uvFractionToPointAndTangents Method

Convert fractional u and v coordinates to surface point and in-surface tangent directions.

  • Remark: the vectors are expected to be non-zero tangents which can be crossed to get a normal.
  • Hence the are NOT precisely either (a) partial derivatives or (b) frenet vectors

uvFractionToPointAndTangents(uFraction: number, vFraction: number, result?: Plane3dByOriginAndVectors): Plane3dByOriginAndVectors

Parameter Type Description
uFraction number fractional coordinate in u direction
vFraction number fractional coordinate in the v direction
result Plane3dByOriginAndVectors optional pre-allocated carrier for point and vectors

Returns - Plane3dByOriginAndVectors

Defined in

Last Updated: 13 June, 2024