System: attractor

Structural

Parameter	Default	Range	What it does	Group
tuple	0		Picks a whole known-good figure - family, coefficients and framing together.	shape, main
palette_steps	0	0 – 16	Quantizes the palette into this many flat bands; 0 leaves it continuous.	colour

Modal

Parameter	Default	Range	What it does	Group
a	0	de_jong -3 – 3; clifford -2 – 2; thomas 0 – 0.25; lorenz 5 – 20; inert on fern, tree, dragon, sierpinski, spiral	First of the four family coefficients; what it means depends on the attractor family the tuple picked.	shape
b	0	de_jong -3 – 3; clifford -2 – 2; lorenz 20 – 130; inert on thomas, fern, tree, dragon, sierpinski, spiral	Second family coefficient - see the roster’s attractor essay for what each family does with it.	shape
c	0	de_jong -3 – 3; clifford -2 – 2; lorenz 0.5 – 4.5; inert on thomas, fern, tree, dragon, sierpinski, spiral	Third family coefficient, and on the IFS figures it means nothing at all.	shape
d	0	de_jong -3 – 3; clifford -2 – 2; inert on thomas, lorenz, fern, tree, dragon, sierpinski, spiral	Fourth family coefficient; like the other three it is inert on the IFS figures.	shape
size	1	0 – 4	Size of each particle’s deposit into the accumulation.	shape, main
hue	0	0 – 1	Where this scene reads from the palette, as a coordinate along it rather than a colour.	colour, main
brightness	1	0 – 2	The scene’s overall light level, multiplying what it draws before the composite.	light, main
fade	0.94	0 – 1	How much of the accumulation survives each second; near 1 the figure builds up for a long time.	light
hue_spread	0.15	0 – 1	How far across the palette the particle band reaches.	colour
hue_center	0.075	0 – 1	Where that band sits along the palette.	colour
saturation	1	0 – 1	Pulls the scene’s colour toward grey; 0 is fully desaturated, 1 is the palette’s own.	colour
palette_mix	0	0 – 1	Crossfades from the preset’s palette to its second one; 0 is the first, 1 the second.	colour
palette_contour	0	0 – 1	Draws a line at each band edge when the palette is stepped; 0 draws none.	colour
zoom	1	0.25 – 4	Scales the whole scene about its centre; above 1 fills more of the frame.	shape
pan_x	0		Slides the whole scene sideways, in the scene’s own units rather than pixels.	shape
pan_y	0		Slides the whole scene vertically, in the scene’s own units rather than pixels.	shape
reseed	0	0 – 1	Crossing zero throws every particle back onto a fresh start position.	motion
perspective	0	0 – 1	How strongly depth shrinks a particle, turning a flat figure into a solid one.	shape
focus	0.5	0 – 1	Where the focal plane sits in a 3D figure’s depth: 0 at its nearest point, 1 at its farthest.	light
aperture	0	0 – 24	The blur of a 3D figure’s far side, in pixels; its near side blurs more, up to the tier’s cap. Inert on the flat maps.	light
depth_fade	0	0 – 1	How much depth dims a particle, which is what reads as air between the layers.	light
depth_hue	0	-1 – 1	Shifts colour with depth, so far parts of the figure sit elsewhere on the palette.	colour
spin	0	-2 – 2	Turns per second the figure rotates by about its vertical axis.	motion, main
morph	0	0 – 1	Travels between the tuple’s figure and the next one; the visible rate is steepest near zero.	motion
curl	0	-2 – 2	Adds a rotational term to the map, curling the trajectories.	motion
vigor	1	0 – 4	How far a particle moves per step, so higher spreads the figure and thins it.	motion
lean	0	-1 – 1	Tilts the map, breaking the figure’s symmetry.	motion
bias	0	-1 – 1	Offsets the map, sliding the figure within its own attractor.	motion
map_tint	0	0 – 1	How much a particle’s colour follows which branch of the map produced it.	colour
map_hue	0	-1 – 1	How far apart on the palette those branches are placed.	colour
root_tint	0	0 – 1	How much a particle’s colour follows the seed it started from.	colour
root_hue	0	-1 – 1	How far apart on the palette those seeds are placed.	colour
emergence	8	0 – 60	How many seconds the figure takes to settle out of its starting cloud.	motion
fb_zoom	1	0.9 – 1.1	Scale the attractor’s own accumulation is grown by each second.	post
fb_rotate	0	-1 – 1	Turns per second that accumulation is rotated by.	post
fb_dx	0	-1 – 1	Sideways drift of that accumulation, in frame widths per second.	post
fb_dy	0	-1 – 1	Vertical drift of that accumulation, in frame heights per second.	post
fb_center_x	0.5	0 – 1	The horizontal point its zoom and rotation pivot about, in uv.	post
fb_center_y	0.5	0 – 1	The vertical point its zoom and rotation pivot about, in uv.	post
fb_warp	0	0 – 0.5	Amplitude of a swirl added to its feedback sample, so the trail curls.	post