Unproject

Unprojects a 3D vector or array of vectors projected to the screen.

Syntax

IppStatus ippmUnproject_m4v3_32f (const Ipp32f* pWorld, const Ipp32f* pView, const Ipp32f* pProj, const Ipp32f* pSrc, Ipp32f vpWidth, Ipp32f vpHeight, Ipp32f vpZnear, Ipp32f vpZfar, Ipp32f* pDst);

IppStatus ippmUnproject_m4v3a_32f (const Ipp32f* pWorld, const Ipp32f* pView, const Ipp32f* pProj, const Ipp32f* pSrc, int srcStride0, Ipp32f vpWidth, Ipp32f vpHeight, Ipp32f vpZnear, Ipp32f vpZfar, Ipp32f* pDst, int dstStride0, int count);

Parameters

pWorld: Pointer to the world matrix.
pView: Pointer to the viewport matrix.
pProj: Pointer to the projection matrix.
pSrc: Pointer to the source vector or array of vectors.
srcStride0: Stride between the vectors in the source array.
vpWidth: Width of the viewport.
vpHeight: Height of the viewport.
vpZnear: Minimum depth of the viewport.
vpZfar: Maximum depth of the viewport.
pDst: Pointer to the destination vector or array of vectors.
dstStride0: Stride between the vectors in the destination array.
count: The number of vectors in the arrays.

Description

The functions ippmUnproject_m4v3_32f and ippmUnproject_m4v3a_32f are declared in the ippm.h file. These functions unproject a 3D vector and an array of 3D vectors, respectively. The ippmUnproject_m4v3_32f function performs an inverse operation of the ippmProject_m4v3_32f function. The ippmUnproject_m4v3a_32f function performs an inverse operation of the ippmProject_m4v3a_32f function.

Return Values

ippStsNoErr

Indicates no parameter checking.

Unproject

Syntax

Parameters

Description

Return Values

See Also