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<hr><h1>chain.cpp</h1><a href="chain_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_8h.html">pacs/chain.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="comment">// Functions for vertices comparison.</font>
00035 <font class="comment">// total order relation</font>
<a name="l00036"></a><a class="code" href="chain_8cpp.html#a0">00036</a> <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">bool</font>      <a class="code" href="chain_8cpp.html#a0">isStrictlyLess</a>(<font class="keyword">const</font> CVector &amp;a, <font class="keyword">const</font> CVector &amp;b)
00037 {
00038         <font class="keywordflow">if</font> (a.x &lt; b.x)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00039         <font class="keywordflow">if</font> (a.x &gt; b.x)  <font class="keywordflow">return</font> <font class="keyword">false</font>;
00040         <font class="keywordflow">if</font> (a.y &lt; b.y)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00041         <font class="keywordflow">if</font> (a.y &gt; b.y)  <font class="keywordflow">return</font> <font class="keyword">false</font>;
00042         <font class="keywordflow">if</font> (a.z &lt; b.y)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00043         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00044 }
00045 
<a name="l00046"></a><a class="code" href="chain_8cpp.html#a1">00046</a> <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">bool</font>      <a class="code" href="chain_8cpp.html#a1">isStrictlyGreater</a>(<font class="keyword">const</font> CVector &amp;a, <font class="keyword">const</font> CVector &amp;b)
00047 {
00048         <font class="keywordflow">if</font> (a.x &gt; b.x)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00049         <font class="keywordflow">if</font> (a.x &lt; b.x)  <font class="keywordflow">return</font> <font class="keyword">false</font>;
00050         <font class="keywordflow">if</font> (a.y &gt; b.y)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00051         <font class="keywordflow">if</font> (a.y &lt; b.y)  <font class="keywordflow">return</font> <font class="keyword">false</font>;
00052         <font class="keywordflow">if</font> (a.z &gt; b.y)  <font class="keywordflow">return</font> <font class="keyword">true</font>;
00053         <font class="keywordflow">return</font> <font class="keyword">false</font>;
00054 }
00055 
<a name="l00056"></a><a class="code" href="chain_8cpp.html#a2">00056</a> <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">bool</font>      <a class="code" href="chain_8cpp.html#a2">isEqual</a>(<font class="keyword">const</font> CVector &amp;a, <font class="keyword">const</font> CVector &amp;b)
00057 {
00058         <font class="keywordflow">return</font> (a == b);
00059 }
00060 
00061 
00062 <font class="comment">// COrderedChain3f methods implementation</font>
00063 
<a name="l00064"></a><a class="code" href="classNLPACS_1_1COrderedChain3f.html#a7">00064</a> <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1COrderedChain3f.html#a7">NLPACS::COrderedChain3f::serial</a>(IStream &amp;f)
00065 {
00066         <font class="comment">/*</font>
00067 <font class="comment">        Version 0:</font>
00068 <font class="comment">                - base version.</font>
00069 <font class="comment">        */</font>
00070         (void)f.serialVersion(0);
00071 
00072         f.serialCont(<a class="code" href="classNLPACS_1_1COrderedChain3f.html#n0">_Vertices</a>);
00073         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain3f.html#n1">_Forward</a>);
00074         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain3f.html#n2">_ParentId</a>);
00075         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain3f.html#n3">_IndexInParent</a>);
00076 }
00077 
00078 <font class="comment">// end of COrderedChain3f methods implementation</font>
00079 
00080 <font class="comment">// COrderedChain methods implementation</font>
00081 
00082 <font class="comment">// translates the ordered chain by the vector translation</font>
<a name="l00083"></a><a class="code" href="classNLPACS_1_1COrderedChain.html#a8">00083</a> <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1COrderedChain.html#a8">NLPACS::COrderedChain::translate</a>(<font class="keyword">const</font> CVector &amp;translation)
00084 {
00085         uint    i;
00086         CVector2s       translat;
00087         translat.pack(translation);
00088         <font class="keywordflow">for</font> (i=0; i&lt;<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.size(); ++i)
00089                 <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i] += translat;
00090 }
00091 
00092 <font class="comment">//</font>
00093 <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1COrderedChain.html#a11">NLPACS::COrderedChain::traverse</a>(sint from, sint to, <font class="keywordtype">bool</font> forward, vector&lt;NLPACS::CVector2s&gt; &amp;path)<font class="keyword"> const</font>
00094 <font class="keyword"></font>{
00095         sint    i;
00096         <font class="keywordflow">if</font> (forward)
00097         {
00098                 <font class="keywordflow">if</font> (from &lt; 0)   from = 0;
00099                 <font class="keywordflow">if</font> (to &lt; 0)             to = <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.size()-1;
00100 
00101                 <font class="keywordflow">for</font> (i=from+1; i&lt;=to; ++i)
00102                         path.push_back(<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i]);
00103         }
00104         <font class="keywordflow">else</font>
00105         {
00106                 <font class="keywordflow">if</font> (from &lt; 0)   from = <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.size()-2;
00107                 <font class="keywordflow">if</font> (to &lt; 0)             to = -1;
00108 
00109                 <font class="keywordflow">for</font> (i=from; i&gt;to; --i)
00110                         path.push_back(<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i]);
00111         }
00112 }
00113 
00114 <font class="comment">//</font>
<a name="l00115"></a><a class="code" href="classNLPACS_1_1COrderedChain.html#a12">00115</a> <font class="keywordtype">float</font>   <a class="code" href="classNLPACS_1_1COrderedChain.html#a12">NLPACS::COrderedChain::distance</a>(<font class="keyword">const</font> CVector &amp;position)<font class="keyword"> const</font>
00116 <font class="keyword"></font>{
00117         <font class="keywordtype">float</font>           minDist = 1.0e10f;
00118         uint            i;
00119         CVector2f       pos = CVector2f(position);
00120 
00121         <font class="keywordflow">for</font> (i=0; i+1&lt;<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.size(); ++i)
00122         {
00123                 CVector2f       a = <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i].unpack(),
00124                                         b = <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i+1].unpack();
00125 
00126                 CVector2f       d = (b-a);
00127                 <font class="keywordtype">float</font>           len = d.norm();
00128                 d /= len;
00129                 CVector2f       n = CVector2f(d.y, -d.x);
00130 
00131                 <font class="keywordtype">float</font>           <a class="code" href="namespaceNLAISCRIPT.html#a20">l</a> = (pos-a)*d;
00132                 <font class="keywordtype">float</font>           dist;
00133 
00134                 <font class="keywordflow">if</font> (<a class="code" href="namespaceNLAISCRIPT.html#a20">l</a> &lt; 0.0f)
00135                 {
00136                         dist = (pos-a).norm();
00137                 }
00138                 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (<a class="code" href="namespaceNLAISCRIPT.html#a20">l</a> &gt; len)
00139                 {
00140                         dist = (pos-b).norm();
00141                 }
00142                 <font class="keywordflow">else</font>
00143                 {
00144                         dist = (float)fabs((pos-a)*n);
00145                 }
00146 
00147                 <font class="keywordflow">if</font> (dist &lt; minDist)
00148                 {
00149                         minDist = dist;
00150                 }
00151         }
00152 
00153         <font class="keywordflow">return</font> minDist;
00154 }
00155 
00156 
00157 <font class="comment">// serialises the ordered chain</font>
<a name="l00158"></a><a class="code" href="classNLPACS_1_1COrderedChain.html#a13">00158</a> <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1COrderedChain.html#a13">NLPACS::COrderedChain::serial</a>(IStream &amp;f)
00159 {
00160         <font class="comment">/*</font>
00161 <font class="comment">        Version 0:</font>
00162 <font class="comment">                - base version.</font>
00163 <font class="comment">        Version 1:</font>
00164 <font class="comment">                - added _Min and _Max vectors</font>
00165 <font class="comment">        */</font>
00166         sint    ver= f.serialVersion(1);
00167 
00168         f.serialCont(<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>);
00169         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain.html#n1">_Forward</a>);
00170         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain.html#n2">_ParentId</a>);
00171         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain.html#n3">_IndexInParent</a>);
00172         f.serial(<a class="code" href="classNLPACS_1_1COrderedChain.html#n4">_Length</a>);
00173 
00174         <font class="keywordflow">if</font> (ver &gt;= 1)
00175         {
00176                 f.serial(<a class="code" href="classNLPACS_1_1COrderedChain.html#n5">_Min</a>, <a class="code" href="classNLPACS_1_1COrderedChain.html#n6">_Max</a>);
00177         }
00178         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (f.isReading() &amp;&amp; !<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.empty())
00179         {
00180                 uint    i;
00181                 <a class="code" href="classNLPACS_1_1COrderedChain.html#n6">_Max</a> = <a class="code" href="classNLPACS_1_1COrderedChain.html#n5">_Min</a> = <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[0];
00182                 <font class="keywordflow">for</font> (i=1; i&lt;<a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>.size(); ++i)
00183                 {
00184                         <a class="code" href="classNLPACS_1_1COrderedChain.html#n5">_Min</a>.minof(<a class="code" href="classNLPACS_1_1COrderedChain.html#n5">_Min</a>, <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i]);
00185                         <a class="code" href="classNLPACS_1_1COrderedChain.html#n6">_Max</a>.maxof(<a class="code" href="classNLPACS_1_1COrderedChain.html#n6">_Max</a>, <a class="code" href="classNLPACS_1_1COrderedChain.html#n0">_Vertices</a>[i]);
00186                 }
00187         }
00188 }
00189 
00190 <font class="comment">// end of COrderedChain methods implementation</font>
00191 
00192 
00193 <font class="comment">// CChain methods implementation</font>
00194 
00195 <font class="comment">// builds the CChain from a list of vertices and a left and right surfaces id.</font>
00196 <font class="comment">// the chains vector is the vector where to store generated ordered chains.</font>
00197 <font class="comment">// thisId is the current id of the CChain, and edge is the number of the edge the CChain belongs to (-1</font>
00198 <font class="comment">// if none.)</font>
00199 <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1CChain.html#b0">NLPACS::CChain::make</a>(<font class="keyword">const</font> vector&lt;CVector&gt; &amp;vertices, sint32 left, sint32 right, vector&lt;COrderedChain&gt; &amp;chains, uint16 thisId,
00200                                                          vector&lt;COrderedChain3f&gt; &amp;fullChains)
00201 {
00202         sint            first = 0, last = 0, i;
00203 
00204         _Left = left;
00205         _Right = right;
00206         <a class="code" href="classNLPACS_1_1COrderedChain.html#n4">_Length</a> = 0.0f;
00207 
00208         <font class="comment">// splits the vertices list in ordered sub chains.</font>
00209         <font class="keywordflow">while</font> (first &lt; (sint)vertices.size()-1)
00210         {
00211                 last = first+1;
00212                 <font class="keywordtype">bool</font>    forward = <a class="code" href="chain_8cpp.html#a0">isStrictlyLess</a>(vertices[first], vertices[last]);
00213 
00214                 <font class="comment">// first checks if the subchain goes forward or backward.</font>
00215                 <font class="keywordflow">if</font> (forward)
00216                         <font class="keywordflow">for</font> (; last &lt; (sint)vertices.size() &amp;&amp; <a class="code" href="chain_8cpp.html#a0">isStrictlyLess</a>(vertices[last-1], vertices[last]); ++last)
00217                                 ;
00218                 <font class="keywordflow">else</font>
00219                         <font class="keywordflow">for</font> (; last &lt; (sint)vertices.size() &amp;&amp; <a class="code" href="chain_8cpp.html#a1">isStrictlyGreater</a>(vertices[last-1], vertices[last]); ++last)
00220                                 ;
00221                 --last;
00222 
00223                 <font class="comment">// inserts the new subchain id within the CChain.</font>
00224                 uint32  subChainId = chains.size();
00225                 <font class="keywordflow">if</font> (subChainId &gt; 65535)
00226                         <a class="code" href="debug_8h.html#a3">nlerror</a>(<font class="stringliteral">"in NLPACS::CChain::make(): reached the maximum number of ordered chains"</font>);
00227                 _SubChains.push_back((uint16)subChainId);
00228 
00229                 <font class="comment">// and creates a new COrderedChain</font>
00230                 fullChains.resize(fullChains.size()+1);
00231                 COrderedChain3f &amp;subchain3f = fullChains.back();
00232                 subchain3f._Vertices.reserve(last-first+1);
00233                 subchain3f._Forward = forward;
00234                 subchain3f._ParentId = thisId;
00235                 subchain3f._IndexInParent = _SubChains.size()-1;
00236 
00237                 <font class="comment">// and then copies the vertices (sorted, btw!)</font>
00238                 <font class="keywordflow">if</font> (forward)
00239                         <font class="keywordflow">for</font> (i=first; i&lt;=last; ++i)
00240                                 subchain3f._Vertices.push_back(vertices[i]);
00241                 <font class="keywordflow">else</font>
00242                         <font class="keywordflow">for</font> (i=last; i&gt;=first; --i)
00243                                 subchain3f._Vertices.push_back(vertices[i]);
00244 
00245                 first = last;
00246 
00247                 chains.resize(chains.size()+1);
00248                 COrderedChain   &amp;subchain = chains.back();
00249                 subchain.pack(subchain3f);
00250                 subchain.computeMinMax();
00251 
00252                 <font class="keywordtype">float</font>   length = 0.0f;
00253                 <font class="keywordflow">for</font> (i=0; i&lt;(sint)subchain._Vertices.size()-1; ++i)
00254                         length += (subchain._Vertices[i+1]-subchain._Vertices[i]).norm();
00255 
00256                 subchain._Length = length;
00257                 <a class="code" href="classNLPACS_1_1COrderedChain.html#n4">_Length</a> += length;
00258         }
00259 }
00260 
00261 <font class="comment">// serialises the CChain</font>
<a name="l00262"></a><a class="code" href="classNLPACS_1_1CChain.html#a14">00262</a> <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1CChain.html#a14">NLPACS::CChain::serial</a>(IStream &amp;f)
00263 {
00264         <font class="comment">/*</font>
00265 <font class="comment">        Version 0:</font>
00266 <font class="comment">                - base version.</font>
00267 <font class="comment">        */</font>
00268         (void)f.serialVersion(0);
00269 
00270         f.serialCont(<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>);
00271         f.serial(<a class="code" href="classNLPACS_1_1CChain.html#n1">_Left</a>, <a class="code" href="classNLPACS_1_1CChain.html#n2">_Right</a>);
00272         f.serial(<a class="code" href="classNLPACS_1_1CChain.html#n3">_StartTip</a>, <a class="code" href="classNLPACS_1_1CChain.html#n4">_StopTip</a>);
00273         f.serial(<a class="code" href="classNLPACS_1_1CChain.html#n5">_Length</a>);
00274         f.serial(<a class="code" href="classNLPACS_1_1CChain.html#n6">_LeftLoop</a>, <a class="code" href="classNLPACS_1_1CChain.html#n7">_LeftLoopIndex</a>);
00275         f.serial(<a class="code" href="classNLPACS_1_1CChain.html#n8">_RightLoop</a>, <a class="code" href="classNLPACS_1_1CChain.html#n9">_RightLoopIndex</a>);
00276 }
00277 
00278 
00279 
00280 <font class="comment">// unifiies the chain</font>
00281 <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1CChain.html#b3">NLPACS::CChain::unify</a>(vector&lt;NLPACS::COrderedChain&gt; &amp;ochains)
00282 {
00283         CVector2s       snap;
00284         uint            i;
00285 
00286         snap = (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[0]].isForward()) ? ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[0]]._Vertices.back() : ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[0]]._Vertices.front();
00287 
00288         <font class="keywordflow">for</font> (i=1; i&lt;<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.size(); ++i)
00289         {
00290                 <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]].isForward())
00291                 {
00292                         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.front() != snap)
00293                                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"ochain %d and %d are not stuck together"</font>, <a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i-1], <a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]);
00294                         ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.front() = snap;
00295                         snap = ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.back();
00296                 }
00297                 <font class="keywordflow">else</font>
00298                 {
00299                         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.back() != snap)
00300                                 <a class="code" href="debug_8h.html#a2">nlwarning</a>(<font class="stringliteral">"ochain %d and %d are not stuck together"</font>, <a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i-1], <a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]);
00301                         ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.back() = snap;
00302                         snap = ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>[i]]._Vertices.front();
00303                 }
00304         }
00305 
00306 }
00307 
00308 <font class="comment">//</font>
00309 <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1CChain.html#b4">NLPACS::CChain::setStartVector</a>(<font class="keyword">const</font> <a class="code" href="classNLPACS_1_1CVector2s.html">NLPACS::CVector2s</a> &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, vector&lt;NLPACS::COrderedChain&gt; &amp;ochains)
00310 {
00311         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()].isForward())
00312                 ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()]._Vertices.front() = v;
00313         <font class="keywordflow">else</font>
00314                 ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()]._Vertices.back() = v;
00315 }
00316 
00317 <font class="comment">//</font>
00318 <font class="keywordtype">void</font>    <a class="code" href="classNLPACS_1_1CChain.html#b5">NLPACS::CChain::setStopVector</a>(<font class="keyword">const</font> <a class="code" href="classNLPACS_1_1CVector2s.html">NLPACS::CVector2s</a> &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, vector&lt;NLPACS::COrderedChain&gt; &amp;ochains)
00319 {
00320         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()].isForward())
00321                 ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()]._Vertices.back() = v;
00322         <font class="keywordflow">else</font>
00323                 ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()]._Vertices.front() = v;
00324 }
00325 
00326 <font class="comment">//</font>
00327 <a class="code" href="classNLPACS_1_1CVector2s.html">NLPACS::CVector2s</a>       <a class="code" href="classNLPACS_1_1CChain.html#b6">NLPACS::CChain::getStartVector</a>(vector&lt;NLPACS::COrderedChain&gt; &amp;ochains)
00328 {
00329         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()].isForward())
00330                 <font class="keywordflow">return</font> ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()]._Vertices.front();
00331         <font class="keywordflow">else</font>
00332                 <font class="keywordflow">return</font> ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.front()]._Vertices.back();
00333 }
00334 
00335 <font class="comment">//</font>
00336 <a class="code" href="classNLPACS_1_1CVector2s.html">NLPACS::CVector2s</a>       <a class="code" href="classNLPACS_1_1CChain.html#b7">NLPACS::CChain::getStopVector</a>(vector&lt;NLPACS::COrderedChain&gt; &amp;ochains)
00337 {
00338         <font class="keywordflow">if</font> (ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()].isForward())
00339                 <font class="keywordflow">return</font> ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()]._Vertices.back();
00340         <font class="keywordflow">else</font>
00341                 <font class="keywordflow">return</font> ochains[<a class="code" href="classNLPACS_1_1CChain.html#n0">_SubChains</a>.back()]._Vertices.front();
00342 }
00343 
00344 <font class="comment">// end of CChain methods implementation</font>
00345 
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