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<hr><h1>chain_quad.cpp</h1><a href="chain__quad_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="stdpacs_8h.html">stdpacs.h</a>"</font>
00027 
00028 <font class="preprocessor">#include "<a class="code" href="chain__quad_8h.html">pacs/chain_quad.h</a>"</font>
00029 
00030 <font class="keyword">using</font>   <font class="keyword">namespace </font>std;
00031 <font class="keyword">using</font>   <font class="keyword">namespace </font>NLMISC;
00032 
00033 
00034 <font class="keyword">namespace </font>NLPACS
00035 {
00036 
00037 
00038 <font class="comment">// ***************************************************************************</font>
<a name="l00039"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#r0">00039</a> <font class="keyword">const</font>   <font class="keywordtype">float</font>   CChainQuad::_QuadElementSize= 4;        <font class="comment">// = 4 meters.</font>
00040 
00041 
00042 <font class="comment">// ***************************************************************************</font>
<a name="l00043"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a0">00043</a> CChainQuad::CChainQuad()
00044 {
00045         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00046         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= 0;
00047 }
00048 <font class="comment">// ***************************************************************************</font>
<a name="l00049"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a2">00049</a> CChainQuad::~CChainQuad()
00050 {
00051         <font class="keyword">delete</font> [] <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00052         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00053         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= 0;
00054 }
00055 <font class="comment">// ***************************************************************************</font>
<a name="l00056"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a1">00056</a> CChainQuad::CChainQuad(<font class="keyword">const</font> CChainQuad &amp;o)
00057 {
00058         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00059         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= 0;
00060         *<font class="keyword">this</font>= o;
00061 }
00062 <font class="comment">// ***************************************************************************</font>
<a name="l00063"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a3">00063</a> CChainQuad      &amp;CChainQuad::operator=(<font class="keyword">const</font> CChainQuad &amp;o)
00064 {
00065         <font class="comment">// Alloc good quaddata.</font>
00066         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= o._QuadDataLen;
00067         <font class="keyword">delete</font> [] <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00068         <font class="keywordflow">if</font>(<a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>&gt;0)
00069         {
00070                 <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= (uint8*)<font class="keyword">new</font> uint8[<a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>];
00071                 <font class="comment">// copy contents.</font>
00072                 memcpy(<a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>, o._QuadData, <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>);
00073         }
00074         <font class="keywordflow">else</font>
00075                 <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00076 
00077         <font class="comment">// copy infos.</font>
00078         <a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>= o._Width;
00079         <a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>= o._Height;
00080         <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>= o._X;
00081         <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>= o._Y;
00082 
00083         <font class="comment">// copy good pointers.</font>
00084         <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.clear();
00085         <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.resize(o._Quad.size(), NULL);
00086         <font class="keywordflow">for</font>(sint i=0; i&lt;(sint)<a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.size(); i++)
00087         {
00088                 <font class="keywordflow">if</font>(o._Quad[i])
00089                 {
00090                         uint32  off= (uint32)(o._Quad[i]-o._QuadData);
00091                         <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[i]= <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>+off;
00092                 }
00093         }
00094 
00095 
00096         <font class="keywordflow">return</font> *<font class="keyword">this</font>;
00097 }
00098 
00099 
00100 
