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<hr><h1>vegetable.cpp</h1><a href="vegetable_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025 
00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00027 
00028 <font class="preprocessor">#include "<a class="code" href="vegetable_8h.html">3d/vegetable.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="common_8h.html">nel/misc/common.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="vegetable__manager_8h.html">3d/vegetable_manager.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font>
00032 
00033 
00034 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00035 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00036 
00037 
00038 <font class="keyword">namespace </font>NL3D 
00039 {
00040 
00041 
00042 <font class="comment">// ***************************************************************************</font>
00043 <font class="comment">// Generate random value, but seed is spacial. Take a high frequency, so it gets more the aspect of random.</font>
00044 <font class="keyword">static</font>  CNoiseValue             <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>(0,1, 7.68f);
00045 
00046 
00047 <font class="comment">// ***************************************************************************</font>
<a name="l00048"></a><a class="code" href="classNL3D_1_1CVegetable.html#a0">00048</a> CVegetable::CVegetable()
00049 {
00050         <font class="comment">// Ground style density.</font>
00051         <a class="code" href="classNL3D_1_1CVegetable.html#z878_1">setAngleGround</a>(0);
00052 
00053         <font class="comment">// Density not maximised.</font>
00054         <a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a>= -1;
00055 
00056         <font class="comment">// No scale.</font>
00057         <a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>.Abs= <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>.Abs= 1;
00058         <a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>.Rand= <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>.Rand= 0;
00059         <font class="comment">// No rotation.</font>
00060         <a class="code" href="classNL3D_1_1CVegetable.html#m5">Rx</a>.Abs= <a class="code" href="classNL3D_1_1CVegetable.html#m6">Ry</a>.Abs= <a class="code" href="classNL3D_1_1CVegetable.html#m7">Rz</a>.Abs= 0;
00061         <a class="code" href="classNL3D_1_1CVegetable.html#m5">Rx</a>.Rand= <a class="code" href="classNL3D_1_1CVegetable.html#m6">Ry</a>.Rand= <a class="code" href="classNL3D_1_1CVegetable.html#m7">Rz</a>.Rand= 0;
00062         <font class="comment">// No BendFactor.</font>
00063         <a class="code" href="classNL3D_1_1CVegetable.html#m8">BendFactor</a>.Abs= 1;
00064         <a class="code" href="classNL3D_1_1CVegetable.html#m8">BendFactor</a>.Rand= 0;
00065         <a class="code" href="classNL3D_1_1CVegetable.html#m10">BendFrequencyFactor</a>= 1;
00066 
00067         <font class="comment">// Appear at 0.</font>
00068         <a class="code" href="classNL3D_1_1CVegetable.html#m12">DistType</a>= 0;
00069 
00070         <a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>= NULL;
00071 }
00072 
00073 
00074 <font class="comment">// ***************************************************************************</font>
<a name="l00075"></a><a class="code" href="classNL3D_1_1CVegetable.html#z878_1">00075</a> <font class="keywordtype">void</font>    CVegetable::setAngleGround(<font class="keywordtype">float</font> cosAngleMin)
00076 {
00077         <a class="code" href="classNL3D_1_1CVegetable.html#o4">_AngleType</a>= <a class="code" href="classNL3D_1_1CVegetable.html#z878_0s4">AngleGround</a>;
00078 
00079         <a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a>= cosAngleMin;
00080         <font class="comment">// We must be at densityFactor==1, when cosAngle==1, keeping the same formula.</font>
00081         <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>= 1 + (1-cosAngleMin);
00082 
00083         <font class="comment">// precalc</font>
00084         <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>= (<a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a> + <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>)/2;
00085         <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a> - <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>;
00086         <font class="keywordflow">if</font>(_OOCosAngleDist)
00087                 <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= 1.0f / <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>;
00088 }
00089 
00090 <font class="comment">// ***************************************************************************</font>
<a name="l00091"></a><a class="code" href="classNL3D_1_1CVegetable.html#z878_2">00091</a> <font class="keywordtype">void</font>    CVegetable::setAngleCeiling(<font class="keywordtype">float</font> cosAngleMax)
00092 {
00093         <a class="code" href="classNL3D_1_1CVegetable.html#o4">_AngleType</a>= <a class="code" href="classNL3D_1_1CVegetable.html#z878_0s5">AngleCeiling</a>;
