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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_ribbon_look_at.cpp</h1><a href="ps__ribbon__look__at_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__ribbon__look__at_8h.html">3d/ps_ribbon_look_at.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="particle__system_8h.html">3d/particle_system.h</a>"</font> +00030 <font class="preprocessor">#include "<a class="code" href="ps__macro_8h.html">3d/ps_macro.h</a>"</font> +00031 <font class="preprocessor">#include "<a class="code" href="driver_8h.html">3d/driver.h</a>"</font> +00032 +00033 <font class="keyword">namespace </font>NL3D +00034 { +00035 +00037 <font class="comment">// CPSRibbonLookAt implementation //</font> +00039 <font class="comment"></font> +00040 <font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a> = 10E-3f; +00041 <font class="keyword">const</font> <font class="keywordtype">float</font> <a class="code" href="namespaceNL3D.html#a217">NormEpsilon</a> = 10E-8f; +00042 +00043 +<a name="l00044"></a><a class="code" href="structNL3D_1_1CVectInfo.html">00044</a> <font class="keyword">struct </font>CVectInfo +00045 { +<a name="l00046"></a><a class="code" href="structNL3D_1_1CVectInfo.html#m0">00046</a> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> <a class="code" href="structNL3D_1_1CVectInfo.html#m0">Interp</a>; +<a name="l00047"></a><a class="code" href="structNL3D_1_1CVectInfo.html#m1">00047</a> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> <a class="code" href="structNL3D_1_1CVectInfo.html#m1">Proj</a>; +00048 }; +00049 <font class="keyword">typedef</font> std::vector<CVectInfo> <a class="code" href="namespaceNL3D.html#a218">TRibbonVect</a>; <font class="comment">// a vector used for intermediate computations</font> +00050 +<a name="l00051"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_3">00051</a> CPSRibbonLookAt::TVBMap CPSRibbonLookAt::_VBMap; <font class="comment">// index buffers with no color</font> +<a name="l00052"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_4">00052</a> CPSRibbonLookAt::TVBMap CPSRibbonLookAt::_ColoredVBMap; <font class="comment">// index buffer + colors </font> +00053 +00054 <font class="comment">//======================================================= </font> +<a name="l00055"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z731_0">00055</a> CPSRibbonLookAt::CPSRibbonLookAt() +00056 { +00057 } +00058 +00059 <font class="comment">//======================================================= </font> +<a name="l00060"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z731_1">00060</a> CPSRibbonLookAt::~CPSRibbonLookAt() +00061 { +00062 <font class="comment">// delete _DyingRibbons;</font> +00063 } +00064 +00065 <font class="comment">//======================================================= </font> +<a name="l00066"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z731_2">00066</a> <font class="keywordtype">void</font> CPSRibbonLookAt::serial(<a class="code" href="classNLMISC_1_1IStream.html">NLMISC::IStream</a> &f) <font class="keywordflow">throw</font>(NLMISC::EStream) +00067 { +00071 sint ver = f.serialVersion(4); +00072 <font class="keywordflow">if</font> (ver > 3) +00073 { +00074 CPSRibbonBase::serial(f); +00075 } +00076 <font class="keywordflow">else</font> +00077 { +00078 CPSParticle::serial(f); +00079 } +00080 CPSColoredParticle::serialColorScheme(f); +00081 CPSSizedParticle::serialSizeScheme(f); +00082 serialMaterial(f); +00083 uint32 dummy = 0; <font class="comment">/* _NbDyingRibbons */</font> +00084 <font class="keywordflow">if</font> (ver <= 3) +00085 { +00086 f.serial(_SegDuration, _NbSegs, dummy <font class="comment">/*_NbDyingRibbons*/</font>); +00087 } +00088 ITexture *tex = NULL; +00089 +00090 <font class="keywordflow">if</font> (ver > 2) +00091 { +00092 f.serial(_Parametric); +00093 } +00094 +00095 +00096 <font class="keywordflow">if</font> (!f.isReading()) +00097 { +00098 tex = _Tex; +00099 f.serialPolyPtr(tex); +00100 } +00101 <font class="keywordflow">else</font> +00102 { +00103 f.serialPolyPtr(tex); +00104 setTexture(tex); +00105 setTailNbSeg(_NbSegs); <font class="comment">// force to build the vb</font> +00106 } +00107 } +00108 +00109 +00110 <font class="comment">//======================================================= </font> +<a name="l00111"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z732_0">00111</a> <font class="keywordtype">void</font> CPSRibbonLookAt::setTexture(CSmartPtr<ITexture> tex) +00112 { +00113 <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#n0">_Tex</a> = tex; +00114 <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#c0">updateMatAndVbForColor</a>(); +00115 } +00116 +00117 +00118 <font class="comment">//======================================================= </font> +<a name="l00119"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a0">00119</a> <font class="keywordtype">void</font> CPSRibbonLookAt::step(<a class="code" href="namespaceNL3D.html#a484">TPSProcessPass</a> pass, <a class="code" href="namespaceNL3D.html#a1">TAnimationTime</a> ellapsedTime, <a class="code" href="namespaceNL3D.html#a1">TAnimationTime</a> realEt) +00120 { +00121 <font class="keywordflow">if</font> (pass == <a class="code" href="namespaceNL3D.html#a484a168">PSMotion</a>) +00122 { +00123 <font class="keywordflow">if</font> (!<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n2">_Parametric</a>) +00124 { +00125 <a class="code" href="classNL3D_1_1CPSRibbonBase.html#b5">updateGlobals</a>(); +00126 } +00127 } +00128 <font class="keywordflow">else</font> +00129 <font class="keywordflow">if</font> ( +00130 (pass == <a class="code" href="namespaceNL3D.html#a484a170">PSBlendRender</a> && <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a1">hasTransparentFaces</a>()) +00131 || (pass == <a class="code" href="namespaceNL3D.html#a484a169">PSSolidRender</a> && <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a2">hasOpaqueFaces</a>()) +00132 ) +00133 { +00134 uint32 <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a0">step</a>; +00135 uint numToProcess; +00136 <a class="code" href="classNL3D_1_1CPSParticle.html#b4">computeSrcStep</a>(<a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a0">step</a>, numToProcess); +00137 <font class="keywordflow">if</font> (!numToProcess) <font class="keywordflow">return</font>; +00138 +00140 CParticleSystem &ps = *(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->getOwner()); +00141 <a class="code" href="classNL3D_1_1CPSMaterial.html#n0">_Mat</a>.setColor(ps.getGlobalColor()); +00142 +00147 <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#c1">displayRibbons</a>(numToProcess, <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a0">step</a>); +00148 +00149 } +00150 <font class="keywordflow">else</font> +00151 <font class="keywordflow">if</font> (pass == <a class="code" href="namespaceNL3D.html#a484a171">PSToolRender</a>) <font class="comment">// edition mode only</font> +00152 { +00153 <font class="comment">//showTool();</font> +00154 } +00155 } +00156 +00157 +00158 <font class="comment">//======================================================= </font> +<a name="l00159"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#b0">00159</a> <font class="keywordtype">void</font> CPSRibbonLookAt::newElement(CPSLocated *emitterLocated, uint32 emitterIndex) +00160 { +00161 CPSRibbonBase::newElement(emitterLocated, emitterIndex); +00162 <a class="code" href="classNL3D_1_1CPSColoredParticle.html#b2">newColorElement</a>(emitterLocated, emitterIndex); +00163 <a class="code" href="classNL3D_1_1CPSSizedParticle.html#b1">newSizeElement</a>(emitterLocated, emitterIndex); +00164 } +00165 +00166 +00167 <font class="comment">//======================================================= </font> +<a name="l00168"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#b1">00168</a> <font class="keywordtype">void</font> CPSRibbonLookAt::deleteElement(uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>) +00169 { +00170 CPSRibbonBase::deleteElement(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>); +00171 <a class="code" href="classNL3D_1_1CPSColoredParticle.html#b3">deleteColorElement</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>); +00172 <a class="code" href="classNL3D_1_1CPSSizedParticle.html#b2">deleteSizeElement</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>); +00173 } +00174 +00175 +00176 <font class="comment">//======================================================= </font> +<a name="l00177"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#b2">00177</a> <font class="keywordtype">void</font> CPSRibbonLookAt::resize(uint32 size) +00178 { +00179 <a class="code" href="debug_8h.html#a6">nlassert</a>(size < (1 << 16)); +00180 CPSRibbonBase::resize(size); +00181 <a class="code" href="classNL3D_1_1CPSColoredParticle.html#b4">resizeColor</a>(size); +00182 <a class="code" href="classNL3D_1_1CPSSizedParticle.html#b3">resizeSize</a>(size); +00183 } +00184 +00185 <font