PyBevy is in an early and experimental stage. The API is incomplete, subject to breaking changes without notice, and you should expect bugs. Many features are still under development.
Morph Targets
Demonstrate morph target (blend shape) animation on a glTF model.
Introduction
Morph targets (also called blend shapes) smoothly interpolate between mesh shapes. They are commonly used for facial animation and deformable objects, and are loaded from glTF models.
from pybevy.prelude import *Setup
Load a glTF model that contains morph targets. The animation system will handle blending between shapes.
def setup(commands: Commands, asset_server: AssetServer) -> None:
commands.spawn(SceneRoot(asset_server.load_scene("models/animated/MorphStressTest.gltf#Scene0")))
commands.spawn(
DirectionalLight(illuminance=5000.0),
Transform.IDENTITY.looking_at(Vec3(-1.0, -2.0, -1.0), Vec3.Y),
)
commands.spawn(Camera3d(), Transform.from_xyz(3.0, 1.5, 5.0).looking_at(Vec3(0.0, 0.5, 0.0), Vec3.Y))Running the App
@entrypoint
def main(app: App) -> App:
return app.add_plugins(DefaultPlugins).add_systems(Startup, setup)
if __name__ == "__main__":
main().run()Running this example
Use PyBevy's hot reload feature to run and develop this example. If you don't have PyBevy installed, check out the Quick Start guide.
The code will reload automatically when you make changes to the file.
From Python to Rust
Notice how the core concepts in the code—Commands, Assets, App, and Systems—are identical to the original Bevy example?
This is the power of pybevy! It lets you learn Bevy's powerful, data-driven architecture in friendly Python.
When your project grows and you're ready for maximum, native performance, you'll already know the concepts to start writing systems in Bevy Engine with Rust.