00101 <font class="comment">// ***************************************************************************</font>
<a name="l00102"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#c1">00102</a> <font class="keywordtype">void</font>                    CChainQuad::getGridBounds(sint32 &amp;x0, sint32 &amp;y0, sint32 &amp;x1, sint32 &amp;y1, <font class="keyword">const</font> CVector &amp;minP, <font class="keyword">const</font> CVector &amp;maxP)<font class="keyword"> const</font>
00103 <font class="keyword"></font>{
00104         x0= (sint32)floor(minP.x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>;
00105         y0= (sint32)floor(minP.y / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>;
00106         x1= (sint32) ceil(maxP.x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>;
00107         y1= (sint32) ceil(maxP.y / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>;
00108         <font class="comment">// Manage selection of a point exactly on a quad bound</font>
00109         <font class="keywordflow">if</font>(x1-x0==0)
00110                 x0--, x1++;
00111         <font class="keywordflow">if</font>(y1-y0==0)
00112                 y0--, y1++;
00113         <font class="comment">// clamp</font>
00114         x0= max(x0, (sint32)0);
00115         y0= max(y0, (sint32)0);
00116         x1= <a class="code" href="bit__set_8cpp.html#a0">min</a>(x1, (sint32)<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>);
00117         y1= <a class="code" href="bit__set_8cpp.html#a0">min</a>(y1, (sint32)<a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>);
00118 }
00119 
00120 
00121 <font class="comment">// ***************************************************************************</font>
<a name="l00122"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a4">00122</a> <font class="keywordtype">void</font>                    CChainQuad::build(<font class="keyword">const</font> std::vector&lt;COrderedChain&gt; &amp;ochains)
00123 {
00124         vector&lt; list&lt;CEdgeChainEntry&gt; &gt; tempQuad;
00125         sint    i,j;
00126 
00127         <font class="comment">// first, clear any pr-build.</font>
00128         <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(<a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>);
00129         <font class="keyword">delete</font> [] <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00130         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00131         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= 0;
00132 
00133 
00134         <font class="comment">// 0. Find BBox of the grid. Allocate grid.</font>
00135         <font class="comment">//=========================================</font>
00136         <font class="keywordtype">bool</font>            first=<font class="keyword">true</font>;
00137         CAABBox         chainquadBBox;
00138         <font class="comment">// run all chains.</font>
00139         <font class="keywordflow">for</font>(i=0;i&lt;(sint)ochains.size();i++)
00140         {
00141                 <font class="keyword">const</font> std::vector&lt;CVector2s&gt;    &amp;vertices= ochains[i].getVertices();
00142 
00143                 <font class="comment">// run all vertices.</font>
00144                 <font class="keywordflow">for</font>(j= 0; j&lt;(sint)vertices.size();j++)
00145                 {
00146                         <font class="comment">// enlarge bbox.</font>
00147                         <font class="keywordflow">if</font>(first)
00148                                 first= <font class="keyword">false</font>, chainquadBBox.setCenter(vertices[j].unpack3f());
00149                         <font class="keywordflow">else</font>
00150                                 chainquadBBox.extend(vertices[j].unpack3f());
00151                 }
00152         }
00153 
00154         <font class="comment">// compute X,Y,Width, Height.</font>
00155         <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>= (sint32)floor(chainquadBBox.getMin().x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>);
00156         <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>= (sint32)floor(chainquadBBox.getMin().y / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>);
00157         <a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>= (sint32)ceil(chainquadBBox.getMax().x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>;
00158         <a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>= (sint32)ceil(chainquadBBox.getMax().y / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>;
00159 
00160         tempQuad.resize(<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>);
00161         <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.resize(<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>, NULL);
00162 
00163 
00164         <font class="comment">// 1. For each edge, add them to the quadgrid.</font>
