This procedure determines the point on the nurbs curve at the given u value in the indexed piece.
The index is zero based (0 to number of knots - 1). The u value can range from 0 to the value of the last knot in the curve segment.
PROCEDURE NurbsCurveEvalPt(
objectHd : HANDLE;
index : LONGINT;
u : REAL;
VAR pX,pY,pZ : REAL);def vs.NurbsCurveEvalPt(objectHd, index, u):
return p| Name | Type | Description |
|---|---|---|
| objectHd | HANDLE | Handle to a NURBS curve. |
| index | LONGINT | Segment of curve to be queried. |
| u | REAL | Parameter between the minimum and maximum knot value. |
| p | REAL | Location of the u point on the curve. |
VS Functions: NurbsKnot | NurbsNumKnots
Availability: from VectorWorks9.5