API Reference › core-geometry› Polyface › PolyfaceBuilder › FindOrAddParamInLineString

findOrAddParamInLineString Method

Add a uv parameter to the polyface, taking u from ls.fractions and v from input.

  • If index is an invalid index for ls.fractions, u is computed as index / ls.points.length.
  • The implementation is free to either create a new param or return the index of a prior param with the same coordinates.

findOrAddParamInLineString(ls: LineString3d, index: number, v: number, priorIndexA?: number, priorIndexB?: number): number

@returns the uv parameter index in the polyface.

Parameter Type Description
ls LineString3d the linestring.
index number index of the point in the linestring.
v number the v parameter.
priorIndexA number (optional) an index of a prior param to check for possible duplicate value.
priorIndexB number (optional) another index of a prior param to check for possible duplicate value.

Returns - number

the uv parameter index in the polyface.

Defined in

Last Updated: 06 December, 2025