Animate focus and hover rings with point size

[kolmakova]

Screen.Recording.2026-09-13.at.12.01.30.mov

Problem

When point sizes animate, focus and hover rings jump to the final size while the point is still animating. Outline rings follow correctly.

Cause

Outline rings are part of the point sprite in draw-points.vert, which mixes source and target sizes by transitionProgress. Focus and hover rings use draw-highlighted.vert with a single size uniform set from data.getResolvedPointSize(index), which is always the target size.

Fix

In both ring draw calls in modules/Points/index.ts, when shouldAnimatePointSizes is set, pass mix(previousSize, targetSize, transitionProgress) instead of the target size. previousSizeData already holds the source sizes.

Check that the previous size resolves NaN defaults the same way the point shader does, and whether pointImageSizes needs the same treatment.

Testing

Focus one point, hover another, outline a third, then animate a size change. All three rings should track their point through the transition.