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

.. only:: html

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

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

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

.. _sphx_glr__gallery_feature_demo_manual_matrix_update.py:


Transform Control without Matrix Updating
=========================================

Example showing transform control flow without matrix auto updating.

.. GENERATED FROM PYTHON SOURCE LINES 7-42



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_manual_matrix_update_001.webp
   :alt: manual matrix update
   :srcset: /_gallery/feature_demo/images/sphx_glr_manual_matrix_update_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import imageio.v3 as iio
    import pygfx as gfx
    import pylinalg as la


    group = gfx.Group()

    im = iio.imread("imageio:chelsea.png")
    tex = gfx.Texture(im, dim=2)

    material = gfx.MeshBasicMaterial(map=tex)
    geometry = gfx.box_geometry(100, 100, 100)
    cubes = [gfx.Mesh(geometry, material) for i in range(8)]
    for i, cube in enumerate(cubes):
        cube.local.matrix = la.mat_from_translation((350 - i * 100, 0, 0))
        group.add(cube)


    camera = gfx.PerspectiveCamera(70, 16 / 9)
    camera.local.matrix = la.mat_from_translation((0, 0, 500))


    def animate():
        for i, cube in enumerate(cubes):
            cube.local.position = (350 - i * 100, 0, 0)
            rot = la.quat_from_euler((0.01 * i, 0.02 * i), order="XY")
            cube.local.rotation = la.quat_mul(rot, cube.local.rotation)


    if __name__ == "__main__":
        disp = gfx.Display(camera=camera)
        disp.before_render = animate
        disp.show(group)


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

   **Total running time of the script:** (0 minutes 0.266 seconds)


.. _sphx_glr_download__gallery_feature_demo_manual_matrix_update.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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

.. only:: html

    Interactive example
    -------------------

    Try this example in your browser using Pyodide. Might not work with all examples and all devices. Check the output and your browser's console for details.

    .. raw:: html

        <iframe src="./../pyodide.html#manual_matrix_update.py"></iframe>