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<hr><h1>ps_util.h</h1><a href="ps__util_8h.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">#ifndef NL_PS_UTIL_H</font>
00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_PS_UTIL_H</font>
00028 <font class="preprocessor"></font>
00029 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="aabbox_8h.html">nel/misc/aabbox.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="vector_8h.html">nel/misc/vector.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="rgba_8h.html">nel/misc/rgba.h</a>"</font>
00033
00034
00035
00036 <font class="keyword">namespace </font>NLMISC
00037 {
00038 <font class="keyword">class </font>CMatrix;
00039 <font class="keyword">class </font>NLMISC::CVector;
00040 };
00041
00042 namespace NL3D
00043 {
00044
00045
00046 <font class="keyword">class </font>CFontGenerator;
00047 <font class="keyword">class </font>CFontManager;
00048 <font class="keyword">class </font>IDriver;
00049
00050
<a name="l00057"></a><a class="code" href="structNL3D_1_1CPSUtil.html">00057</a> <font class="keyword">struct </font>CPSUtil
00058 {
00059 <font class="keyword">public</font>:
00061
00062 <font class="keyword">static</font> <font class="keywordtype">void</font> registerSerialParticleSystem(<font class="keywordtype">void</font>);
00063
00065
00066 <font class="keyword">static</font> <font class="keywordtype">void</font> displayBBox(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> *driver, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CAABBox.html">NLMISC::CAABBox</a> &box, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> col = <a class="code" href="classNLMISC_1_1CRGBA.html#p7">NLMISC::CRGBA::White</a>);
00067
00069 <font class="keyword">static</font> <font class="keywordtype">void</font> displaySphere(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> &driver, <font class="keywordtype">float</font> radius, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &center, uint nbSubdiv = 4, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> color = <a class="code" href="classNLMISC_1_1CRGBA.html#p7">NLMISC::CRGBA::White</a>);
00070
00071
00075 <font class="keyword">static</font> <font class="keywordtype">void</font> displayDisc(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> &driver, <font class="keywordtype">float</font> radius, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &center, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &mat, uint nbSubdiv = 32, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> color = <a class="code" href="classNLMISC_1_1CRGBA.html#p7">NLMISC::CRGBA::White</a>);
00076
00077
00081 <font class="keyword">static</font> <font class="keywordtype">void</font> displayCylinder(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> &driver, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &center, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &mat, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &dim, uint nbSubdiv = 32, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> color = <a class="code" href="classNLMISC_1_1CRGBA.html#p7">NLMISC::CRGBA::White</a>);
00082
00084 <font class="keyword">static</font> <font class="keywordtype">void</font> display3DQuad(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> &driver, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &c1, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &c2
00085 ,<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &c3, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &c4, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> color = <a class="code" href="classNLMISC_1_1CRGBA.html#p7">NLMISC::CRGBA::White</a>);
00086
00087
00089 <font class="keyword">inline</font> <font class="keyword">static</font> <font class="keywordtype">void</font> addRadiusToAABBox(<a class="code" href="classNLMISC_1_1CAABBox.html">NLMISC::CAABBox</a> &box, <font class="keywordtype">float</font> radius);
00090
00092 <font class="keyword">static</font> <font class="keywordtype">void</font> displayBasis(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> *driver, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &modelMat, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &m, <font class="keywordtype">float</font> size, CFontGenerator &fg, CFontManager &fm);
00093
00094
00105 <font class="keyword">static</font> <font class="keywordtype">void</font> displayArrow(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> *driver, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &start, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &<a class="code" href="driver__opengl__extension__def_8h.html#a368">v</a>, <font class="keywordtype">float</font> size, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> col1, <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> col2);
