/*
 *    This file is part of darktable,
 *    copyright (c) 2016 tobias ellinghaus.
 *
 *    darktable 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 Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "chart/common.h"

point_t transform_coords(point_t p, point_t *bb)
{
  point_t result;
  float e, f;

  e = (bb[BOTTOM_LEFT].x - bb[TOP_LEFT].x) * p.y + bb[TOP_LEFT].x;
  f = (bb[BOTTOM_RIGHT].x - bb[TOP_RIGHT].x) * p.y + bb[TOP_RIGHT].x;
  result.x = (f - e) * p.x + e;

  e = (bb[TOP_RIGHT].y - bb[TOP_LEFT].y) * p.x + bb[TOP_LEFT].y;
  f = (bb[BOTTOM_RIGHT].y - bb[BOTTOM_LEFT].y) * p.x + bb[BOTTOM_LEFT].y;
  result.y = (f - e) * p.y + e;

  return result;
}

// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.sh
// vim: shiftwidth=2 expandtab tabstop=2 cindent
// kate: tab-indents: off; indent-width 2; replace-tabs on; indent-mode cstyle; remove-trailing-spaces
// modified;
