frozendistance.h

/* 
 * Copyright (C) 2006-2013  Music Technology Group - Universitat Pompeu Fabra
 *
 * This file is part of Gaia
 * 
 * Gaia is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU Affero General Public License as published by the Free 
 * Software Foundation (FSF), either version 3 of the License, or (at your 
 * option) any later version.
 * 
 * This program 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 Affero GNU General Public License
 * version 3 along with this program.  If not, see http://www.gnu.org/licenses/
 */

#ifndef GAIA_FROZENDISTANCE_H
#define GAIA_FROZENDISTANCE_H

#include <QVector>
#include <QPointer>
#include "Eigen/Dense"
#include "layoutawarefactory.h"
#include "frozendataset.h"
#include "utils.h"

namespace gaia2 {


class FrozenDistance {
public:
  FrozenDistance(const FrozenDataSet& dataset) : _dataset(dataset) {}
  virtual ~FrozenDistance() {}

  virtual void prepare(const FrozenPoint& query) { Q_UNUSED(query); }
  virtual Real operator()(int i, const FrozenPoint& query) const = 0;

  const FrozenDataSet& dataset() const { return _dataset; }

  // needed for the factory
  QString name;
  QStringList validParams;

protected:
  const FrozenDataSet& _dataset;
  //int _offset, _size;
};




typedef LayoutAwareFactory<QString, FrozenDistance, FrozenDataSet, ParameterMap> FrozenMetricFactory;
typedef FrozenMetricFactory FrozenDistanceFunctionFactory;

void registerFrozenMetrics();


} // namespace gaia2

#endif // GAIA_FROZENDISTANCE_H