geometry_func.cpp

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/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */
 
#include "../stdafx.h"
#include "geometry_func.hpp"
#include "math_func.hpp"
 
#include "../safeguards.h"
 
Dimension maxdim(const Dimension &d1, const Dimension &d2)
{
  Dimension d;
  d.width  = std::max(d1.width,  d2.width);
  d.height = std::max(d1.height, d2.height);
  return d;
}
 
Rect BoundingRect(const Rect &r1, const Rect &r2)
{
  /* If either the first or the second is empty, return the other. */
  if (IsEmptyRect(r1)) return r2;
  if (IsEmptyRect(r2)) return r1;
 
  Rect r;
 
  r.top    = std::min(r1.top,    r2.top);
  r.bottom = std::max(r1.bottom, r2.bottom);
  r.left   = std::min(r1.left,   r2.left);
  r.right  = std::max(r1.right,  r2.right);
 
  return r;
}