Dogcows Code - chaz/yoink/blob - src/Moof/Rectangle.hh

   1
   2 /*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
   3 **]  All rights reserved.
   4 *
   5 * vi:ts=4 sw=4 tw=75
   6 *
   7 * Distributable under the terms and conditions of the 2-clause BSD license;
   8 * see the file COPYING for a complete text of the license.
   9 *
  10 **************************************************************************/
  11
  12 #ifndef _MOOF_RECTANGLE_HH_
  13 #define _MOOF_RECTANGLE_HH_
  14
  15 #include <Moof/Math.hh>
  16
  17
  18 namespace Mf {
  19
  20
  21 /**
  22  * Axis-aligned Bounding Box
  23  */
  24
  25 struct Rectangle
  26 {
  27         Vector2 min;
  28         Vector2 max;
  29
  30
  31         Rectangle() {}
  32
  33         Rectangle(const Vector2& a, const Vector2& b)
  34         {
  35                 init(a, b);
  36         }
  37
  38         Rectangle(Scalar ax, Scalar ay, Scalar bx, Scalar by)
  39         {
  40                 Vector2 a(ax, ay);
  41                 Vector2 b(bx, by);
  42
  43                 init(a, b);
  44         }
  45
  46         void init(const Vector2& a, const Vector2& b)
  47         {
  48                 if (a[0] < b[0])
  49                 {
  50                         min[0] = a[0];
  51                         max[0] = b[0];
  52                 }
  53                 else
  54                 {
  55                         min[0] = b[0];
  56                         max[0] = a[0];
  57                 }
  58                 if (a[1] < b[1])
  59                 {
  60                         min[1] = a[1];
  61                         max[1] = b[1];
  62                 }
  63                 else
  64                 {
  65                         min[1] = b[1];
  66                         max[1] = a[1];
  67                 }
  68         }
  69
  70         Vector2 getCenter() const
  71         {
  72                 return Vector2((min[0] + max[0]) / 2.0,
  73                                            (min[1] + max[1]) / 2.0);
  74         }
  75
  76         void getCorners(Vector2 corners[4]) const;
  77 };
  78
  79
  80 } // namespace Mf
  81
  82 #endif // _MOOF_RECTANGLE_HH_
  83