MONOCHROME GRAIN was one integer knob 0..10 with one meaning, how much. It is now
a strip of three: AMOUNT — the same knob, in half steps — SIZE, a percentage of
the stock's own grain cell (50..200%, so the same number means the same texture
relative to the picture on both platforms), and an inert readout of N/INCH, the
clump count the two knobs and the stock add up to in the print's own terms (300
dpi = 300px of the 1080-wide reference the knob was tuned at).
Emulsion is not one grain size across the frame: the coating settles unevenly.
The field now prints that — the same hash read slowly (ZONE_FREQ = 1/96 cells,
turned off the axes, smoothed so a border between two patches is a slope and not
a seam) swings each patch's own cell by half of ZONE_SWING either way, ±20%.
Nothing in it moves the field's mean: a coarser patch prints bigger clumps, not a
brighter one, which is why the strip can read out one number while the frame
carries a range.
A patch may not swing a cell under the pixel the target can print, or the clumps
are sub-pixel and print as static — aliasing, not a finer emulsion. The shader
takes that floor as a `mincell` uniform beside the cell (u, mincell, seed.xy, in
declaration order): an export passes one output pixel, a preview one device pixel
(1 / PixelRatio), which is the floor the phone's preview already needed.
SIZE is stored as an integer percent so no float noise reaches the recipe JSON,
and it is read by the same two engines that read grain: the web's
grainCell(width, stock, sizePct) and the phone's grainCell(width, minCell,
sizePct). The chip above the strip carries the amount in half steps the way TEMP
carries the kelvin, and the readout moves with SIZE, not with AMOUNT.
Measured:
grain-controls-test.cjs 20/0 — the strip carries grp-grain, grain:amount,
grain:size and grain-inch; the AMOUNT ruler is 0..10 step 0.5, and 3 -> 3.5
moves the frame (sigma 18.53 -> 21.91, new hash) without moving the readout;
10 -> sigma 60.43, 0 -> sigma 0; SIZE 200% -> 130/INCH (sigma 40.06), 50% ->
522/INCH (66.56: under the preview's pixel floor what is printed is static,
not finer grain); the region claim on an 8x8 grid of the flat frame gives
tile sd 51.0..66.1, max/min 1.295, and a tile mean spread of 1.14 — a coarser
patch is not a brighter one.
grain-size-test.cjs 17/0 (was 12/0) — the SIZE rule and the readout on the
module itself: 200% doubles the cell, 50% halves it, the output pixel still
floors the smaller one. 4000px file cell 3.704 against 1.083 device px on a 3x
preview, the old one-dp floor 2.77x coarser, rho1 0.627 against 0.074. The
harness built its own 3-uniform array; it now passes [u, mincell, seed.xy]
like every other caller.
_grain-zone-ck.cjs — the zone's own contribution, at preview scale (cell 1.70,
1600px, 8x8 tiles of 200px): zone on, tile sd 23.22..24.82 (ratio 1.069);
zone off, 24.42..24.79 (ratio 1.015). Nothing else differs.
_grain-ck.cjs — the clump field is otherwise what it was: rho1 0.62
classic-neg / 0.12 velvia, residual autocorr 0.035 against 0.036 with the
swing forced to 0, peak/median 32.3 against 27.6.
_grain-spectrum.cjs (app, 1600px render) — residual autocorr 0.017..0.018,
spectral peak/median 4.6..6.1: the slow lattice adds no peak of its own.
grain-stock-test 53/0, sims-test 31/0, fx-mono-test 15/0, wb-preset-test 33/0,
temp-swatch-test 33/0, wm-font-test 38/0, grain-analog-test 7/0 (its grain
selectors moved to the strip).
tsc: web clean; the phone's scoped config reports exactly the pre-change
baseline (Viewfinder.tsx's own errors, none new).
ponytail: the amount is fractional now, so the two recipe-create forms read grain
through their own half() instead of the int() that would truncate the half the
ruler just spent — every other knob there is still whole. The SIZE knob is one
number for the whole strip: no way to dial a single patch, and no seed control.
The readout is the DESIGN count the field is built on, never a per-patch
measurement.
TEMP was a kelvin and nothing else, and the seven presets were seven numbers
the two platforms disagreed about: AUTO 5500, DAYLIGHT 5600, DAYLIGHT -3R
5800, CLOUDY 6500, SHADE 7500 here and 8000 in both recipe-creation forms,
TUNGSTEN 3200, FLUOR 4000. A chip tapped in the recipe panel and the same
chip tapped on the photo printed different frames.
The presets are now the phone's own WB_PAIRS — kelvin AND tint — in all three
places, so every chip lands the same pair on either platform:
AUTO 5500/0 DAYLIGHT 5500/0 DAYLIGHT -3R 5500/-3 CLOUDY 6500/1
SHADE 7500/2 TUNGSTEN 3200/0 FLUOR 4000/3
SHADE read 8000K in RecipeCreatePanel and RecipeCreateModal; it is the WB
tab's 7500K/+2 now, so a recipe created in a form prints what the same chip
prints on the photo.
