cfbb56c6e1
Two issues: 1) For static keyframes (start_value == end_value) AE yields horizontal orientation (0 tangent). We technically have the same logic in Skottie, but our value deduplication logic interferes: the two consecutive equal values are consolidated, and the result ends up holding the spatial lerp info for the next frame => our hold frames auto-orient for the beginning of the next keyframe. Fix: skip value deduplication when spatial lerp is present. 2) The very last keyframe is always static and holds no spatial info. AE retains the orientation of the previous frame, but Skottie yields 0 tangent. Fix: the easiest way to accomplish AE semantics is to detect when we're dealing with the last keyframe, and swap with the previous keyframe with an adjust weight of 1 (to select the end value). This produces the same lerp result (because keyframed values are always contiguous) and also respects the orientation of the prev frame. TBR= Change-Id: Id661f7804533e95b747722457489a7ef759572a4 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301176 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Florin Malita <fmalita@google.com> Commit-Queue: Florin Malita <fmalita@chromium.org> |
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