/***********************************************************************
 * Software License Agreement (BSD License)
 *
 * Copyright 2008-2009  Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
 * Copyright 2008-2009  David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
 *
 * THE BSD LICENSE
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *************************************************************************/

#ifndef DATASET_H
#define DATASET_H

#include <stdio.h>

#include "flann/general.h"

namespace flann {



/**
* Class that implements a simple rectangular matrix stored in a memory buffer and
* provides convenient matrix-like access using the [] operators.
*/
template <typename T>
class Matrix {
public:
	typedef T type;

    size_t rows;
    size_t cols;
    T* data;

    Matrix() : rows(0), cols(0), data(NULL)
    {
    }

    Matrix(T* data_, long rows_, long cols_) :
    	 rows(rows_), cols(cols_), data(data_)
	{
	}

    /**
     * Convenience function for deallocating the storage data.
     */
    void free()
    {
        if (data!=NULL) delete[] data;
    }

	~Matrix()
	{
	}

    /**
    * Operator that return a (pointer to a) row of the data.
    */
    T* operator[](size_t index)
    {
        return data+index*cols;
    }

    T* operator[](size_t index) const
    {
        return data+index*cols;
    }
};


class UntypedMatrix
{
public:
	size_t rows;
	size_t cols;
    void* data;
    flann_datatype_t type;

    UntypedMatrix(void* data_, long rows_, long cols_) :
    	 rows(rows_), cols(cols_), data(data_)
	{
	}

    ~UntypedMatrix()
    {
    }


    template<typename T>
    Matrix<T> as()
    {
    	return Matrix<T>((T*)data, rows, cols);
    }
};



}

#endif //DATASET_H