00094 
00095         <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>= cosAngleMax;
00096         <font class="comment">// We must be at densityFactor==1, when cosAngle==-1, keeping the same formula.</font>
00097         <a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a>= -1 - (cosAngleMax-(-1));
00098         
00099         <font class="comment">// precalc</font>
00100         <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>= (<a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a> + <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>)/2;
00101         <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a> - <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>;
00102         <font class="keywordflow">if</font>(_OOCosAngleDist)
00103                 <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= 1.0f / <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>;
00104 }
00105 
00106 <font class="comment">// ***************************************************************************</font>
<a name="l00107"></a><a class="code" href="classNL3D_1_1CVegetable.html#z878_3">00107</a> <font class="keywordtype">void</font>    CVegetable::setAngleWall(<font class="keywordtype">float</font> cosAngleMin, <font class="keywordtype">float</font> cosAngleMax)
00108 {
00109         <a class="code" href="classNL3D_1_1CVegetable.html#o4">_AngleType</a>= <a class="code" href="classNL3D_1_1CVegetable.html#z878_0s6">AngleWall</a>;
00110 
00111         <a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a>= cosAngleMin;
00112         <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>= cosAngleMax;
00113 
00114         <font class="comment">// precalc</font>
00115         <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>= (<a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a> + <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>)/2;
00116         <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a> - <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>;
00117         <font class="keywordflow">if</font>(_OOCosAngleDist)
00118                 <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>= 1.0f / <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>;
00119 }
00120 
00121 
00122 <font class="comment">// ***************************************************************************</font>
<a name="l00123"></a><a class="code" href="classNL3D_1_1CVegetable.html#a1">00123</a> <font class="keywordtype">void</font>    CVegetable::registerToManager(CVegetableManager *manager)
00124 {
00125         <a class="code" href="debug_8h.html#a6">nlassert</a>(manager);
00126         <a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>= manager;
00127         <a class="code" href="classNL3D_1_1CVegetable.html#o6">_VegetableShape</a>= <a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>-&gt;getVegetableShape(<a class="code" href="classNL3D_1_1CVegetable.html#m0">ShapeName</a>);
00128 }
00129 
00130 
00131 <font class="comment">// ***************************************************************************</font>
<a name="l00132"></a><a class="code" href="classNL3D_1_1CVegetable.html#c0">00132</a> <font class="keywordtype">void</font>    CVegetable::generateGroupEx(<font class="keywordtype">float</font> nbInst, <font class="keyword">const</font> CVector &amp;posInWorld, <font class="keyword">const</font> CVector &amp;surfaceNormal, uint vegetSeed, std::vector&lt;CVector2f&gt; &amp;instances)<font class="keyword"> const</font>
00133 <font class="keyword"></font>{
00134 
00135         <font class="comment">// Density modulation.</font>
00136         <font class="comment">//===================</font>
00137 
00138         <font class="comment">// compute cos of angle between surfaceNormal and K(0,0,1).</font>
00139         <font class="keywordtype">float</font>   cosAngle= surfaceNormal.z;
00140         <font class="comment">// compute angleFactor density. Use a quadratic, because f'(_CosAngleMiddle)==0.</font>
00141         <font class="keywordtype">float</font>   angleFact= 1 - <a class="code" href="namespaceNLMISC.html#a214">sqr</a>((cosAngle - <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>) * <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>);
00142         angleFact= max(0.f, angleFact);
00143         <font class="comment">// modulate density with angleFactor.</font>
00144         nbInst*= angleFact;
00145 
00146         <font class="comment">// Now, 0&lt;=nbInst&lt;+oo. If we have 0.1, it means that we have 10% chance to spawn an instance.</font>
00147         <font class="comment">// So add a "random" value (with help of a noise with High frequency)</font>
00148         <font class="comment">// if nbInst==0, we should never have any instance (which may arise if evalOneLevelRandom()==1).</font>
00149         <font class="comment">// hence the 0.99f* which ensure that we do nbInst+= [0..1[.</font>
