Extrusion delta for the segment (0 for travel).
FeatureRole index; 0 = unknown.
mm/min; NaN when unknown.
MoveKind bitflags.
Index into layers.
Index into objects + 1; 0 = none/unknown.
Byte offset in the source of the command that produced this segment.
Index into tools.
Ordered motion segments as parallel typed arrays of length
count. Positions are Float32 deltas relative toToolpathIRHeader.originOffset. Optional channels use sentinels:feedrateNaN = unknown;feature/object0 = unknown/none.