shrinktofit
commented
1 year ago Creator's considering with supporting floating point value animation in animation graph which allows to animate general-purposed values. The ideal workflow would be:
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Attach named float curves to animation clips. This can be done either by doing so in animation editor or programmatically generating curves in editor importers(you mostly want the later);
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Call method(s) on
AnimationControllerto fetch the animated value. The value would be correctly interpolated according the animation graph workflow just like skeletal value animation.
Let me know if the explaination is clear and if the considering-feature can help you.
Use Case
Animation in Live2D Cubism SDK Playing motion, fade animation...
Problem Description
Live2D does not have a TRS for animation data.
Live2D animations use values called "Parameters". Parameters play an important role in the animation of a model.
In 3D, the TRS is used to deform the mesh; Live2D does not use the TRS directly, but instead uses parameters. Parameters are represented as 1-dimensional floating point numbers, and the unique value of the parameter indicates the state of the TRS that deforms the mesh of the model. The mesh deformation is performed by CubismCore, and the mesh deformation state tied to the parameter is held by the model data.
When the user animates Live2D, the parameter values are set to CubismCore. CubismCore deforms the mesh based on the received parameter values. The deformed mesh is output from CubismCore as a "deformed triangle list" that can be received by OpenGL and other applications.
The AnimationCurve values that flow into CocosCreator's AnimationGraph are parameter values, not TRS values, in the Live2D SDK. The Live2D SDK must receive the interpolated AnimationCurve values in the AnimationGraph.
Transformations are not performed using the CocosCreator engine, but by CubismCore. CocosCreator only displays the deformed triangle list output from CubismCore.
The Cubism SDK for Cocos Creator alpha version only supports simple animations using
cc.AnimationThe Cubism SDK for other platforms supports animation transitions, animation management using animation graphs, and fades.Live2D Cubism SDK for Cocos Creator R1 alpha 1 https://docs.live2d.com/en/cubism-sdk-manual/download-sdk-for-cc-alpha/
Proposed Solution
No response
How it works
No response
Alternatives Considered
Implement your own animation transitions and fades without using AnimationGraph. However, this idea is not user friendly for Cocos Creator users.
Additional Information
No response