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<hr><h1>bsp_tree.h</h1><a href="bsp__tree_8h.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 
00027 <font class="preprocessor">#ifndef NL_BSP_TREE_H</font>
00028 <font class="preprocessor"></font><font class="preprocessor">#define NL_BSP_TREE_H</font>
00029 <font class="preprocessor"></font>
00030 <font class="preprocessor">#include "<a class="code" href="debug_8h.html">nel/misc/debug.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="vector_8h.html">nel/misc/vector.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="plane_8h.html">nel/misc/plane.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="matrix_8h.html">nel/misc/matrix.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="triangle_8h.html">nel/misc/triangle.h</a>"</font>
00035 <font class="preprocessor">#include &lt;list&gt;</font>
00036 <font class="preprocessor">#include &lt;vector&gt;</font>
00037 
00038 
00039 <font class="keyword">namespace       </font>NL3D
00040 {
00041 
00042 
00043 
<a name="l00051"></a><a class="code" href="classNL3D_1_1CBSPTree.html">00051</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       <font class="keyword">class   </font>CBSPTree
00052 {
00053 
00054 <font class="keyword">public</font>:
00055 
00057         <a class="code" href="classNL3D_1_1CBSPTree.html#a0">CBSPTree</a>();
00058 
00060         <a class="code" href="classNL3D_1_1CBSPTree.html#a1">~CBSPTree</a>();
00061 
00062 <font class="keyword">public</font>:
00063 
00064         <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree.html#a2">insert</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &amp;tri, T &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a> );
00065         sint32 <a class="code" href="classNL3D_1_1CBSPTree.html#a3">select</a>( CVector &amp;v1, CVector &amp;v2 );
00066         T <a class="code" href="classNL3D_1_1CBSPTree.html#a4">getSelection</a>( sint32 i );
00067         sint32 <a class="code" href="classNL3D_1_1CBSPTree.html#a5">getNbNode</a>();
00068 
00069 <font class="keyword">private</font>:
00070 
00071         <font class="keyword">class </font>CBSPNode;
<a name="l00072"></a><a class="code" href="classNL3D_1_1CBSPTree.html#o0">00072</a>         std::vector&lt;CBSPNode*&gt; <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>;
00073 
00074 <font class="keyword">private</font>:
00075         
<a name="l00076"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html">00076</a>         <font class="keyword">class </font>CBSPNode
00077         {
<a name="l00078"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o1">00078</a>                 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o0">pBack</a>, *<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o1">pFront</a>;
<a name="l00079"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">00079</a>                 CPlane <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>;
00080 
00081         <font class="keyword">public</font>:
00082 
<a name="l00083"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">00083</a>                 T <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">Value</a>;
00084 
00085         <font class="keyword">public</font>:
00086 
<a name="l00087"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">00087</a>                 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &amp;tri, T &amp;val ) : <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">Value</a>(val), pBack(NULL), pFront(NULL) 
00088                 {
00089                         <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>.make( tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m0">V0</a>, tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m1">V1</a>, tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m2">V2</a> );
00090                         <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>.normalize();
00091                 }
00092 
<a name="l00093"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a1">00093</a>                 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a1">~CBSPNode</a>()
00094                 {
00095                         <font class="keywordflow">if</font>( pBack != NULL )
00096                                 <font class="keyword">delete</font> pBack;
00097                         <font class="keywordflow">if</font>( pFront != NULL )
00098                                 <font class="keyword">delete</font> pFront;
00099                 }
00100 
<a name="l00101"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">00101</a>                 <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">insert</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &amp;tri, T &amp;val )
00102                 {
00103                         <font class="keywordtype">float</font>   f[3];
00104                         <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *pCurrent = <font class="keyword">this</font>;
00105 
00106                         <font class="keywordflow">while</font>( true )
00107                         {
00108                                 f[0] = pCurrent-&gt;p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m0">V0</a>;
00109                                 f[1] = pCurrent-&gt;p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m1">V1</a>,
00110                                 f[2] = pCurrent-&gt;p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m2">V2</a>;
00111                                 <font class="keywordflow">if</font>( fabs( f[0] ) &lt; 0.00001 ) f[0] = 0.0f;
00112                                 <font class="keywordflow">if</font>( fabs( f[1] ) &lt; 0.00001 ) f[1] = 0.0f;
00113                                 <font class="keywordflow">if</font>( fabs( f[2] ) &lt; 0.00001 ) f[2] = 0.0f;
00114                                 <font class="keywordflow">if</font>( ( f[0] &gt;= 0.0f ) &amp;&amp; ( f[1] &gt;= 0.0f ) &amp;&amp; ( f[2] &gt;= 0.0f ) )
00115                                 {       <font class="comment">// All front</font>
00116                                         <font class="keywordflow">if</font>( pCurrent-&gt;pFront == NULL )
00117                                         {
00118                                                 pCurrent-&gt;pFront = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00119                                                 <font class="keywordflow">return</font>;
00120                                         }
00121                                         <font class="keywordflow">else</font>
