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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&lt;</a>(<font class="keyword">const</font> CSortTri &amp;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>&gt;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 &amp;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-&gt;_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-&gt;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> &lt; 65536);
+00120 <font class="keyword">static</font> std::vector&lt;CSortTri&gt; triSort;
+00121 <font class="keyword">static</font> std::vector&lt;uint32&gt; 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&lt;<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= &amp;triSort[0];
+00133 <a class="code" href="types__nl_8h.html#a9">uint32</a> *triIdxPtr= &amp;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 &amp;vegetRdrPass= ptrIg-&gt;_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&lt;vegetRdrPass.NTriangles; i++, triPtr++, triId++)
+00143 {
+00144 <font class="comment">// QSort.</font>
+00145 triPtr-&gt;Dist = ptrIg-&gt;_TriangleQuadrantOrders[quadrant][i];
+00146
+00147 <font class="comment">// copy tri info</font>
+00148 triPtr-&gt;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-&gt;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&lt;<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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