smearAlong
Blurs any 2D lookup along a direction, for streaked reflections and motion smear.
smearAlong(
opts: {center: Expr; axis: Expr; spread: Expr; taps?: number; sigma?: number; hint?: string},
sample: (x: Expr, y: Expr) =,
> Expr): Expr
Import materials from shaders/std and use materials.smearAlong.
Samples taps points (default 9) spread spread either side of center along the unit vector axis, weighted by a bell curve, and sums them. sample receives an x and a y.
Parameters
| Name | Type | Notes |
|---|---|---|
opts | {center: Expr; axis: Expr; spread: Expr; taps?: number; sigma?: number; hint?: string} | |
sample | (x: Expr, y: Expr) => Expr |
Example
const env = smearAlong({center: R, axis: brush.tangent, spread: 0.3}, (x, y) => studioSoftboxes(x, y, studio))
See also
studioSoftboxes— The brightness of a five-light studio seen in a reflected direction.grainNoise— One octave of smooth signed noise along and across a direction, for grain.