00122                                         {
00123                                                 pCurrent = pCurrent-&gt;pFront;
00124                                         }
00125                                 }
00126                                 <font class="keywordflow">else</font>
00127                                 <font class="keywordflow">if</font>( ( f[0] &lt;= 0.0f ) &amp;&amp; ( f[1] &lt;= 0.0f ) &amp;&amp; ( f[2] &lt;= 0.0f ) )
00128                                 {       <font class="comment">// All back</font>
00129                                         <font class="keywordflow">if</font>( pCurrent-&gt;pBack == NULL )
00130                                         {
00131                                                 pCurrent-&gt;pBack = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00132                                                 <font class="keywordflow">return</font>;
00133                                         }
00134                                         <font class="keywordflow">else</font>
00135                                         {
00136                                                 pCurrent = pCurrent-&gt;pBack;
00137                                         }
00138                                 }
00139                                 <font class="keywordflow">else</font>
00140                                 {
00141                                         <font class="keywordflow">if</font>( pCurrent-&gt;pFront == NULL )
00142                                         {
00143                                                 pCurrent-&gt;pFront = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00144                                         }
00145                                         <font class="keywordflow">else</font>
00146                                         {
00147                                                 pCurrent-&gt;pFront-&gt;insert( tri, val );
00148                                         }
00149                                         <font class="keywordflow">if</font>( pCurrent-&gt;pBack == NULL )
00150                                         {
00151                                                 pCurrent-&gt;pBack = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00152                                         }
00153                                         <font class="keywordflow">else</font>
00154                                         {
00155                                                 pCurrent-&gt;pBack-&gt;insert( tri, val );
00156                                         }
00157                                         <font class="keywordflow">return</font>;
00158                                 }
00159                         }
00160                 }
00161 
00162 
<a name="l00163"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">00163</a>                 sint32 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">getNbNode</a>()
00164                 {
00165                         sint32 nBack = 0, nFront= 0;
00166                         <font class="keywordflow">if</font>( pBack != NULL )
00167                                 nBack = pBack-&gt;getNbNode();
00168                         <font class="keywordflow">if</font>( pFront != NULL )
00169                                 nFront = pFront-&gt;getNbNode();
00170                         <font class="keywordflow">return</font> 1+nBack+nFront;
00171                 }
00172 
00173 
<a name="l00174"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">00174</a>                 <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">select</a>( std::vector&lt;CBSPNode*&gt; &amp;sel, CVector &amp;v1, CVector &amp;v2 )
00175                 {
00176                         <font class="keywordtype">float</font>   f[2];
00177                         <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *pCurrent = <font class="keyword">this</font>;
00178 
00179                         <font class="keywordflow">while</font>( true )
00180                         {
00181                                 f[0] = pCurrent-&gt;p*v1;
00182                                 f[1] = pCurrent-&gt;p*v2;
00183                                 <font class="keywordflow">if</font>( fabs( f[0] ) &lt; 0.00001 ) f[0] = 0.0;
00184                                 <font class="keywordflow">if</font>( fabs( f[1] ) &lt; 0.00001 ) f[1] = 0.0;
00185                                 <font class="keywordflow">if</font>( ( f[0] &gt;= 0.0 ) &amp;&amp; ( f[1] &gt;= 0.0 ) )
00186                                 {       <font class="comment">// All front</font>
00187                                         <font class="keywordflow">if</font>( pCurrent-&gt;pFront == NULL )
00188                                         {
00189                                                 <font class="keywordflow">return</font>;
00190                                         }
00191                                         <font class="keywordflow">else</font>
00192                                         {
00193                                                 pCurrent = pCurrent-&gt;pFront;
00194                                         }
00195                                 }
00196                                 <font class="keywordflow">else</font>
00197                                 <font class="keywordflow">if</font>( ( f[0] &lt;= 0.0 ) &amp;&amp; ( f[1] &lt;= 0.0 ) )
00198                                 {       <font class="comment">// All back</font>
00199                                         <font class="keywordflow">if</font>( pCurrent-&gt;pBack == NULL )
00200                                         {
00201                                                 <font class="keywordflow">return</font>;
00202                                         }
00203                                         <font class="keywordflow">else</font>
00204                                         {
00205                                                 pCurrent = pCurrent-&gt;pBack;
00206                                         }
00207                                 }
00208                                 <font class="keywordflow">else</font>
00209                                 {
00210                                         <font class="keywordflow">if</font>( sel.size() == sel.capacity() )
00211                                                 sel.reserve( sel.size() + 64 );
00212                                         sel.push_back( <font class="keyword">this</font> );
