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

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

.. _sphx_glr__gallery_feature_demo_sheen_chair.py:


Sheen Chair
===========

This example demonstrates the sheen effect in a glTF model.

.. GENERATED FROM PYTHON SOURCE LINES 7-64



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_sheen_chair_001.webp
   :alt: sheen chair
   :srcset: /_gallery/feature_demo/images/sphx_glr_sheen_chair_001.webp
   :class: sphx-glr-single-img





.. code-block:: Python



    import imageio.v3 as iio
    from rendercanvas.auto import RenderCanvas, loop
    import pygfx as gfx

    # Init
    canvas = RenderCanvas(size=(1280, 720), title="Sheen Chair")
    renderer = gfx.renderers.WgpuRenderer(canvas)
    scene = gfx.Scene()

    directional_light = gfx.DirectionalLight(intensity=2.5)
    directional_light.local.position = (0.5, 0, 0.866)
    scene.add(directional_light)

    # Read cube image and turn it into a 3D image (a 4d array)
    env_img = iio.imread("imageio:meadow_cube.jpg")
    cube_size = env_img.shape[1]
    env_img.shape = 6, cube_size, cube_size, env_img.shape[-1]

    # Create environment map
    env_tex = gfx.Texture(
        env_img, dim=2, size=(cube_size, cube_size, 6), generate_mipmaps=True
    )

    gltf_path = "https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/SheenChair/glTF-Binary/SheenChair.glb"

    gltf = gfx.load_gltf(gltf_path, quiet=True)

    # gfx.print_scene_graph(gltf.scene)  # Uncomment to see the tree structure
    scene.add(gltf.scene)


    def add_env_map(obj):
        if isinstance(obj, gfx.Mesh) and isinstance(obj.material, gfx.MeshStandardMaterial):
            obj.material.env_map = env_tex
            obj.material.env_map_intensity = 0.5


    gltf.scene.traverse(add_env_map)

    scene.add(gfx.AmbientLight(intensity=0.1))

    # Create camera and controller
    camera = gfx.PerspectiveCamera(45, 640 / 480)
    camera.show_object(gltf.scene, view_dir=(1.8, -0.6, -2.7))
    controller = gfx.OrbitController(camera, register_events=renderer)


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


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


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

   **Total running time of the script:** (0 minutes 2.319 seconds)


.. _sphx_glr_download__gallery_feature_demo_sheen_chair.py:

.. only:: html

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

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

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

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

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

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

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