00150         nbInst+= 0.99f * <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>.evalOneLevelRandom(posInWorld);
00151 
00152         <font class="comment">// and then get only the integral part.</font>
00153         sint    nbInstances= <a class="code" href="namespaceNL3D.html#a362">OptFastFloor</a>(nbInst);
00154         nbInstances= max(0, nbInstances);
00155 
00156         <font class="comment">// resize the instances</font>
00157         instances.resize(nbInstances);
00158 
00159         <font class="comment">// Position generation.</font>
00160         <font class="comment">//===================</font>
00161         <font class="comment">// For now, generate them randomly.</font>
00162         <font class="keyword">static</font> CVector2f        dSeed(0.513f, 0.267f);  <font class="comment">// random values.</font>
00163         CVector                         seed= posInWorld;
00164         seed.z+= vegetSeed * 0.723f;    <font class="comment">// 0.723f is a random value.</font>
00165         <font class="keywordflow">for</font>(sint i=0; i&lt;nbInstances; i++)
00166         {
00167                 instances[i].x= <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>.evalOneLevelRandom(seed);
00168                 seed.x+= dSeed.x;
00169                 instances[i].y= <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>.evalOneLevelRandom(seed);
00170                 seed.y+= dSeed.y;
00171         }
00172 }
00173 
00174 
00175 <font class="comment">// ***************************************************************************</font>
<a name="l00176"></a><a class="code" href="classNL3D_1_1CVegetable.html#a2">00176</a> <font class="keywordtype">void</font>    CVegetable::generateGroup(<font class="keyword">const</font> CVector &amp;posInWorld, <font class="keyword">const</font> CVector &amp;surfaceNormal, <font class="keywordtype">float</font> area, uint vegetSeed, std::vector&lt;CVector2f&gt; &amp;instances)<font class="keyword"> const</font>
00177 <font class="keyword"></font>{
00178         <font class="comment">// number of instances to generate</font>
00179         <font class="keywordtype">float</font>   dens= <a class="code" href="classNL3D_1_1CVegetable.html#m1">Density</a>.eval(posInWorld);
00180         <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a> &gt;= 0)
00181                 dens= <a class="code" href="bit__set_8cpp.html#a0">min</a>(dens, <a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a>);
00182         <font class="keywordtype">float</font>   nbInst= area * dens;
00183 
00184         <font class="comment">// modulate by normal and generate them.</font>
00185         <a class="code" href="classNL3D_1_1CVegetable.html#c0">generateGroupEx</a>(nbInst, posInWorld, surfaceNormal, vegetSeed, instances);
00186 }
00187 
00188 
00189 <font class="comment">// ***************************************************************************</font>
<a name="l00190"></a><a class="code" href="classNL3D_1_1CVegetable.html#a3">00190</a> <font class="keywordtype">void</font>    CVegetable::generateGroupBiLinear(<font class="keyword">const</font> CVector &amp;posInWorld, <font class="keyword">const</font> CVector posInWorldBorder[4], <font class="keyword">const</font> CVector &amp;surfaceNormal, <font class="keywordtype">float</font> area, uint vegetSeed, std::vector&lt;CVector2f&gt; &amp;instances)<font class="keyword"> const</font>
00191 <font class="keyword"></font>{
00192         sint    i;
00193         <font class="keyword">const</font>   <font class="keywordtype">float</font> evenDistribFact= 12.25f;          <font class="comment">// an arbitrary value to have a higher frequency for random.</font>
00194 
00195         <font class="comment">// compute how many instances to generate on borders of the patch</font>
00196         <font class="comment">// ==================</font>
00197         <font class="keywordtype">float</font>   edgeDensity[4];
00198         <font class="keywordflow">for</font>(i=0; i&lt;4; i++)
00199         {
00200                 <font class="comment">// Get number of instances generated on edges</font>
00201                 edgeDensity[i]= area * <a class="code" href="classNL3D_1_1CVegetable.html#m1">Density</a>.eval(posInWorldBorder[i]);
00202                 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a> &gt;= 0)
00203                         edgeDensity[i]= <a class="code" href="bit__set_8cpp.html#a0">min</a>(edgeDensity[i], area * <a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a>);
00204                 edgeDensity[i]= max(0.f, edgeDensity[i]);
00205         }
00206         <font class="comment">// Average on center of the patch for each direction.</font>
00207         <font class="keywordtype">float</font>   edgeDensityCenterX;
00208         <font class="keywordtype">float</font>   edgeDensityCenterY;
00209         edgeDensityCenterX= 0.5f * (edgeDensity[0] + edgeDensity[1]);
00210         edgeDensityCenterY= 0.5f * (edgeDensity[2] + edgeDensity[3]);
00211 
