using

com.jakewharton.mosaic.animation.ArcMode applied from this keyframe to the next.

Note that arc modes are meant for objects with even dimensions (such as IntOffset and its variants). Where each value pair is animated as an arc. So, if the object has odd dimensions the last value will always animate linearly.

The order of each value in an object with multiple dimensions is given by the applied vector converter in AnimationSpec.vectorize.