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<h1>csgeom/csrect.h</h1><a href="csrect_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Crystal Space Engine: rectangle class interface</span>
<a name="l00003"></a>00003 <span class="comment"> Copyright (C) 2001 by Jorrit Tyberghein</span>
<a name="l00004"></a>00004 <span class="comment"> Copyright (C) 1998,1999 by Andrew Zabolotny <bit@eltech.ru></span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment"> This library is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> modify it under the terms of the GNU Library General Public</span>
<a name="l00008"></a>00008 <span class="comment"> License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"></span>
<a name="l00011"></a>00011 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> Library General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> You should have received a copy of the GNU Library General Public</span>
<a name="l00017"></a>00017 <span class="comment"> License along with this library; if not, write to the Free</span>
<a name="l00018"></a>00018 <span class="comment"> Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00019"></a>00019 <span class="comment">*/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef __CS_RECT_H__</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define __CS_RECT_H__</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "csextern.h"</span>
<a name="l00032"></a>00032
<a name="l00053"></a><a class="code" href="classcsRect.html">00053</a> <span class="keyword">class </span>CS_CRYSTALSPACE_EXPORT <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a>
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keyword">public</span>:
<a name="l00057"></a><a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">00057</a> <span class="keywordtype">int</span> xmin, ymin, xmax, ymax;
<a name="l00058"></a>00058
<a name="l00060"></a>00060 <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> ();
<a name="l00061"></a>00061
<a name="l00063"></a>00063 <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax);
<a name="l00064"></a>00064
<a name="l00066"></a>00066 <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &copy);
<a name="l00067"></a>00067
<a name="l00069"></a>00069 ~<a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> ();
<a name="l00070"></a>00070
<a name="l00072"></a>00072 <span class="keywordtype">void</span> Intersect (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax);
<a name="l00073"></a>00073
<a name="l00075"></a><a class="code" href="classcsRect.html#b3bd31c18d8a6e659ad8c0d83d0b35f5">00075</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Intersect (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &other)
<a name="l00076"></a>00076 { Intersect (other.<a class="code" href="classcsRect.html#00ea0f16c06bb426e5fa93f513344ab2" title="Rectangle bounds.">xmin</a>, other.<a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">ymin</a>, other.<a class="code" href="classcsRect.html#43ef15d71e44265993a01c1b518fb8cf">xmax</a>, other.<a class="code" href="classcsRect.html#29ebcabf97186ccf144ec2f068e726d2">ymax</a>); }
<a name="l00077"></a>00077
<a name="l00079"></a>00079 <span class="keywordtype">bool</span> Intersects (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &target) <span class="keyword">const</span>;
<a name="l00080"></a>00080
<a name="l00085"></a>00085 <span class="keywordtype">void</span> Union (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax);
<a name="l00086"></a>00086
<a name="l00091"></a><a class="code" href="classcsRect.html#0834916fa979a8322d6cba110c3978ae">00091</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Union (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &other)
<a name="l00092"></a>00092 { Union (other.<a class="code" href="classcsRect.html#00ea0f16c06bb426e5fa93f513344ab2" title="Rectangle bounds.">xmin</a>, other.<a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">ymin</a>, other.<a class="code" href="classcsRect.html#43ef15d71e44265993a01c1b518fb8cf">xmax</a>, other.<a class="code" href="classcsRect.html#29ebcabf97186ccf144ec2f068e726d2">ymax</a>); }
<a name="l00093"></a>00093
<a name="l00099"></a>00099 <span class="keywordtype">void</span> Exclude (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax);
<a name="l00100"></a>00100
<a name="l00102"></a><a class="code" href="classcsRect.html#45b677df1a032060d9df6dcadd7f417e">00102</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Exclude (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &other)
<a name="l00103"></a>00103 { Exclude (other.<a class="code" href="classcsRect.html#00ea0f16c06bb426e5fa93f513344ab2" title="Rectangle bounds.">xmin</a>, other.<a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">ymin</a>, other.<a class="code" href="classcsRect.html#43ef15d71e44265993a01c1b518fb8cf">xmax</a>, other.<a class="code" href="classcsRect.html#29ebcabf97186ccf144ec2f068e726d2">ymax</a>); }
<a name="l00104"></a>00104
