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<hr><h1>ps_face_look_at.cpp</h1><a href="ps__face__look__at_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="ps__face__look__at_8h.html">3d/ps_face_look_at.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="ps__macro_8h.html">3d/ps_macro.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="driver_8h.html">3d/driver.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="ps__iterator_8h.html">3d/ps_iterator.h</a>"</font>
00033 
00034 
00035 <font class="keyword">namespace </font>NL3D 
00036 {
00037 
00038 
00039 
00041 <font class="comment">// CPSFaceLookAt implementation //</font>
00043 <font class="comment"></font>
00044 
<a name="l00050"></a><a class="code" href="classNL3D_1_1CPSFaceLookAtHelper.html">00050</a> <font class="keyword">class </font>CPSFaceLookAtHelper
00051 {
00052 <font class="keyword">public</font>:
00053         <font class="keyword">template</font> &lt;<font class="keyword">class</font> T&gt;      
<a name="l00054"></a><a class="code" href="classNL3D_1_1CPSFaceLookAtHelper.html#d0">00054</a>         <font class="keyword">static</font> <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CPSFaceLookAtHelper.html#d0">drawLookAt</a>(T it, T speedIt, CPSFaceLookAt &amp;la, uint size, uint32 srcStep)
00055         {
00056                 PARTICLES_CHECK_MEM;    
00057                 <a class="code" href="debug_8h.html#a6">nlassert</a>(la._Owner);                    
00058                 IDriver *driver = la.getDriver();
00059 
00060                 la.updateMatBeforeRendering(driver);
00061                 
00062                 CVertexBuffer &amp;vb = la.getNeededVB();
00063                 la._Owner-&gt;incrementNbDrawnParticles(size); <font class="comment">// for benchmark purpose    </font>
00064                 la.setupDriverModelMatrix();
00065                 driver-&gt;activeVertexBuffer(vb); 
00066                 <font class="keyword">const</font> CVector I = la.computeI();
00067                 <font class="keyword">const</font> CVector J = la.computeJ();
00068                 <font class="keyword">const</font> CVector K = la.computeK();                
00069                 <font class="keyword">const</font> <font class="keywordtype">float</font> *rotTable = CPSRotated2DParticle::getRotTable();    
00070                 <font class="comment">// for each the particle can be constantly rotated or have an independant rotation for each particle</font>
00071                 <font class="comment">// number of face left, and number of face to process at once</font>
00072                 uint32 leftToDo = size, toProcess;
00073                 <font class="keywordtype">float</font> pSizes[CPSQuad::quadBufSize]; <font class="comment">// the sizes to use </font>
00074                 <font class="keywordtype">float</font> pSecondSizes[CPSQuad::quadBufSize]; <font class="comment">// the second sizes to use</font>
00075                 <font class="keywordtype">float</font> *currentSize; 
00076                 uint32 currentSizeStep = la._SizeScheme ? 1 : 0;
00077                 <font class="comment">// point the vector part in the current vertex</font>
00078                 uint8 *ptPos;
00079                 <font class="comment">// strides to go from one vertex to another one</font>
00080                 <font class="keyword">const</font> uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a> = vb.getVertexSize(), stride2 = <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a> &lt;&lt; 1, stride3 = <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a> + stride2, stride4 = <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a> &lt;&lt; 2;     
00081                 <font class="keywordflow">if</font> (!la._Angle2DScheme)
00082                 {
00083                         <font class="comment">// constant rotation case</font>
00084                         <font class="keywordflow">do</font>
00085                         {                       
00086                                 <font class="comment">// restart at the beginning of the vertex buffer</font>
00087                                 ptPos = (uint8 *) vb.getVertexCoordPointer();
00088                                 toProcess = leftToDo &lt;= CPSQuad::quadBufSize ? leftToDo : CPSQuad::quadBufSize;
00089 
00090                                 <font class="keywordflow">if</font> (la._SizeScheme)
00091                                 {
00092                                         currentSize = (<font class="keywordtype">float</font> *) la._SizeScheme-&gt;make(la._Owner, size- leftToDo, pSizes, <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep);
00093                                 }
00094                                 <font class="keywordflow">else</font>
00095                                 {
00096                                         currentSize = &amp;la._ParticleSize;
00097                                 }
00098                                 
00099                                 la.updateVbColNUVForRender(vb, size - leftToDo, toProcess, srcStep);                                    
00100                                 T endIt = it + toProcess;
00101                                 <font class="keywordflow">if</font> (la._MotionBlurCoeff == 0.f)
00102                                 {
00103                                         <font class="keywordflow">if</font> (!la._IndependantSizes)
00104                                         {                                               
00105                                                 <font class="keyword">const</font> uint32 tabIndex = (((uint32) la._Angle2D) &amp; 0xff) &lt;&lt; 2;
00106                                                 <font class="keyword">const</font> CVector v1 = rotTable[tabIndex] * I + rotTable[tabIndex + 1] * K;
00107                                                 <font class="keyword">const</font> CVector v2 = rotTable[tabIndex + 2] * I + rotTable[tabIndex + 3] * K;
00108                                                 <font class="keywordflow">if</font> (currentSizeStep)
00109                                                 {
00110                                                         <font class="keywordflow">while</font> (it != endIt)
00111                                                         {
00112                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00113                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v1.x;                        
00114                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v1.y;                        
00115                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v1.z;                        
00116                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00117 
00118                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00119                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v2.x;                        
00120                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v2.y;                        
