src/core/geometry_func.hpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD 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, version 2.
   4  * OpenTTD 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.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file geometry_func.hpp Geometry functions. */
   9
  10 #ifndef GEOMETRY_FUNC_HPP
  11 #define GEOMETRY_FUNC_HPP
  12
  13 #include "geometry_type.hpp"
  14
  15 [[nodiscard]] Dimension maxdim(const Dimension &d1, const Dimension &d2);
  16
  17 /**
  18  * Check if a rectangle is empty.
  19  * @param r Rectangle to check.
  20  * @return True if and only if the rectangle doesn't define space.
  21  */
  22 inline bool IsEmptyRect(const Rect &r)
  23 {
  24         return (r.left | r.top | r.right | r.bottom) == 0;
  25 }
  26
  27 Rect BoundingRect(const Rect &r1, const Rect &r2);
  28
  29 #endif /* GEOMETRY_FUNC_HPP */