Agent skill · design visual · heygen-com
cut-the-curve
The technique catalog: five velocity-matched SEAMS (zoom-through, INVERSE zoom-through, cut-the-curve, waterfall cut, rack-focus blur-cut) plus the two in-scene techniques — waterfall ENTRY (staggered arrival cascades for title cards / segment openers) and the nudge curve (slow-fast-slow three-phase group slides). Covers partial-travel (~12% of frame) velocity matching via mirrored power4 eases, the Z scale-sign rule, size-scaled blur (10px text / 18-20px full-frame), word-by-word staggered cuts, cascade pacing by element weight, and the 10/65/25 slide ratio. Read before authoring any transition, text-beat handoff, kinetic text entry, or group reposition. [depth, zoom, inverse-zoom, scale-sign, mirrored-zoom, rack-focus, pacing, velocity, cut-the-curve, waterfall, stagger, cascade, kinetic-text, title-card, segment-opener, nudge, slide, easing, group-motion, z-depth, motion-graphics, cinematic, transition, blur, directional-continuity]
Why this skill is useful
Provides domain-specific knowledge on motion graphics techniques and parameters that the AI wouldn't reliably generate on its own.
What it needs
About 10k tokens when loaded. Last updated 2026-08-07. 39,818 stars on the source repository.
What this skill does
Cut the Curve — the technique catalog Five SEAM techniques, one principle: cut at peak velocity, match direction and speed on both sides of the cut — plus the two in-scene techniques (§6 arrivals, §7 slides). The seam LAW — vector law, the current, the ledger, the Seam Gate — lives in motion-doctrine; read it first. This skill is the parameters and mechanics. All GSAP code templates (worker + registry): examples/gsap-implementation.md. Catalog # Technique Scope Axis Use for --- -------------------------- ------------------------------ ------------------- ------------------------------------------------------ 1 Zoom-Through (forward) Within-scene text swap Z, toward viewer progressing deeper into the same thought 2 Inverse Zoom-Through Arrival / payoff beat Z, away from viewer something bigger lands 3 Cut the Curve Between scenes X / Y the default boundary, the film's current 4 Waterfall Cut Text-to-text seam X, per-word word-level handoff between big-text beats 5 Rack-Focus Blur-Cut Same-surface state swap X / Y / Z the one cut you want SEEN — a DSLR focus-pull flourish 6 Waterfall Entry In-scene ARRIVAL (no seam) Y, from below title cards, segment openers, list intros 7 Nudge Curve In-scene group slide (no seam) X / Y repositioning a composed group to make room Z direction is a sign "Same axis" is not enough on Z — the sign of d(scale)/dt must match across the cut: Z vector Exit scale Entry scale Variant -------------- ------------------- -------------------- -------------------- Push (forward) growing 1 → 1.2 growing 0.75 → 1 zoom-through Pull (back) shrinking 1 → 0.8 shrinking 1.25 → 1 inverse zoom-through Banned mirrors: a receding exit answered by a grow-from-small entry (pull flips to push — the common one, since grow-from-small is the default element entrance), and a push exit answered by an oversized retraction. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills heygen-com/cut-the-curve--e66977