/*
 * Copyright (C) 2012-2016 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/
#ifndef _GAZEBO_PLANE_HH_
#define _GAZEBO_PLANE_HH_

#include <ignition/math/Plane.hh>

#include "gazebo/math/Vector3.hh"
#include "gazebo/math/Vector2d.hh"
#include "gazebo/util/system.hh"

namespace gazebo
{
  namespace math
  {
    /// \addtogroup gazebo_math
    /// \{

    /// \class Plane Plane.hh math/gzmath.hh
    /// \brief A plane and related functions.
    class GZ_MATH_VISIBLE Plane
    {
      /// \brief Constructor
      public: Plane();

      /// \brief Constructor from a normal and a distanec
      /// \param[in] _normal The plane normal
      /// \param[in] _offset Offset along the normal
      public: Plane(const Vector3 &_normal, double _offset = 0.0);

      /// \brief Constructor
      /// \param[in] _normal The plane normal
      /// \param[in] _size Size of the plane
      /// \param[in] _offset Offset along the normal
      public: Plane(const Vector3 &_normal, const Vector2d &_size,
                    double _offset);

      /// \brief Copy constructor for ignition::math::Plane
      /// \param[in] _plane Plane to copy
      public: Plane(const ignition::math::Planed &_plane);

      /// \brief Destructor
      public: virtual ~Plane();

      /// \brief Set the plane
      /// \param[in] _normal The plane normal
      /// \param[in] _size Size of the plane
      /// \param[in] _offset Offset along the normal
      public: void Set(const Vector3 &_normal, const Vector2d &_size,
                       double offset);

      /// \brief Get distance to the plane give an origin and direction
      /// \param[in] _origin the origin
      /// \param[in] _dir a direction
      /// \return the shortest distance
      public: double Distance(const Vector3 &_origin,
                              const Vector3 &_dir) const;

      /// \brief Equal operator
      /// \param _p another plane
      /// \return itself
      public: Plane &operator =(const Plane &_p);

      /// \brief Equal operator for ignition::math::Plane
      /// \param _p Ignition math plane
      /// \return itself
      public: Plane &operator =(const ignition::math::Planed &_p);

      /// \brief Convert this to igntion::math::Planed
      /// \return This plane converted to ignition::math::Planed.
      public: ignition::math::Planed Ign() const;

      /// \brief Plane normal
      public: Vector3 normal;

      /// \brief Plane size
      public: Vector2d size;

      /// \brief Plane offset
      public: double d;
    };
    /// \}
  }
}
#endif



