CastReflectionRay

Calculates the vectors of direction for secondary rays.

Syntax

IppStatus ipprCastReflectionRay_32f(const Ipp32f* const pIncident[3], const Ipp32s* pMask, const Ipp32f* const pSurfNorm[3], Ipp32f* pDirection[3], int len);

Parameters

pIncident	Pointer to the array of pointers to separate coordinate (x, y, z) planes of the incident rays.
pMask	Pointer to the array of masks.
pSurfNorm	Pointer to the array of pointers to separate coordinate (x, y, z) planes of the normals at the intersection point.
pDirection	Pointer to the array of pointers to separate coordinate (x, y, z) planes of the destination vector.
len	Number of rays.

Description

The function ipprCastReflectionRay is declared in the ippr.h file. This function calculates the vector of direction of the reflected ray in accordance with the formula:

R = I - 2 * <I*N> * N,

where R is the reflected vector, I is the incident vector, N is the normal vector.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error condition if one of the specified pointers is `NULL`.