00212         
00213         <font class="comment">// Average for all the patch</font>
00214         <font class="keywordtype">float</font>   nbInstAverage= 0.5f * (edgeDensityCenterX + edgeDensityCenterY);
00215 
00216 
00217         <font class="comment">// generate instances on the patch</font>
00218         <font class="comment">// ==================</font>
00219         <a class="code" href="classNL3D_1_1CVegetable.html#c0">generateGroupEx</a>(nbInstAverage, posInWorld, surfaceNormal, vegetSeed, instances);
00220 
00221 
00222 
00223         <font class="comment">// move instances x/y to follow edge repartition</font>
00224         <font class="comment">// ==================</font>
00225         <font class="comment">// If on a direction, both edges are 0 density, then must do a special formula</font>
00226         <font class="keywordtype">bool</font>    middleX= edgeDensityCenterX&lt;=1;
00227         <font class="keywordtype">bool</font>    middleY= edgeDensityCenterY&lt;=1;
00228         <font class="keywordtype">float</font>   OOEdgeDCX=0.0;
00229         <font class="keywordtype">float</font>   OOEdgeDCY=0.0;
00230         <font class="keywordflow">if</font>(!middleX)    OOEdgeDCX= 1.0f / edgeDensityCenterX;
00231         <font class="keywordflow">if</font>(!middleY)    OOEdgeDCY= 1.0f / edgeDensityCenterY;
00232         <font class="comment">// for all instances</font>
00233         <font class="keywordflow">for</font>(i=0; i&lt;(sint)instances.size(); i++)
00234         {
00235                 <font class="keywordtype">float</font>           <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>= instances[i].x;
00236                 <font class="keywordtype">float</font>           <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>= instances[i].y;
00237                 <font class="comment">// a seed for random.</font>
00238                 CVector         randSeed(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>*evenDistribFact, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>*evenDistribFact, 0);
00239 
00240                 <font class="comment">// X change.</font>
00241                 <font class="keywordflow">if</font>(middleX)
00242                 {
00243                         <font class="comment">// instances are grouped at middle. this is the bijection of easeInEaseOut</font>
00244                         <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>= <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> - <a class="code" href="classNL3D_1_1CVegetable.html#f0">easeInEaseOut</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>);
00245                         <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>= <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> - <a class="code" href="classNL3D_1_1CVegetable.html#f0">easeInEaseOut</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>);
00246                         instances[i].x= <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>;
00247                 }
00248                 <font class="keywordflow">else</font>
00249                 {
00250                         <font class="comment">// Swap X, randomly. swap more on border</font>
00251                         <font class="comment">// evaluate the density in X direction we have at this point.</font>
00252                         <font class="keywordtype">float</font>   densX= edgeDensity[0]*(1-<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>) + edgeDensity[1]* <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> ;
00253                         <font class="comment">// If on the side of the lowest density</font>
00254                         <font class="keywordflow">if</font>(densX &lt; edgeDensityCenterX)
00255                         {
00256                                 <font class="comment">// may swap the position </font>
00257                                 <font class="keywordtype">float</font>   rdSwap= (densX * OOEdgeDCX );
00258                                 <font class="comment">// (densX * OOEdgeDCX) E [0..1[. The more it is near 0, the more is has chance to be swapped.</font>
00259                                 rdSwap+= <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>.evalOneLevelRandom( randSeed );
00260                                 <font class="keywordflow">if</font>(rdSwap&lt;1)
00261                                         instances[i].x= 1 - instances[i].x;
00262                         }
00263                 }
00264 
00265                 <font class="comment">// Y change.</font>
00266                 <font class="keywordflow">if</font>(middleY)
00267                 {
00268                         <font class="comment">// instances are grouped at middle. this is the bijection of easeInEaseOut</font>
00269                         <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>= <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> - <a class="code" href="classNL3D_1_1CVegetable.html#f0">easeInEaseOut</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>);
