@rn, @R
Smooth random values: 2D noise sampled at the cell position, so neighbouring cells get similar values.
@R is an alias.
Syntax
- @rn(<max>), @rn(<min>, <max>)
- @rn(<min>, <max>, <frequency>, <scale>, <octave>)
- @rn(<min>, <max>, frequency=2, octave=3)
- min, max
- The output range, with an optional unit. One argument means 0 to that value. Two letters give a letter.
- frequency
- How fast the noise changes across the grid. Default
1; higher values give smaller features. - scale
- Amplitude multiplier. Default
1. - octave
- Number of noise layers added together, 1 to 100. More octaves add finer detail. Default
1.
Arguments after the range can be named, in any order: from, to,
frequency, scale, octave.
The noise field is seeded, so the seed reproduces it.
Inside a @m sequence the position of the step is sampled instead of the cell.
Examples
@grid: 20 / 60vmin;
background: hsl(@rn(0, 360), 70%, 60%);@grid: 20 / 60vmin;
background: #000;
scale: @rn(0, 1, 2);Higher frequency with more octaves:
@grid: 30 / 60vmin;
background: #000;
opacity: @rn(0, 1, frequency=3, octave=3);Noise letters:
@grid: 10 / 60vmin;
font-size: .8em;
@content: @rn(a, z, 2);