class="comment">//======================================================= </font> +<a name="l00186"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#c0">00186</a> <font class="keywordtype">void</font> CPSRibbonLookAt::updateMatAndVbForColor(<font class="keywordtype">void</font>) +00187 { +00188 <a class="code" href="classNL3D_1_1CPSMaterial.html#n0">_Mat</a>.setTexture(0, <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#n0">_Tex</a>); +00189 } +00190 +00191 <font class="comment">//======================================================= </font> +00192 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">void</font> <a class="code" href="namespaceNL3D.html#a452">MakeProj</a>(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &dest, <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#a409">src</a>) +00193 { +00194 <font class="keywordflow">if</font> (fabsf(src.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>) > <a class="code" href="namespaceNL3D.html#a217">NormEpsilon</a> * <a class="code" href="namespaceNL3D.html#a217">NormEpsilon</a>) +00195 { +00196 dest.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> = src.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> / src.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>; +00197 dest.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> = src.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> / src.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>; +00198 dest.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> = src.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a>; +00199 } +00200 } +00201 +00202 <font class="keyword">static</font> <font class="keyword">inline</font> <font class="keywordtype">void</font> <a class="code" href="namespaceNL3D.html#a453">BuildSlice</a>(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> &mat, CVertexBuffer &vb, uint8 *currVert, uint32 vertexSize, +00203 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &I, +00204 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &K, +00205 TRibbonVect::iterator pos, +00206 TRibbonVect::iterator prev, +00207 TRibbonVect::iterator next, +00208 <font class="keywordtype">float</font> ribSize) +00210 { +00211 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, currVert); +00212 <a class="code" href="ps__macro_8h.html#a0">CHECK_VERTEX_BUFFER</a>(vb, currVert); +00213 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> tangent; +00214 +00215 <font class="keywordtype">float</font> invTgNorm; <font class="comment">// inverse of the' norm of the projected segment</font> +00216 <font class="keywordtype">float</font> tgNorm; +00217 +00218 <font class="keywordflow">if</font> (prev->Proj.y > <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a> && next->Proj.y > <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a>) <font class="comment">// the 2 points are in front of the camera</font> +00219 { +00220 tangent = next->Proj - prev->Proj; +00221 tangent.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> = 0; +00222 tgNorm = tangent.<a class="code" href="classNLMISC_1_1CVector.html#z331_2">norm</a>(); +00223 <font class="keywordflow">if</font> (fabs(tgNorm) > 10E-8) +00224 { +00225 invTgNorm = 1.f / tgNorm; +00226 } +00227 <font class="keywordflow">else</font> +00228 { +00229 invTgNorm = 1.f; +00230 } +00231 <font class="comment">// build orthogonals vectors to tangent</font> +00232 +00233 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = pos->Interp + ribSize * invTgNorm * (tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K - tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00234 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = pos->Interp + ribSize * invTgNorm * (- tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K + tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00235 } +00236 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (prev->Proj.y > <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a>) <font class="comment">// second point cross the near plane</font> +00237 { +00238 <font class="comment">// compute intersection point</font> +00239 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> inter; +00240 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> tInter; +00241 <font class="keywordflow">if</font> (fabsf(prev->Proj.y - next->Proj.y) > <a class="code" href="namespaceNL3D.html#a217">NormEpsilon</a>) +00242 { +00243 <font class="keywordtype">float</font> lambda = (next->Proj.y - <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a>) / (next->Proj.y - prev->Proj.y); +00244 inter = lambda * prev->Interp + (1.f - lambda) * next->Interp; +00245 <a class="code" href="namespaceNL3D.html#a452">MakeProj</a>(tInter, mat * inter); +00246 } +00247 <font class="keywordflow">else</font> <font class="comment">// </font> +00248 { +00249 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = pos->Interp; +00250 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = pos->Interp; +00251 <font class="keywordflow">return</font>; +00252 } +00253 +00254 tangent = tInter - prev->Proj; +00255 tangent.