/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2014 - Daniel De Matteis
 *  Copyright (C) 2014      - Jean-André Santoni
 * 
 *  RetroArch is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _LAKKA_TWEEN_H
#define _LAKKA_TWEEN_h

#include "math.h"

typedef float (*easingFunc)(float, float, float, float);

float inOutQuad(float, float, float, float);

typedef struct
{
   int    alive;
   float  duration;
   float  running_since;
   float  initial_value;
   float  target_value;
   float* subject;
   easingFunc easing;
} tween;

tween update_tween(tween, float);
void update_tweens(float);
void add_tween(float, float, float*, easingFunc);
void free_tweens();

#endif