texture(colormap_data, dim=1)

    image = gfx.Image(
        gfx.Geometry(grid=gfx.Texture(im, dim=2)),
        gfx.ImageBasicMaterial(clim=(0, 1), map=colormap, map_interpolation="nearest"),
    )
    scene.add(image)

    camera = gfx.OrthographicCamera()
    camera.show_rect(0.5, 99.5, 0.5, 99.5)

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

    if __name__ == "__main__":
        run()


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

   **Total running time of the script:** (0 minutes 0.307 seconds)


.. _sphx_glr_download__gallery_validation_validate_image_colormap.py:

.. only:: html

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




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

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

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

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


.. only:: html

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

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