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> = 0; +00256 +00257 tgNorm = tangent.<a class="code" href="classNLMISC_1_1CVector.html#z331_2">norm</a>(); +00258 <font class="keywordflow">if</font> (fabs(tgNorm > 10E-8)) +00259 { +00260 invTgNorm = 1.f / tgNorm; +00261 } +00262 <font class="keywordflow">else</font> +00263 { +00264 invTgNorm = 1.f; +00265 } +00266 <font class="comment">// build orthogonals vectors to tangent</font> +00267 +00268 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = inter + ribSize * invTgNorm * (tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K - tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00269 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = inter + ribSize * invTgNorm * (- tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K + tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00270 } +00271 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (next->Proj.y > <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a>) <font class="comment">// first point cross the near plane</font> +00272 { +00273 <font class="comment">// compute intersection point</font> +00274 <font class="comment">// compute intersection point</font> +00275 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> inter; +00276 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> tInter; +00277 <font class="keywordflow">if</font> (fabsf(prev->Proj.y - next->Proj.y) > <a class="code" href="namespaceNL3D.html#a217">NormEpsilon</a>) +00278 { +00279 <font class="keywordtype">float</font> lambda = (next->Proj.y - <a class="code" href="namespaceNL3D.html#a216">ZEpsilon</a>) / (next->Proj.y - prev->Proj.y); +00280 inter = lambda * prev->Interp + (1.f - lambda) * next->Interp; +00281 <a class="code" href="namespaceNL3D.html#a452">MakeProj</a>(tInter, mat * inter); +00282 } +00283 <font class="keywordflow">else</font> <font class="comment">// </font> +00284 { +00285 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = pos->Interp; +00286 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = pos->Interp; +00287 <font class="keywordflow">return</font>; +00288 } +00289 +00290 tangent = next->Proj - tInter; +00291 tangent.<a class="code" href="classNLMISC_1_1CVector.html#m1">y</a> = 0; +00292 tgNorm = tangent.<a class="code" href="classNLMISC_1_1CVector.html#z331_2">norm</a>(); +00293 <font class="keywordflow">if</font> (fabs(tgNorm > 10E-8)) +00294 { +00295 invTgNorm = 1.f / tgNorm; +00296 } +00297 <font class="keywordflow">else</font> +00298 { +00299 invTgNorm = 1.f; +00300 } +00301 <font class="comment">// build orthogonals vectors to tangent</font> +00302 +00303 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = inter + ribSize * invTgNorm * (tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K - tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00304 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = inter + ribSize * invTgNorm * (- tangent.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * K + tangent.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * I); +00305 +00306 } +00307 <font class="keywordflow">else</font> <font class="comment">// two points are not visible</font> +00308 { +00309 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) currVert = pos->Interp; +00310 *(<a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> *) (currVert + vertexSize) = pos->Interp; +00311 } +00312 +00313 } +00314 +00315 +00316 <font class="comment">//========================================================================== </font> +<a name="l00317"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#c1">00317</a> <font class="keywordtype">void</font> CPSRibbonLookAt::displayRibbons(uint32 nbRibbons, uint32 srcStep) +00318 { +00319 <font class="keywordflow">if</font> (!nbRibbons) <font class="keywordflow">return</font>; +00320 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>); +00321 CPSRibbonBase::updateLOD(); +00322 