00165         <font class="comment">//=========================================</font>
00166         <font class="comment">// run all chains.</font>
00167         <font class="keywordflow">for</font>(i=0;i&lt;(sint)ochains.size();i++)
00168         {
00169                 <font class="keyword">const</font> std::vector&lt;CVector2s&gt;    &amp;vertices= ochains[i].getVertices();
00170 
00171                 sint    numEdges= (sint)vertices.size()-1;
00172 
00173                 <font class="comment">// run all edges.</font>
00174                 <font class="keywordflow">for</font>(j= 0; j&lt;numEdges; j++)
00175                 {
00176                         <font class="keyword">const</font> CVector           p0= vertices[j].unpack3f();
00177                         <font class="keyword">const</font> CVector           p1= vertices[j+1].unpack3f();
00178                         CVector         minP,maxP;
00179                         minP.minof(p0, p1);
00180                         maxP.maxof(p0, p1);
00181                         <font class="comment">// PrecisionPb: extend a little this edge. This is important for special case like borders on zones.</font>
00182                         <font class="keywordflow">if</font>(minP.x-maxP.x==0)
00183                                 minP.x-=0.001f, maxP.x+=0.001f;
00184                         <font class="keywordflow">if</font>(minP.y-maxP.y==0)
00185                                 minP.y-=0.001f, maxP.y+=0.001f;
00186 
00187 
00188                         <font class="comment">// get bounding coordinate of this edge in the quadgrid.</font>
00189                         sint32  x0, y0, x1, y1;
00190                         <a class="code" href="classNLPACS_1_1CChainQuad.html#c1">getGridBounds</a>(x0, y0, x1, y1, minP, maxP);
00191 
00192                         <font class="comment">// add this edge to all the quadnode it touch.</font>
00193                         <font class="keywordflow">for</font>(sint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>= y0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>&lt;y1; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>++)
00194                         {
00195                                 <font class="keywordflow">for</font>(sint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>= x0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>&lt;x1; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>++)
00196                                 {
00197                                         list&lt;CEdgeChainEntry&gt;   &amp;quadNode= tempQuad[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>];
00198 
00199                                         <a class="code" href="classNLPACS_1_1CChainQuad.html#c0">addEdgeToQuadNode</a>(quadNode, i, j);
00200                                 }
00201                         }
00202                 }
00203         }
00204 
00205 
00206         <font class="comment">// 2. Mem optimisation: Use only 1 block for ALL quads of the grid.</font>
00207         <font class="comment">//=========================================</font>
00208         sint    memSize= 0;
00209         <font class="comment">// run all quads.</font>
00210         <font class="keywordflow">for</font>(i=0;i&lt;(sint)tempQuad.size();i++)
00211         {
00212                 list&lt;CEdgeChainEntry&gt;   &amp;quadNode= tempQuad[i];
00213 
00214                 <font class="keywordflow">if</font>(!quadNode.empty())
00215                 {
00216                         <font class="comment">// add an entry for Len.</font>
00217                         memSize+= <font class="keyword">sizeof</font>(uint16);
00218                         <font class="comment">// add N entry of CEdgeChainEntry.</font>
00219                         memSize+= quadNode.size()*<font class="keyword">sizeof</font>(CEdgeChainEntry);
00220                 }
00221         }
00222 
00223         <font class="comment">// allocate.</font>
00224         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= (uint8*)<font class="keyword">new</font> uint8[memSize];
00225         <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>= memSize;
00226 
00227 
00228         <font class="comment">// 3. Fill _QuadData with lists.</font>
00229         <font class="comment">//=========================================</font>
00230         uint8   *ptr= <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00231         <font class="keywordflow">for</font>(i=0;i&lt;(sint)tempQuad.size();i++)
00232         {
00233                 list&lt;CEdgeChainEntry&gt;                   &amp;srcQuadNode= tempQuad[i];
00234                 list&lt;CEdgeChainEntry&gt;::iterator it;
00235 
00236                 <font class="keywordflow">if</font>(!srcQuadNode.empty())
00237                 {
