lerp

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

The interpolant t is clamped to the range [0.0, 1.0].

• When t = 0.0 (or less), this function returns a.

• When t = 1.0 (or greater), 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.

This function does not extrapolate; t values outside the [0.0, 1.0] range are clamped to this range before interpolation. The calculation is a + (b - a) * t_clamped.

Parameters