sectorFold
Fold a point into one mirrored wedge around a centre: the kaleidoscope fold.
sectorFold(x: Expr, y: Expr, sectorAngle: Expr, center: number = 0.5): Expr
Import frames from shaders/std and use frames.sectorFold.
sectorAngle is the wedge's angle in radians (2π divided by the number of facets). center is where the wedges meet, 0.5 by default. Returns the folded point as an offset from the centre. Sample anything at that point and it repeats and mirrors around the centre.
Parameters
| Name | Type | Notes |
|---|---|---|
x | Expr | |
y | Expr | |
sectorAngle | Expr | |
center | number | Optional. Default 0.5. |
Example
const folded = sectorFold(uv.member('x'), uv.member('y'), math.div(2 * Math.PI, params.uniforms.facets))
See also
directionFrame— The two axes of a direction given in degrees, for patterns that run along it.centredFrame— A frame centred on a position prop: each pixel's offset from the centre and its distance.