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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><<font class="keyword">class</font> T>
<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<T> &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> &point, uint &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<T> <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<CQuadNode> <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 &x0, sint &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&= <a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o2">_Size</a>-1;
00121 y0&= <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><<font class="keyword">class</font> T>
<a name="l00146"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a0">00146</a> CStaticQuadGrid<T>::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<<<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><<font class="keyword">class</font> T>
<a name="l00156"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#a1">00156</a> CStaticQuadGrid<T>::~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><<font class="keyword">class</font> T>
<a name="l00164"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_1">00164</a> <font class="keywordtype">void</font> CStaticQuadGrid<T>::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<<<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><<font class="keyword">class</font> T>
<a name="l00181"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z816_0">00181</a> <font class="keywordtype">void</font> CStaticQuadGrid<T>::build(CQuadGrid<T> &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><<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><<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<T>::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><<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><<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 < <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= &<a class="code" href="classNL3D_1_1CStaticQuadGrid.html#o0">_Elements</a>[curDupElt];
00247
00248 <font class="comment">// For all elements.</font>
00249 CQuadGrid<T>::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><<font class="keyword">class</font> T>
<a name="l00269"></a><a class="code" href="classNL3D_1_1CStaticQuadGrid.html#z817_0">00269</a> <font class="keyword">const</font> T *CStaticQuadGrid<T>::select(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pointIn, uint &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 &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>
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