00106
00108 <font class="keyword">static</font> <font class="keywordtype">void</font> print(<a class="code" href="classNL3D_1_1IDriver.html">NL3D::IDriver</a> *driver, <font class="keyword">const</font> std::string &text, CFontGenerator &fg, CFontManager &fm, <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pos, <font class="keywordtype">float</font> size);
00109
00110
00115 <font class="keyword">static</font> <font class="keywordtype">void</font> buildSchmidtBasis(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &v, <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &dest);
00116
00117
<a name="l00121"></a><a class="code" href="structNL3D_1_1CPSUtil.html#d11">00121</a> <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">float</font> getCos(sint32 angle)
00122 {
00123 <a class="code" href="debug_8h.html#a6">nlassert</a>(_CosTableInitialized == <font class="keyword">true</font>);
00124 <font class="keywordflow">return</font> _CosTable[angle & 0xff];
00125 }
00126
<a name="l00130"></a><a class="code" href="structNL3D_1_1CPSUtil.html#d12">00130</a> <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">float</font> getSin(sint32 angle)
00131 {
00132 <a class="code" href="debug_8h.html#a6">nlassert</a>(_CosTableInitialized == <font class="keyword">true</font>);
00133 <font class="keywordflow">return</font> _SinTable[angle & 0xff];
00134 }
00135
00139 <font class="keyword">static</font> <font class="keywordtype">void</font> initFastCosNSinTable(<font class="keywordtype">void</font>);
00140
00141
00146 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">float</font> buildPerlinNoise(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pos, uint nbOctaves);
00147
00151 <font class="keyword">static</font> <font class="keywordtype">void</font> initPerlinNoiseTable(<font class="keywordtype">void</font>);
00152
00153
00154 <font class="keyword">private</font>:
00155 <font class="keyword">static</font> <font class="keywordtype">void</font> registerForces();
00156 <font class="keyword">static</font> <font class="keywordtype">void</font> registerParticles();
00157 <font class="keyword">static</font> <font class="keywordtype">void</font> registerEmitters();
00158 <font class="keyword">static</font> <font class="keywordtype">void</font> registerZones();
00159 <font class="keyword">static</font> <font class="keywordtype">void</font> registerAttribs();
00160
00161 <font class="keyword">static</font> <font class="keywordtype">bool</font> _CosTableInitialized;
00162 <font class="keyword">static</font> <font class="keywordtype">bool</font> _PerlinNoiseTableInitialized;
00163 <font class="comment">// a table for fast cosine lookup</font>
00164 <font class="keyword">static</font> <font class="keywordtype">float</font> _CosTable[256];
00165 <font class="comment">// a table for fast sinus lookup</font>
00166 <font class="keyword">static</font> <font class="keywordtype">float</font> _SinTable[256];
00167 <font class="keyword">static</font> <font class="keywordtype">float</font> _PerlinNoiseTab[1024];
00168 <font class="comment">// used by perlin noise to compute each octave </font>
00169 <font class="keyword">static</font> <font class="keywordtype">float</font> getInterpolatedNoise(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pos);
00170 <font class="comment">// get non interpolated noise </font>
00171 <font class="keyword">static</font> <font class="keywordtype">float</font> getPerlinNoise(uint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>);
00172 };
00173
00175 <font class="comment">// inline implementation //</font>
00177 <font class="comment"></font>
<a name="l00178"></a><a class="code" href="structNL3D_1_1CPSUtil.html#d6">00178</a> <font class="keyword">inline</font> <font class="keywordtype">void</font> CPSUtil::addRadiusToAABBox(<a class="code" href="classNLMISC_1_1CAABBox.html">NLMISC::CAABBox</a> &box, <font class="keywordtype">float</font> radius)
00179 {
00180 box.<a class="code" href="classNLMISC_1_1CAABBox.html#z263_1">setHalfSize</a>(box.<a class="code" href="classNLMISC_1_1CAABBox.html#z264_5">getHalfSize</a>() + <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(radius, radius, radius) );
00181 }
00182
00183
00184 <font class="comment">// get non interpolated noise </font>
<a name="l00185"></a><a class="code" href="structNL3D_1_1CPSUtil.html#f6">00185</a> <font class="keyword">inline</font> <font class="keywordtype">float</font> CPSUtil::getPerlinNoise(uint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>)