00238                         <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[i]= ptr;
00239 
00240                         <font class="comment">// write len.</font>
00241                         uint16  len= srcQuadNode.size();
00242                         *((uint16*)ptr)= len;
00243                         ptr+= <font class="keyword">sizeof</font>(uint16);
00244 
00245                         <font class="comment">// add entries.</font>
00246                         it= srcQuadNode.begin();
00247                         <font class="keywordflow">for</font>(j=0; j&lt;len; j++, it++)
00248                         {
00249                                 *((CEdgeChainEntry*)ptr)= *it;
00250                                 ptr+= <font class="keyword">sizeof</font>(CEdgeChainEntry);
00251                         }
00252                 }
00253         }
00254 
00255 
00256         <font class="comment">// End.</font>
00257 }
00258 
00259 
00260 <font class="comment">// ***************************************************************************</font>
<a name="l00261"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#c0">00261</a> <font class="keywordtype">void</font>                    CChainQuad::addEdgeToQuadNode(list&lt;CEdgeChainEntry&gt; &amp;quadNode, sint ochainId, sint edgeId)
00262 {
00263         <font class="comment">// 0. try to find, insert an edge in an existing CEdgeChainEntry.</font>
00264         <font class="comment">//=========================================</font>
00265         list&lt;CEdgeChainEntry&gt;::iterator         it;
00266         <font class="keywordflow">for</font>(it= quadNode.begin(); it!=quadNode.end();it++)
00267         {
00268                 <font class="keywordflow">if</font>(it-&gt;OChainId==ochainId)
00269                 {
00270                         <font class="comment">// selection is faster if we only manages a single start/end block.</font>
00271                         it-&gt;EdgeStart= <a class="code" href="bit__set_8cpp.html#a0">min</a>(it-&gt;EdgeStart, (uint16)edgeId);
00272                         it-&gt;EdgeEnd= max(it-&gt;EdgeEnd, (uint16)(edgeId+1));
00273                         <font class="keywordflow">return</font>;
00274                 }
00275         }
00276 
00277 
00278         <font class="comment">// 1. else, create new one.</font>
00279         <font class="comment">//=========================================</font>
00280         CEdgeChainEntry         entry;
00281         entry.OChainId= ochainId;
00282         entry.EdgeStart= edgeId;
00283         entry.EdgeEnd= edgeId+1;
00284         quadNode.push_back(entry);
00285 }
00286 
00287 
00288 <font class="comment">// ***************************************************************************</font>
<a name="l00289"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a5">00289</a> sint                    CChainQuad::selectEdges(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CAABBox.html">NLMISC::CAABBox</a> &amp;bbox, CCollisionSurfaceTemp &amp;cst)<font class="keyword"> const</font>
00290 <font class="keyword"></font>{
00291         sint    nRes=0;
00292         sint    i;
00293         uint16  *ochainLUT= cst.OChainLUT;
00294 
00295         <font class="comment">// start: no edge found.</font>
00296         cst.EdgeChainEntries.clear();
00297 
00298         <font class="comment">// get bounding coordinate of this bbox in the quadgrid.</font>
00299         sint32  x0, y0, x1, y1;
00300         <a class="code" href="classNLPACS_1_1CChainQuad.html#c1">getGridBounds</a>(x0, y0, x1, y1, bbox.<a class="code" href="classNLMISC_1_1CAABBox.html#z264_0">getMin</a>(), bbox.<a class="code" href="classNLMISC_1_1CAABBox.html#z264_1">getMax</a>());
00301 
00302 
00303         <font class="comment">// run all intersected quads.</font>
00304         <font class="keywordflow">for</font>(sint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>= y0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>&lt;y1; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>++)
00305         {
00306                 <font class="keywordflow">for</font>(sint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>= x0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>&lt;x1; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>++)
00307                 {
00308                         uint8   *quadNode= <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>];
00309 
00310                         <font class="comment">// no edgechain entry??</font>
00311                         <font class="keywordflow">if</font>(!quadNode)
00312                                 <font class="keywordflow">continue</font>;
00313 
00314                         <font class="comment">// get edgechain entries</font>
00315                         sint    numEdgeChainEntries= *((uint16*)quadNode);
00316                         quadNode+= <font class="keyword">sizeof</font>(uint16);