00121                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v2.z;                        
00122                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00123 
00124                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00125                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v1.x;                        
00126                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v1.y;                        
00127                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v1.z;                        
00128                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00129 
00130                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00131                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v2.x;                        
00132                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v2.y;                        
00133                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v2.z;                        
00134                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;                                                        
00135 
00136                                                                 ++it;
00137                                                                 currentSize += currentSizeStep;                                 
00138                                                         }
00139                                                 }
00140                                                 <font class="keywordflow">else</font>
00141                                                 {
00142                                                         <font class="comment">// constant size</font>
00143                                                         <font class="keyword">const</font> CVector myV1 = *currentSize * v1;
00144                                                         <font class="keyword">const</font> CVector myV2 = *currentSize * v2;
00145 
00146                                                         <font class="keywordflow">while</font> (it != endIt)
00147                                                         {
00148                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00149                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + myV1.x;                     
00150                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + myV1.y;                     
00151                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + myV1.z;                     
00152                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00153 
00154                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00155                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + myV2.x;                     
00156                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + myV2.y;                     
00157                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + myV2.z;                     
00158                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00159 
00160                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00161                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - myV1.x;                     
00162                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - myV1.y;                     
00163                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - myV1.z;                     
00164                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00165 
00166                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00167                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - myV2.x;                     
00168                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - myV2.y;                     
00169                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - myV2.z;                     
00170                                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;                                                        
00171                                                                 ++it;                                                                                   
00172                                                         }
00173                                                 }
00174                                         }
00175                                         <font class="keywordflow">else</font> <font class="comment">// independant sizes</font>
00176                                         {                       
00177                                                 <font class="keyword">const</font> CVector v1 = CPSUtil::getCos((sint32) la._Angle2D) * I  + CPSUtil::getSin((sint32) la._Angle2D) * K;
00178                                                 <font class="keyword">const</font> CVector v2 = - CPSUtil::getSin((sint32) la._Angle2D) * I + CPSUtil::getCos((sint32) la._Angle2D) * K;
00179 
00180                                                 <font class="keywordtype">float</font> *currentSize2;
00181                                                 <font class="keywordtype">float</font> secondSize;
00182                                                 uint32 currentSizeStep2;
00183                                                 <font class="keywordflow">if</font> (la._SecondSize.getSizeScheme())
00184                                                 {
00185                                                         currentSize2 = (<font class="keywordtype">float</font> *) la._SecondSize.getSizeScheme()-&gt;make(la._Owner, size- leftToDo, pSecondSizes, <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep);
00186                                                         currentSizeStep2 = 1;
00187                                                 }
00188                                                 <font class="keywordflow">else</font>
00189                                                 {       
00190                                                         secondSize = la._SecondSize.getSize();
00191                                                         currentSize2 = &amp;secondSize;
00192                                                         currentSizeStep2 = 0;
00193                                                 }
00194                                                  
00195 
00196                                                 <font class="keywordflow">while</font> (it != endIt)
00197                                                 {
00198                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00199                                                         ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v1.x + *currentSize2 * v2.x;                         
00200                                                         ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v1.y + *currentSize2 * v2.y;                         