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> < 2) <font class="keywordflow">return</font>; +00323 +00324 <font class="keyword">const</font> <font class="keywordtype">float</font> date = <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->getOwner()->getSystemDate(); +00325 uint8 *currVert; +00326 +00327 CVBnPB &VBnPB = <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_1">getVBnPB</a>(); <font class="comment">// get the appropriate vb (build it if needed)</font> +00328 CVertexBuffer &VB = VBnPB.VB; +00329 CPrimitiveBlock &PB = VBnPB.PB; +00330 +00331 <font class="keyword">const</font> uint32 vertexSize = VB.getVertexSize(); +00332 uint colorOffset=0; +00333 <font class="keyword">const</font> uint32 vertexSizeX2 = vertexSize << 1; +00334 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> I = <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->computeI(); +00335 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> K = <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->computeK(); +00336 +00337 +00338 CMatrix mat = <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->isInSystemBasis() ? <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#a19">getViewMat</a>() * <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#a15">getSysMat</a>() +00339 : <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#a19">getViewMat</a>(); +00340 IDriver *drv = this-><a class="code" href="classNL3D_1_1CPSLocatedBindable.html#a10">getDriver</a>(); +00341 <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#a21">setupDriverModelMatrix</a>(); +00342 drv->activeVertexBuffer(VB); +00343 <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->incrementNbDrawnParticles(nbRibbons); <font class="comment">// for benchmark purpose </font> +00344 +00345 <font class="keyword">const</font> uint numRibbonBatch = <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_2">getNumRibbonsInVB</a>(); <font class="comment">// number of ribons to process at once</font> +00346 +00347 +00348 <font class="keyword">static</font> <a class="code" href="namespaceNL3D.html#a218">TRibbonVect</a> currRibbon; +00349 <font class="keyword">static</font> std::vector<float> sizes; +00350 <font class="keyword">static</font> std::vector<NLMISC::CRGBA> colors; +00351 +00352 +00353 +00354 +00355 +00356 <font class="keywordflow">if</font> (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> == 0) <font class="keywordflow">return</font>; +00357 +00358 currRibbon.resize(<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1); +00359 sizes.resize(numRibbonBatch); +00360 +00361 +00363 CParticleSystem &ps = *(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->getOwner()); +00364 <font class="keywordflow">if</font> (ps.getColorAttenuationScheme() != NULL) +00365 { +00366 CPSMaterial::forceModulateConstantColor(<font class="keyword">true</font>, ps.getGlobalColor()); +00367 } +00368 <font class="keywordflow">else</font> +00369 { +00370 <a class="code" href="classNL3D_1_1CPSMaterial.html#a4">forceModulateConstantColor</a>(<font class="keyword">false</font>); +00371 <a class="code" href="classNL3D_1_1CPSMaterial.html#n0">_Mat</a>.setColor(ps.getGlobalColor()); +00372 } +00373 +00374 <font class="keywordflow">if</font> (_ColorScheme) +00375 { +00376 colorOffset = VB.getColorOff(); +00377 colors.resize(numRibbonBatch); +00378 } +00379 +00380 +00381 uint toProcess; +00382 uint ribbonIndex = 0; <font class="comment">// index of the first ribbon in the batch being processed</font> +00383 +00384 uint32 fpRibbonIndex = 0; +00385 +00386 <font class="keywordflow">do</font> +00387 { +00388 toProcess = <a class="code" href="bit__set_8cpp.html#a0">std::min</a>((uint) (nbRibbons - ribbonIndex) <font class="comment">/* = left to do */</font>, numRibbonBatch); +00389 +00390 +00392 <font class="keyword">const</font> <font class="keywordtype">float</font> *ptCurrSize; +00393 uint32 ptCurrSizeIncrement; +00394 <font class="keywordflow">if</font> (_SizeScheme) +00395 { +00396 ptCurrSize = (<font class="keywordtype">float</font> *) <a class="code" href="classNL3D_1_1CPSSizedParticle.html#n1">_SizeScheme</a>->make(this->_Owner, ribbonIndex, &sizes[0], <font class="keyword">sizeof</font>(<font class="keywordtype">float</font>), toProcess, <font class="keyword">true</font>, srcStep); +00397 ptCurrSizeIncrement = 1; +00398 } +00399 <font class="keywordflow">else</font> +00400 { +00401 ptCurrSize = &<a class="code" href="classNL3D_1_1CPSSizedParticle.html#n0">_ParticleSize</a>; +00402 ptCurrSizeIncrement = 0; +00403 } +00404 +00406 <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> *ptCurrColor=0; +00407 <font class="keywordflow">if</font> (_ColorScheme) +00408 { +00409 colors.resize(nbRibbons); +00410 ptCurrColor = (<a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> *) <a class="code" href="classNL3D_1_1CPSColoredParticle.html#n1">_ColorScheme</a>->make(this->_Owner, ribbonIndex, &colors[0], <font class="keyword">sizeof</font>(<a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a>), toProcess, <font class="keyword">true</font>, srcStep); +00411 } +00412 +00413 currVert = (uint8 *) VB.getVertexCoordPointer(); +00414 <font class="keywordflow">for</font> (uint k = ribbonIndex; k < ribbonIndex + toProcess; ++k) +00415 { +00416 +00417 TRibbonVect::iterator rIt = currRibbon.begin(), rItEnd = currRibbon.end(), rItEndMinusOne = rItEnd - 1; +00418 +00420 <font class="comment">// interpolate and project points //</font> +00422 <font class="comment"> </font> +00423 <font class="keywordflow">if</font> (!<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n2">_Parametric</a>) +00424 { +00425 +00427 <font class="comment">// INCREMENTAL CASE //</font> +00429 <font class="comment"></font> +00430 <font class="comment">// the parent class has a method to get the ribbons positions</font> +00431 <a class="code" href="classNL3D_1_1CPSRibbonBase.html#b4">computeRibbon</a>((uint) (fpRibbonIndex >> 16), &rIt->Interp, <font class="keyword">sizeof</font>(CVectInfo)); +00432 <font class="keywordflow">do</font> +00433 { +00434 <a class="code" href="namespaceNL3D.html#a452">MakeProj</a>(rIt->Proj, mat * rIt->Interp); +00435 ++rIt; +00436 } +00437 <font class="keywordflow">while</font> (rIt != rItEnd); +00438 } +00439 <font class="keywordflow">else</font> +00440 { +00442 <font class="comment">// PARAMETRIC CASE //</font> +00444 <font class="comment"> // we compute each pos thanks to the parametric curve </font> +00445 <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->integrateSingle(date - <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n4">_UsedSegDuration</a> * (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1), <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n4">_UsedSegDuration</a>, <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1, (uint) (fpRibbonIndex >> 16), +00446 &rIt->Interp, <font class="keyword">sizeof</font>(CVectInfo) ); +00447 <font class="comment">// project each position now</font> +00448 <font class="keywordflow">do</font> +00449 { +00450 <a class="code" href="namespaceNL3D.html#a452">MakeProj</a>(rIt->Proj, mat * rIt->Interp); +00451 ++rIt; +00452 } +00453 <font class="keywordflow">while</font> (rIt != rItEnd); +00454 } +00455 +00456 rIt = currRibbon.begin(); +00457 +00458 +00459 <font class="comment">// setup colors</font> +00460 <font class="keywordflow">if</font> (_ColorScheme) +00461 { +00462 uint8 *currColVertex = currVert + colorOffset; +00463 uint colCount = (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1) << 1; +00464 <font class="keywordflow">do</font> +00465 { +00466 * (CRGBA *) currColVertex = *ptCurrColor; +00467 currColVertex += vertexSize; +00468 } +00469 <font class="keywordflow">while</font> (--colCount); +00470 +00471 ++ptCurrColor; +00472 } +00473 +00475 <font class="comment">// deals with first point </font> +00476 <a class="code" href="namespaceNL3D.html#a453">BuildSlice</a>(mat, VB, currVert, vertexSize, I, K, rIt, rIt, rIt + 1, *ptCurrSize); +00477 currVert += vertexSizeX2; +00478 ++rIt; +00479 +00480 +00481 <font class="comment">// deals with other points </font> +00482 <font class="keywordflow">for</font> (;;) <font class="comment">// we assume at least 2 segments, so we must have a middle point </font> +00483 { +00484 <font class="comment">// build 2 vertices with the right tangent. /* to project 2 */ is old projected point</font> +00485 <a class="code" href="namespaceNL3D.html#a453">BuildSlice</a>(mat, VB, currVert, vertexSize, I, K, rIt, rIt - 1, rIt + 1, *ptCurrSize); +00486 <font class="comment">// next position </font> +00487 ++rIt; +00488 <font class="keywordflow">if</font> (rIt == rItEndMinusOne) <font class="keywordflow">break</font>; +00489 <font class="comment">// next vertex </font> +00490 currVert += vertexSizeX2; +00491 } +00492 currVert += vertexSizeX2; +00493 <font class="comment">// last point.