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<hr><h1>vegetable_sort_block.cpp</h1><a href="vegetable__sort__block_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2001 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="std3d_8h.html">std3d.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="vegetable__sort__block_8h.html">3d/vegetable_sort_block.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="radix__sort_8h.html">3d/radix_sort.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font>
00031
00032
00033 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00034 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00035
00036 <font class="keyword">namespace </font>NL3D
00037 {
00038
00039
00040 <font class="comment">// sort triangles with 2 mm of precision. It leaves 64 m with an uint16, which is really sufficient :)</font>
<a name="l00041"></a><a class="code" href="vegetable__sort__block_8cpp.html#a0">00041</a> <font class="preprocessor">#define NL3D_VEGETABLE_TRI_RADIX_KEY_PRECISION 512</font>
00042 <font class="preprocessor"></font>
00043
00044 <font class="comment">// ***************************************************************************</font>
<a name="l00045"></a><a class="code" href="classNL3D_1_1CVegetableSortBlock.html#a0">00045</a> CVegetableSortBlock::CVegetableSortBlock()
00046 {
00047 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o4">ZSortHardMode</a>= <font class="keyword">true</font>;
00048 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>= 0;
00049 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_7">_NIndices</a>= 0;
00050 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o1">_Dirty</a>= <font class="keyword">false</font>;
00051 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o2">_UnderWater</a>= <font class="keyword">false</font>;
00052 }
00053
00054
00055 <font class="comment">// ***************************************************************************</font>
00056 <font class="comment">// the struct to sort a triangle.</font>
<a name="l00057"></a><a class="code" href="structNL3D_1_1CSortTri.html">00057</a> <font class="keyword">struct </font>CSortTri
00058 {
00059 <font class="comment">// index of the triangle.</font>
<a name="l00060"></a><a class="code" href="structNL3D_1_1CSortTri.html#m0">00060</a> <a class="code" href="types__nl_8h.html#a7">uint16</a> <a class="code" href="structNL3D_1_1CSortTri.html#m0">TriIndex</a>;
00061
00062 <font class="comment">// QSort only.</font>
00063 <font class="comment">// distance.</font>
<a name="l00064"></a><a class="code" href="structNL3D_1_1CSortTri.html#m1">00064</a> <font class="keywordtype">float</font> <a class="code" href="structNL3D_1_1CSortTri.html#m1">Dist</a>;
<a name="l00065"></a><a class="code" href="structNL3D_1_1CSortTri.html#a0">00065</a> <font class="keywordtype">bool</font> <a class="code" href="structNL3D_1_1CSortTri.html#a0">operator<</a>(<font class="keyword">const</font> CSortTri &o)<font class="keyword"> const</font>
00066 <font class="keyword"> </font>{
00067 <font class="keywordflow">return</font> <a class="code" href="structNL3D_1_1CSortTri.html#m1">Dist</a>>o.Dist;
00068 }
00069 };
00070
00071
00072 <font class="comment">// ***************************************************************************</font>
<a name="l00073"></a><a class="code" href="classNL3D_1_1CVegetableSortBlock.html#a2">00073</a> <font class="keywordtype">void</font> CVegetableSortBlock::updateSortBlock(CVegetableManager &vegetManager)
00074 {
00075 <font class="comment">// if nothing to update (ie instance added/deleted do not impact me).</font>
00076 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o1">_Dirty</a>)
00077 {
00078 <font class="comment">// nothing to do.</font>
00079 <font class="keywordflow">return</font>;
00080 }
00081 <font class="keywordflow">else</font>
00082 {
00083 <font class="comment">// Ok clean me now.</font>
00084 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o1">_Dirty</a>= <font class="keyword">false</font>;
00085 }
00086
00087
00088 <font class="comment">// compute number of triangles.</font>
00089 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>= 0;
00090 CVegetableInstanceGroup *ptrIg= <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o3">_InstanceGroupList</a>.begin();
00091 <font class="keywordflow">while</font>(ptrIg)
00092 {
00093 <font class="comment">// add only zsort rdrPass triangles.</font>
00094 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>+= ptrIg->_RdrPass[<a class="code" href="vegetable__def_8h.html#a5">NL3D_VEGETABLE_RDRPASS_UNLIT_2SIDED_ZSORT</a>].NTriangles;
00095
00096 <font class="comment">// next Ig in the SortBlock</font>
00097 ptrIg= (CVegetableInstanceGroup*)(ptrIg->Next);
00098 }
00099 <font class="comment">// compute number of indices</font>
00100 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_7">_NIndices</a>= <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>*3;
00101
00102
00103 <font class="comment">// if no triangles, clear and go</font>
00104 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a> == 0)
00105 {
00106 <font class="comment">// reset the array of indices.</font>
00107 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_4">_SortedTriangleArray</a>.<a class="code" href="classNLMISC_1_1CObjectVector.html#z290_0">clear</a>();
00108 <font class="comment">// bye</font>
00109 <font class="keywordflow">return</font>;
00110 }
00111 <font class="keywordflow">else</font>
00112 {
00113 <font class="comment">// else, re-allocate the array</font>
00114 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_4">_SortedTriangleArray</a>.<a class="code" href="classNLMISC_1_1CObjectVector.html#z290_1">resize</a>(<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_7">_NIndices</a> * <a class="code" href="vegetable__def_8h.html#a10">NL3D_VEGETABLE_NUM_QUADRANT</a>);
00115 }
00116
00117
00118 <font class="comment">// resize an array for sorting.</font>
00119 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a> < 65536);
00120 <font class="keyword">static</font> std::vector<CSortTri> triSort;
00121 <font class="keyword">static</font> std::vector<uint32> triIndices;
00122 triSort.clear();
00123 triSort.resize(<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>);
00124 triIndices.resize(<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_7">_NIndices</a>);
00125
00126
00127 <font class="comment">// for all quadrants</font>
00128 <font class="keywordflow">for</font>(<a class="code" href="types__nl_8h.html#a13">uint</a> quadrant=0; quadrant<<a class="code" href="vegetable__def_8h.html#a10">NL3D_VEGETABLE_NUM_QUADRANT</a>; quadrant++)
00129 {
00130 <font class="comment">// fill triSort with all ig info.</font>
00131 <font class="comment">//-------------</font>
00132 CSortTri *triPtr= &triSort[0];
00133 <a class="code" href="types__nl_8h.html#a9">uint32</a> *triIdxPtr= &triIndices[0];
00134 <a class="code" href="types__nl_8h.html#a13">uint</a> triId= 0;
00135 <font class="comment">// for all igs in the sortBlock.</font>
00136 ptrIg= <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#o3">_InstanceGroupList</a>.begin();
00137 <font class="keywordflow">while</font>(ptrIg)
00138 {
00139 CVegetableInstanceGroup::CVegetableRdrPass &vegetRdrPass= ptrIg->_RdrPass[<a class="code" href="vegetable__def_8h.html#a5">NL3D_VEGETABLE_RDRPASS_UNLIT_2SIDED_ZSORT</a>];
00140
00141 <font class="comment">// add only zsort rdrPass triangles.</font>
00142 <font class="keywordflow">for</font>(<a class="code" href="types__nl_8h.html#a13">uint</a> i=0; i<vegetRdrPass.NTriangles; i++, triPtr++, triId++)
00143 {
00144 <font class="comment">// QSort.</font>
00145 triPtr->Dist = ptrIg->_TriangleQuadrantOrders[quadrant][i];
00146
00147 <font class="comment">// copy tri info</font>
00148 triPtr->TriIndex= triId;
00149
00150 <font class="comment">// fill the triangle indices.</font>
00151 *(triIdxPtr++)= vegetRdrPass.TriangleIndices[i*3 + 0];
00152 *(triIdxPtr++)= vegetRdrPass.TriangleIndices[i*3 + 1];
00153 *(triIdxPtr++)= vegetRdrPass.TriangleIndices[i*3 + 2];
00154 }
00155
00156 <font class="comment">// next Ig in the SortBlock</font>
00157 ptrIg= (CVegetableInstanceGroup*)(ptrIg->Next);
00158 }
00159
00160 <font class="comment">// sort the array according to distance</font>
00161 <font class="comment">//-------------</font>
00162 <font class="comment">// QSort.</font>
00163 sort(triSort.begin(), triSort.end());
00164
00165
00166 <font class="comment">// Fill result.</font>
00167 <font class="comment">//-------------</font>
00168 <font class="comment">// init quadrant ptr.</font>
00169 <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_5">_SortedTriangleIndices</a>[quadrant]= <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_4">_SortedTriangleArray</a>.<a class="code" href="classNLMISC_1_1CObjectVector.html#z291_2">getPtr</a>() + quadrant * <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_7">_NIndices</a>;
00170
00171 <font class="comment">// fill the indices.</font>
00172 <a class="code" href="types__nl_8h.html#a9">uint32</a> *pIdx= <a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_5">_SortedTriangleIndices</a>[quadrant];
00173 <font class="keywordflow">for</font>(<a class="code" href="types__nl_8h.html#a13">uint</a> i=0; i<<a class="code" href="classNL3D_1_1CVegetableSortBlock.html#z820_6">_NTriangles</a>; i++)
00174 {
00175 <a class="code" href="types__nl_8h.html#a9">uint32</a> idTriIdx= triSort[i].TriIndex * 3;
00176 *(pIdx++)= triIndices[idTriIdx+0];
00177 *(pIdx++)= triIndices[idTriIdx+1];
00178 *(pIdx++)= triIndices[idTriIdx+2];
00179 }
00180 }
00181 }
00182
00183
00184
00185
00186 } <font class="comment">// NL3D</font>
</pre></div>
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