function.hpp

/*
    Simple math function.
    Copyright (C) 2015 Denis BOURGE

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
    USA
*/

#ifndef HX3D_MATH_FUNCTION
#define HX3D_MATH_FUNCTION

#include <glm/vec2.hpp>
#include <functional>

namespace hx3d {
namespace math {

class Function {

public:
  Function(float init, float speed, std::function<void(float&, float&, float)> func);

  void reset();

  void step();

  glm::vec2 sample();

private:
  float _init;
  float _speed;
  float _t;

  std::function<void(float&, float&, float)> _func;
};

} /* math */
} /* hx3d */

#endif