00201                                                         ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v1.z + *currentSize2 * v2.z;
00202                                                         ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00203 
00204                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00205                                                         ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v1.x + *currentSize2 * v2.x;                         
00206                                                         ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v1.y + *currentSize2 * v2.y;                         
00207                                                         ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v1.z + *currentSize2 * v2.z;
00208                                                         ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00209 
00210                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00211                                                         ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v1.x - *currentSize2 * v2.x;                         
00212                                                         ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v1.y - *currentSize2 * v2.y;                         
00213                                                         ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v1.z - *currentSize2 * v2.z;
00214                                                         ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00215 
00216                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00217                                                         ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v1.x - *currentSize2 * v2.x;                         
00218                                                         ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v1.y - *currentSize2 * v2.y;                         
00219                                                         ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v1.z - *currentSize2 * v2.z;
00220                                                         ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00221                                                         ++it;
00222                                                         currentSize += currentSizeStep;
00223                                                         currentSize2 += currentSizeStep2;
00224                                                 }                                       
00225                                         }
00226                                 }
00227                                 <font class="keywordflow">else</font>
00228                                 {
00229                                         <font class="comment">// perform motion, blur, we need an iterator on speed</font>
00230                                         <font class="comment">// independant sizes and rotation not supported for now with motion blur                                </font>
00231                                         <font class="keyword">const</font> CVector v1 = I + K;
00232                                         <font class="keyword">const</font> CVector v2 = K - I;                                                               
00233                                         CVector startV, endV, mbv1, mbv1n, mbv12, mbv2;
00234                                         <font class="comment">// norme of the v1 vect</font>
00235                                         <font class="keywordtype">float</font> n;
00236                                         <font class="keyword">const</font> <font class="keywordtype">float</font> epsilon  = 10E-5f;
00237                                         <font class="keyword">const</font> <font class="keywordtype">float</font> normEpsilon  = 10E-6f;
00238                                         
00239                                         CMatrix tMat =  la._Owner-&gt;isInSystemBasis() ? la.getViewMat()  *  la.getSysMat()
00240                                                                                                                           : la.getViewMat();
00241                         
00242                                         <font class="keywordflow">while</font> (it != endIt)
00243                                         {
00244                                                 <font class="comment">// project the speed in the projection plane</font>
00245                                                 <font class="comment">// this give us the v1 vect</font>
00246                                                 startV = tMat * *it ;                                           
00247                                                 endV = tMat * (*it + *speedIt);                                                                                                 
00248                                                 <font class="keywordflow">if</font> (startV.y &gt; epsilon || endV.y &gt; epsilon)                                                                                                                                                                                                                                                                             
00249                                                 {       
00250                                                         <font class="keywordflow">if</font> (startV.y &lt; epsilon)
00251                                                         {
00252                                                                 <font class="keywordflow">if</font> (fabsf(endV.y - startV.y) &gt; normEpsilon)
00253                                                                 {
00254                                                                         startV = endV + (endV.y - epsilon) / (endV.y - startV.y) * (startV - endV);
00255                                                                 }
00256                                                                 startV.y = epsilon;
00257                                                         }
00258                                                         <font class="keywordflow">else</font> <font class="keywordflow">if</font> (endV.y &lt; epsilon)
00259                                                         {       
00260                                                                 <font class="keywordflow">if</font> (fabsf(endV.y - startV.y) &gt; normEpsilon)
00261                                                                 {
00262                                                                         endV = startV + (startV.y - epsilon) / (startV.y - endV.y) * (endV - startV);
00263                                                                 }
00264                                                                 endV.y = epsilon;
