Scales a spherical harmonic (SH) vector; in other words, pOut[i] = pA[i]*Scale.
FLOAT* D3DXSHScale( _In_ FLOAT *pOut, _In_ UINT Order, _In_ const FLOAT *pIn, _In_ const FLOAT Scale );
- pOut [in]
Pointer to Spherical harmonic (SH) output coefficients. The evaluation generates Order² coefficients. See Remarks.
- Order [in]
Order of the SH evaluation. Must be in the range of D3DXSH_MINORDER to D3DXSH_MAXORDER, inclusive. The evaluation generates Order² coefficients. The degree of the evaluation is Order - 1.
- pIn [in]
Type: const FLOAT*
Pointer to the SH vector to scale.
- Scale [in]
Type: const FLOAT
Pointer to the scale value.
Pointer to SH output coefficients.
Each coefficient of the basis function Yₗₘ is stored at memory location l² + m + l, where:
- l is the degree of the basis function.
- m is the basis function index for the given l value and ranges from -l to l, inclusive.