/*
* Copyright (C) 2007-2009 Anael Orlinski & Pablo d'Angelo
*
* This file is part of Panomatic.
*
* Panomatic 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
* (at your option) any later version.
* 
* Panomatic is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* 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 Panomatic; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef __lfeat_circularkeypointdescriptor_h
#define __lfeat_circularkeypointdescriptor_h

#include "Image.h"
#include "KeyPoint.h"
#include "KeyPointDescriptor.h"

namespace lfeat {

struct SampleSpec
{
	double x,y, size;
};

class LFIMPEX CircularKeyPointDescriptor : public KeyPointDescriptor
{
public:
    CircularKeyPointDescriptor(Image& iImage, 
							   std::vector<int> rings = std::vector<int>(),
							   std::vector<double> ring_radius = std::vector<double>(),
							   std::vector<double> ring_gradient_width = std::vector<double>(),
							   int ori_bins=18, double ori_sample_scale=4, int ori_gridsize=11);
	~CircularKeyPointDescriptor();

	void makeDescriptor(KeyPoint& ioKeyPoint) const;
	int getDescriptorLength() const	{ return _descrLen; };
	int assignOrientation(KeyPoint& ioKeyPoint, double angles[4]) const;

protected:
	void createDescriptor(KeyPoint& ioKeyPoint) const;

private:
	// orig image info
	Image&			_image;
	int _vecLen;
	int _subRegions;
	int _descrLen;
	SampleSpec * _samples;
	const int _ori_nbins;
	const double _ori_sample_scale;
	const int _ori_gridsize;
	double *_ori_hist;
};

}

#endif //__lfeat_keypointdescriptor_h