///////////////////////////////////////////////////////////////////////////////////
// File : FFT.h
///////////////////////////////////////////////////////////////////////////////////
//
// LumosQuad - A Lightning Generator
// Copyright 2007
// The University of North Carolina at Chapel Hill
// 
///////////////////////////////////////////////////////////////////////////////////
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
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//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
// 
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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//  The University of North Carolina at Chapel Hill makes no representations 
//  about the suitability of this software for any purpose. It is provided 
//  "as is" without express or implied warranty.
//
//  Permission to use, copy, modify and distribute this software and its
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///////////////////////////////////////////////////////////////////////////////////
//
//  This program uses OpenEXR, which has the following restrictions:
// 
//  Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
//  Digital Ltd. LLC
// 
//  All rights reserved.
// 
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// 

#ifndef FFT_H
#define FFT_H

#include <fftw3.h>
#include <iostream>

using namespace std;

////////////////////////////////////////////////////////////////////
/// \brief Wrapper class for FFTW
////////////////////////////////////////////////////////////////////
class FFT
{
public:
	FFT();
	virtual ~FFT();
  /// \brief convolve image and filter using FFTW
  ///
  /// \param source       source image
  /// \param kernel       convolution kernel
  /// \param xSource      width of source image
  /// \param ySource      height of source image
  /// \param xKernel      width of kernel
  /// \param yKernel      height yidth of kernel
  ///
  /// \return Returns the convolved image in the 'image' array. If the convolve fails, returns false
  static bool convolve(float* source, float* kernel, int xSource, int ySource, int xKernel, int yKernel);
};

#endif