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

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

.. _sphx_glr__gallery_validation_validate_volume_ray_cam_sign.py:


Volume Axis-Aligned, Rotated Camera
=====================================

Render a MIP volume with the camera oriented such that the view matrix has
zeros on its diagonal. You should see:

* A 3x3 grid of voxels with a smooth gradient from dark (bottom-left) to
  bright (top-right).

.. GENERATED FROM PYTHON SOURCE LINES 11-51



.. image-sg:: /_gallery/validation/images/sphx_glr_validate_volume_ray_cam_sign_001.webp
   :alt: validate volume ray cam sign
   :srcset: /_gallery/validation/images/sphx_glr_validate_volume_ray_cam_sign_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)

    data = np.arange(27, dtype=np.uint16).reshape(3, 3, 3)

    scene = gfx.Scene()
    vol = gfx.Volume(
        gfx.Geometry(grid=gfx.Texture(data, dim=3)),
        gfx.VolumeMipMaterial(
            clim=(float(data.min()), float(data.max())), interpolation="nearest"
        ),
    )
    scene.add(vol)

    camera = gfx.PerspectiveCamera(fov=70, depth_range=(1, 1_000_000))
    camera.world.matrix = np.array(
        [
            [0, 0, 1, 10],
            [1, 0, 0, 1],
            [0, 1, 0, 1],
            [0, 0, 0, 1],
        ],
        dtype=float,
    )


    def animate():
        renderer.render(scene, camera)


    canvas.request_draw(animate)

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


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

   **Total running time of the script:** (0 minutes 0.347 seconds)


.. _sphx_glr_download__gallery_validation_validate_volume_ray_cam_sign.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_ray_cam_sign.ipynb <validate_volume_ray_cam_sign.ipynb>`

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

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

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

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


.. only:: html

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

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