shapes.h

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/*
 * Copyright (c) 2012-2015:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * 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 Lesser General Public License for more details.
 */
 
#ifndef __H__UG_shapes__
#define __H__UG_shapes__
 
#include "math_util.h"
#include <iostream>
 
namespace ug{
 
template <class vector_t>
class Sphere{
  public:
    Sphere()  {}
    Sphere(const vector_t& nCenter, number nRadius) :
      center(nCenter), radius(nRadius)  {}
 
    bool contains_point(const vector_t& point) const;
 
    bool intersects(const Sphere& sphere) const;
 
    vector_t  center;
    number    radius;
};
 
 
template <class vector_t>
struct AABox{
  AABox() {}
  AABox(const vector_t& nMin, const vector_t& nMax) : min(nMin), max(nMax)  {}
 
  AABox(const vector_t* points, size_t numPoints);
 
  AABox(const AABox& b1, const AABox& b2);
 
  AABox(const Sphere<vector_t>& s);
 
  AABox(const AABox& b, const vector_t& v);
 
  vector_t center() const;
 
  vector_t extension() const;
 
  bool contains_point(const vector_t& point) const;
 
  bool overlaps_line(const vector_t& point1, const vector_t& point2) const;
 
  vector_t min;
  vector_t max;
};
 
 
template <class vector_t>
std::ostream& operator << (std::ostream& out, const AABox<vector_t>& box) {
  out << box.min << "-" << box.max;
  return out;
}
 
}// end of namespace
 
 
#include "shapes_impl.h"
 
#endif