The [plexus] table

A plexus preset draws a network: points in 3D, and a line between every two that lie closer than link_distance. A link fades in as its two points approach and out as they part, so the network rewires smoothly and never pops. [plexus] decides how the points are arranged:

system = "plexus"

[plexus]
layout = "sheet"   # "cloud" (the default) or "sheet"
points = 400       # 16..=4096; the default is 300
seed   = 3         # optional; absent, the preset's own [generator] seed

All three keys are read once, at load, and are not bindable. An unknown layout, or a point count outside 16..=4096, is a load error.

layout	The points	Reads
cloud	Scattered through a cube two units across, drifting on a smooth seeded current. A point fades out as it reaches a face and fades back in on the opposite one.	drift
sheet	A jittered grid on a flat square, rippled up and down by a seeded swell. A point keeps its place in the grid, so the mesh ripples rather than rewiring.	drift, wave, wave_scale

The camera orbits the network’s centre. yaw turns it round, pitch raises it, distance moves it in and out and fov is its field of view; the engine-wide zoom narrows the field of view and pan_x / pan_y slide the picture. A slow orbit is yaw = "time * 0.05". A sheet reads best seen across at a grazing angle, which is what the default pitch of 0.25 gives.

Depth of field. focus places the focal plane in the network’s depth, 0 at its nearest point and 1 at its farthest, so it means the same whatever the camera’s distance. aperture is how strongly anything off that plane blurs: 0 keeps every line sharp. One line can cross the focal plane sharp and soften toward both ends, and a blurred line dims as it spreads, so the light it carries stays the same. In pixels, aperture is the blur of the far background: behind the focal plane a line approaches it and never passes it. In front of the focal plane the blur grows past it, and grows faster the closer the camera is. Wide blur costs fill, so the quality tier caps it at 12 px on Floor and 24 on Rich, and a close camera’s near strands draw at that cap on either tier. That is the lens’s ceiling and is not reported. An aperture past the cap, where the background itself draws sharper than asked, draws at the cap and says so. The same pair of parameters blurs the attractor’s 3D families.

line_width and node_size are pixels at the focal plane: nearer lines are wider and farther ones thinner. node_size = "0" draws no dots at all. Lines and dots take their colour from their depth, near to far, through hue_center and hue_spread, so palette_steps bands the network by distance.

points and the number of links are capped by the quality tier: the Floor tier draws 600 points and 6000 links, the Rich tier 1500 and 20000. A preset past either runs at the cap and says so. Author against the Floor caps.

The range that reads for each parameter, and the layouts it is inert on, is printed in the plexus table of Parameter roster.