.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "_gallery/feature_demo/transparency2.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_transparency2.py>`
        to download the full example code

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

.. _sphx_glr__gallery_feature_demo_transparency2.py:


Transparency 2
==============

Example showing transparency using three orthogonal planes.
Press space to toggle the order of the planes.
Press 1-6 to select the blend mode.

.. GENERATED FROM PYTHON SOURCE LINES 9-68



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_transparency2_001.png
   :alt: transparency2
   :srcset: /_gallery/feature_demo/images/sphx_glr_transparency2_001.png
   :class: sphx-glr-single-img





.. code-block:: default


    from wgpu.gui.auto import WgpuCanvas, run
    import pygfx as gfx
    import pylinalg as la

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

    sphere = gfx.Mesh(gfx.sphere_geometry(10), gfx.MeshPhongMaterial())

    geometry = gfx.plane_geometry(50, 50)
    plane1 = gfx.Mesh(geometry, gfx.MeshBasicMaterial(color=(1, 0, 0, 0.3)))
    plane2 = gfx.Mesh(geometry, gfx.MeshBasicMaterial(color=(0, 1, 0, 0.5)))
    plane3 = gfx.Mesh(geometry, gfx.MeshBasicMaterial(color=(0, 0, 1, 0.7)))

    plane1.local.rotation = la.quat_from_axis_angle((1, 0, 0), 1.571)
    plane2.local.rotation = la.quat_from_axis_angle((0, 1, 0), 1.571)
    plane3.local.rotation = la.quat_from_axis_angle((0, 0, 1), 1.571)

    scene.add(plane1, plane2, plane3, sphere)

    camera = gfx.PerspectiveCamera(70, 16 / 9)
    camera.show_object(scene, view_dir=(-1, -2, -3))
    controller = gfx.OrbitController(camera, register_events=renderer)

    scene.add(camera.add(gfx.DirectionalLight()))


    @renderer.add_event_handler("key_down")
    def handle_event(event):
        if event.key == " ":
            print("Rotating scene element order")
            scene.add(scene.children[0])
            canvas.request_draw()
        elif event.key in "0123456789":
            m = [
                None,
                "opaque",
                "ordered1",
                "ordered2",
                "weighted",
                "weighted_depth",
                "weighted_plus",
            ]
            mode = m[int(event.key)]
            renderer.blend_mode = mode
            print("Selecting blend_mode", mode)


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


    if __name__ == "__main__":
        print(__doc__)
        canvas.request_draw(animate)
        run()


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

   **Total running time of the script:** (0 minutes 0.273 seconds)


.. _sphx_glr_download__gallery_feature_demo_transparency2.py:

.. only:: html

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




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

      :download:`Download Python source code: transparency2.py <transparency2.py>`

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

      :download:`Download Jupyter notebook: transparency2.ipynb <transparency2.ipynb>`


.. only:: html

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

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