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rectangle.cpp

00001 /*      _______   __   __   __   ______   __   __   _______   __   __                 
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00007  * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/                      
00008  *
00009  * Copyright (c) 2004, 2005 darkbits                        Js_./
00010  * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
00011  * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
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00053  */
00054 
00055 /*
00056  * For comments regarding functions please see the header file. 
00057  */
00058 
00059 #include "guichan/rectangle.hpp"
00060 
00061 namespace gcn
00062 {
00063     Rectangle::Rectangle()
00064     {
00065         x = 0;
00066         y = 0;
00067         width = 0;
00068         height = 0;
00069     }
00070     
00071     Rectangle::Rectangle(int x, int y, int width, int height)
00072     {
00073         this->x = x;
00074         this->y = y;
00075         this->width = width;
00076         this->height = height;
00077     }
00078 
00079     void Rectangle::setAll(int x, int y, int width, int height)
00080     {
00081         this->x = x;
00082         this->y = y;
00083         this->width = width;
00084         this->height = height;
00085     }
00086 
00087     bool Rectangle::intersect(const Rectangle& rectangle)
00088     {
00089         x -= rectangle.x;
00090         y -= rectangle.y;
00091     
00092         if (x < 0)
00093         {        
00094             width += x;
00095             x = 0;
00096         }
00097 
00098         if (y < 0)
00099         {      
00100             height += y;
00101             y = 0;
00102         }
00103 
00104         if (x + width > rectangle.width)
00105         {
00106             width = rectangle.width - x;
00107         }
00108 
00109         if (y + height > rectangle.height)
00110         {
00111             height = rectangle.height - y;
00112         }
00113 
00114         if (width <= 0 || height <= 0)
00115         {
00116             height = 0;
00117             width = 0;
00118             x += rectangle.x;
00119             y += rectangle.y;
00120             return false;
00121         }
00122 
00123         x += rectangle.x;
00124         y += rectangle.y;
00125         return true;
00126     }
00127 
00128     bool Rectangle::isPointInRect(int x, int y) const
00129     {
00130         return ((x >= this->x) && (y >= this->y)
00131                 && x < (this->x + this->width)
00132                 && y < (this->y + this->height));
00133     } 
00134 }

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