AUTO and DAYLIGHT stand for one pair, so the pair alone cannot say which of
the two is lit. TEMP is therefore keyed by preset and not by value: `wbChoice`
remembers the chip last tapped (the phone's own wbChoice), and `wbValue()`
answers it only while the engine pair still matches, else the first preset
that pair maps to, else the bare kelvin. `wbLabel()` names that pick on the
chip, which now always carries one: TEMP AUTO at the neutral pair, TEMP SHADE
on a preset, TEMP 6300K on the app's own default recipe where a hand-dragged
ruler landed. Measured on the deployed build (`wb-preset-test.cjs`, 33/0):
AUTO and DAYLIGHT print the same frame to the level, DAYLIGHT -3R moves the
green away from DAYLIGHT at the same 5500K, the ruler warms monotonically
across TUNGSTEN 0.525 / FLUOR 0.730 / AUTO 1.000 / CLOUDY 1.141 / SHADE 1.295,
a hand-drag to 10000K names the chip `10000K` and warms the picture R x1.183
B x0.793, SHADE tapped after that drag restores the pair 7500/2 and prints the
same frame the first tap did (R 156.8 vs 156.8), and a temperature drag leaves
a preset's tint standing (FLUOR's +3).
kelvinToRGB itself was the other half. It took the ratio of the sRGB-ENCODED
blackbody colours and square-rooted it, which measured R x1.06 / B x0.89 from
5500K to 10000K — a shift a swatch shows and a sunset does not. White balance
is a gain on LIGHT, so the ratio is taken in linear light now
(`planckianLinear`) and tamed by a new `KELVIN_TAME = 0.5`: the same 10000K
moves the frame R x1.16 / B x0.76, and 2500K its mirror, which is what a
camera does with its WB set 4500K off the scene. One constant scales the whole
ruler and both platforms carry the same one. Measured through the app
(`_temp-probe.cjs`, gains against 5500K): 2500 R x0.569 B x1.640, 4000 R x0.866
B x1.197, 6500 R x1.057 B x0.940, 10000 R x1.140 B x0.759 — the readout is
compressed against the raw gain because the cast lands on encoded, clipping
pixels, which is the reason for the tame in the first place.
ponytail: no scene meter, so AUTO stays the neutral 5500K/0 pair and is a name
for it, not a measurement. Add one when the engine reads the frame.
ponytail: KELVIN_TAME scales the whole ruler both ways. Split it into a warm
and a cool constant only if the two ends are ever asked to move apart.
Verified: `wb-preset-test.cjs` 33/0 and `_temp-probe.cjs`, `sims-test.cjs`
31/0, `fx-mono-test.cjs` 15/0, `wm-font-test.cjs` 38/0 against the deployed
build; web `tsc --noEmit` clean, the phone's scoped check down to its two
pre-existing `skiaImage.ts` nulls.
The CREATE RECIPES form had grown into one long scroll. The six categorical
groups (SIMULATION, DYNAMIC RANGE, GRAIN EFFECT, COLOR CHROME EFFECT, COLOR
CHROME EFFECT BLUE, WHITE BALANCE) are now native <details> folds — the browser
keeps the open flag, so no state and no library.
The two tone-curve ENDS join the numeric grid: EXPOSURE (the matrix gain the IQ
tab already drives), EV (the old EXPOSURE COMP. row, renamed to the phone's
word), WHITE and BLACK. WHITE/BLACK are new ColorAdjustments fields, applied in
TONE_SKSL as cubic end-weights rather than another smoothstep knee — the HL/SH
knees already spend the slope budget, and the cubic keeps the curve monotonic
for every combination (derivative >= 0.46), so a brighter input can still never
come out darker. Both are optional, so stored recipes keep working.
- the brand "Cam", the avatar and the signed-in name follow the theme accent
- double-click a slider track resets that parameter; double-click the photo
toggles 1:1 and the whole photo on the stage
- `*`, or a recipe chip dragged onto the star, files the look under FAVORITED
- RESET under CREATE clears the draft form, and the button now sits under a
rule at the foot of the column
Every row now feeds the open render as it is typed, so a recipe's effect is
visible before it is saved. The draft is not an undo step: SAVE/EXPORT stays the
only thing that commits it, and merely opening the tab changes nothing.
The phone's RecipeCreateModal becomes a rail tab with the same rows, seeding
from the look on screen and clamping the same way. SAVE RECIPE applies the new
look, lists it under RECIPES and, when signed in, stores it on the account; a
guest's copy stays in memory and goes away with the page. Signed-in users can
also export the recipe as the app's encrypted .recipe file (shared/utils
/recipeShare.ts vendored byte-identical from the RN project).
3dtours