<a name="l00109"></a>00109 <span class="keywordtype">void</span> Subtract (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &rect);
<a name="l00110"></a>00110
<a name="l00112"></a><a class="code" href="classcsRect.html#12ae235caf1eb1b30ce80644665209ad">00112</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> IsEmpty ()<span class="keyword"> const</span>
<a name="l00113"></a>00113 <span class="keyword"> </span>{ <span class="keywordflow">return</span> (xmin >= xmax) || (ymin >= ymax); }
<a name="l00114"></a>00114
<a name="l00116"></a><a class="code" href="classcsRect.html#bdbba8bbcfee4fce0c1f82c0efebfff5">00116</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> MakeEmpty ()
<a name="l00117"></a>00117 { xmin = xmax = 0; }
<a name="l00118"></a>00118
<a name="l00120"></a><a class="code" href="classcsRect.html#03b3854e1b5105ae89e31fad6e40342c">00120</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Set (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax)
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 xmin = ixmin; xmax = ixmax;
<a name="l00123"></a>00123 ymin = iymin; ymax = iymax;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00127"></a><a class="code" href="classcsRect.html#e342253839cf304143e1b95b468706bd">00127</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Set (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &target)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 xmin = target.<a class="code" href="classcsRect.html#00ea0f16c06bb426e5fa93f513344ab2" title="Rectangle bounds.">xmin</a>; xmax = target.<a class="code" href="classcsRect.html#43ef15d71e44265993a01c1b518fb8cf">xmax</a>;
<a name="l00130"></a>00130 ymin = target.<a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">ymin</a>; ymax = target.<a class="code" href="classcsRect.html#29ebcabf97186ccf144ec2f068e726d2">ymax</a>;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00134"></a><a class="code" href="classcsRect.html#b1123b6e14df91ecd657f9cfca016ea5">00134</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> SetPos (<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 <span class="keywordtype">int</span> w = Width(), h=Height();
<a name="l00137"></a>00137
<a name="l00138"></a>00138 xmin = x; ymin = y;
<a name="l00139"></a>00139 xmax = xmin+w;
<a name="l00140"></a>00140 ymax = ymin+h;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00144"></a><a class="code" href="classcsRect.html#2d69bcac7242166991602b51a27cf46b">00144</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> SetSize (<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h)
<a name="l00145"></a>00145 { xmax = xmin + w; ymax = ymin + h; }
<a name="l00146"></a>00146
<a name="l00148"></a><a class="code" href="classcsRect.html#9924d0804ffbeada0a7f55a605f6b502">00148</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Move (<span class="keywordtype">int</span> dX, <span class="keywordtype">int</span> dY)
<a name="l00149"></a>00149 { xmin += dX; xmax += dX; ymin += dY; ymax += dY; }
<a name="l00150"></a>00150
<a name="l00152"></a><a class="code" href="classcsRect.html#630af3d29f09ab394d89f3c4cf418232">00152</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> Width ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> xmax - xmin; }
<a name="l00153"></a>00153
<a name="l00155"></a><a class="code" href="classcsRect.html#c40654ef74b63a975c7e4bdc4ced14ee">00155</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> Height ()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> ymax - ymin; }
<a name="l00156"></a>00156
<a name="l00158"></a><a class="code" href="classcsRect.html#70114df6efe235c08ab7d4028289605b">00158</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> Contains (<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)<span class="keyword"> const</span>
<a name="l00159"></a>00159 <span class="keyword"> </span>{ <span class="keywordflow">return</span> (x >= xmin) && (x < xmax) && (y >= ymin) && (y < ymax); }
<a name="l00160"></a>00160
<a name="l00162"></a><a class="code" href="classcsRect.html#99a92c4b49d20a3a85ab37090b316fd0">00162</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> ContainsRel (<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)<span class="keyword"> const</span>
<a name="l00163"></a>00163 <span class="keyword"> </span>{ <span class="keywordflow">return</span> (x >= 0) && (x < Width ()) && (y >= 0) && (y < Height ()); }
<a name="l00164"></a>00164
<a name="l00166"></a><a class="code" href="classcsRect.html#ee9cf05aab162768717c98f0c4a3c55a">00166</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> Equal (<span class="keywordtype">int</span> ixmin, <span class="keywordtype">int</span> iymin, <span class="keywordtype">int</span> ixmax, <span class="keywordtype">int</span> iymax)<span class="keyword"> const</span>
<a name="l00167"></a>00167 <span class="keyword"> </span>{ <span class="keywordflow">return</span> (xmin == ixmin) && (ymin == iymin) &&
<a name="l00168"></a>00168 (xmax == ixmax) && (ymax == iymax); }
