bounding_box.cxx

   1 //  $Id: bounding_box.cxx,v 1.1 2003/07/26 11:18:47 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction game
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include "vector2d.hxx"
  21 #include "math.hxx"
  22 #include "bounding_box.hxx"
  23
  24 BoundingBox::BoundingBox()
  25   : x1(0), y1(0), x2(0), y2(0)
  26 {
  27 }
  28
  29 BoundingBox::BoundingBox(float x1_, float y1_, float x2_, float y2_)
  30   : x1(x1_), y1(y1_), x2(x2_), y2(y2_)
  31 {
  32 }
  33
  34 void
  35 BoundingBox::join(const BoundingBox& box)
  36 {
  37   x1 = Math::min(x1, box.x1);
  38   y1 = Math::min(y1, box.y1);
  39
  40   x2 = Math::max(x2, box.x2);
  41   y2 = Math::max(y2, box.y2);
  42 }
  43
  44 void
  45 BoundingBox::join(const Vector2d& pos)
  46 {
  47   x1 = Math::min(x1, pos.x);
  48   y1 = Math::min(y1, pos.y);
  49
  50   x2 = Math::max(x2, pos.x);
  51   y2 = Math::max(y2, pos.y);
  52 }
  53
  54 std::ostream& operator << (std::ostream& os, const BoundingBox& box)
  55 {
  56   return os << "[BB:"
  57             << box.x1 << ", " << box.y1 << ", " << box.x2 << ", " << box.y2
  58             << "]";
  59 }
  60
  61 /* EOF */