00270                         <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>= <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>+<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> - <a class="code" href="classNL3D_1_1CVegetable.html#f0">easeInEaseOut</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>);
00271                         instances[i].y= <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>;
00272                 }
00273                 <font class="keywordflow">else</font>
00274                 {
00275                         <font class="comment">// Swap Y, randomly. swap more on border</font>
00276                         <font class="comment">// evaluate the density in Y direction we have at this point.</font>
00277                         <font class="keywordtype">float</font>   densY= edgeDensity[2]*(1-<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>) + edgeDensity[3]* <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> ;
00278                         <font class="comment">// If on the side of the lowest density</font>
00279                         <font class="keywordflow">if</font>(densY &lt; edgeDensityCenterY)
00280                         {
00281                                 <font class="comment">// may swap the position </font>
00282                                 <font class="keywordtype">float</font>   rdSwap= (densY * OOEdgeDCY);
00283                                 <font class="comment">// (densY * OOEdgeDCY) E [0..1[. The more it is near 0, the more is has chance to be swapped.</font>
00284                                 rdSwap+= <a class="code" href="namespaceNL3D.html#a472">RandomGenerator</a>.evalOneLevelRandom( randSeed );
00285                                 <font class="keywordflow">if</font>(rdSwap&lt;1)
00286                                         instances[i].y= 1 - instances[i].y;
00287                         }
00288                 }
00289 
00290         }
00291 
00292 }
00293 
00294 
00295 <font class="comment">// ***************************************************************************</font>
<a name="l00296"></a><a class="code" href="classNL3D_1_1CVegetable.html#a4">00296</a> <font class="keywordtype">void</font>    CVegetable::reserveIgAddInstances(CVegetableInstanceGroupReserve &amp;vegetIgReserve, TVegetableWater vegetWaterState, uint numInstances)<font class="keyword"> const</font>
00297 <font class="keyword"></font>{
00298         <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>);
00299 
00300         <font class="keywordflow">if</font> (_VegetableShape)
00301                 <a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>-&gt;reserveIgAddInstances(vegetIgReserve, <a class="code" href="classNL3D_1_1CVegetable.html#o6">_VegetableShape</a>, (CVegetableManager::TVegetableWater)vegetWaterState, numInstances);
00302 }
00303 
00304 
00305 <font class="comment">// ***************************************************************************</font>
<a name="l00306"></a><a class="code" href="classNL3D_1_1CVegetable.html#a5">00306</a> <font class="keywordtype">void</font>    CVegetable::generateInstance(CVegetableInstanceGroup *ig, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &amp;posInWorld, 
00307                 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CRGBAF.html">NLMISC::CRGBAF</a> &amp;modulateAmbientColor, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CRGBAF.html">NLMISC::CRGBAF</a> &amp;modulateDiffuseColor, <font class="keywordtype">float</font> blendDistMax,
00308                 TVegetableWater vegetWaterState, CVegetableUV8 dlmUV)<font class="keyword"> const</font>
00309 <font class="keyword"></font>{
00310         <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>);
00311 
00312 
00313         CVector         seed= posInWorld.<a class="code" href="classNLMISC_1_1CMatrix.html#z291_4">getPos</a>();
00314 
00315         <font class="comment">// Generate Matrix.</font>
00316         <font class="comment">// ===============</font>
00317 
00318         <font class="comment">// Generate a random Scale / Rotation matrix.</font>
00319         CMatrix         randomMat;
00320         <font class="comment">// setup rotation</font>
00321         CVector         rot;
00322         rot.x= <a class="code" href="classNL3D_1_1CVegetable.html#m5">Rx</a>.eval(seed);
00323         rot.y= <a class="code" href="classNL3D_1_1CVegetable.html#m6">Ry</a>.eval(seed);
00324         rot.z= <a class="code" href="classNL3D_1_1CVegetable.html#m7">Rz</a>.eval(seed);
00325         randomMat.setRot(rot, CMatrix::ZXY);
00326         <font class="comment">// scale.</font>
00327         <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>.Abs!=0 || <a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>.Rand!=0 || <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>.Abs!=0 || <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>.Rand!=0)
00328         {
