Rect.inl

00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
00005 //
00006 // This software is provided 'as-is', without any express or implied warranty.
00007 // In no event will the authors be held liable for any damages arising from the use of this software.
00008 //
00009 // Permission is granted to anyone to use this software for any purpose,
00010 // including commercial applications, and to alter it and redistribute it freely,
00011 // subject to the following restrictions:
00012 //
00013 // 1. The origin of this software must not be misrepresented;
00014 //    you must not claim that you wrote the original software.
00015 //    If you use this software in a product, an acknowledgment
00016 //    in the product documentation would be appreciated but is not required.
00017 //
00018 // 2. Altered source versions must be plainly marked as such,
00019 //    and must not be misrepresented as being the original software.
00020 //
00021 // 3. This notice may not be removed or altered from any source distribution.
00022 //
00024 
00025 
00029 template <typename T>
00030 sfRect<T>::sfRect() :
00031 Left  (0),
00032 Top   (0),
00033 Right (0),
00034 Bottom(0)
00035 {
00036 
00037 }
00038 
00039 
00043 template <typename T>
00044 sfRect<T>::sfRect(T LeftCoord, T TopCoord, T RightCoord, T BottomCoord) :
00045 Left  (LeftCoord),
00046 Top   (TopCoord),
00047 Right (RightCoord),
00048 Bottom(BottomCoord)
00049 {
00050 
00051 }
00052 
00053 
00057 template <typename T>
00058 T sfRect<T>::GetWidth() const
00059 {
00060     return Right - Left;
00061 }
00062 
00063 
00067 template <typename T>
00068 T sfRect<T>::GetHeight() const
00069 {
00070     return Bottom - Top;
00071 }
00072 
00073 
00077 template <typename T>
00078 bool sfRect<T>::Contains(T X, T Y) const
00079 {
00080     return (X >= Left) && (X <= Right) && (Y >= Top) && (Y <= Bottom);
00081 }
00082 
00083 
00087 template <typename T>
00088 bool sfRect<T>::Intersects(const sfRect<T>& Rect, sfRect<T>* OverlappingRect) const
00089 {
00090     // Compute overlapping rect
00091     sfRect Overlapping(std::max(Left,   Rect.Left),
00092                        std::max(Top,    Rect.Top),
00093                        std::min(Right,  Rect.Right),
00094                        std::min(Bottom, Rect.Bottom));
00095 
00096     // If overlapping rect is valid, then there is intersection
00097     if ((Overlapping.Left < Overlapping.Right) && (Overlapping.Top < Overlapping.Bottom))
00098     {
00099         if (OverlappingRect)
00100             *OverlappingRect = Overlapping;
00101         return true;
00102     }
00103     else
00104     {
00105         if (OverlappingRect)
00106             *OverlappingRect = sfRect(0, 0, 0, 0);
00107         return false;
00108     }
00109 }