00265                                                         }                                                                                                               
00266 
00267                                                         mbv1 = (startV.x / startV.y - endV.x / endV.y) * I
00268                                                                                         + (startV.z / startV.y - endV.z / endV.y) * K ;                                         
00269                                                 
00270                                                         n = mbv1.norm();
00271                                                         <font class="keywordflow">if</font> (n &gt; la._Threshold)
00272                                                         {
00273                                                                 mbv1 *= la._Threshold / n;
00274                                                                 n = la._Threshold;                                                              
00275                                                         }                                                                                                                                                                                                               
00276                                                         <font class="keywordflow">if</font> (n &gt; normEpsilon)                                                                                            
00277                                                         {                                                                                                                                                                                       
00278                                                                 mbv1n = mbv1 / n;                                                                                                               
00279                                                                 mbv2 = *currentSize * (J ^ mbv1n);
00280                                                                 mbv12 = -*currentSize * mbv1n;                                                  
00281                                                                 mbv1 *= *currentSize * (1 + la._MotionBlurCoeff * n * n) / n;
00282                                                         
00283                                                                 *(CVector *) ptPos = *it - mbv2;                                                                                                
00284                                                                 *(CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>) = *it  + mbv1;                    
00285                                                                 *(CVector *) (ptPos + stride2) = *it + mbv2;    
00286                                                                 *(CVector *) (ptPos + stride3) = *it + mbv12;
00287                                                         
00288                                                         
00289                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00290                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - mbv2.x;                     
00291                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - mbv2.y;
00292                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - mbv2.z;
00293                                                                 
00294                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>);
00295                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;x = (*it).x  + mbv1.x;                          
00296                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;y = (*it).y  + mbv1.y;                          
00297                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;z = (*it).z  + mbv1.z;                          
00298 
00299                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride2);
00300                                                                 ((CVector *) (ptPos + stride2))-&gt;x = (*it).x  + mbv2.x;                         
00301                                                                 ((CVector *) (ptPos + stride2))-&gt;y = (*it).y  + mbv2.y;                         
00302                                                                 ((CVector *) (ptPos + stride2))-&gt;z = (*it).z  + mbv2.z;                         
00303 
00304 
00305                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride3);
00306                                                                 ((CVector *) (ptPos + stride3))-&gt;x = (*it).x  + mbv12.x;                        
00307                                                                 ((CVector *) (ptPos + stride3))-&gt;y = (*it).y  + mbv12.y;                        
00308                                                                 ((CVector *) (ptPos + stride3))-&gt;z = (*it).z  + mbv12.z;                                                                                                
00309                                                                 
00310                                                         }
00311                                                         <font class="keywordflow">else</font> <font class="comment">// speed too small, we must avoid imprecision</font>
00312                                                         {
00313                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00314                                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v2.x;                        
00315                                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v2.y;                        
00316                                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v2.z;                        
00317                                                                 
00318                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>);
00319                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;x = (*it).x  + *currentSize * v1.x;                     
00320                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;y = (*it).y  + *currentSize * v1.y;                     
00321                                                                 ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;z = (*it).z  + *currentSize * v1.z;                     
00322 
00323                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride2);
00324                                                                 ((CVector *) (ptPos + stride2))-&gt;x = (*it).x  + *currentSize * v2.x;                    
00325                                                                 ((CVector *) (ptPos + stride2))-&gt;y = (*it).y  + *currentSize * v2.y;                    
00326                                                                 ((CVector *) (ptPos + stride2))-&gt;z = (*it).z  + *currentSize * v2.z;                    
00327 
00328 
