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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_float.cpp</h1><a href="ps__float_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font> +00008 <font class="comment"> *</font> +00009 <font class="comment"> * This file is part of NEVRAX NEL.</font> +00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font> +00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font> +00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font> +00013 <font class="comment"> * any later version.</font> +00014 <font class="comment"></font> +00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font> +00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font> +00018 <font class="comment"> * General Public License for more details.</font> +00019 <font class="comment"></font> +00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font> +00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font> +00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font> +00023 <font class="comment"> * MA 02111-1307, USA.</font> +00024 <font class="comment"> */</font> +00025 +00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font> +00027 +00028 <font class="preprocessor">#include "<a class="code" href="ps__float_8h.html">3d/ps_float.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="ps__register__float__attribs_8h.html">3d/ps_register_float_attribs.h</a>"</font> +00030 <font class="preprocessor">#include "<a class="code" href="fast__floor_8h.html">3d/fast_floor.h</a>"</font> +00031 +00032 <font class="keyword">namespace </font>NL3D { +00033 +00034 +00035 +00036 +00037 +<a name="l00038"></a><a class="code" href="classNL3D_1_1CPSFloatGradient.html#p0">00038</a> <font class="keywordtype">float</font> CPSFloatGradient::_DefaultGradient[] = { 0.1f, 1.0f } ; +00039 +00040 +00042 <font class="comment">// CPSFloatGradient implementation //</font> +00044 <font class="comment"></font> +<a name="l00045"></a><a class="code" href="classNL3D_1_1CPSFloatGradient.html#a1">00045</a> CPSFloatGradient::CPSFloatGradient(<font class="keyword">const</font> <font class="keywordtype">float</font> *floatTab, uint32 nbValues, uint32 nbStages, <font class="keywordtype">float</font> nbCycles) +00046 : CPSValueGradient<float>(nbCycles) +00047 { +00048 <a class="code" href="classNL3D_1_1CPSAttribMakerT.html#m0">_F</a>.setValues(floatTab, nbValues, nbStages) ; +00049 } +00050 +00051 +00053 <font class="comment">// CPSFloatBezierCurve implementation //</font> +00055 <font class="comment"></font> +<a name="l00056"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a0">00056</a> CPSFloatCurveFunctor::CPSFloatCurveFunctor() : _NumSamples(128), _Smoothing(true) +00057 { +00058 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.push_back(CCtrlPoint(0, 0.5f)); +00059 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.push_back(CCtrlPoint(1, 0.5f)); +00060 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00061 } +00062 +<a name="l00064"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b1">00064</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::sortPoints(<font class="keywordtype">void</font>) +00065 { +00066 std::sort(<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.begin(), <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.end()); +00067 } +00068 +<a name="l00070"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a1">00070</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::addControlPoint(<font class="keyword">const</font> CCtrlPoint &ctrlPoint) +00071 { +00072 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.push_back(ctrlPoint); +00073 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b1">sortPoints</a>(); +00074 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00075 } +00076 +<a name="l00078"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a3">00078</a> <font class="keyword">const</font> CPSFloatCurveFunctor::CCtrlPoint &CPSFloatCurveFunctor::getControlPoint(uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>)<font class="keyword"> const</font> +00079 <font class="keyword"></font>{ +00080 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>]; +00081 } +00082 +<a name="l00084"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a4">00084</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::setCtrlPoint(uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>, <font class="keyword">const</font> CCtrlPoint &ctrlPoint) +00085 { +00086 <a class="code" href="debug_8h.html#a6">nlassert</a>(ctrlPoint.Date >= 0 && ctrlPoint.Date <= 1); +00087 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>] = ctrlPoint; +00088 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b1">sortPoints</a>(); +00089 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00090 } +00091 +<a name="l00093"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a5">00093</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::removeCtrlPoint(uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>) +00094 { +00095 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.size() > 1); +00096 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.erase(<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.begin() + <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>); +00097 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00098 } +00099 +<a name="l00101"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a6">00101</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::setNumSamples(uint32 numSamples) +00102 { +00103 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples > 0); +00104 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n1">_NumSamples</a> = numSamples; +00105 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00106 } +00107 +<a name="l00109"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a11">00109</a> <font class="keywordtype">float</font> CPSFloatCurveFunctor::getValue(<font class="keywordtype">float</font> date)<font class="keyword"> const</font> +00110 <font class="keyword"></font>{ +00111 <a class="code" href="namespaceNLMISC.html#a215">NLMISC::clamp</a>(date, 0, 1); +00112 <font class="comment">// find a key that has a higher value</font> +00113 std::vector<CCtrlPoint>::const_iterator it = <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.begin(); +00114 <font class="keywordflow">while</font> ( it != <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.end() && it->Date <= date ) ++it; +00115 +00116 <font class="keywordflow">if</font> (it == <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.begin()) <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[0].Value; +00117 <font class="keywordflow">if</font> (it == <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.end()) <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.size() - 1].Value; +00118 std::vector<CCtrlPoint>::const_iterator precIt = it - 1; +00119 <font class="keywordflow">if</font> (precIt->Date == it->Date) <font class="keywordflow">return</font> 0.5f * (precIt->Value + it->Value); +00120 <font class="keyword">const</font> <font class="keywordtype">float</font> lambda = (date - precIt->Date) / (it->Date - precIt->Date); +00121 <font class="keywordflow">if</font> (!