00186 {
00187 <font class="keywordflow">return</font> <a class="code" href="structNL3D_1_1CPSUtil.html#r4">_PerlinNoiseTab</a>[(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> ^ <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> ^ <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>) & 1023];
00188 }
00189
00190
<a name="l00191"></a><a class="code" href="structNL3D_1_1CPSUtil.html#f5">00191</a> <font class="keyword">inline</font> <font class="keywordtype">float</font> CPSUtil::getInterpolatedNoise(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pos)
00192 {
00193 uint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> = (uint) pos.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>
00194 , <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> = (uint) pos.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>
00195 , <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a> = (uint) pos.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>;
00196
00197 <font class="comment">// we want to avoid costly ctor call there...</font>
00198 <font class="keywordtype">float</font> fx = pos.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> - <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>
00199 , fy = pos.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> - <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>
00200 , fz = pos.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> - <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>;
00201
00202 <font class="comment">// we use the following topology to get the value :</font>
00203 <font class="comment">//</font>
00204 <font class="comment">//</font>
00205 <font class="comment">// z</font>
00206 <font class="comment">// | 7-----6</font>
00207 <font class="comment">// / /</font>
00208 <font class="comment">// 4-----5 |</font>
00209 <font class="comment">// | | |</font>
00210 <font class="comment">// | 3 | |2</font>
00211 <font class="comment">// | | /</font>
00212 <font class="comment">// 0_____1/__x</font>
00213
00214
00215 <font class="keyword">const</font> <font class="keywordtype">float</font> v0 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>)
00216 ,v1 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>)
00217 ,v2 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>)
00218 ,v3 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a>)
00219 ,v4 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a> + 1)
00220 ,v5 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a> + 1)
00221 ,v6 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a> + 1)
00222 ,v7 = <a class="code" href="structNL3D_1_1CPSUtil.html#f6">getPerlinNoise</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> + 1, <a class="code" href="driver__opengl__extension__def_8h.html#a366">z</a> + 1);
00223
00224
00225 <font class="keyword">const</font> <font class="keywordtype">float</font> h1 = fx * v1 + (1.f - fx) * v0
00226 ,h2 = fx * v3 + (1.f - fx) * v2
00227 ,h3 = fx * v5 + (1.f - fx) * v4
00228 ,h4 = fx * v7 + (1.f - fx )* v6;
00229
00230 <font class="keyword">const</font> <font class="keywordtype">float</font> c1 = fy * h2 + (1.f - fy) * h1
00231 ,c2 = fy * h4 + (1.f - fy) * h3;
00232
00233 <font class="keywordflow">return</font> fz * c2 + (1.f - fz) * c1;
00234 }
00235
00236
<a name="l00237"></a><a class="code" href="structNL3D_1_1CPSUtil.html#d14">00237</a> <font class="keyword">inline</font> <font class="keywordtype">float</font> CPSUtil::buildPerlinNoise(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &pos, uint numOctaves)
00238 {
00239 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="structNL3D_1_1CPSUtil.html#r1">_PerlinNoiseTableInitialized</a>);
00240
00241 <font class="keywordtype">float</font> result = 0;
00242 <font class="keywordtype">float</font> fact = .5f;
00243 <font class="keywordtype">float</font> scale = 1.f;
00244
00245 <font class="keywordflow">for</font> (uint k = 0; k < numOctaves; k++)
00246 {
00247 result += fact * <a class="code" href="structNL3D_1_1CPSUtil.html#f5">getInterpolatedNoise</a>(scale * pos);
00248 fact *= .5f;
00249 scale *= 1.2537f;
00250 }
00251 <font class="keywordflow">return</font> result;
00252 }
00253
00254
00255
00256
00257
00258
00259 } <font class="comment">// NL3D</font>
00260
00261
00262 <font class="preprocessor">#endif // NL_PS_UTIL_H</font>
00263 <font class="preprocessor"></font>
00264 <font class="comment">/* End of ps_util.h */</font>
</pre></div>
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