ViewpointList.h

/*
    Hyperspace Explorer - vizualizing higher-dimensional geometry
    Copyright (C) 2010  Lene Preuss <lene.preuss@gmail.com>

    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
    (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 GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*/

#ifndef VIEWPOINTLIST_H
#define VIEWPOINTLIST_H

#include "Vector.h"


template <unsigned N, unsigned Nnew, typename NUM = double> class ViewpointList {

  public:

    ViewpointList();

    ViewpointList(NUM camW);

    ViewpointList(const VecMath::Vector<N, NUM> &single_element);
    ViewpointList(const VecMath::Vector<N, NUM> &head, const ViewpointList<N-1, Nnew, NUM> &tail);

    const VecMath::Vector<N, NUM> &head() const { return _elements.first; }
    VecMath::Vector<N, NUM> &head() { return _elements.first; }
    const ViewpointList<N-1, Nnew, NUM> &tail() const { return _elements.second; }
    ViewpointList<N-1, Nnew, NUM> &tail() { return _elements.second; }


    template <unsigned i> VecMath::Vector<N-i, NUM> get() {
      if (i == 0) return head();
      return tail().get<i-1>();
    }
//    template <> VecMath::Vector<N> get<0>() { return head(); }

    std::string toString() const { return _elements.first.toString()+", "+_elements.second.toString(); }

    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2, const VecMath::Vector<N-3, NUM> &x3);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2, const VecMath::Vector<N-3, NUM> &x3,
                              const VecMath::Vector<N-4, NUM> &x4);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2, const VecMath::Vector<N-3, NUM> &x3,
                              const VecMath::Vector<N-4, NUM> &x4, const VecMath::Vector<N-5, NUM> &x5);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2, const VecMath::Vector<N-3, NUM> &x3,
                              const VecMath::Vector<N-4, NUM> &x4, const VecMath::Vector<N-5, NUM> &x5,
                              const VecMath::Vector<N-6, NUM> &x6);
    static ViewpointList make(const VecMath::Vector<N, NUM>   &x0, const VecMath::Vector<N-1, NUM> &x1,
                              const VecMath::Vector<N-2, NUM> &x2, const VecMath::Vector<N-3, NUM> &x3,
                              const VecMath::Vector<N-4, NUM> &x4, const VecMath::Vector<N-5, NUM> &x5,
                              const VecMath::Vector<N-6, NUM> &x6, const VecMath::Vector<N-7, NUM> &x7);

  private:

    std::pair< VecMath::Vector<N, NUM>, ViewpointList<N-1, Nnew, NUM> > _elements;
};


template <unsigned N, typename NUM> class ViewpointList<N, N, NUM> {
  public:
    ViewpointList() { }
    ViewpointList(NUM) { }
    std::string toString() const { return ""; }
};

#endif