<a name="l00170"></a><a class="code" href="classcsRect.html#28f042ff0b2e8266797d29fbfb416ee2">00170</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> Equal (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &other)<span class="keyword"> const</span>
<a name="l00171"></a>00171 <span class="keyword"> </span>{ <span class="keywordflow">return</span> Equal (other.<a class="code" href="classcsRect.html#00ea0f16c06bb426e5fa93f513344ab2" title="Rectangle bounds.">xmin</a>, other.<a class="code" href="classcsRect.html#8a89993941d84448b7d31a757fc90aaf">ymin</a>, other.<a class="code" href="classcsRect.html#43ef15d71e44265993a01c1b518fb8cf">xmax</a>, other.<a class="code" href="classcsRect.html#29ebcabf97186ccf144ec2f068e726d2">ymax</a>); }
<a name="l00172"></a>00172
<a name="l00174"></a><a class="code" href="classcsRect.html#4ea6880818424780ccb4b14d6b87cde2">00174</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Normalize ()
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (xmin > xmax) { <span class="keywordtype">int</span> tmp = xmin; xmin = xmax; xmax = tmp; }
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (ymin > ymax) { <span class="keywordtype">int</span> tmp = ymin; ymin = ymax; ymax = tmp; }
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00181"></a><a class="code" href="classcsRect.html#60e4ae3c22be287cfb8cc4f4bbab509b">00181</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> Area ()<span class="keyword"> const</span>
<a name="l00182"></a>00182 <span class="keyword"> </span>{
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (IsEmpty ())
<a name="l00184"></a>00184 <span class="keywordflow">return</span> 0;
<a name="l00185"></a>00185 <span class="keywordflow">else</span>
<a name="l00186"></a>00186 <span class="keywordflow">return</span> Width () * Height ();
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00193"></a>00193 <span class="keywordtype">void</span> AddAdjacent (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &rect);
<a name="l00194"></a>00194
<a name="l00196"></a><a class="code" href="classcsRect.html#5de958974a6a3cdc1fbdcaa97169861e">00196</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator == (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a>& rect)<span class="keyword"> const</span>
<a name="l00197"></a>00197 <span class="keyword"> </span>{
<a name="l00198"></a>00198 <span class="keywordflow">return</span> Equal (rect);
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00202"></a><a class="code" href="classcsRect.html#2ec1ca26dc254478425bfcd2eed5971b">00202</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator != (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &rect)<span class="keyword"> const</span>
<a name="l00203"></a>00203 <span class="keyword"> </span>{
<a name="l00204"></a>00204 <span class="keywordflow">return</span> !Equal (rect);
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00208"></a><a class="code" href="classcsRect.html#81452e0e7e3a6890afd67cff156f858b">00208</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> Extend (<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210 <span class="keywordflow">if</span> (xmin > x) xmin = x; <span class="keywordflow">if</span> (xmax < x+1) xmax = x+1;
<a name="l00211"></a>00211 <span class="keywordflow">if</span> (ymin > y) ymin = y; <span class="keywordflow">if</span> (ymax < y+1) ymax = y+1;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00215"></a>00215 <span class="keywordtype">void</span> Join (<span class="keyword">const</span> <a class="code" href="classcsRect.html" title="Rectangle class: simple class for manipulating 2D rectangles.">csRect</a> &rect);
<a name="l00216"></a>00216
<a name="l00218"></a>00218 <span class="keywordtype">void</span> Outset(<span class="keywordtype">int</span> n);
<a name="l00219"></a>00219
<a name="l00221"></a>00221 <span class="keywordtype">void</span> Inset(<span class="keywordtype">int</span> n);
<a name="l00222"></a>00222
<a name="l00230"></a>00230 <span class="keywordtype">bool</span> ClipLineGeneral (<span class="keywordtype">int</span>& x1, <span class="keywordtype">int</span>& y1, <span class="keywordtype">int</span>& x2, <span class="keywordtype">int</span>& y2);
<a name="l00231"></a>00231
<a name="l00239"></a>00239 <span class="keywordtype">bool</span> ClipLine (<span class="keywordtype">int</span>& x1, <span class="keywordtype">int</span>& y1, <span class="keywordtype">int</span>& x2, <span class="keywordtype">int</span>& y2);
<a name="l00240"></a>00240
<a name="l00248"></a>00248 <span class="keywordtype">bool</span> ClipLineSafe (<span class="keywordtype">int</span>& x1, <span class="keywordtype">int</span>& y1, <span class="keywordtype">int</span>& x2, <span class="keywordtype">int</span>& y2);
<a name="l00249"></a>00249 };
<a name="l00250"></a>00250
<a name="l00253"></a>00253 <span class="preprocessor">#endif // __CS_RECT_H__</span>
<a name="l00254"></a>00254 <span class="preprocessor"></span>
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