00329                 CVector         scale;
00330                 scale.x= scale.y= <a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>.eval(seed);
00331                 scale.z= <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>.eval(seed);
00332                 randomMat.scale(scale);
00333         }
00334 
00335         <font class="comment">// Final Matrix.</font>
00336         CMatrix         finalMatrix;
00337         finalMatrix= posInWorld * randomMat;
00338 
00339         <font class="comment">// Generate Color and factor</font>
00340         <font class="comment">// ===============</font>
00341         CRGBAF          materialColor(1,1,1,1);
00342         <font class="comment">// evaluate gradients. If none, color not modified.</font>
00343         <a class="code" href="classNL3D_1_1CVegetable.html#m11">Color</a>.eval(seed, materialColor);
00344         <font class="comment">// modulate with user</font>
00345         CRGBAF          ambient, diffuse;
00346         ambient= modulateAmbientColor * materialColor;
00347         diffuse= modulateDiffuseColor * materialColor;
00348 
00349         <font class="comment">// Generate a bendFactor</font>
00350         <font class="keywordtype">float</font>   bendFactor= <a class="code" href="classNL3D_1_1CVegetable.html#m8">BendFactor</a>.eval(seed);
00351         <font class="comment">// Generate a bendPhase</font>
00352         <font class="keywordtype">float</font>   bendPhase= <a class="code" href="classNL3D_1_1CVegetable.html#m9">BendPhase</a>.eval(seed);
00353 
00354 
00355         <font class="comment">// Append to the vegetableManager</font>
00356         <font class="comment">// ===============</font>
00357         <font class="keywordflow">if</font> (_VegetableShape)
00358         {
00359                 <a class="code" href="classNL3D_1_1CVegetable.html#o5">_Manager</a>-&gt;addInstance(ig, <a class="code" href="classNL3D_1_1CVegetable.html#o6">_VegetableShape</a>, finalMatrix, ambient, diffuse, 
00360                         bendFactor, bendPhase, <a class="code" href="classNL3D_1_1CVegetable.html#m10">BendFrequencyFactor</a>, blendDistMax, 
00361                         (CVegetableManager::TVegetableWater)vegetWaterState, dlmUV);
00362         }
00363 }
00364 
00365 
00366 <font class="comment">// ***************************************************************************</font>
<a name="l00367"></a><a class="code" href="classNL3D_1_1CVegetable.html#a6">00367</a> <font class="keywordtype">void</font>    CVegetable::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &amp;f)
00368 {
00369         <font class="comment">/*</font>
00370 <font class="comment">        Version 1:</font>
00371 <font class="comment">                - add BendFrequencyFactor</font>
00372 <font class="comment">        Version 0:</font>
00373 <font class="comment">                - base version</font>
00374 <font class="comment">        */</font>
00375         sint    ver= f.<a class="code" href="classNLMISC_1_1IStream.html#a29">serialVersion</a>(1);
00376 
00377         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m0">ShapeName</a>);
00378         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m1">Density</a>);
00379         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m2">MaxDensity</a>);
00380         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#o0">_CosAngleMin</a>, <a class="code" href="classNL3D_1_1CVegetable.html#o1">_CosAngleMax</a>, <a class="code" href="classNL3D_1_1CVegetable.html#o2">_CosAngleMiddle</a>, <a class="code" href="classNL3D_1_1CVegetable.html#o3">_OOCosAngleDist</a>);
00381         f.<a class="code" href="classNLMISC_1_1IStream.html#a6">serialEnum</a>(<a class="code" href="classNL3D_1_1CVegetable.html#o4">_AngleType</a>);
00382         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m3">Sxy</a>, <a class="code" href="classNL3D_1_1CVegetable.html#m4">Sz</a>);
00383         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m5">Rx</a>, <a class="code" href="classNL3D_1_1CVegetable.html#m6">Ry</a>, <a class="code" href="classNL3D_1_1CVegetable.html#m7">Rz</a>);
00384         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m8">BendFactor</a>);
00385         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m9">BendPhase</a>);
00386         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m11">Color</a>);
00387         f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m12">DistType</a>);
00388 
00389         <font class="keywordflow">if</font>(ver&gt;=1)
00390                 f.<a class="code" href="classNLMISC_1_1IStream.html#a5">serial</a>(<a class="code" href="classNL3D_1_1CVegetable.html#m10">BendFrequencyFactor</a>);
00391         <font class="keywordflow">else</font>
00392                 <a class="code" href="classNL3D_1_1CVegetable.html#m10">BendFrequencyFactor</a>= 1;
00393 }
00394 
00395 
00396 } <font class="comment">// NL3D</font>
</pre></div>

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