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

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

.. _sphx_glr__gallery_feature_demo_light_directional_shadow.py:


Directional Shadow 1
====================

This example demonstrates directional light shadows and their helper. The cubes
within the view frustum of the shadow camera have complete shadows, the cubes at
the edge of the view frustum of the camera have partial shadows, while the cubes
outside the view frustum of the camera will not cast shadows.

.. GENERATED FROM PYTHON SOURCE LINES 11-71



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_light_directional_shadow_001.webp
   :alt: light directional shadow
   :srcset: /_gallery/feature_demo/images/sphx_glr_light_directional_shadow_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import math
    import pylinalg as la

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

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

    floor = gfx.Mesh(
        gfx.plane_geometry(2000, 2000),
        gfx.MeshPhongMaterial(color="#808080", side="Front"),
    )

    floor.local.rotation = la.quat_from_euler(-math.pi / 2, order="X")
    floor.receive_shadow = True

    scene.add(floor)

    ambient = gfx.AmbientLight("#fff", 0.1)
    scene.add(ambient)

    light = gfx.DirectionalLight("#aaaaaa")
    light.local.x = -50
    light.local.y = 50
    light.cast_shadow = True

    light.shadow.camera.width = 100
    light.shadow.camera.height = 100

    scene.add(light.add(gfx.DirectionalLightHelper(30, show_shadow_extent=True)))

    box = gfx.box_geometry(20, 20, 20)
    material = gfx.MeshPhongMaterial()

    for i in range(5):
        cube = gfx.Mesh(box, material)
        cube.local.position = (0, 10, i * 50 - 100)
        cube.cast_shadow = True
        scene.add(cube)


    camera = gfx.PerspectiveCamera(70, 16 / 9)
    camera.local.y = 100
    camera.local.z = 350
    camera.show_pos((0, 0, 0))

    controller = gfx.OrbitController(camera, register_events=renderer)


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


    if __name__ == "__main__":
        renderer.request_draw(animate)
        loop.run()


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

   **Total running time of the script:** (0 minutes 0.640 seconds)


.. _sphx_glr_download__gallery_feature_demo_light_directional_shadow.py:

.. only:: html

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

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

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

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

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

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

      :download:`Download zipped: light_directional_shadow.zip <light_directional_shadow.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#light_directional_shadow.py"></iframe>