#include <GU_VoxelFFT.h>

Classes
class	gu_fft

Public Member Functions
	GU_VoxelFFT ()

virtual	~GU_VoxelFFT ()

void	fft (UT_VoxelArrayF &re, UT_VoxelArrayF &im, bool invert, bool shift, bool normalize, int sliceaxis=-1, bool realdata=false)

void	fft (const UT_ValArray< UT_VoxelArrayF * > &re, const UT_ValArray< UT_VoxelArrayF * > &im, bool invert, bool shift, bool normalize, int sliceaxis=-1, bool realdata=false)

Protected Member Functions
void	computeFFTDims (const UT_VoxelArrayF &re, int &sliceaxis, int &ndims, int *dims, int &slicetransforms, UT_Vector3I &axes)

virtual void	fftSequence (const UT_ValArray< UT_VoxelArrayF * > &realvox, const UT_ValArray< UT_VoxelArrayF * > &imagvox, int begin, int end, bool invert, bool shift, bool normalize, int sliceaxis, bool realdata)

void	fftSequence (gu_fft &fft, const UT_ValArray< UT_VoxelArrayF * > &realvox, const UT_ValArray< UT_VoxelArrayF * > &imagvox, int begin, int end, bool invert, bool shift, bool normalize, int sliceaxis, bool realdata)

	THREADED_METHOD8 (GU_VoxelFFT, resrc.numTiles() > 16, copyToComplex, const UT_VoxelArrayF &, resrc, const UT_VoxelArrayF &, imsrc, UT_ComplexF *, dst, const UT_Vector3I &, axes, bool, shift, bool, sliced, bool, realonly, bool, hermitian)

void	copyToComplexPartial (const UT_VoxelArrayF &resrc, const UT_VoxelArrayF &imsrc, UT_ComplexF *dst, const UT_Vector3I &axes, bool shift, bool sliced, bool realonly, bool hermitian, const UT_JobInfo &info)

	THREADED_METHOD9 (GU_VoxelFFT, redst.numTiles() > 16, copyFromComplex, const UT_ComplexF *, src, UT_VoxelArrayF &, redst, UT_VoxelArrayF &, imdst, fpreal32, scale, const UT_Vector3I &, axes, bool, shift, bool, sliced, bool, realonly, bool, hermitian)

void	copyFromComplexPartial (const UT_ComplexF *src, UT_VoxelArrayF &redst, UT_VoxelArrayF &imdst, fpreal32 scale, const UT_Vector3I &axes, bool shift, bool sliced, bool realonly, bool hermitian, const UT_JobInfo &info)

	THREADED_METHOD4 (GU_VoxelFFT, redst.numTiles() > 16, copyFromReal, const fpreal32 *, src, UT_VoxelArrayF &, redst, fpreal32, scale, const UT_Vector3I &, axes)

void	copyFromRealPartial (const fpreal32 *src, UT_VoxelArrayF &redst, fpreal32 scale, const UT_Vector3I &axes, const UT_JobInfo &info)

	THREADED_METHOD4 (GU_VoxelFFT, resrc.numTiles() > 16, copyToReal, const UT_VoxelArrayF &, resrc, fpreal32 *, dst, fpreal32, scale, const UT_Vector3I &, axes)

void	copyToRealPartial (const UT_VoxelArrayF &resrc, fpreal32 *dst, fpreal32 scale, const UT_Vector3I &axes, const UT_JobInfo &info)

Detailed Description

Definition at line 21 of file GU_VoxelFFT.h.

Constructor & Destructor Documentation

GU_VoxelFFT::GU_VoxelFFT ( )

inline

Definition at line 25 of file GU_VoxelFFT.h.

virtual GU_VoxelFFT::~GU_VoxelFFT ( )

virtual

Member Function Documentation

void GU_VoxelFFT::computeFFTDims	(	const UT_VoxelArrayF &	re,
		int &	sliceaxis,
		int &	ndims,
		int *	dims,
		int &	slicetransforms,
		UT_Vector3I &	axes
	)

protected

void GU_VoxelFFT::copyFromComplexPartial	(	const UT_ComplexF *	src,
		UT_VoxelArrayF &	redst,
		UT_VoxelArrayF &	imdst,
		fpreal32	scale,
		const UT_Vector3I &	axes,
		bool	shift,
		bool	sliced,
		bool	realonly,
		bool	hermitian,
		const UT_JobInfo &	info
	)

protected

void GU_VoxelFFT::copyFromRealPartial	(	const fpreal32 *	src,
		UT_VoxelArrayF &	redst,
		fpreal32	scale,
		const UT_Vector3I &	axes,
		const UT_JobInfo &	info
	)

protected

void GU_VoxelFFT::copyToComplexPartial	(	const UT_VoxelArrayF &	resrc,
		const UT_VoxelArrayF &	imsrc,
		UT_ComplexF *	dst,
		const UT_Vector3I &	axes,
		bool	shift,
		bool	sliced,
		bool	realonly,
		bool	hermitian,
		const UT_JobInfo &	info
	)

protected

void GU_VoxelFFT::copyToRealPartial	(	const UT_VoxelArrayF &	resrc,
		fpreal32 *	dst,
		fpreal32	scale,
		const UT_Vector3I &	axes,
		const UT_JobInfo &	info
	)

protected

void GU_VoxelFFT::fft	(	UT_VoxelArrayF &	re,
		UT_VoxelArrayF &	im,
		bool	invert,
		bool	shift,
		bool	normalize,
		int	sliceaxis = `-1`,
		bool	realdata = `false`
	)