00213                                         <font class="keywordflow">if</font>( pCurrent-&gt;pFront == NULL )
00214                                         {
00215                                         }
00216                                         <font class="keywordflow">else</font>
00217                                         {
00218                                                 <font class="comment">//CVector newV1 = v1;</font>
00219                                                 <font class="comment">//CVector newV2 = v2;</font>
00220                                                 <font class="comment">//pCurrent-&gt;p.clipSegmentFront( newV1, newV2 );</font>
00221                                                 <font class="comment">//pCurrent-&gt;pFront-&gt;select( sel, newV1, newV2 );</font>
00222                                                 pCurrent-&gt;pFront-&gt;select( sel, v1, v2 );
00223                                         }
00224                                         <font class="keywordflow">if</font>( pCurrent-&gt;pBack == NULL )
00225                                         {
00226                                         }
00227                                         <font class="keywordflow">else</font>
00228                                         {
00229                                                 <font class="comment">//CVector newV1 = v1;</font>
00230                                                 <font class="comment">//CVector newV2 = v2;</font>
00231                                                 <font class="comment">//pCurrent-&gt;p.clipSegmentBack( newV1, newV2 );</font>
00232                                                 <font class="comment">//pCurrent-&gt;pBack-&gt;select( sel, newV1, newV2 );</font>
00233                                                 pCurrent-&gt;pBack-&gt;select( sel, v1, v2 );                                         
00234                                         }
00235                                         <font class="keywordflow">return</font>;
00236                                 }
00237                         }
00238                 }
00239         };
00240 
00241 <font class="keyword">private</font>:
00242 
<a name="l00243"></a><a class="code" href="classNL3D_1_1CBSPTree.html#o1">00243</a>         CBSPNode *<a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>;
00244 
00245 };
00246 
00247 <font class="comment">// ============================================================================================</font>
00248 <font class="comment">// ============================================================================================</font>
00249 <font class="comment">// Template CBSPTree implementation. Construction/Destruction.</font>
00250 <font class="comment">// ============================================================================================</font>
00251 <font class="comment">// ============================================================================================</font>
00252 
<a name="l00253"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a0">00253</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; CBSPTree&lt;T&gt;::CBSPTree() : _Root(NULL)
00254 {
00255         <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.reserve( 64 );
00256 }
00257 
<a name="l00258"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a1">00258</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; CBSPTree&lt;T&gt;::~CBSPTree()
00259 {
00260         <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> != NULL )
00261                 <font class="keyword">delete</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>;
00262 }
00263 
00264 <font class="comment">// ============================================================================================</font>
00265 <font class="comment">// ============================================================================================</font>
00266 <font class="comment">// Template CBSPTree implementation.</font>
00267 <font class="comment">// ============================================================================================</font>
00268 <font class="comment">// ============================================================================================</font>
00269 
<a name="l00270"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a2">00270</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; <font class="keywordtype">void</font> CBSPTree&lt;T&gt;::insert( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &amp;tri, T &amp;val )
00271 {
00272         <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> == NULL )
00273                 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> = <font class="keyword">new</font> CBSPNode( tri, val );
00274         <font class="keywordflow">else</font>
00275                 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-&gt;<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">insert</a>( tri, val );
00276 }
00277 
<a name="l00278"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a3">00278</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; sint32 CBSPTree&lt;T&gt;::select( CVector &amp;v1, CVector &amp;v2 )
00279 {
00280         <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.clear();
00281         <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> != NULL )
00282         {
00283                 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-&gt;<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">select</a>( <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>, v1, v2 );
00284                 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.size();
00285         }
00286         <font class="keywordflow">else</font> 
00287                 <font class="keywordflow">return</font> 0;
00288 }
00289 
<a name="l00290"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a4">00290</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; T CBSPTree&lt;T&gt;::getSelection( sint32 i )
00291 {
00292         <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>[i]-&gt;Value;
00293 }
00294 
<a name="l00295"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a5">00295</a> <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt; sint32 CBSPTree&lt;T&gt;::getNbNode()
00296 {
00297         <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-&gt;<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">getNbNode</a>();
00298 }
00299 
00300 }
00301 
00302 <font class="preprocessor">#endif // NL_BSP_TREE_H</font>
</pre></div>

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