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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<h1>plrect.h</h1><div class="fragment"><pre>00001 <span class="comment">/*</span>
00002 <span class="comment">/--------------------------------------------------------------------</span>
00003 <span class="comment">|</span>
00004 <span class="comment">| $Id: plrect_8h-source.html,v 1.4 2004/09/15 15:26:32 uzadow Exp $</span>
00005 <span class="comment">|</span>
00006 <span class="comment">| Copyright (c) 1996-2002 Ulrich von Zadow</span>
00007 <span class="comment">|</span>
00008 <span class="comment">\--------------------------------------------------------------------</span>
00009 <span class="comment">*/</span>
00010
00011 <span class="preprocessor">#ifndef INCL_PLRECT</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLRECT</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#include "plpoint.h"</span>
00015 <span class="comment"></span>
00016 <span class="comment">//! Simple rectangle class.</span>
00017 <span class="comment">//! Contains all points from tl up to but not including br.</span>
<a name="l00018"></a><a class="code" href="classPLRect.html">00018</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLRect.html">PLRect</a>
00019 {
00020 <span class="keyword">public</span>:<span class="comment"></span>
00021 <span class="comment"> //!</span>
00022 <span class="comment"></span> <a class="code" href="classPLPoint.html">PLPoint</a> tl;<span class="comment"></span>
00023 <span class="comment"> //!</span>
00024 <span class="comment"></span> <a class="code" href="classPLPoint.html">PLPoint</a> br;
00025 <span class="comment"></span>
00026 <span class="comment"> //!</span>
00027 <span class="comment"></span> <a class="code" href="classPLRect.html">PLRect</a>
00028 ();
00029 <span class="comment"></span>
00030 <span class="comment"> //!</span>
00031 <span class="comment"></span> <a class="code" href="classPLRect.html">PLRect</a>
00032 ( <span class="keywordtype">int</span> left,
00033 <span class="keywordtype">int</span> top,
00034 <span class="keywordtype">int</span> right,
00035 <span class="keywordtype">int</span> bottom
00036 );
00037 <span class="comment"></span>
00038 <span class="comment"> //!</span>
00039 <span class="comment"></span> <a class="code" href="classPLRect.html">PLRect</a>
00040 ( <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& TL,
00041 <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& BR
00042 );
00043 <span class="comment"></span>
00044 <span class="comment"> //!</span>
00045 <span class="comment"></span> <span class="keywordtype">bool</span> <span class="keyword">operator</span> ==
00046 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a> & rect
00047 ) <span class="keyword">const</span>;
00048 <span class="comment"></span>
00049 <span class="comment"> //!</span>
00050 <span class="comment"></span> <span class="keywordtype">bool</span> <span class="keyword">operator</span> !=
00051 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a> & rect
00052 ) <span class="keyword">const</span>;
00053 <span class="comment"></span>
00054 <span class="comment"> //!</span>
00055 <span class="comment"></span> <span class="keywordtype">int</span> Width
00056 () <span class="keyword">const</span>;
00057 <span class="comment"></span>
00058 <span class="comment"> //!</span>
00059 <span class="comment"></span> <span class="keywordtype">int</span> Height
00060 () <span class="keyword">const</span>;
00061 <span class="comment"></span>
00062 <span class="comment"> //!</span>
00063 <span class="comment"></span> <span class="keywordtype">void</span> SetWidth
00064 (<span class="keywordtype">int</span> width
00065 );
00066 <span class="comment"></span>
00067 <span class="comment"> //!</span>
00068 <span class="comment"></span> <span class="keywordtype">void</span> SetHeight
00069 (<span class="keywordtype">int</span> height
00070 );
00071 <span class="comment"></span>
00072 <span class="comment"> //!</span>
00073 <span class="comment"></span> <span class="keywordtype">bool</span> Contains
00074 ( <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& pt
00075 ) <span class="keyword">const</span>;
00076 <span class="comment"></span>
00077 <span class="comment"> //!</span>
00078 <span class="comment"></span> <span class="keywordtype">bool</span> Contains
00079 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00080 ) <span class="keyword">const</span>;
00081 <span class="comment"></span>
00082 <span class="comment"> //!</span>
00083 <span class="comment"></span> <span class="keywordtype">bool</span> Intersects
00084 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00085 ) <span class="keyword">const</span>;
00086 <span class="comment"></span>
00087 <span class="comment"> //!</span>
00088 <span class="comment"></span> <span class="keywordtype">void</span> Expand
00089 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00090 );
00091 <span class="comment"></span>
00092 <span class="comment"> //!</span>
00093 <span class="comment"></span> <span class="keywordtype">void</span> Intersect
00094 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00095 );