Perform a forward or inverse FFT on the pair of 2D or 3D voxel arrays representing real and imaginary parts of the complex input and output. If invert is true, this function computes an inverse FFT. Shift assumes the frequency-space data is shifted on input or output so that the DC (zero-th) frequency is in the center, similar to Matlab's fftshift and ifftshift functions. Normalize applies a 1/N normalization factor to the inverse FFT so that a forward FFT followed by inverse FFT yields the original input. If sliceaxis is 0, 1, or 2, a 3D input array will be treated as a series of 2D FFTs sliced along the specified axis. NOTE: as with most FFTs, performance is best with input arrays whose dimensions are powers of 2.

void GU_VoxelFFT::fft	(	const UT_ValArray< UT_VoxelArrayF * > &	re,
		const UT_ValArray< UT_VoxelArrayF * > &	im,
		bool	invert,
		bool	shift,
		bool	normalize,
		int	sliceaxis = `-1`,
		bool	realdata = `false`
	)

Performs forward or inverse FFT's on several pairs of 2D or 3D voxel arrays representing real and imaginary parts of the complex input and output. All sequential complex pairs with the same resolution are transformed at once, which can yield signicant speedups. If invert is true, this function computes an inverse FFT. Shift assumes the frequency-space data is shifted on input or output so that the DC (zero-th) frequency is in the center, similar to Matlab's fftshift and ifftshift functions. Normalize applies a 1/N normalization factor to the inverse FFT so that a forward FFT followed by inverse FFT yields the original input. If sliceaxis is 0, 1, or 2, a 3D input array will be treated as a series of 2D FFTs sliced along the specified axis. NOTE: as with most FFTs, performance is best with input arrays whose dimensions are powers of 2.

virtual void GU_VoxelFFT::fftSequence	(	const UT_ValArray< UT_VoxelArrayF * > &	realvox,
		const UT_ValArray< UT_VoxelArrayF * > &	imagvox,
		int	begin,
		int	end,
		bool	invert,
		bool	shift,
		bool	normalize,
		int	sliceaxis,
		bool	realdata
	)

protectedvirtual

void GU_VoxelFFT::fftSequence	(	gu_fft &	fft,
		const UT_ValArray< UT_VoxelArrayF * > &	realvox,
		const UT_ValArray< UT_VoxelArrayF * > &	imagvox,
		int	begin,
		int	end,
		bool	invert,
		bool	shift,
		bool	normalize,
		int	sliceaxis,
		bool	realdata
	)

protected

GU_VoxelFFT::THREADED_METHOD4	(	GU_VoxelFFT	,
		redst.	numTiles(),
		16	,
		copyFromReal	,
		const fpreal32 *	,
		src	,
		UT_VoxelArrayF &	,
		redst	,
		fpreal32	,
		scale	,
		const UT_Vector3I &	,
		axes
	)

protected

GU_VoxelFFT::THREADED_METHOD4	(	GU_VoxelFFT	,
		resrc.	numTiles(),
		16	,
		copyToReal	,
		const UT_VoxelArrayF &	,
		resrc	,
		fpreal32 *	,
		dst	,
		fpreal32	,
		scale	,
		const UT_Vector3I &	,
		axes
	)

protected

GU_VoxelFFT::THREADED_METHOD8	(	GU_VoxelFFT	,
		resrc.	numTiles(),
		16	,
		copyToComplex	,
		const UT_VoxelArrayF &	,
		resrc	,
		const UT_VoxelArrayF &	,
		imsrc	,
		UT_ComplexF *	,
		dst	,
		const UT_Vector3I &	,
		axes	,
		bool	,
		shift	,
		bool	,
		sliced	,
		bool	,
		realonly	,
		bool	,
		hermitian
	)

protected

GU_VoxelFFT::THREADED_METHOD9	(	GU_VoxelFFT	,
		redst.	numTiles(),
		16	,
		copyFromComplex	,
		const UT_ComplexF *	,
		src	,
		UT_VoxelArrayF &	,
		redst	,
		UT_VoxelArrayF &	,
		imdst	,
		fpreal32	,
		scale	,
		const UT_Vector3I &	,
		axes	,
		bool	,
		shift	,
		bool	,
		sliced	,
		bool	,
		realonly	,
		bool	,
		hermitian
	)

protected

The documentation for this class was generated from the following file:

GU/GU_VoxelFFT.h

Classes

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation