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<hr><h1>static_quad_grid.h</h1><a href="static__quad__grid_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2000-2002 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">#ifndef NL_STATIC_QUAD_GRID_H</font>
00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_STATIC_QUAD_GRID_H</font>
00028 <font class="preprocessor"></font>
00029 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="3d_2quad__grid_8h.html">3d/quad_grid.h</a>"</font>
00031 
00032 
00033 <font class="keyword">namespace </font>NL3D 
00034 {
00035 
00036 
00037 <font class="comment">// ***************************************************************************</font>
00050 <font class="comment"></font><font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;
<a name="l00051"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html">00051</a> <font class="keyword">class </font>CStaticQuadGrid
00052 {
00053 <font class="keyword">public</font>:
00054 
00056         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a0">CStaticQuadGrid</a>();
00058         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a1">~CStaticQuadGrid</a>();
00059 
00060 
00062 
00063 
00067         <font class="keywordtype">void</font>                    <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_0">build</a>(CQuadGrid&lt;T&gt; &amp;quadGrid);
00068 
00071         <font class="keywordtype">void</font>                    <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_1">clear</a>();
00072 
00074 
00075 
00077 
00078 
00085         <font class="keyword">const</font> T                 *<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z817_0">select</a>(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &amp;point, uint &amp;numElts);
00087 
00088 
00089 <font class="comment">// ****************************</font>
00090 <font class="keyword">private</font>:
<a name="l00091"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html">00091</a>         <font class="keyword">class   </font>CQuadNode
00092         {
00093         <font class="keyword">public</font>:
<a name="l00094"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m0">00094</a>                 T                               *<a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m0">Nodes</a>;
<a name="l00095"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m1">00095</a>                 uint                    <a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m1">NumNodes</a>;
00096 
<a name="l00097"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#a0">00097</a>                 <a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#a0">CQuadNode</a>() 
00098                 {
00099                         <a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m0">Nodes</a>= NULL; <a class="code" href="classNL3D_1_1CStaticQuadGrid_1_1CQuadNode.html#m1">NumNodes</a>=0; 
00100                 }
00101         };
00102 
00103 <font class="keyword">private</font>:<font class="comment">// Atttributes.</font>
00104         <font class="comment">// The big continous array of list of elements.</font>
<a name="l00105"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">00105</a>         std::vector&lt;T&gt;                  <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>;
<a name="l00106"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">00106</a>         std::vector&lt;CQuadNode&gt;  <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>;
<a name="l00107"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">00107</a>         sint                            <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>;
<a name="l00108"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">00108</a>         sint                            <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>;
<a name="l00109"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">00109</a>         <font class="keywordtype">float</font>                           <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
<a name="l00110"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">00110</a>         <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a>         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a>;
00111 
00112 
00113         <font class="comment">// return the coordinates on the grid of what include the bbox.</font>
<a name="l00114"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#c0">00114</a>         <font class="keywordtype">void</font>            <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#c0">selectPoint</a>(CVector point, sint &amp;x0, sint &amp;y0)
00115         {
00116                 point/= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
00117                 x0= (sint)(floor(point.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>));
00118                 y0= (sint)(floor(point.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>));
00119 
00120                 x0&amp;= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>-1;
00121                 y0&amp;= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>-1;
00122         }
00123 
00124 
00125 };
00126 
00127 
00128 <font class="comment">// ***************************************************************************</font>
00129 <font class="comment">// ***************************************************************************</font>
00130 <font class="comment">// ***************************************************************************</font>
00131 <font class="comment">// ***************************************************************************</font>
00132 <font class="comment">// Template CStaticQuadGrid implementation.</font>
00133 <font class="comment">// ***************************************************************************</font>
00134 <font class="comment">// ***************************************************************************</font>
00135 <font class="comment">// ***************************************************************************</font>
00136 <font class="comment">// ***************************************************************************</font>
00137 
00138 
00139 <font class="comment">// ***************************************************************************</font>
00140 <font class="comment">// Init.</font>
00141 <font class="comment">// ***************************************************************************</font>
00142 
00143 
00144 <font class="comment">// ***************************************************************************</font>
00145 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       
<a name="l00146"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a0">00146</a> CStaticQuadGrid&lt;T&gt;::CStaticQuadGrid()
00147 {
00148         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>=4;
00149         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>=1&lt;&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>;
00150         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>=1;
00151         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a>.<a class="code" href="classNLMISC_1_1CMatrix.html#z290_0">identity</a>();
00152         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>.resize(<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> * <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>);
00153 }
00154 <font class="comment">// ***************************************************************************</font>
00155 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       
<a name="l00156"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a1">00156</a> CStaticQuadGrid&lt;T&gt;::~CStaticQuadGrid()
00157 {
00158         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_1">clear</a>();
00159 }
00160 
00161 
00162 <font class="comment">// ***************************************************************************</font>
00163 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       
<a name="l00164"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_1">00164</a> <font class="keywordtype">void</font>                    CStaticQuadGrid&lt;T&gt;::clear()
00165 {
00166         <font class="comment">// Just clear all vectors</font>
00167         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>.clear();
00168         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>.clear();
00169 
00170         <font class="comment">// reset</font>
00171         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>=4;
00172         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>=1&lt;&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>;
00173         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>=1;
00174         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a>.<a class="code" href="classNLMISC_1_1CMatrix.html#z290_0">identity</a>();
00175         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>.resize(<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> * <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>);
00176 }
00177 
00178 
00179 <font class="comment">// ***************************************************************************</font>
00180 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       
<a name="l00181"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_0">00181</a> <font class="keywordtype">void</font>                    CStaticQuadGrid&lt;T&gt;::build(CQuadGrid&lt;T&gt; &amp;quadGrid)
00182 {
00183         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_1">clear</a>();
00184         <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>);
00185 
00186         <font class="comment">// Copy from quadGrid, and init quads</font>
00187         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>= quadGrid.getSize();
00188         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o3">_SizePower</a>= <a class="code" href="namespaceNLMISC.html#a224">getPowerOf2</a>(<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>);
00189         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>= quadGrid.getEltSize();
00190         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a>= quadGrid.getBasis();
00191         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>.resize(<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> * <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>);
00192 
00193         <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a>         invBasis= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a>.<a class="code" href="classNLMISC_1_1CMatrix.html#z293_7">inverted</a>();
00194 
00195         <font class="comment">// Count number of elements per cell, and total copies of elements</font>
00196         uint    totalDupElt= 0;
00197         sint    <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>,<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>;
00198         <font class="keywordflow">for</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>=0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>++)
00199         {
00200                 <font class="keywordflow">for</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>=0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>++)
00201                 {
00202                         <font class="comment">// Select the center of the case</font>
00203                         CVector pos;
00204                         pos.x= (<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>+0.5f)*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
00205                         pos.y= (<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>+0.5f)*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
00206                         pos.z= 0.f;
00207                         <font class="comment">// mul by invBasis</font>
00208                         pos= invBasis * pos;
00209                         quadGrid.select(pos, pos);
00210 
00211                         <font class="comment">// Count elements.</font>
00212                         uint    n= 0;
00213                         CQuadGrid&lt;T&gt;::CIterator it;
00214                         <font class="keywordflow">for</font>(it= quadGrid.begin(); it!=quadGrid.end(); it++)
00215                         {
00216                                 n++;
00217                         }
00218 
00219                         <font class="comment">// store.</font>
00220                         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> + <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>].NumNodes= n;
00221                         totalDupElt+= n;
00222                 }
00223         }
00224 
00225         <font class="comment">// Resize array copy.</font>
00226         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>.resize(totalDupElt);
00227 
00228 
00229         <font class="comment">// Then reparse all array, filling _Elements and setup quadNodes ptr.</font>
00230         uint    curDupElt= 0;
00231         <font class="keywordflow">for</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>=0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>++)
00232         {
00233                 <font class="keywordflow">for</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>=0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>&lt;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>++)
00234                 {
00235                         <font class="comment">// Select the center of the case</font>
00236                         CVector pos;
00237                         pos.x= (<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>+0.5f)*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
00238                         pos.y= (<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>+0.5f)*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o4">_EltSize</a>;
00239                         pos.z= 0.f;
00240                         <font class="comment">// mul by invBasis</font>
00241                         pos= invBasis * pos;
00242                         quadGrid.select(pos, pos);
00243 
00244                         <font class="comment">// Setup quadNode ptr.</font>
00245                         <font class="keywordflow">if</font> (curDupElt &lt; <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>.size())
00246                                 <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> + <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>].Nodes= &amp;<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>[curDupElt];
00247 
00248                         <font class="comment">// For all elements.</font>
00249                         CQuadGrid&lt;T&gt;::CIterator it;
00250                         <font class="keywordflow">for</font>(it= quadGrid.begin(); it!=quadGrid.end(); it++)
00251                         {
00252                                 <font class="comment">// Copy elt in array.</font>
00253                                 <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>[curDupElt]= *it;
00254 
00255                                 <font class="comment">// Next elt in array.</font>
00256                                 curDupElt++;
00257                         }
00258                 }
00259         }
00260 
00261 
00262         <font class="comment">// clean up.</font>
00263         quadGrid.clearSelection();
00264 }
00265 
00266 
00267 <font class="comment">// ***************************************************************************</font>
00268 <font class="keyword">template</font>&lt;<font class="keyword">class</font> T&gt;       
<a name="l00269"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z817_0">00269</a> <font class="keyword">const</font> T                 *CStaticQuadGrid&lt;T&gt;::select(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &amp;pointIn, uint &amp;numElts)
00270 {
00271         CVector         point= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o5">_ChangeBasis</a> * pointIn;
00272 
00273         <font class="comment">// Select the case.</font>
00274         sint    <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>;
00275         <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#c0">selectPoint</a>(point, <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>);
00276 
00277         <font class="comment">// get ref on the selection</font>
00278         CQuadNode       &amp;quadNode= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o1">_Grid</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a> + <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>];
00279         numElts= quadNode.NumNodes;
00280 
00281         <font class="keywordflow">return</font> quadNode.Nodes;
00282 }
00283 
00284 
00285 } <font class="comment">// NL3D</font>
00286 
00287 
00288 <font class="preprocessor">#endif // NL_STATIC_QUAD_GRID_H</font>
00289 <font class="preprocessor"></font>
00290 <font class="comment">/* End of static_quad_grid.h */</font>
</pre></div>

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