cut-the-curve

Name: cut-the-curve
Author: heygen-com

9.0kinstalls3.5kforks

How to install cut-the-curve?

heygen-com/hyperframes/cut-the-curve

$npx -y skills add heygen-com/hyperframes --skill cut-the-curve

Installs into the current project.

Summary

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-f

Files · 1

View on GitHub

SKILL.md

1	# Cut the Curve — the technique catalog
2
3	Five SEAM techniques, one principle: **cut at peak velocity, match direction and speed
4	on both sides of the cut** — plus the two in-scene techniques (§6 arrivals, §7 slides).
5	The seam LAW — vector law, the current, the ledger, the Seam Gate — lives in
6	`motion-doctrine`; read it first. This skill is the parameters and mechanics.
7	All GSAP code templates (worker + registry): `examples/gsap-implementation.md`.
8
9	## Catalog
10
11	\| # \| Technique \| Scope \| Axis \| Use for \|
12	\| --- \| -------------------------- \| ------------------------------ \| ------------------- \| ------------------------------------------------------ \|
13	\| 1 \| Zoom-Through (forward) \| Within-scene text swap \| Z, toward viewer \| progressing deeper into the same thought \|
14	\| 2 \| Inverse Zoom-Through \| Arrival / payoff beat \| Z, away from viewer \| something bigger lands \|
15	\| 3 \| Cut the Curve \| Between scenes \| X / Y \| the default boundary, the film's current \|
16	\| 4 \| Waterfall Cut \| Text-to-text seam \| X, per-word \| word-level handoff between big-text beats \|
17	\| 5 \| Rack-Focus Blur-Cut \| Same-surface state swap \| X / Y / Z \| the one cut you want SEEN — a DSLR focus-pull flourish \|
18	\| 6 \| Waterfall Entry \| In-scene ARRIVAL (no seam) \| Y, from below \| title cards, segment openers, list intros \|
19	\| 7 \| Nudge Curve \| In-scene group slide (no seam) \| X / Y \| repositioning a composed group to make room \|
20
21	## Z direction is a sign
22
23	"Same axis" is not enough on Z — the sign of d(scale)/dt must match across the cut:
24
25	\| Z vector \| Exit scale \| Entry scale \| Variant \|
26	\| -------------- \| ------------------- \| -------------------- \| -------------------- \|
27	\| Push (forward) \| growing `1 → 1.2` \| growing `0.75 → 1` \| zoom-through \|
28	\| Pull (back) \| shrinking `1 → 0.8` \| shrinking `1.25 → 1` \| inverse zoom-through \|
29
30	Banned mirrors: a receding exit answered by a grow-from-small entry (pull flips to push —
31	the common one, since grow-from-small is the default element entrance), and a push exit
32	answered by an oversized retraction. This binds the incoming scene's OWN entrances during
33	the seam window (cut + ~0.5s), not just the wrapper tween: hold the incoming frame
34	composed, or author its entrance to match the sign. Verify per Seam Gate rule 7.
35
36	## Blur logic (all Z variants)
37
38	\| Subject \| Peak blur \| Why \|
39	\| --------------------------------------------- \| ----------- \| -------------------------------------------------------------- \|
40	\| Text-scale (headline, word group) \| 10px \| 20px smears letterforms — the cut reads as a glitch, not speed \|
41	\| Full-frame surface (window, card, screenshot) \| 18–20px \| lighter blur on a big surface reads as a rendering hiccup \|
42
43	Same peak blur on both sides at the swap frame. Blur the WRAPPER, never children.
44
45	---
46
47	## 1. Zoom-Through (forward)
48
49	Z-axis velocity-matched cut; never both texts visible. Everything GROWS: the outgoing
50	text accelerates toward camera, a hard swap hides at peak blur, the incoming text keeps
51	growing into the focal plane. Headlines and short phrases only. Total ≈ 0.4s.
52
53	\| Phase \| Scale \| Blur \| Opacity \| Ease \| Duration \|
54	\| -------------- \| -------- \| -------- \| ----------------- \| ------------------------------------------ \| -------- \|
55	\| Exit \| 1 → 1.2 \| 0 → 10px \| 1 → 0.15 \| power3.in (opacity: separate `none` tween) \| 0.2s \|
56	\| Cut (`tl.set`) \| in: 0.75 \| 10

