Shapes (SHP-2): Stroke Taper (pixels/percent start/end length, width, ease) and
Wave (amount, pixels/cycles, wavelength, phase) rendered as a variable-width
outline; Dash 2/Gap 2/Dash 3/Gap 3 (shape.dashes.add/remove, timeline +/-
buttons); radial gradient Highlight Length/Angle as a focal gradient.
Masks (MSK-1): mask feather points on the Mask Path (mask.featherPoint.*,
Mask Feather tool add/drag), per-point signed radius and tension, rendered
from the signed distance to the path; carried through vertex edits.
Motion blur (LYR-10): Adaptive Sample Limit comp setting; 2D layers take one
sample per pixel of shutter travel between Samples Per Frame and the limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Library groundwork for mask tracking (MSK-3) and the Warp Stabilizer (TRK-2),
clean-room from published methods:
- track::klt: Shi-Tomasi corners, pyramidal Lucas-Kanade with forward-backward check
- track::fit: RANSAC + least-squares translation/scale/similarity/affine/homography
- track:😷 MaskTracker following the pixels inside a mask outline per frame
- track::stabilize: incremental clip analysis (serde WarpAnalysis), Gaussian path
smoothing (Matsushita 2006), No Motion, preserve scale, crop / auto-scale with
max-scale relaxation
- path::interp: Mask Interpolation correspondence (arc-length vertex insertion,
shape-context matching) and rigid/linear in-betweens
Engine commands, UI and the effect itself are not wired yet (stubs unchanged).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas