[−][src]Function directx_math::XMVector3AngleBetweenNormalsEst
pub fn XMVector3AngleBetweenNormalsEst(
N1: FXMVECTOR,
N2: FXMVECTOR
) -> FXMVECTOR
Estimates the radian angle between two normalized 3D vectors.
Parameters
N1 Normalized 3D vector.
N2 Normalized 3D vector.
Return value
Returns a vector. The estimate of the radian angle (between N1 and N2) is replicated to each of the
components.
Remarks
Est functions offer increased performance at the expense of reduced accuracy. Est functions are appropriate
for non-critical calculations where accuracy can be sacrificed for speed. The exact amount of lost accuracy
and speed increase are platform dependent.