00317                         CEdgeChainEntry         *ptrEdgeChainEntry= (CEdgeChainEntry*)quadNode;
00318 
00319                         <font class="comment">// For each one, add it to the result list.</font>
00320                         <font class="keywordflow">for</font>(i=0;i&lt;numEdgeChainEntries;i++)
00321                         {
00322                                 uint16  ochainId= ptrEdgeChainEntry[i].OChainId;
00323 
00324                                 <font class="comment">// if ochain not yet inserted.</font>
00325                                 <font class="keywordflow">if</font>(ochainLUT[ochainId]==0xFFFF)
00326                                 {
00327                                         <font class="comment">// inc the list.</font>
00328                                         ochainLUT[ochainId]= nRes;
00329                                         cst.EdgeChainEntries.push_back(ptrEdgeChainEntry[i]);
00330                                         nRes++;
00331                                 }
00332                                 <font class="keywordflow">else</font>
00333                                 {
00334                                         <font class="comment">// extend the entry in the list.</font>
00335                                         uint16 <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>= ochainLUT[ochainId];
00336                                         CEdgeChainEntry         &amp;ece= cst.EdgeChainEntries[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>];
00337                                         ece.EdgeStart= <a class="code" href="bit__set_8cpp.html#a0">min</a>(ece.EdgeStart, ptrEdgeChainEntry[i].EdgeStart);
00338                                         ece.EdgeEnd= max(ece.EdgeEnd, ptrEdgeChainEntry[i].EdgeEnd);
00339                                 }
00340                         }
00341                 }
00342         }
00343 
00344 
00345         <font class="comment">// reset LUT to 0xFFFF for all ochains selected.</font>
00346         <font class="keywordflow">for</font>(i=0;i&lt;nRes;i++)
00347         {
00348                 uint16  ochainId= cst.EdgeChainEntries[i].OChainId;
00349                 ochainLUT[ochainId]= 0xFFFF;
00350         }
00351 
00352 
00353         <font class="keywordflow">return</font> nRes;
00354 }
00355 
<a name="l00356"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a6">00356</a> sint            CChainQuad::selectEdges(CVector start, CVector end, CCollisionSurfaceTemp &amp;cst)<font class="keyword"> const</font>
00357 <font class="keyword"></font>{
00358         sint    nRes=0;
00359         sint    i;
00360         uint16  *ochainLUT= cst.OChainLUT;
00361 
00362         <font class="comment">// start: no edge found.</font>
00363         cst.EdgeChainEntries.clear();
00364 
00365         <font class="keywordflow">if</font> (end.x &lt; start.x)
00366                 swap(start, end);
00367 
00368         <font class="keywordtype">float</font>   minx = <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>,
00369                         miny = <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>,
00370                         maxx = minx + <a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>,
00371                         maxy = miny + <a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>;
00372 
00373         <font class="keywordflow">if</font> (start.x &gt; maxx || end.x &lt; minx || start.y &gt; maxy || end.y &lt; miny)
00374                 <font class="keywordflow">return</font> nRes;
00375 
00376         <font class="keywordflow">if</font> (start.x &lt; minx)
00377         {
00378                 start.y = start.y+(end.y-start.y)*(minx-start.x)/(end.x-start.x);
00379                 start.x = minx;
00380         }
00381 
00382         <font class="keywordflow">if</font> (start.y &lt; miny)
00383         {
00384                 start.x = start.x+(end.x-start.x)*(miny-start.y)/(end.y-start.y);
00385                 start.y = miny;
00386         }
00387 
00388         <font class="keywordflow">if</font> (end.x &gt; maxx)
00389         {
00390                 end.y = start.y+(end.y-start.y)*(minx-start.x)/(end.x-start.x);
00391                 end.x = maxx;
00392         }
00393 
00394         <font class="keywordflow">if</font> (end.y &gt; maxy)
00395         {
00396                 end.x = start.x+(end.x-start.x)*(miny-start.y)/(end.y-start.y);
00397                 end.y = maxy;
00398         }
00399 
00400         sint32  x0, x1, ya, yb;
00401         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>;
00402         <font class="keywordtype">float</font>   fx, fxa, fxb, fya, fyb;
00403 
00404         x0 = (sint32)floor(start.x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>;