00096 };
00097
00098 <span class="keyword">inline</span> PLRect::PLRect
00099 ()
00100 {}
00101
00102 <span class="keyword">inline</span> PLRect::PLRect
00103 ( <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& TL,
00104 <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& BR
00105 ): tl(TL), br(BR)
00106 {}
00107
00108 <span class="keyword">inline</span> PLRect::PLRect
00109 ( <span class="keywordtype">int</span> left,
00110 <span class="keywordtype">int</span> top,
00111 <span class="keywordtype">int</span> right,
00112 <span class="keywordtype">int</span> bottom
00113 ) : tl(left, top),
00114 br (right, bottom)
00115 {}
00116
00117 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLRect::operator ==
00118 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a> & rect
00119 ) <span class="keyword">const</span>
00120 {
00121 <span class="keywordflow">return</span> (tl == rect.tl && br == rect.br);
00122 }
00123
00124 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLRect::operator !=
00125 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a> & rect
00126 ) <span class="keyword">const</span>
00127 {
00128 <span class="keywordflow">return</span> !(rect==*<span class="keyword">this</span>);
00129 }
00130
00131 <span class="keyword">inline</span> <span class="keywordtype">int</span> PLRect::Width
00132 () <span class="keyword">const</span>
00133 {
00134 <span class="keywordflow">return</span> br.x-tl.x;
00135 }
00136
00137 <span class="keyword">inline</span> <span class="keywordtype">int</span> PLRect::Height
00138 () <span class="keyword">const</span>
00139 {
00140 <span class="keywordflow">return</span> br.y-tl.y;
00141 }
00142
00143 <span class="keyword">inline</span> <span class="keywordtype">void</span> PLRect::SetWidth
00144 (<span class="keywordtype">int</span> width
00145 )
00146 {
00147 br.x = tl.x+width;
00148 }
00149
00150 <span class="keyword">inline</span> <span class="keywordtype">void</span> PLRect::SetHeight
00151 (<span class="keywordtype">int</span> height
00152 )
00153 {
00154 br.y = tl.y+height;
00155 }
00156
00157 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLRect::Contains
00158 ( <span class="keyword">const</span> <a class="code" href="classPLPoint.html">PLPoint</a>& pt
00159 ) <span class="keyword">const</span>
00160 {
00161 <span class="keywordflow">return</span> (pt.x >= tl.x && pt.x < br.x &&
00162 pt.y >= tl.y && pt.y < br.y);
00163 }
00164
00165 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLRect::Contains
00166 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00167 ) <span class="keyword">const</span>
00168 {
00169 <a class="code" href="classPLPoint.html">PLPoint</a> brpt (rect.br.x-1, rect.br.y-1);
00170 <span class="keywordflow">return</span> Contains(rect.tl) && Contains(brpt);
00171 }
00172
00173 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLRect::Intersects
00174 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00175 ) <span class="keyword">const</span>
00176 {
00177 <span class="keywordflow">if</span> (rect.br.x <= tl.x || rect.tl.x >= br.x ||
00178 rect.br.y <= tl.y || rect.tl.y >= br.y)
00179 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00180 <span class="keywordflow">else</span>
00181 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00182 }
00183
00184 <span class="preprocessor">#ifndef min</span>
00185 <span class="preprocessor"></span><span class="preprocessor">#define min(a, b) ((a) < (b) ? (a) : (b))</span>
00186 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00187 <span class="preprocessor"></span>
00188 <span class="preprocessor">#ifndef max</span>
00189 <span class="preprocessor"></span><span class="preprocessor">#define max(a, b) ((a) < (b) ? (b) : (a))</span>
00190 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00191 <span class="preprocessor"></span>
00192 <span class="keyword">inline</span> <span class="keywordtype">void</span> PLRect::Expand
00193 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00194 )
00195 {
00196 tl.x = min(tl.x, rect.tl.x);
00197 tl.y = min(tl.y, rect.tl.y);
00198 br.x = max(br.x, rect.br.x);
00199 br.y = max(br.y, rect.br.y);
00200 }
00201
00202 <span class="keyword">inline</span> <span class="keywordtype">void</span> PLRect::Intersect
00203 ( <span class="keyword">const</span> <a class="code" href="classPLRect.html">PLRect</a>& rect
00204 )
00205 {
00206 tl.x = max(tl.x, rect.tl.x);
00207 tl.y = max(tl.y, rect.tl.y);
00208 br.x = min(br.x, rect.br.x);
00209 br.y = min(br.y, rect.br.y);
00210 }
00211
00212 <span class="preprocessor">#undef min</span>
00213 <span class="preprocessor"></span><span class="preprocessor">#undef max</span>
00214 <span class="preprocessor"></span>
00215 <span class="preprocessor">#endif</span>
00216 <span class="preprocessor"></span>
00217 <span class="comment">/*</span>
00218 <span class="comment">/--------------------------------------------------------------------</span>
00219 <span class="comment">|</span>
00220 <span class="comment">| $Log: plrect_8h-source.html,v $
00220 <span class="comment">| Revision 1.4 2004/09/15 15:26:32 uzadow
00220 <span class="comment">| Linux compatibility changes, doc update.
