unal.od.jdiffraction.gpu

Class DoubleAngularSpectrumGPU

java.lang.Object

unal.od.jdiffraction.gpu.DoublePropagatorGPU

unal.od.jdiffraction.gpu.DoubleAngularSpectrumGPU

public class DoubleAngularSpectrumGPU
extends DoublePropagatorGPU

Computes wave diffraction through angular spectrum method with double precision.

Since:

JDiffraction 1.2

Author:

Pablo Piedrahita-Quintero (jppiedrahitaq@unal.edu.co), Carlos Trujillo (catrujila@unal.edu.co), Jorge Garcia-Sucerquia (jigarcia@unal.edu.co)

Constructor Summary

Constructors

Constructor and Description
DoubleAngularSpectrumGPU(int M, int N, double lambda, double z, double dx, double dy) Creates a new instance of DoubleAngularSpectrum.

Method Summary

Modifier and Type	Method and Description
void	diffract(jcuda.driver.CUdeviceptr devField) Performs numerical diffraction of the complex data in devField, leaving the result in devField.
void	diffract(double[] field) Performs numerical diffraction of the complex data in field, leaving the result in field.
double	getDx()
double	getDy()
double	getLambda()
int	getM()
int	getN()
double	getZ()
void	memFree()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleAngularSpectrumGPU

public DoubleAngularSpectrumGPU(int M,
                                int N,
                                double lambda,
                                double z,
                                double dx,
                                double dy)
                         throws java.io.IOException

Creates a new instance of DoubleAngularSpectrum. Also performs kernel calculations.

Parameters:

M - Number of data points on x direction.

N - Number of data points on y direction.

lambda - Wavelength.

z - Distance.

dx - Sampling pitch on x direction.

dy - Sampling pitch on y direction.

Throws:

java.io.IOException

Method Detail

diffract

public void diffract(double[] field)

Description copied from class: DoublePropagatorGPU

Performs numerical diffraction of the complex data in field, leaving the result in field. The physical layout of the complex data must be the same as in JTransforms:

field[i * 2 * N + 2 * j] = Re[i][j], field[i * 2 * N + 2 * j + 1] = Im[i][j]; 0 <= i < M, 0 <= j < N

Specified by:

diffract in class DoublePropagatorGPU

Parameters:

field - The complex field to diffract.

diffract

public void diffract(jcuda.driver.CUdeviceptr devField)

Description copied from class: DoublePropagatorGPU

Performs numerical diffraction of the complex data in devField, leaving the result in devField. devField must be a pointer to the data on the GPU memory. The physical layout of the complex data must be the same as in JTransforms:

field[i * 2 * N + 2 * j] = Re[i][j], field[i * 2 * N + 2 * j + 1] = Im[i][j]; 0 <= i < M, 0 <= j < N

Specified by:

diffract in class DoublePropagatorGPU

Parameters:

devField - The complex field to diffract.

memFree

public void memFree()

getM

public int getM()

getN

public int getN()

getZ

public double getZ()

getLambda

public double getLambda()

getDx

public double getDx()

getDy

public double getDy()