how to animate the scale of a ModelEntity in realitykit?
Asked on 08/31/2024
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To animate the scale of a ModelEntity in RealityKit, you can use the entity component system (ECS) approach. Here's a general outline of how you might achieve this:
-
Create a State Variable for Scale: Define a state variable that will hold the scale value. This variable can be updated to change the scale of the
ModelEntity. -
Update the Scale Programmatically: You can update the scale of the
ModelEntityby modifying the state variable. This will automatically update the frame values of your view, and the entity will resize accordingly. -
Use RealityKit's Update Function: You can call the update function on all registered systems every frame to commit the updated scale values to the component. This allows for smooth animations.
-
Add Controls for Interaction: Implement UI controls, such as buttons, to allow users to interactively change the scale of the
ModelEntity.
For more detailed guidance, you might want to refer to the session Compose interactive 3D content in Reality Composer Pro (27:23) where blend shapes and animations are discussed, which can be adapted for scaling animations.
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