Lines Visualize

Each frame the CPU flattens the Points input into 3D positions (arrays, [x, y, z] tuples, nested {x,y,z} structures or JSON all work), capped at 50,000 points (20,000 in Nearest Neighbor mode). It then orders them into a single path using the selected Order Mode, optionally relaxes corners (Smoothing runs up to 8 Laplacian neighbor-averaging passes; open-path endpoints stay pinned), and computes normalized cumulative arc length for every vertex. Ordering is deterministic for a given cloud, mode and Seed.

Everything after that is GPU: the path renders as instanced capsules — one quad per subsegment, with capsule distance fields giving round caps and joints for free. Total instances = segments × curve subdivisions × fibers × kaleidoscope copies, budget-capped at 4 million (fibers, then kaleidoscope copies are reduced first; the path itself is never cut). Coordinates are Grafit units (origin at viewport center, shorter edge maps to [-1, 1]); the output texture is premultiplied alpha. Enable = false (or fewer than 2 points) clears the texture. Width/Height report the viewport-fit size, Count the number of points used, and Start Point / End Point output the live 3D positions of the visible window's ends.

Line Type 0 = Straight segments; 1 = Smooth Curve, a Catmull-Rom spline evaluated at Curve Detail (2–16) subdivisions per segment. A single shared path evaluator produces continuous positions and tangents across joints, so offset fibers never tear at segment boundaries.

Draw window: Start (wrapping 0–1) and Length (0–1) select the visible slice of the path by arc length; animate Start and the line travels its own route. Fibers (1–64) renders parallel copies offset along the path's normals by Spacing, with optional fbm turbulence displacement in XY (Turbulence, Noise Scale, Noise Speed) and in Z (Turbulence Z, Noise Scale Z) — Depth Shading (0–2) then brightens +Z / darkens −Z parts for a lit-bundle look. Kaleidoscope (1–12) rotates whole copies of the result around the cloud centroid; Mirror flips every odd copy for true mirror symmetry.

Taper (0–1) blends between constant width and the selected profile.

Dashes are measured in real arc length: the pattern repeats every Dash Length + Dash Gap Grafit units, shifted by Dash Phase — animate the phase for marching-ants motion.

Path & shape

Color

Dashes & draw window

Fibers & turbulence

Symmetry & determinism

• One-line drawing: Geometry to Points → Lines Visualize (Order Mode = Nearest Neighbor) → Canvas — the cloud becomes a single meandering stroke; add Smoothing for a hand-drawn feel.
• Self-drawing animation: LFO or Time → Length (with Taper Mode = Thin End) — the line draws itself along a Hilbert or Spiral route; read End Point into a Circle generator's position so a "pen" rides the tip.
• Muscle-fiber / rope bundles: Point Animation → Lines Visualize with Fibers = 20, small Spacing, Turbulence, Spacing Variance and Width Variance up, Color Mode = Gradient: Fiber → Canvas.
• Instant mandalas: any small cloud → Order Mode = Angle Sweep, Closed Loop on, Kaleidoscope = 8, Mirror on, Additive on — rotating the source cloud spins the whole mandala.
• Neon signage / marching ants: Dash Length + animated Dash Phase on a smooth closed loop, Additive with a strong color.
• 3D undulating streams: Turbulence Z with Depth Shading = 1.5 — fibers weave in depth and shade themselves light/dark as they pass front/behind.

• Generators are invisible on their own — route Image into a Canvas node to see the result.
• The Start Point / End Point outputs are the current visible window endpoints, updated live — perfect for attaching generative objects (a glow sprite at the pen tip) that follow the animated line.
• Nearest Neighbor is the most expensive ordering (greedy search, capped at 20,000 points); Hilbert Curve gives a similar organic locality at much lower cost on dense clouds.
• The instance budget is 4,000,000 capsules; if segments × Curve Detail × Fibers × Kaleidoscope exceeds it, fibers and then kaleidoscope copies are silently reduced — lower Curve Detail on huge clouds to keep your multipliers.
• All variance and turbulence is deterministic in (Seed, time): the same patch replays identically, and changing Seed re-rolls the whole bundle at once.
• Softness replaces the global AA edge with a wide feather scaled by line width — combine with Additive for laser-glow cores.
• Companion nodes: Points Visualize draws the same clouds as dots; Point Animation, Point Morph and Point Trail upstream make the path move.