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

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

.. _sphx_glr__gallery_feature_demo_morph_facecap.py:


Facecap animation with morph targets
====================================

This example demonstrates how to animate a model with morph targets.

The model originates from Face Cap (https://www.bannaflak.com/face-cap/documentation.html#1.5)
and has undergone format conversion.
It includes morph targets for facial expressions, utilizing 52 blend shapes.

.. GENERATED FROM PYTHON SOURCE LINES 13-19

.. note::

  To run this example, you need a model from the source repo's example
  folder. If you are running this example from a local copy of the code (dev
  install) no further actions are needed. Otherwise, you may have to replace
  the path below to point to the location of the model.

.. GENERATED FROM PYTHON SOURCE LINES 19-31

.. code-block:: Python


    import os
    from pathlib import Path

    try:
        # modify this line if your model is located elsewhere
        model_dir = Path(__file__).parents[1] / "data"
    except NameError:
        # compatibility with sphinx-gallery
        model_dir = Path(os.getcwd()).parent / "data"









.. GENERATED FROM PYTHON SOURCE LINES 32-33

Once the path is set correctly, you can use the model as follows:

.. GENERATED FROM PYTHON SOURCE LINES 33-120

.. code-block:: Python



    import pygfx as gfx

    from wgpu.gui.auto import WgpuCanvas, run
    from wgpu.utils.imgui import ImguiRenderer
    from imgui_bundle import imgui

    gltf_path = model_dir / "facecap.glb"

    scene = gfx.Scene()

    canvas = WgpuCanvas(size=(1280, 720), max_fps=-1, title="Facecap", vsync=False)

    renderer = gfx.WgpuRenderer(canvas)
    camera = gfx.PerspectiveCamera(45, 1280 / 720, depth_range=(0.1, 1000))

    direct_light = gfx.DirectionalLight()
    direct_light.local.position = (0, 1, 1)

    scene.add(gfx.AmbientLight(), direct_light)

    gltf = gfx.load_gltf(gltf_path)

    model_obj = gltf.scene.children[1]

    scene.add(model_obj)

    camera.show_object(model_obj, view_dir=(1.8, -0.8, -3), scale=1.2)

    gfx.OrbitController(camera, register_events=renderer)


    stats = gfx.Stats(viewport=renderer)

    face_mesh = model_obj.children[0].children[0].children[2].children[0]
    gui_renderer = ImguiRenderer(renderer.device, canvas)

    mixer = gfx.AnimationMixer()

    action_clip = gltf.animations[0]
    action = mixer.clip_action(action_clip)

    clock = gfx.Clock()

    action.play()


    def draw_imgui():
        imgui.new_frame()
        imgui.set_next_window_size((400, 0), imgui.Cond_.always)
        imgui.set_next_window_pos(
            (gui_renderer.backend.io.display_size.x - 400, 0), imgui.Cond_.always
        )
        imgui.set_next_item_open(True)
        is_expand, _ = imgui.begin(
            "Controls",
            None,
            flags=imgui.WindowFlags_.no_move | imgui.WindowFlags_.no_resize,
        )
        if is_expand:
            for i, name in enumerate(face_mesh.morph_target_names):
                imgui.slider_float(name, face_mesh.morph_target_influences[i], 0, 1)

        imgui.end()
        imgui.end_frame()
        imgui.render()
        return imgui.get_draw_data()


    gui_renderer.set_gui(draw_imgui)


    def animate():
        dt = clock.get_delta()
        mixer.update(dt)

        with stats:
            renderer.render(scene, camera, flush=False)
        stats.render()
        gui_renderer.render()
        canvas.request_draw()


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



.. image-sg:: /_gallery/feature_demo/images/sphx_glr_morph_facecap_001.webp
   :alt: morph facecap
   :srcset: /_gallery/feature_demo/images/sphx_glr_morph_facecap_001.webp
   :class: sphx-glr-single-img






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

   **Total running time of the script:** (0 minutes 14.318 seconds)


.. _sphx_glr_download__gallery_feature_demo_morph_facecap.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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