TriangleAccelInit

Initializes the structure IpprTriangleAccel.

Syntax

IppStatus ipprTriangleAccelInit(IpprTriangleAccel* pTrnglAccel, const Ipp32f* pVertexCoord, const int* pTrnglIndex, int lenTrngl);

Parameters

pTrnglAccel	Pointer to the structure `IpprTriangleAccel`.
pVertexCoord	Pointer to the array of vertex coordinates.
pTrnglIndex	Pointer to the triangle's indexes.
lenTrngl	Number of the triangles in the mesh

Description

The function ipprTriangleAccelInit is declared in the ippr.h file.

This function initialize the structure pTrnglAccel in the external buffer. This structure is specifying by the number of triangles lenTrngl, their indexes pTrnglIndex, and vertex coordinates pVertexCoord. The size of the external buffer should be computed by calling the function ipprTriangleAccelGetSize beforehand.

This structure is used by the functions ipprIntersectMO, ipprIntersectEyeSO, and ipprIntersectAnySO to accelerate the searching the intersections of the rays with triangles.

The code example demonstrates how to use this function.

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`.