evaluatePointAndDerivativeInSpan Method
Evaluate point and derivative vector at a position given by fractional position within a span.
- The derivative is with respect to the span fraction (NOT scaled to either global fraction or knot)
evaluatePointAndDerivativeInSpan(spanIndex: number, spanFraction: number): Ray3d
| Parameter | Type | Description |
|---|---|---|
| spanIndex | number | |
| spanFraction | number |
Defined in
Last Updated: 08 January, 2020