Travel Optimize

Reorder extrusion segments within each Z layer using a greedy nearest-neighbour heuristic to minimise total travel distance. A quick win on multi-contour prints (infill, supports, multi-island layers).

Node

Interactive preview is available in the interactive reader.

Sockets

toolpath (in): Toolpath. Required.
toolpath (out): Toolpath — extrusion segments only, reordered. Travel-flagged segments are dropped (the compiler regenerates them).

Parameters

Allow segment reverse: If on, a segment may be traversed in the opposite direction when that makes the travel shorter. Default: on.
Respect layer order: If on, segments are grouped by their first-point Z and optimised within each layer; if off, every extrusion segment competes globally. Default: on.

How It Works

Drop travel-flagged segments (the compiler inserts fresh travels between extrusions automatically).
Group remaining segments by Z (if Respect layer order is on) — spirals and other multi-Z segments stay where they are.
For each group, greedy nearest-neighbour: