After Effects draws the Transform effect as position + K * R * S * (p - anchor)
with the skew K = rot(-axis) * shearY(tan skew) * rot(axis) applied after the
rotation, and keeps what lands outside the layer's bounds. EffectCraft skewed
before rotating (shearX about the axis) and clipped to the layer.
Measured in AE 2026 on a grey 960x540 solid (cases 723, 819, 820): 723 (anchor,
position, scale 120/80, skew 10 axis 20, rotation 30, opacity 70) differed in
11.25 % of the frame and now in 0.065 % (edges, max 16/255), CPU and GPU alike;
819 / 820 (skew 15 axis 60, rotation -25, scale 130/70, anchor) match to the
edge. The buffer grows on each side by that side's overshoot (also for the
motion-blur samples), capped at 16 384 px a side and 16 Mpx in all so a layer
moved far away costs a bounded allocation (regression test); adjustment layers
keep their size.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
After Effects 2026 draws Fractal Noise's Block noise at Scale 100 and
Complexity 1 in cells of 66.67 px (the value changes every 66.67 px along a
row), not 100 px; Soft Linear noise has the matching correlation length.
EffectCraft's lattice is now Scale x 2/3 px (NOISE_CELL), CPU and GPU. Case
904 E03 (Soft Linear, Complexity 4, Scale 100): the noise's autocorrelation
at 32 px was 0.68 (AE 0.41), now 0.54; pixel values cannot match (other
seeds). Still open: AE's noise spreads about 20 % wider around its mean (std
48 vs 40/255 in E03). Existing projects and the Backgrounds presets with
Fractal Noise get finer noise (two thirds of the former cell size).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
After Effects feathers both edges of the wiped wedge (the start ray too) with
a Gaussian whose width is constant in pixels: Completion 40, Start Angle 30,
Counterclockwise, Feather 20 (AE 2026, case 904 E12) fits sigma = 0.4 x
Feather = 8.0 px at every radius (mean alpha error 0.0002 over the frame).
EffectCraft ramped only the moving edge, linearly over Feather degrees, so
the edge was 14 px wide near the centre and 140 px wide at 400 px out, and
the start edge was hard: 378 of 5184 grid points off (max 111/255, 6.6 % of
pixels > 8), now 1 (max 3), 0.009 % of pixels > 8 (near the centre). CPU and
GPU (the kernel now measures distances to the two rays). 0 % and 100 % are
unchanged, so the three Transitions presets keep their end frames; their
Feather (6 / 10) now means pixels.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
After Effects measures the blinds' phase from the layer's centre and softens
both edges of the transparent band with a Gaussian of sigma = Feather / 2; the
band runs from the origin's phase to Completion x Width. EffectCraft measured
from the buffer corner and ramped only one edge linearly over Feather (a hard
edge on the other side). Fitted to AE 2026 renders of Completion 40,
Direction 30, Width 50, Feather 5 on a 960 x 540 and a 480 x 270 layer (the
origin is the centre + 0.6 px): case 715 was 499 of 5184 grid points off
(max 91/255, 7.1 % of pixels > 8), now 28 (0.056 %), all within ~6 px of the
layer edge where AE differs (up to 48/255, not modelled); away from it within
6/255 (test: one AE row of the 480 x 270 render). CPU and GPU (new erf-based
kernel, same term count). Completion 0 / 100 are unchanged, so the
Transitions presets keep their start and end frames.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
After Effects' Radial Blur keeps a layer's edges: Zoom 20 on a flat grey 960x540
solid over red (case 713) stays flat and opaque to its edge, and a zoomed
full-frame ramp (case 829) keeps the frame opaque (2/255 at x = 2, 253/255 at
x = 1917 on row 540). EffectCraft sampled transparency outside the layer, so its
edges faded and the red below showed through (713: 3.9 % of the frame off, max
64/255). Now 713 is identical to AE (max 0/255), CPU and GPU. CC Radial Blur
(already matching AE) is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With Glow Colors = Original Colors, After Effects thresholds each channel of
the straight colour separately and the glow is 8 x (value - threshold +
0.061) per channel (times Intensity), nothing below: fitted to AE 2026
renders of grey 0.65 / 0.8 / 0.9 / 1, orange (1, 0.5, 0) and (0.2, 0.6, 1)
solids at Threshold 40 / 60 / 80 % and Radius 10 / 30 (36 channel values,
exact to the 8-bit capture; an orange solid glows red only). EffectCraft
scaled the colour by a luminance threshold (k = (L - thr) / (1 - thr)), about
3.7 x too dim on white. Cases 806 / 810 / 811 (32 bpc): outside the layer
now within 3/255 of AE (806 white at Intensity 1: 119 = AE, was 32); grid
0 points off for 806-810. The glow's alpha (the blurred layer alpha) and the
Arbitrary Map / A & B colours and alpha-based glows are unchanged.
Stacked on fix-glow-halo (same lines). Not changed: Composite Original's
semantics are swapped against AE's names (EffectCraft's "On Top" adds the
glow over the original, which AE calls "Behind"; AE's "On Top" keeps the
original over the glow), so imported AE Glows at the default Behind show
no glow inside the layer (811 interior 204 vs AE 255).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With Glow Based On Color Channels, After Effects gives the glow the layer's whole
alpha (blurred), not the thresholded part, and Intensity scales only its colour:
a layer below the threshold darkens what lies under its edge. Fitted to AE 2026
renders of a grey solid over red (cases 524, 807-809): the halo is the same at
Intensity 1 and 3 and with Composite Original Behind or On Top, and its edge is
an erfc step of sigma = 0.384 x Glow Radius at radius 10 and 30 (was radius / 2).
524 (Glow defaults on a 50 % grey solid): EffectCraft had no halo (max 116/255
off at the edge); now red 248/234/208/165/140 at 7.5/5.5/3.5/1.5/0.5 px outside
vs AE 249/235/206/164/140, max 2/255 over the frame, CPU and GPU. The blur
width applies to every glow; alpha-based glows keep their coverage rule
(thresholded alpha, scaled by Intensity). Not matched yet: the brightness of glows above the
threshold (AE about 3.7 x brighter for a white solid, cases 806, 810, 811).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- render --progress with a piped stderr writes well-formed
`progress <done> <total> <elapsed> <left|->` lines, one per change, and
the same render without the flag writes none.
- A template's Media Replacement control takes {"path"|"file"|"media": …},
is found by name ignoring case, and a path that cannot be imported fails
with an error naming the control and the path.