00405         x1 = (sint32)ceil(end.x / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>;
00406         fx = (x0+<a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>)*<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>;
00407 
00408         <font class="keywordflow">for</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>=x0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>&lt;x1; ++<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)
00409         {
00410                 fxa = (fx &lt; start.x) ? start.x : fx;
00411                 fxb = (fx+<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a> &gt; end.x) ? end.x : fx+<a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>;
00412 
00413                 fya = start.y+(end.y-start.y)*(fxa-start.x)/(end.x-start.x);
00414                 fyb = start.y+(end.y-start.y)*(fxb-start.x)/(end.x-start.x);
00415 
00416                 <font class="keywordflow">if</font> (fya &gt; fyb)
00417                         swap (fya, fyb);
00418 
00419                 ya = (sint32)floor(fya / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>;
00420                 yb = (sint32)ceil(fyb / <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>) - <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>;
00421 
00422                 fx += <a class="code" href="classNLPACS_1_1CChainQuad.html#r0">_QuadElementSize</a>;
00423 
00424                 <font class="keywordflow">for</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>=ya; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>&lt;yb; ++<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>)
00425                 {
00426                         uint8   *quadNode= <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*<a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>];
00427 
00428                         <font class="comment">// no edgechain entry??</font>
00429                         <font class="keywordflow">if</font>(!quadNode)
00430                                 <font class="keywordflow">continue</font>;
00431 
00432                         <font class="comment">// get edgechain entries</font>
00433                         sint    numEdgeChainEntries= *((uint16*)quadNode);
00434                         quadNode+= <font class="keyword">sizeof</font>(uint16);
00435                         CEdgeChainEntry         *ptrEdgeChainEntry= (CEdgeChainEntry*)quadNode;
00436 
00437                         <font class="comment">// For each one, add it to the result list.</font>
00438                         <font class="keywordflow">for</font>(i=0;i&lt;numEdgeChainEntries;i++)
00439                         {
00440                                 uint16  ochainId= ptrEdgeChainEntry[i].OChainId;
00441 
00442                                 <font class="comment">// if ochain not yet inserted.</font>
00443                                 <font class="keywordflow">if</font>(ochainLUT[ochainId]==0xFFFF)
00444                                 {
00445                                         <font class="comment">// inc the list.</font>
00446                                         ochainLUT[ochainId]= nRes;
00447                                         cst.EdgeChainEntries.push_back(ptrEdgeChainEntry[i]);
00448                                         nRes++;
00449                                 }
00450                                 <font class="keywordflow">else</font>
00451                                 {
00452                                         <font class="comment">// extend the entry in the list.</font>
00453                                         uint16 <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>= ochainLUT[ochainId];
00454                                         CEdgeChainEntry         &amp;ece= cst.EdgeChainEntries[<a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>];
00455                                         ece.EdgeStart= <a class="code" href="bit__set_8cpp.html#a0">min</a>(ece.EdgeStart, ptrEdgeChainEntry[i].EdgeStart);
00456                                         ece.EdgeEnd= max(ece.EdgeEnd, ptrEdgeChainEntry[i].EdgeEnd);
00457                                 }
00458                         }
00459                 }
00460         }
00461 
00462         <font class="comment">// reset LUT to 0xFFFF for all ochains selected.</font>
00463         <font class="keywordflow">for</font>(i=0;i&lt;nRes;i++)
00464         {
00465                 uint16  ochainId= cst.EdgeChainEntries[i].OChainId;
00466                 ochainLUT[ochainId]= 0xFFFF;
00467         }
00468 
00469         <font class="keywordflow">return</font> nRes;
00470 }
00471 
00472 <font class="comment">// ***************************************************************************</font>
<a name="l00473"></a><a class="code" href="classNLPACS_1_1CChainQuad.html#a7">00473</a> <font class="keywordtype">void</font>            CChainQuad::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &amp;f)
