lerpUnclamped

Performs an unclamped linear interpolation between two 4D vectors a and b by an interpolant/extrapolant t.

• When t = 0.0, this function returns a.

• When t = 1.0, this function returns b.

• When 0.0 < t < 1.0, the return value is a point on the line segment strictly between a and b.

• When t < 0.0 or t > 1.0, the return value is a point on the infinite line defined by a and b, extrapolated beyond the segment [a, b].

The calculation is a + (b - a) * t.

Parameters