/home/rex/ebltrunk/core/libidx/include/geometry.h

/***************************************************************************
 *   Copyright (C) 2008 by Pierre Sermanet *
 *   pierre.sermanet@gmail.com *
 *   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Redistribution under a license not approved by the Open Source
 *       Initiative (http://www.opensource.org) must display the
 *       following acknowledgement in all advertising material:
 *        This product includes software developed at the Courant
 *        Institute of Mathematical Sciences (http://cims.nyu.edu).
 *     * The names of the authors may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``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 AUTHORS 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 GEOMETRY_H_
#define GEOMETRY_H_

#include "defines.h"
#include "stl.h"

namespace ebl {

  template <typename T = uint> class EXPORT rect {
  public:
    // constructors/destructors
  
    rect(T h0, T w0, T height, T width);
    rect();
    rect(const rect<T> &r);
    virtual ~rect();

    T h1() const;
    T w1() const;
    float hcenter() const;
    float wcenter() const;
    T area() const;
    T intersection_area(const rect<T> &r) const;
    T union_area(const rect<T> &r) const;
    float match(const rect<T> &r) const;
    float min_match(const rect<T> &r);
    float center_distance(const rect<T> &r) const;
    float center_hdistance(const rect<T> &r) const;
    float center_wdistance(const rect<T> &r) const;
    bool overlap(const rect<T> &r) const;
    float overlap_ratio(const rect<T> &r) const;
    bool min_overlap(const rect<T> &r, float hmin, float wmin) const;
    float min_overlap(const rect<T> &r) const;
    bool min_overlap(const rect<T> &r, float minarea) const;
    bool is_within(const rect<T> &r);
    void shift(T h, T w);
    void scale_centered(float sh, float sw);
    void scale_width(float woverh_ratio);
    void scale_height(float woverh_ratio);
    float radius();
    void rotate(float degree_angle);

    // operators
  
    rect<T> operator/(double d);
    rect<T> operator*(double d);
    template <typename T2>
      rect<T> operator=(rect<T2> &r2);
  
    // internal methods ////////////////////////////////////////////////////////

    void rotate_point(float alpha, float &h, float &w);

    // members /////////////////////////////////////////////////////////////////
  public:
    T h0, w0, height, width;
  };

  template <typename T>
    EXPORT std::string& operator<<(std::string& out, rect<T>& r);
  template <typename T>
    EXPORT std::string& operator<<(std::string& out, const rect<T>& r);
  template <typename T>
    EXPORT std::ostream& operator<<(std::ostream& out, rect<T>& r);
  template <typename T>
    EXPORT std::ostream& operator<<(std::ostream& out, const rect<T>& r);

} // end namespace ebl

#include "geometry.hpp"

#endif /* GEOMETRY_H_ */