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lottie: improve Expressions #2233

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hermet opened this issue Apr 30, 2024 · 0 comments

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enhancement lottie

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hermet commented Apr 30, 2024 •

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Missing major lottie expressions spec:

Layer Sub-objects attributes and methods

effect(name) //thorvg needs to support layer effect first
effect(index) //thorvg needs to support layer effect first

Property attributes and methods

propertyGroup(countUp = 1)
propertyIndex

Layer Space Transforms methods

toComp(point, t=time)
fromComp(point, t=time)
fromCompToSurface(point, t=time)

Expression access to paths points on shapes, masks, and brush strokes

pointOnPath()

The rest of spec may not be useful. A clear and practical test suite is necessary to cover them.
See history: #1640

hermet added enhancement lottie labels

hermet added this to the 0.14 milestone

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