People who liked this also viewed

6 picks

Type

cut-the-curve

9.0kinstalls3.5kforks

View on GitHub

How to install cut-the-curve?

heygen-com/hyperframes/cut-the-curve

$npx -y skills add heygen-com/hyperframes --skill cut-the-curve

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Cut the Curve — the technique catalog
2
3	Five SEAM techniques, one principle: **cut at peak velocity, match direction and speed
4	on both sides of the cut** — plus the two in-scene techniques (§6 arrivals, §7 slides).
5	The seam LAW — vector law, the current, the ledger, the Seam Gate — lives in
6	`motion-doctrine`; read it first. This skill is the parameters and mechanics.
7	All GSAP code templates (worker + registry): `examples/gsap-implementation.md`.
8
9	## Catalog
10
11	\| # \| Technique \| Scope \| Axis \| Use for \|
12	\| --- \| -------------------------- \| ------------------------------ \| ------------------- \| ------------------------------------------------------ \|
13	\| 1 \| Zoom-Through (forward) \| Within-scene text swap \| Z, toward viewer \| progressing deeper into the same thought \|
14	\| 2 \| Inverse Zoom-Through \| Arrival / payoff beat \| Z, away from viewer \| something bigger lands \|
15	\| 3 \| Cut the Curve \| Between scenes \| X / Y \| the default boundary, the film's current \|
16	\| 4 \| Waterfall Cut \| Text-to-text seam \| X, per-word \| word-level handoff between big-text beats \|
17	\| 5 \| Rack-Focus Blur-Cut \| Same-surface state swap \| X / Y / Z \| the one cut you want SEEN — a DSLR focus-pull flourish \|
18	\| 6 \| Waterfall Entry \| In-scene ARRIVAL (no seam) \| Y, from below \| title cards, segment openers, list intros \|
19	\| 7 \| Nudge Curve \| In-scene group slide (no seam) \| X / Y \| repositioning a composed group to make room \|
20
21	## Z direction is a sign
22
23	"Same axis" is not enough on Z — the sign of d(scale)/dt must match across the cut:
24
25	\| Z vector \| Exit scale \| Entry scale \| Variant \|
26	\| -------------- \| ------------------- \| -------------------- \| -------------------- \|
27	\| Push (forward) \| growing `1 → 1.2` \| growing `0.75 → 1` \| zoom-through \|
28	\| Pull (back) \| shrinking `1 → 0.8` \| shrinking `1.25 → 1` \| inverse zoom-through \|
29
30	Banned mirrors: a receding exit answered by a grow-from-small entry (pull flips to push —
31	the common one, since grow-from-small is the default element entrance), and a push exit
32	answered by an oversized retraction. This binds the incoming scene's OWN entrances during
33	the seam window (cut + ~0.5s), not just the wrapper tween: hold the incoming frame
34	composed, or author its entrance to match the sign. Verify per Seam Gate rule 7.
35
36	## Blur logic (all Z variants)
37
38	\| Subject \| Peak blur \| Why \|
39	\| --------------------------------------------- \| ----------- \| -------------------------------------------------------------- \|
40	\| Text-scale (headline, word group) \| 10px \| 20px smears letterforms — the cut reads as a glitch, not speed \|
41	\| Full-frame surface (window, card, screenshot) \| 18–20px \| lighter blur on a big surface reads as a rendering hiccup \|
42
43	Same peak blur on both sides at the swap frame. Blur the WRAPPER, never children.
44
45	---
46
47	## 1. Zoom-Through (forward)
48
49	Z-axis velocity-matched cut; never both texts visible. Everything GROWS: the outgoing
50	text accelerates toward camera, a hard swap hides at peak blur, the incoming text keeps
51	growing into the focal plane. Headlines and short phrases only. Total ≈ 0.4s.
52
53	\| Phase \| Scale \| Blur \| Opacity \| Ease \| Duration \|
54	\| -------------- \| -------- \| -------- \| ----------------- \| ------------------------------------------ \| -------- \|
55	\| Exit \| 1 → 1.2 \| 0 → 10px \| 1 → 0.15 \| power3.in (opacity: separate `none` tween) \| 0.2s \|
56	\| Cut (`tl.set`) \| in: 0.75 \| 10

People who liked this also viewed

6 picks

Type