00220 <span class="comment">|</span>
00221 <span class="comment">| Revision 1.11 2004/06/06 12:56:38 uzadow</span>
00222 <span class="comment">| Doxygenified documentation.</span>
00223 <span class="comment">|</span>
00224 <span class="comment">| Revision 1.10 2004/02/21 18:37:08 uzadow</span>
00225 <span class="comment">| Fixed rect.Intersects() again.</span>
00226 <span class="comment">|</span>
00227 <span class="comment">| Revision 1.8 2004/02/21 16:48:24 uzadow</span>
00228 <span class="comment">| Fixed rect.Intersects()</span>
00229 <span class="comment">|</span>
00230 <span class="comment">| Revision 1.7 2003/10/15 21:24:04 uzadow</span>
00231 <span class="comment">| *** empty log message ***</span>
00232 <span class="comment">|</span>
00233 <span class="comment">| Revision 1.6 2003/08/17 18:04:38 uzadow</span>
00234 <span class="comment">| Added PLRect::Intersect()</span>
00235 <span class="comment">|</span>
00236 <span class="comment">| Revision 1.5 2003/08/17 15:04:30 uzadow</span>
00237 <span class="comment">| Added PLRect::Intersects() and Expand()</span>
00238 <span class="comment">|</span>
00239 <span class="comment">| Revision 1.4 2003/03/19 14:33:14 uzadow</span>
00240 <span class="comment">| Added Rect.Contains</span>
00241 <span class="comment">|</span>
00242 <span class="comment">| Revision 1.3 2002/03/31 13:36:42 uzadow</span>
00243 <span class="comment">| Updated copyright.</span>
00244 <span class="comment">|</span>
00245 <span class="comment">| Revision 1.2 2001/09/28 19:50:56 uzadow</span>
00246 <span class="comment">| Added some 24 bpp stuff & other minor features.</span>
00247 <span class="comment">|</span>
00248 <span class="comment">| Revision 1.1 2001/09/24 14:24:52 uzadow</span>
00249 <span class="comment">| Added PLRect.</span>
00250 <span class="comment">|</span>
00251 <span class="comment">| Revision 1.4 2001/09/16 19:03:22 uzadow</span>
00252 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00253 <span class="comment">|</span>
00254 <span class="comment">| Revision 1.3 2000/11/21 20:20:36 uzadow</span>
00255 <span class="comment">| Changed bool to bool.</span>
00256 <span class="comment">|</span>
00257 <span class="comment">| Revision 1.2 2000/01/10 23:52:59 Ulrich von Zadow</span>
00258 <span class="comment">| Changed formatting & removed tabs.</span>
00259 <span class="comment">|</span>
00260 <span class="comment">| Revision 1.1 1999/12/09 16:35:58 Ulrich von Zadow</span>
00261 <span class="comment">| Added PLRect.</span>
00262 <span class="comment">|</span>
00263 <span class="comment">|</span>
00264 <span class="comment">\--------------------------------------------------------------------</span>
00265 <span class="comment">*/</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Sep 13 16:16:40 2004 for paintlib by
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