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<hr><h1>aabbox.cpp</h1><a href="aabbox_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025 
00026 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
00027 
00028 <font class="preprocessor">#include "<a class="code" href="aabbox_8h.html">nel/misc/aabbox.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="polygon_8h.html">nel/misc/polygon.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="bsphere_8h.html">nel/misc/bsphere.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="matrix_8h.html">nel/misc/matrix.h</a>"</font>
00032 
00033 
00034 
00035 <font class="keyword">namespace </font>NLMISC {
00036 
00037 
00038 <font class="comment">// ***************************************************************************</font>
<a name="l00039"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_0">00039</a> <font class="keywordtype">bool</font>    CAABBox::clipFront(<font class="keyword">const</font> CPlane &amp;p)<font class="keyword"> const</font>
00040 <font class="keyword"></font>{
00041         CVector         hswap;
00042 
00043         <font class="comment">// The bbox is front of the plane if only one of his vertex is in front.</font>
00044         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>) &gt; 0)   <font class="keywordflow">return</font> <font class="keyword">true</font>;
00045         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>) &gt; 0)   <font class="keywordflow">return</font> <font class="keyword">true</font>;
00046         hswap.set(-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00047         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00048         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00049         hswap.set(<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, -<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00050         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00051         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00052         hswap.set(<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, -<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00053         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00054         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &gt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00055 
00056         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00057 }
00058 <font class="comment">// ***************************************************************************</font>
<a name="l00059"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_1">00059</a> <font class="keywordtype">bool</font>    CAABBox::clipBack(<font class="keyword">const</font> CPlane &amp;p)<font class="keyword"> const</font>
00060 <font class="keyword"></font>{
00061         CVector         hswap;
00062 
00063         <font class="comment">// The bbox is back of the plane if only one of his vertex is in back.</font>
00064         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>) &lt; 0)   <font class="keywordflow">return</font> <font class="keyword">true</font>;
00065         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>) &lt; 0)   <font class="keywordflow">return</font> <font class="keyword">true</font>;
00066         hswap.set(-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00067         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00068         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00069         hswap.set(<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, -<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00070         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00071         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00072         hswap.set(<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x, <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y, -<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z);
00073         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> + hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00074         <font class="keywordflow">if</font>(p*(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a> - hswap) &lt; 0)      <font class="keywordflow">return</font> <font class="keyword">true</font>;
00075 
00076         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00077 }
00078 
00079 
00080 <font class="comment">// ***************************************************************************</font>
<a name="l00081"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_2">00081</a> <font class="keywordtype">bool</font>                    CAABBox::include(<font class="keyword">const</font> CVector &amp;a)<font class="keyword"> const</font>
00082 <font class="keyword"></font>{
00083         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x&lt;a.x)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00084         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x&gt;a.x)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00085         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y&lt;a.y)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00086         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y&gt;a.y)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00087         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z&lt;a.z)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00088         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z&gt;a.z)     <font class="keywordflow">return</font> <font class="keyword">false</font>;
