getPointAt method
u
- A position on the curve according to the arc length. Must
be in the range 0, 1
.
optionalTarget
— (optional) If specified, the result will be
copied into this Vector, otherwise a new Vector will be created.
Returns a vector for a given position on the curve according to the arc length.
Implementation
Vector? getPointAt(double u, [Vector? optionalTarget]) {
final t = getUtoTmapping(u);
return getPoint(t, optionalTarget);
}