00329                                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride3);
00330                                                                 ((CVector *) (ptPos + stride3))-&gt;x = (*it).x  - *currentSize * v1.x;                    
00331                                                                 ((CVector *) (ptPos + stride3))-&gt;y = (*it).y  - *currentSize * v1.y;                    
00332                                                                 ((CVector *) (ptPos + stride3))-&gt;z = (*it).z  - *currentSize * v1.z;                                                    
00333                                                         }
00334                                                 }
00335                                                 <font class="keywordflow">else</font>
00336                                                 {
00337 
00338                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00339                                                         ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v2.x;                        
00340                                                         ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v2.y;                        
00341                                                         ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v2.z;                        
00342                                                         
00343                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>);
00344                                                         ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;x = (*it).x  + *currentSize * v1.x;                     
00345                                                         ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;y = (*it).y  + *currentSize * v1.y;                     
00346                                                         ((CVector *) (ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>))-&gt;z = (*it).z  + *currentSize * v1.z;                     
00347 
00348                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride2);
00349                                                         ((CVector *) (ptPos + stride2))-&gt;x = (*it).x  + *currentSize * v2.x;                    
00350                                                         ((CVector *) (ptPos + stride2))-&gt;y = (*it).y  + *currentSize * v2.y;                    
00351                                                         ((CVector *) (ptPos + stride2))-&gt;z = (*it).z  + *currentSize * v2.z;                    
00352 
00353 
00354                                                         <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride3);
00355                                                         ((CVector *) (ptPos + stride3))-&gt;x = (*it).x  - *currentSize * v1.x;                    
00356                                                         ((CVector *) (ptPos + stride3))-&gt;y = (*it).y  - *currentSize * v1.y;                    
00357                                                         ((CVector *) (ptPos + stride3))-&gt;z = (*it).z  - *currentSize * v1.z;                                                                                                    
00358                                                 }
00359                                         
00360                                                 ptPos += stride4;
00361                                                 ++it;
00362                                                 ++speedIt;
00363                                                 currentSize += currentSizeStep;                                 
00364                                         }
00365 
00366                                 }                       
00367                                 driver-&gt;renderQuads(la._Mat, 0, toProcess);                     
00368                                 leftToDo -= toProcess;                          
00369                         }
00370                         <font class="keywordflow">while</font> (leftToDo);
00371                 }
00372                 <font class="keywordflow">else</font>
00373                 {               
00374                         <font class="keywordtype">float</font> pAngles[CPSQuad::quadBufSize]; <font class="comment">// the angles to use</font>
00375                         <font class="keywordtype">float</font> *currentAngle;            
00376                         <font class="keywordflow">do</font>
00377                         {                       
00378                                 <font class="comment">// restart at the beginning of the vertex buffer</font>
00379                                 ptPos = (uint8 *) vb.getVertexCoordPointer();
00380                                 toProcess = leftToDo &lt;= CPSQuad::quadBufSize ? leftToDo : CPSQuad::quadBufSize;
00381                                 <font class="keywordflow">if</font> (la._SizeScheme)
00382                                 {
00383                                         currentSize = (<font class="keywordtype">float</font> *) la._SizeScheme-&gt;make(la._Owner, size - leftToDo, pSizes, <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep);
00384                                 }
00385                                 <font class="keywordflow">else</font>
00386                                 {
00387                                         currentSize = &amp;la._ParticleSize;
00388                                 }
00389                                 currentAngle = (<font class="keywordtype">float</font> *) la._Angle2DScheme-&gt;make(la._Owner, size - leftToDo, pAngles, <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep);
00390                                 la.updateVbColNUVForRender(vb, size - leftToDo, toProcess, srcStep);                                    
00391                                 T endIt = it + toProcess;
00392                                 CVector v1, v2;
00393                                 <a class="code" href="namespaceNL3D.html#a360">OptFastFloorBegin</a>();
00394                                 <font class="keywordflow">if</font> (!la._IndependantSizes)
00395                                 {                               
00396                                         <font class="keywordflow">while</font> (it != endIt)
00397                                         {
00398                                                 <font class="keyword">const</font> uint32 tabIndex = ((<a class="code" href="namespaceNL3D.html#a362">OptFastFloor</a>(*currentAngle)) &amp; 0xff) &lt;&lt; 2;                    
00399                                                 <font class="comment">// lets avoid some ctor calls</font>
00400                                                 v1.x = *currentSize * (rotTable[tabIndex] * I.x + rotTable[tabIndex + 1] * K.x);
00401                                                 v1.y = *currentSize * (rotTable[tabIndex] * I.y + rotTable[tabIndex + 1] * K.y);
00402                                                 v1.z = *currentSize * (rotTable[tabIndex] * I.z + rotTable[tabIndex + 1] * K.z);
00403 
00404                                                 v2.x = *currentSize * (rotTable[tabIndex + 2] * I.x + rotTable[tabIndex + 3] * K.x);
00405                                                 v2.y = *currentSize * (rotTable[tabIndex + 2] * I.y + rotTable[tabIndex + 3] * K.y);
00406                                                 v2.z = *currentSize * (rotTable[tabIndex + 2] * I.z + rotTable[tabIndex + 3] * K.z);
00407                                                 
00408                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00409                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>);
00410                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride2);
00411                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos + stride3);                               
00412                                         
00413                                                 ((CVector *) ptPos)-&gt;x  = (*it).x  + v1.x;              
00414                                                 ((CVector *) ptPos)-&gt;y  = (*it).y  + v1.y;
00415                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + v1.z;                       
00416                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00417 
00418                                                 ((CVector *) ptPos)-&gt;x  = (*it).x  + v2.x;              
00419                                                 ((CVector *) ptPos)-&gt;y  = (*it).y  + v2.y;
00420                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + v2.z;                       
00421                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00422 
00423                                                 ((CVector *) ptPos)-&gt;x  = (*it).x  - v1.x;              
00424                                                 ((CVector *) ptPos)-&gt;y  = (*it).y  - v1.y;
00425                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - v1.z;                       
00426                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00427 
00428                                                 ((CVector *) ptPos)-&gt;x  = (*it).x  - v2.x;              
00429                                                 ((CVector *) ptPos)-&gt;y  = (*it).y  - v2.y;
00430                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - v2.z;                                       
00431                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00432                                                 
00433                                                 ++it;
00434                                                 currentSize += currentSizeStep;
00435                                                 ++currentAngle;                                 
00436                                         }
00437                                 }
00438                                 <font class="keywordflow">else</font> <font class="comment">// independant size, and non-constant rotation</font>
00439                                 {
00440                                         
00441                                         <font class="keywordtype">float</font> *currentSize2;
00442                                         <font class="keywordtype">float</font> secondSize;
00443                                         uint32 currentSizeStep2;
00444                                         <font class="keywordflow">if</font> (la._SecondSize.getSizeScheme())
00445                                         {
00446                                                 currentSize2 = (<font class="keywordtype">float</font> *) la._SecondSize.getSizeScheme()-&gt;make(la._Owner, size- leftToDo, pSecondSizes, <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep);
00447                                                 currentSizeStep2 = 1;
00448                                         }
00449                                         <font class="keywordflow">else</font>
00450                                         {       
00451                                                 secondSize = la._SecondSize.getSize();
00452                                                 currentSize2 = &amp;secondSize;
00453                                                 currentSizeStep2 = 0;
00454                                         }
00455 
00456                                         <font class="keywordtype">float</font> cosAngle, sinAngle;
00457                                         <font class="keywordflow">while</font> (it != endIt)
00458                                         {
00459                                                 cosAngle = CPSUtil::getCos((sint32) *currentAngle);
00460                                                 sinAngle = CPSUtil::getSin((sint32) *currentAngle);
00461                                                 v1 = cosAngle * I  + sinAngle * K;
00462                                                 v2 = - sinAngle * I + cosAngle * K;
00463 
00464                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00465                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v1.x + *currentSize2 * v2.x;                         
00466                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v1.y + *currentSize2 * v2.y;                         
00467                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v1.z + *currentSize2 * v2.z;
00468                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00469 
00470                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00471                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v1.x + *currentSize2 * v2.x;                         
00472                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v1.y + *currentSize2 * v2.y;                         
00473                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v1.z + *currentSize2 * v2.z;
00474                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00475 
00476                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00477                                                 ((CVector *) ptPos)-&gt;x = (*it).x  + *currentSize * v1.x - *currentSize2 * v2.x;                         
00478                                                 ((CVector *) ptPos)-&gt;y = (*it).y  + *currentSize * v1.y - *currentSize2 * v2.y;                         
00479                                                 ((CVector *) ptPos)-&gt;z = (*it).z  + *currentSize * v1.z - *currentSize2 * v2.z;
00480                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00481 
00482                                                 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, ptPos);
00483                                                 ((CVector *) ptPos)-&gt;x = (*it).x  - *currentSize * v1.x - *currentSize2 * v2.x;                         
