aurora
backgroundsset 36× in templates and rigs
A billboard plane filled by a procedural light field: by default ribbons of light (warm, cool and hot families) over a dark gradient; with `type=fold` or a `name`, the iterated-fold field of openshaders.com. A backdrop wall or a glow behind glass panels.
aurora#field(type=fold size="1920 1080" background=#090909
Attributes
size"x y"The plane, `w h` in mm (default 1920 1080).36×typetext`fold` for the iterated-fold field; `curtain` for real folded curtains standing in the scene; omitted, a `name` picks fold, otherwise the ribbon aurora.32×nametextAn openshaders.com username: its field's 34 numbers are derived from it; any of them written on the tag wins.23×layersnumber12×reacttextNode id(s) the field reflows around (up to eight): it parts, drags and rings where they press on or pass through the plane.12×react-reachnumber12×react-strengthnumber12×glow-sizenumber10×lightnessnumber10×vignettenumber10×chromanumber9×falloffnumber9×huenumber8×hue-spreadnumber8×softnessnumber8×tiltnumber6×aspect-xnumber5×aspect-ynumber5×backgroundcolour #rrggbb5×centre-xnumber5×centre-ynumber5×echonumber5×light-swingnumber5×speednumberTime multiplier of the motion (default 1; 0 freezes it).5×react-ring-speednumber4×echo-shiftnumber3×modetextFold field only: `dark` (default) or `light`, the page blend; `background` is the page colour.3×breath-amountnumber2×colour-cyclenumber2×flow-speednumber2×zoomnumber2×basecolour #rrggbb1×base2colour #rrggbb1×coolcolour #rrggbb1×cool2colour #rrggbb1×flow-directionnumber1×gammanumber1×hotcolour #rrggbb1×hot2colour #rrggbb1×hue-travelnumber1×opacitynumberOverall opacity (default 1); also multiplied by node opacity keyframes.1×position"x y z"1×saturationnumber1×shearnumber1×shrinknumber1×thetanumber1×warmcolour #rrggbb1×warm2colour #rrggbb1×warp-amp-xnumber1×warp-amp-ynumber1×warp-freq-xnumber1×warp-freq-ynumber1×bodycolour #rrggbbThe curtain (default #19ff66).0×bordercolour #rrggbbThe bright lower border (default #b4ffd8).0×chargenumberSeconds of the faint arc: the first curtain only, unrolling from the middle out (default 1.2).0×curtainsnumberHow many, 1..4, set beside each other in depth and rising (default 3).0×fadenumberSeconds it dies over while its border climbs (default 2.5).0×foldnumberMultiplier on the fold depth; 0 is a flat sheet (default 1).0×fringecolour #rrggbbThe thin line under the border, and the lowest of the tops (default #ff3fa8).0×glownumberEmissive gain (default 1).0×heightnumberHeight of the first curtain, mm (default 800); the lower border sits on the node's y.0×holdnumberSeconds it ripples (default 3).0×lengthnumberLength of the first curtain along x, mm (default 2400). A longer one has more folds, not wider ones.0×raysnumberVertical ray contrast; 0 is a smooth glow (default 1).0×seednumberRolls different folds and rays (default 0).0×startnumberAny clock attribute turns on the substorm; this is when the quiet arc appears, seconds.0×topcolour #rrggbbThe tops (default #b23cff).0×travelnumberSeconds of the break: it brightens, folds deepen, rays race, the others unroll (default 1).0×Where it goes
Examples
aurora#fieldin backgrounds/auroraOpen and play →aurora#field(type=fold size="1920 1080" background=#090909
hue=0.432628185 hue-spread=0.475928009 hue-travel=2.59631872
chroma=0.126520902 lightness=0.559137285 colour-cycle=0.221315101
theta=2.12214422 shear=0.95765543 shrink=0.94974196 layers=76
warp-freq-x=0.413616508 warp-freq-y=2.20145202 warp-amp-x=0.121843673 warp-amp-y=0.027238626
aspect-x=2.0378406 aspect-y=0.135586098 offset-x=0.35831815 offset-y=0.0460276231
tilt=2.35065126 zoom=1.12813818 centre-x=0.292575747 centre-y=-0.446503222
glow-size=0.00243674917 falloff=0.458502769 vignette=0.140916392
flow-speed=0.598210692 flow-direction=-1 breath-rate=0.523057699 breath-amount=0.0933726057
phase=47.8891449 echo=0.328418404 echo-shift=0.127040774 softness=0.00251957518
light-swing=0.16440241)