00474 {
00475         <font class="comment">/*</font>
00476 <font class="comment">        Version 0:</font>
00477 <font class="comment">                - base version.</font>
00478 <font class="comment">        */</font>
00479         (void)f.<a class="code" href="classNLMISC_1_1IStream.html#a29">serialVersion</a>(0);
00480         uint    i;
00481 
00482         <font class="comment">// serial basics.</font>
00483         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNLPACS_1_1CChainQuad.html#o3">_X</a>, <a class="code" href="classNLPACS_1_1CChainQuad.html#o4">_Y</a>, <a class="code" href="classNLPACS_1_1CChainQuad.html#o1">_Width</a>, <a class="code" href="classNLPACS_1_1CChainQuad.html#o2">_Height</a>, <a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>);
00484 
00485 
00486         <font class="comment">// serial _QuadData.</font>
00487         <font class="keywordflow">if</font>(f.<a class="code" href="classNLMISC_1_1IStream.html#a4">isReading</a>())
00488         {
00489                 <font class="keyword">delete</font> [] <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00490                 <font class="keywordflow">if</font>(<a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>&gt;0)
00491                         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= (uint8*)<font class="keyword">new</font> uint8[<a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>];
00492                 <font class="keywordflow">else</font>
00493                         <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>= NULL;
00494         }
00495         <font class="comment">// Since we have only uint16 (see CEdgeChainEntry), serial them in a single block.</font>
00496         uint16  *ptrQData= (uint16*)<a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>;
00497         <font class="keywordflow">for</font>(i=0;i&lt;<a class="code" href="classNLPACS_1_1CChainQuad.html#o6">_QuadDataLen</a>/2; i++, ptrQData++)
00498         {
00499                 f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(*ptrQData);
00500         }
00501 
00502 
00503         <font class="comment">// serial _Quad.</font>
00504         std::vector&lt;uint32&gt;             offsets;
00505         uint32          len;
00506         uint32          val;
00507         <font class="keywordflow">if</font>(f.<a class="code" href="classNLMISC_1_1IStream.html#a4">isReading</a>())
00508         {
00509                 <font class="comment">// len/resize.</font>
00510                 f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(len);
00511                 offsets.resize(len);
00512                 <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(<a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>);
00513                 <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.resize(len);
00514 
00515                 <font class="comment">// read offsets -&gt; ptrs.</font>
00516                 <font class="keywordflow">for</font>(i=0; i&lt;len; i++)
00517                 {
00518                         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(val);
00519                         <font class="keywordflow">if</font>(val== 0xFFFFFFFF)
00520                                 <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[i]= NULL;
00521                         <font class="keywordflow">else</font>
00522                                 <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[i]= <a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>+val;
00523                 }
00524         }
00525         <font class="keywordflow">else</font>
00526         {
00527                 <font class="comment">// len/resize.</font>
00528                 len= <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>.size();
00529                 f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(len);
00530 
00531                 <font class="comment">// write offsets.</font>
00532                 <font class="keywordflow">for</font>(i=0; i&lt;len; i++)
00533                 {
00534                         uint8   *ptr= <a class="code" href="classNLPACS_1_1CChainQuad.html#o0">_Quad</a>[i];
00535                         <font class="keywordflow">if</font>(ptr==NULL)
00536                                 val= 0xFFFFFFFF;
00537                         <font class="keywordflow">else</font>
00538                                 val= (uint32)(ptr-<a class="code" href="classNLPACS_1_1CChainQuad.html#o5">_QuadData</a>);
00539                         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(val);
00540                 }
00541         }
00542 
00543 }
00544 
00545 
00546 
00547 } <font class="comment">// NLPACS</font>
</pre></div>

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