<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n3">_Smoothing</a>) <font class="comment">// linear interpolation</font> +00122 { +00123 <font class="keywordflow">return</font> lambda * it->Value + (1.f - lambda) * precIt->Value; +00124 } +00125 <font class="keywordflow">else</font> <font class="comment">// hermite interpolation</font> +00126 { +00127 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a> = it->Date - precIt->Date; +00128 uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> = precIt - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.begin(); +00129 <font class="keywordtype">float</font> t1 = <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b0">getSlope</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>) * <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>, t2 = <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b0">getSlope</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> + 1) * <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>; +00130 <font class="keyword">const</font> <font class="keywordtype">float</font> lambda2 = <a class="code" href="namespaceNLMISC.html#a214">NLMISC::sqr</a>(lambda); +00131 <font class="keyword">const</font> <font class="keywordtype">float</font> lambda3 = lambda2 * lambda; +00132 <font class="keyword">const</font> <font class="keywordtype">float</font> h1 = 2 * lambda3 - 3 * lambda2 + 1; +00133 <font class="keyword">const</font> <font class="keywordtype">float</font> h2 = - 2 * lambda3 + 3 * lambda2; +00134 <font class="keyword">const</font> <font class="keywordtype">float</font> h3 = lambda3 - 2 * lambda2 + lambda; +00135 <font class="keyword">const</font> <font class="keywordtype">float</font> h4 = lambda3 - lambda2; +00136 +00137 <font class="keywordflow">return</font> h1 * precIt->Value + h2 * it->Value + h3 * t1 + h4 * t2; +00138 } +00139 } +00140 +<a name="l00142"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">00142</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::updateTab(<font class="keywordtype">void</font>) +00143 { +00144 <font class="keywordtype">float</font> step = 1.f / <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n1">_NumSamples</a>; +00145 <font class="keywordtype">float</font> d = 0.f; +00146 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n2">_Tab</a>.resize(<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n1">_NumSamples</a> + 1); +00147 <font class="keywordflow">for</font> (uint k = 0; k <= <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n1">_NumSamples</a>; ++k) +00148 { +00149 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n2">_Tab</a>[k] = <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a11">getValue</a>(d); +00150 d += step; +00151 } +00152 } +00153 +<a name="l00155"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a12">00155</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &f) <font class="keywordflow">throw</font>(NLMISC::EStream) +00156 { +00157 f.serialVersion(1); +00158 f.serial(_NumSamples, _Smoothing); +00159 f.serialCont(_CtrlPoints); +00160 <font class="keywordflow">if</font> (f.isReading()) +00161 { +00162 updateTab(); +00163 } +00164 } +00165 +<a name="l00167"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b0">00167</a> <font class="keywordtype">float</font> CPSFloatCurveFunctor::getSlope(uint <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>)<font class="keyword"> const</font> +00168 <font class="keyword"></font>{ +00169 <font class="comment">// tangent for first point</font> +00170 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> == 0) +00171 { +00172 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[1].Date != <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[0].Date ? (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[1].Value - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[0].Value) +00173 / (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[1].Date - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[0].Date) +00174 : 1e6f; +00175 } +00176 +00177 <font class="comment">// tangent for last point</font> +00178 <font class="keywordflow">if</font> (<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> == <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>.size() - 1) +00179 { +00180 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>].Date != <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Date ? (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>].Value - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Value) +00181 / (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>].Date - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Date) +00182 : 1e6f; +00183 } +00184 +00185 <font class="comment">// tangent for other points</font> +00186 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> + 1].Date != <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Date ? (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> + 1].Value - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Value) +00187 / (<a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> + 1].Date - <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n0">_CtrlPoints</a>[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a> - 1].Date) +00188 : 1e6f; +00189 } +00190 +<a name="l00192"></a><a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#a8">00192</a> <font class="keywordtype">void</font> CPSFloatCurveFunctor::enableSmoothing(<font class="keywordtype">bool</font> enable <font class="comment">/* = true*/</font>) +00193 { +00194 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#n3">_Smoothing</a> = enable; +00195 <a class="code" href="classNL3D_1_1CPSFloatCurveFunctor.html#b2">updateTab</a>(); +00196 } +00197 +00199 <font class="keywordtype">void</font> <a class="code" href="namespaceNL3D.html#a423">PSRegisterFloatAttribs</a>() +00200 { +00201 <a class="code" href="class__registry_8h.html#a1">NLMISC_REGISTER_CLASS</a>(CPSFloatBlender); +00202 <a class="code" href="class__registry_8h.html#a1">NLMISC_REGISTER_CLASS</a>(CPSFloatGradient); +00203 <a class="code" href="class__registry_8h.html#a1">NLMISC_REGISTER_CLASS</a>(CPSFloatMemory); +00204 <a class="code" href="class__registry_8h.html#a1">NLMISC_REGISTER_CLASS</a>(CPSFloatBinOp); +00205 <a class="code" href="class__registry_8h.html#a1">NLMISC_REGISTER_CLASS</a>(CPSFloatCurve); +00206 } +00207 +00208 } <font class="comment">// NL3D</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> |