00089         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00090 }
00091 
00092 
00093 <font class="comment">// ***************************************************************************</font>
<a name="l00094"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_3">00094</a> <font class="keywordtype">bool</font>                    CAABBox::include(<font class="keyword">const</font> CAABBox &amp;box)<font class="keyword"> const</font>
00095 <font class="keyword"></font>{
00096         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x &lt; box.Center.x+box.HalfSize.x)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00097         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x &gt; box.Center.x-box.HalfSize.x)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00098         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y &lt; box.Center.y+box.HalfSize.y)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00099         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y &gt; box.Center.y-box.HalfSize.y)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00100         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z &lt; box.Center.z+box.HalfSize.z)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00101         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z &gt; box.Center.z-box.HalfSize.z)   <font class="keywordflow">return</font> <font class="keyword">false</font>;
00102         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00103 }
00104 
00105 
00106 <font class="comment">// ***************************************************************************</font>
<a name="l00107"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_4">00107</a> <font class="keywordtype">bool</font>                    CAABBox::intersect(<font class="keyword">const</font> CAABBox &amp;box)<font class="keyword"> const</font>
00108 <font class="keyword"></font>{
00109         CVector mina = <a class="code" href="classNLMISC_1_1CAABBox.html#z264_0">getMin</a>(), maxa = <a class="code" href="classNLMISC_1_1CAABBox.html#z264_1">getMax</a>(),
00110                         minb = box.getMin(), maxb = box.getMax();
00111 
00112         <font class="keywordflow">return</font> ! ( mina.x &gt; maxb.x ||
00113                            mina.y &gt; maxb.y ||
00114                            mina.z &gt; maxb.z ||
00115                            minb.x &gt; maxa.x ||
00116                            minb.y &gt; maxa.y ||
00117                            minb.z &gt; maxa.z);
00118 }
00119 
00120 <font class="comment">// ***************************************************************************</font>
<a name="l00121"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_5">00121</a> <font class="keywordtype">bool</font>                    CAABBox::intersect(<font class="keyword">const</font> CVector &amp;a, <font class="keyword">const</font> CVector &amp;b, <font class="keyword">const</font> CVector &amp;c)<font class="keyword"> const</font>
00122 <font class="keyword"></font>{
00123         <font class="comment">// Trivial test.</font>
00124         <font class="keywordflow">if</font>(<a class="code" href="classNLMISC_1_1CAABBox.html#z265_2">include</a>(a) || <a class="code" href="classNLMISC_1_1CAABBox.html#z265_2">include</a>(b) || <a class="code" href="classNLMISC_1_1CAABBox.html#z265_2">include</a>(c))
00125                 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00126         <font class="comment">// Else, must test if the polygon intersect the pyamid.</font>
00127         CPlane          planes[6];
00128         <a class="code" href="classNLMISC_1_1CAABBox.html#z266_0">makePyramid</a>(planes);
00129         CPolygon        poly(a,b,c);
00130         poly.clip(planes, 6);
00131         <font class="keywordflow">if</font>(poly.getNumVertices()==0)
00132                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00133         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00134 }
00135 
00136 <font class="comment">// ***************************************************************************</font>
<a name="l00137"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z265_6">00137</a> <font class="keywordtype">bool</font>                    CAABBox::intersect(<font class="keyword">const</font> CBSphere &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>)<font class="keyword"> const</font>
00138 <font class="keyword"></font>{
00139         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x + <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x &lt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.x - <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00140         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y + <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y &lt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.y - <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00141         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z + <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z &lt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.z - <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00142 
00143         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.x - <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.x &gt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.x + <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00144         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.y - <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.y &gt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.y + <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00145         <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>.z - <a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>.z &gt; <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Center.z + <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.Radius) <font class="keywordflow">return</font> <font class="keyword">false</font>; 
00146 
00147         <font class="keywordflow">return</font> <font class="keyword">true</font>;
00148 }
00149 
00150 
00151 
00152 <font class="comment">// ***************************************************************************</font>
<a name="l00153"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z266_0">00153</a> <font class="keywordtype">void</font>                    CAABBox::makePyramid(CPlane     planes[6])<font class="keyword"> const</font>
00154 <font class="keyword"></font>{
00155         planes[0].make(CVector(-1,0,0), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00156         planes[1].make(CVector(+1,0,0), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00157         planes[2].make(CVector(0,-1,0), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00158         planes[3].make(CVector(0,+1,0), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00159         planes[4].make(CVector(0,0,-1), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>-<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00160         planes[5].make(CVector(0,0,+1), <a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>+<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00161 }
00162 
00163 
00164 <font class="comment">// ***************************************************************************</font>
<a name="l00165"></a><a class="code" href="classNLMISC_1_1CAABBox.html#a1">00165</a> <font class="keywordtype">void</font>                    CAABBox::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &amp;f)
00166 {
00167         (void)f.<a class="code" href="classNLMISC_1_1IStream.html#a29">serialVersion</a>(0);
00168         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>);
00169         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNLMISC_1_1CAABBox.html#n1">HalfSize</a>);
00170 }
00171 
00172 
00173 <font class="comment">// ***************************************************************************</font>
<a name="l00174"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z263_4">00174</a> <font class="keywordtype">void</font>    CAABBox::extend(<font class="keyword">const</font> CVector &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>)
00175 {
00176         CVector         bmin= <a class="code" href="classNLMISC_1_1CAABBox.html#z264_0">getMin</a>(), bmax= <a class="code" href="classNLMISC_1_1CAABBox.html#z264_1">getMax</a>();
00177 
00178         bmin.minof(bmin, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>);
00179         bmax.maxof(bmax, <a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>);
00180         <a class="code" href="classNLMISC_1_1CAABBox.html#z263_3">setMinMax</a>(bmin, bmax);
00181 }
00182 
00183 
00184 <font class="comment">//==========================================================================</font>
<a name="l00190"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z266_2">00190</a> <font class="comment"></font>CAABBox CAABBox::computeAABBoxUnion(<font class="keyword">const</font> CAABBox &amp;b1, <font class="keyword">const</font> CAABBox &amp;b2)
00191 {       
00192         <a class="code" href="classNLMISC_1_1CAABBox.html#a0">CAABBox</a> result;
00193         CVector <a class="code" href="bit__set_8cpp.html#a0">min</a>, max;
00194         CVector min1 = b1.getMin() 
00195                     ,max1 = b1.getMax() 
00196                         ,min2 = b2.getMin() 
00197                     ,max2 = b2.getMax();
00198         max.maxof(max1, max2);
00199         <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(min1, min2);
00200         result.setMinMax(<a class="code" href="bit__set_8cpp.html#a0">min</a>, max);
00201         <font class="keywordflow">return</font> result;
00202 }
00203 
00204 
00205 <font class="comment">//==========================================================================</font>
<a name="l00206"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z266_1">00206</a> <font class="keywordtype">void</font>    CAABBox::computeIntersection(<font class="keyword">const</font> CAABBox &amp;b1, <font class="keyword">const</font> CAABBox &amp;b2)
00207 {
00208         CVector min1 = b1.getMin(), max1 = b1.getMax(),
00209                         min2 = b2.getMin(), max2 = b2.getMax();
00210         CVector minr, maxr;
00211 
00212         <font class="comment">// don't test if intersect or not.</font>
00213         maxr.minof(max1, max2);
00214         minr.maxof(min1, min2);
00215 
