ID3DXPRTCompBuffer::ExtractPCA method

Extracts the per-sample principal component analysis (PCA) projection coefficients from an ID3DXPRTCompBuffer compressed data buffer.

Syntax

HRESULT ExtractPCA(
  [in] UINT  StartPCA,
  [in] UINT  NumExtract,
  [in] FLOAT *pPCACoefficients
);

Parameters

StartPCA [in]

Type: UINT

Starting index for PCA projection coefficients to extract from the buffer.

NumExtract [in]

Type: UINT

Number of PCA projection coefficients to extract from the buffer.

pPCACoefficients [in]

Type: FLOAT*

Pointer to the location where clustered principal component analysis (CPCA) coefficients are written. The size of the data written is (Number of Samples) * (Number of PCA Coefficients).

Return value

Type: HRESULT

If the method succeeds, the return value is S_OK. If the method fails, the following value will be returned.

Requirements

Requirement	Value
Header	D3DX9Mesh.h
Library	D3dx9.lib

See also

ID3DXPRTCompBuffer