Takes a WaveTrain wavefront as input. Outputs grids of phase derivatives w.r.t. X and Y. The output grid spacing is given by the parameter dxy and the grid size is sufficient to span the specified apeture diameter, up to a maximum given by nxy.

Parameters
ApDiam	float	Diameter of area to be sampled (m)	Dap
nxy	int	Maximum output grid size	propnxy
dxy	float	Output grid spacing (m)	propdxy
wavelength	float	Wavelength at which this sensor responds (m)
Inputs
incident	WaveTrain	Incident WaveTrain to be sampled	WaveTrain()
on	bool	Flag indicating whether or not the sensor is on	true
exposureInterval	double	Exposure interval	0.001
exposureLength	double	Exposure length	0.000001
sampleInterval	double	Amount of time between samples (s)	0.0
Outputs
Dx	Grid<float>	Derivatives of phase w.r.t. X on grid spanning aperture (m^-1)
Dy	Grid<float>	Derivatives of phase w.r.t. Y on grid spanning aperture (m^-1)
Subsystems
Last Saved: Fri Mar 13 12:46:26 MDT 2009 by TVE version 2009B