Indistinct_Knots_in_NURBS_Curve

This check verifies whether knots on a curve are too close to each other. If so, the curve is considered as incorrect.

This page discusses:

Context

NURBS and B-Spline curves are defined as knot vectors. A knot vector is a sequence of real numbers used to define:

  • the number of curve segments.
  • the continuity at the intersections between curve segments.
Note: If knots coincide, they are called multiple knots, or multiple weighting of knots.

If you transfer knots to a system with larger tolerances, knots that are too close to each other can become multiple knots. This can lead to undesirable changes in the continuity of the curve.

Check Information

Check Details Description
Applicable to: PartFeature
Automatic Solution:
Check Parameters:
  • Min_Gap_Knots: Length type.

    Specifies the minimum distance allowed between two adjacent knots of a NURBS curve.

  • Max_Gap_Knots: Length type.

    Specifies the maximum distance allowed between knots for them to be considered as multiple knots.