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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<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> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |