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authorneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
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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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