/*
 * PointCloudAdaptor.hpp
 *
 *  Created on: Feb 21, 2011
 *      Author: heber
 */

#ifndef POINTCLOUDADAPTOR_HPP_
#define POINTCLOUDADAPTOR_HPP_

// include config.h
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "CodePatterns/Assert.hpp"
#include "IPointCloud.hpp"
#include "Tesselation/TesselPoint.hpp"
#include "LinearAlgebra/Vector.hpp"

/** Adaptor class to IPointCloud, specialized for all needed classes.
 */
template <class container_type,
          class iterator_type = typename container_type::iterator>
class PointCloudAdaptor: public IPointCloud
{
public:
  PointCloudAdaptor(container_type *_list, const std::string _name) :
    list(_list),
    name(_name)
  {}
  virtual ~PointCloudAdaptor()
  {
    list = NULL;
  }

  const std::string& GetName() const
  {
    return name;
  }
  Vector *GetCenter() const
  {
    Vector *Center = new Vector(0., 0., 0.);
    int num = 0;
    for (iterator_type iter = iterator_type(list->begin());
        iter != iterator_type(list->end());
        ++iter) {
      (*Center) += ((*iter)->getPosition());
      num++;
    }
    Center->Scale(1. / num);
    return Center;
  }

  TesselPoint *GetPoint()
  {
    ASSERT(!IsEnd(), "PointCloudAdaptor<T>::getPoint() - invalid InternalIterator.");
    return (*InternalIterator)->getTesselPoint();
  }
  int GetMaxId() const
  {
    int maxid = -1;
    for (iterator_type iter = iterator_type(list->begin());
        iter != iterator_type(list->end());
        ++iter) {
      if ((maxid == -1) || ((*iter)->getNr() > maxid)) {
        maxid = (*iter)->getNr();
      }
    }
    return maxid;
  }
  void GoToNext()
  {
    if (InternalIterator != iterator_type(list->end()))
      ++InternalIterator;
  }
  void GoToFirst()
  {
    InternalIterator = iterator_type(list->begin());
  }
  bool IsEmpty() const
  {
    return list->begin() == list->end();
  }
  bool IsEnd() const
  {
    return InternalIterator == iterator_type(list->end());
  }

private:
  container_type *list;
  iterator_type InternalIterator;
  const std::string name;
};



#endif /* POINTCLOUDADAPTOR_HPP_ */