00216         <a class="code" href="classNLMISC_1_1CAABBox.html#z263_3">setMinMax</a>(minr, maxr);
00217 }
00218 
00219 
00220 <font class="comment">//==========================================================================</font>
<a name="l00221"></a><a class="code" href="classNLMISC_1_1CAABBox.html#z266_3">00221</a> CAABBox CAABBox::transformAABBox(<font class="keyword">const</font> CMatrix &amp;mat, <font class="keyword">const</font> CAABBox &amp;box)
00222 {
00223         <font class="comment">// TODO : optimize this a bit if possible...</font>
00224         <a class="code" href="classNLMISC_1_1CAABBox.html#a0">CAABBox</a> result; 
00225 
00226         <font class="keyword">const</font> CVector &amp;m = mat * box.getCenter();
00227         <font class="keyword">const</font> CVector &amp;h = mat.mulVector(box.getHalfSize());
00228         CVector tmp, <a class="code" href="bit__set_8cpp.html#a0">min</a>, max;
00229         <a class="code" href="bit__set_8cpp.html#a0">min</a> = max = m;
00230         tmp = m + CVector(h.x, h.y, -h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00231         tmp = m + CVector(h.x, -h.y, h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00232         tmp = m + CVector(h.x, -h.y, -h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00233         tmp = m + CVector(-h.x, h.y, h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00234         tmp = m + CVector(-h.x, h.y, -h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00235         tmp = m + CVector(-h.x, -h.y, h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00236         tmp = m + CVector(-h.x, -h.y, -h.z); <a class="code" href="bit__set_8cpp.html#a0">min</a>.minof(<a class="code" href="bit__set_8cpp.html#a0">min</a>, tmp); max.maxof(max, tmp);
00237 
00238         result.setMinMax(<a class="code" href="bit__set_8cpp.html#a0">min</a>, max);
00239         
00240         <font class="keywordflow">return</font> result;  
00241 }
00242 
00243 
00244 
00245 <font class="comment">// ***************************************************************************</font>
<a name="l00246"></a><a class="code" href="classNLMISC_1_1CAABBoxExt.html#z269_0">00246</a> <font class="keywordtype">bool</font>    CAABBoxExt::clipFront(<font class="keyword">const</font> CPlane &amp;p)<font class="keyword"> const</font>
00247 <font class="keyword"></font>{
00248         <font class="comment">// Assume normalized planes.</font>
00249 
00250         <font class="comment">// if( SpherMax OUT )   return false.</font>
00251         <font class="keywordtype">float</font>   d= p*<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>;
00252         <font class="keywordflow">if</font>(d&lt;-<a class="code" href="classNLMISC_1_1CAABBoxExt.html#n1">RadiusMax</a>)
00253                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00254         <font class="comment">// if( SphereMin IN )   return true;</font>
00255         <font class="keywordflow">if</font>(d&gt;-<a class="code" href="classNLMISC_1_1CAABBoxExt.html#n0">RadiusMin</a>)
00256                 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00257 
00258         <font class="comment">// else, standard clip box.</font>
00259         <font class="keywordflow">return</font> CAABBox::clipFront(p);
00260 }
00261 
00262 
00263 <font class="comment">// ***************************************************************************</font>
<a name="l00264"></a><a class="code" href="classNLMISC_1_1CAABBoxExt.html#z269_1">00264</a> <font class="keywordtype">bool</font>    CAABBoxExt::clipBack(<font class="keyword">const</font> CPlane &amp;p)<font class="keyword"> const</font>
00265 <font class="keyword"></font>{
00266         <font class="comment">// Assume normalized planes.</font>
00267 
00268         <font class="comment">// if( SpherMax OUT )   return false.</font>
00269         <font class="keywordtype">float</font>   d= p*<a class="code" href="classNLMISC_1_1CAABBox.html#n0">Center</a>;
00270         <font class="keywordflow">if</font>(d&gt;<a class="code" href="classNLMISC_1_1CAABBoxExt.html#n1">RadiusMax</a>)
00271                 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00272         <font class="comment">// if( SphereMin IN )   return true;</font>
00273         <font class="keywordflow">if</font>(d&lt;<a class="code" href="classNLMISC_1_1CAABBoxExt.html#n0">RadiusMin</a>)
00274                 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00275 
00276         <font class="comment">// else, standard clip box.</font>
00277         <font class="keywordflow">return</font> CAABBox::clipBack(p);
00278 }
00279 
00280 
00281 <font class="comment">// ***************************************************************************</font>
<a name="l00282"></a><a class="code" href="classNLMISC_1_1CAABBoxExt.html#a2">00282</a> <font class="keywordtype">void</font>                    CAABBoxExt::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &amp;f)
00283 {
00284         CAABBox::serial(f);
00285         <font class="keywordflow">if</font>(f.<a class="code" href="classNLMISC_1_1IStream.html#a4">isReading</a>())
00286                 <a class="code" href="classNLMISC_1_1CAABBoxExt.html#b0">updateRadius</a>();
00287 }
00288 
00289 
00290 } <font class="comment">// NLMISC</font>
</pre></div>

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