00484                                                 ((CVector *) ptPos)-&gt;y = (*it).y  - *currentSize * v1.y - *currentSize2 * v2.y;                         
00485                                                 ((CVector *) ptPos)-&gt;z = (*it).z  - *currentSize * v1.z - *currentSize2 * v2.z;
00486                                                 ptPos += <a class="code" href="driver__opengl__extension__def_8h.html#a374">stride</a>;
00487                                                 ++it;
00488                                                 ++currentAngle;
00489                                                 currentSize  += currentSizeStep;
00490                                                 currentSize2 += currentSizeStep2;                       
00491                                         }
00492                                 }                               
00493                                 <a class="code" href="namespaceNL3D.html#a361">OptFastFloorEnd</a>();                                                      
00494                                 driver-&gt;renderQuads(la._Mat, 0, toProcess);                     
00495                                 leftToDo -= toProcess;
00496                         }
00497                         <font class="keywordflow">while</font> (leftToDo);
00498                 }
00499                 PARTICLES_CHECK_MEM;
00500         }
00501 };
00502 
<a name="l00504"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#b0">00504</a> <font class="keywordtype">void</font> CPSFaceLookAt::draw(<font class="keywordtype">bool</font> opaque)
00505 {
00506         PARTICLES_CHECK_MEM;    
00507         <font class="keywordflow">if</font> (!<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>-&gt;getSize()) <font class="keywordflow">return</font>; 
00508 
00509         uint32 <a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>;
00510         uint   numToProcess;
00511         <a class="code" href="classNL3D_1_1CPSParticle.html#b4">computeSrcStep</a>(<a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>, numToProcess);     
00512         <font class="keywordflow">if</font> (!numToProcess) <font class="keywordflow">return</font>;
00513         
00514 
00515         <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a> == (1 &lt;&lt; 16))
00516         {
00517                 CPSFaceLookAtHelper::drawLookAt(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>-&gt;getPos().begin(),
00518                                    <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>-&gt;getSpeed().begin(),
00519                                    *<font class="keyword">this</font>,
00520                                     numToProcess,
00521                                         <a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>
00522                            );
00523         }
00524         <font class="keywordflow">else</font>
00525         {               
00526                 CPSFaceLookAtHelper::drawLookAt(<a class="code" href="namespaceNL3D.html#a199">TIteratorVectStep1616</a>(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>-&gt;getPos().begin(), 0, <a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>),
00527                                    <a class="code" href="namespaceNL3D.html#a199">TIteratorVectStep1616</a>(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>-&gt;getSpeed().begin(), 0, <a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>),
00528                                    *<font class="keyword">this</font>,
00529                                    numToProcess,
00530                                    <a class="code" href="classNL3D_1_1CPSParticle.html#a4">step</a>                         
00531                                   );
00532         }
00533         
00534         PARTICLES_CHECK_MEM;
00535 }
00536 
<a name="l00538"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#a0">00538</a> CPSFaceLookAt::CPSFaceLookAt(CSmartPtr&lt;ITexture&gt; tex) : CPSQuad(tex), _MotionBlurCoeff(0.f)
00539                                                                                                                 , _Threshold(0.5f), _IndependantSizes(false)
00540 {       
00541         <a class="code" href="classNL3D_1_1CPSFaceLookAt.html#n2">_SecondSize</a>.<a class="code" href="structNL3D_1_1CPSFaceLookAt_1_1CSecondSize.html#m0">Owner</a> = <font class="keyword">this</font>;
00542         <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n3">_Name</a> = std::string(<font class="stringliteral">"LookAt"</font>);
00543 }
00544 
<a name="l00546"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#b1">00546</a> <font class="keywordtype">void</font> CPSFaceLookAt::newElement(CPSLocated *emitterLocated, uint32 emitterIndex)
00547 {
00548         CPSQuad::newElement(emitterLocated, emitterIndex);
00549         <a class="code" href="classNL3D_1_1CPSRotated2DParticle.html#b1">newAngle2DElement</a>(emitterLocated, emitterIndex);
00550 }
00551 
<a name="l00553"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#b2">00553</a> <font class="keywordtype">void</font> CPSFaceLookAt::deleteElement(uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>)
00554 {
00555         CPSQuad::deleteElement(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>);
00556         <a class="code" href="classNL3D_1_1CPSRotated2DParticle.html#b2">deleteAngle2DElement</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>);
00557 }
00558 
<a name="l00560"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#b3">00560</a> <font class="keywordtype">void</font> CPSFaceLookAt::resize(uint32 capacity)
00561 {
00562         <a class="code" href="debug_8h.html#a6">nlassert</a>(capacity &lt; (1 &lt;&lt; 16));
00563         CPSQuad::resize(capacity);
00564         <a class="code" href="classNL3D_1_1CPSRotated2DParticle.html#b3">resizeAngle2D</a>(capacity);
00565 }
00566 
00567 
<a name="l00569"></a><a class="code" href="classNL3D_1_1CPSFaceLookAt.html#a1">00569</a> <font class="keywordtype">void</font> CPSFaceLookAt::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &amp;f) <font class="keywordflow">throw</font>(NLMISC::EStream)
00570 {
00571         sint ver = f.serialVersion(2);
00572         CPSQuad::serial(f);
00573         CPSRotated2DParticle::serialAngle2DScheme(f);   
00574         f.serial(_MotionBlurCoeff);
00575         <font class="keywordflow">if</font> (_MotionBlurCoeff != 0)
00576         {
00577                 f.serial(_Threshold);
00578         }
00579         <font class="keywordflow">if</font> (ver &gt; 1)
00580         {
00581                 f.serial(_IndependantSizes);
00582                 <font class="keywordflow">if</font> (_IndependantSizes)
00583                 {
00584                         _SecondSize.serialSizeScheme(f);
00585                 }
00586         }
00587         <font class="keywordflow">if</font> (f.isReading())
00588         {
00589                 init();         
00590         }
00591 }
00592 
00593 } <font class="comment">// NL3D</font>
</pre></div>

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