</font> +00494 <a class="code" href="namespaceNL3D.html#a453">BuildSlice</a>(mat, VB, currVert, vertexSize, I, K, rIt , rIt - 1, rIt, *ptCurrSize); +00495 ptCurrSize += ptCurrSizeIncrement; +00496 currVert += vertexSizeX2; +00497 +00498 fpRibbonIndex += srcStep; +00499 } +00500 +00501 PB.setNumTri((<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> << 1) * toProcess); +00502 <font class="comment">// display the result</font> +00503 drv->render(PB, <a class="code" href="classNL3D_1_1CPSMaterial.html#n0">_Mat</a>); +00504 ribbonIndex += toProcess; +00505 } +00506 <font class="keywordflow">while</font> (ribbonIndex != nbRibbons); +00507 } +00508 +00509 <font class="comment">//========================================================================== </font> +<a name="l00510"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a1">00510</a> <font class="keywordtype">bool</font> CPSRibbonLookAt::hasTransparentFaces(<font class="keywordtype">void</font>) +00511 { +00512 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSMaterial.html#a3">getBlendingMode</a>() != CPSMaterial::alphaTest ; +00513 } +00514 +00515 +00516 <font class="comment">//========================================================================== </font> +<a name="l00517"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a2">00517</a> <font class="keywordtype">bool</font> CPSRibbonLookAt::hasOpaqueFaces(<font class="keywordtype">void</font>) +00518 { +00519 <font class="keywordflow">return</font> !<a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a1">hasTransparentFaces</a>(); +00520 } +00521 +00522 <font class="comment">//========================================================================== </font> +<a name="l00523"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#a3">00523</a> uint32 CPSRibbonLookAt::getMaxNumFaces(<font class="keywordtype">void</font>)<font class="keyword"> const</font> +00524 <font class="keyword"></font>{ +00525 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>); +00526 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CPSLocatedBindable.html#n0">_Owner</a>->getMaxSize() * <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n0">_NbSegs</a> * 2; +00527 } +00528 +00529 +00530 +00531 <font class="comment">//========================================================================== </font> +<a name="l00532"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_1">00532</a> CPSRibbonLookAt::CVBnPB &CPSRibbonLookAt::getVBnPB() +00533 { +00534 <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_0">TVBMap</a> &map = <a class="code" href="classNL3D_1_1CPSColoredParticle.html#n1">_ColorScheme</a> ? <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_3">_VBMap</a> : <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_4">_ColoredVBMap</a>; +00535 TVBMap::iterator it = map.find(<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1); +00536 <font class="keywordflow">if</font> (it != map.end()) +00537 { +00538 <font class="keywordflow">return</font> it->second; +00539 } +00540 <font class="keywordflow">else</font> <font class="comment">// must create this vb</font> +00541 { +00542 <font class="keyword">const</font> uint numRibbonInVB = <a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_2">getNumRibbonsInVB</a>(); +00543 CVBnPB &VBnPB = map[<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1]; <font class="comment">// make an entry</font> +00544 +00546 CVertexBuffer &vb = VBnPB.VB; +00547 vb.setVertexFormat(CVertexBuffer::PositionFlag | +00548 CVertexBuffer::TexCoord0Flag | +00549 (<a class="code" href="classNL3D_1_1CPSColoredParticle.html#n1">_ColorScheme</a> ? CVertexBuffer::PrimaryColorFlag : 0)); +00550 vb.setNumVertices(2 * (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1) * numRibbonInVB ); +00551 +00552 <font class="comment">// set the primitive block size</font> +00553 CPrimitiveBlock &pb = VBnPB.PB; +00554 pb.setNumTri((<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> << 1) * numRibbonInVB); +00556 uint vbIndex = 0; +00557 uint pbIndex = 0; +00558 <font class="keywordflow">for</font> (uint i = 0; i < numRibbonInVB; ++i) +00559 { +00560 <font class="keywordflow">for</font> (uint k = 0; k < (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1); ++k) +00561 { +00562 vb.setTexCoord(vbIndex, 0, CUV((1.f - k / (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a>), 0)); +00563 vb.setTexCoord(vbIndex + 1, 0, CUV((1.f - k / (<font class="keywordtype">float</font>) <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a>), 1)); +00564 <font class="keywordflow">if</font> (k != <a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a>) +00565 { +00567 pb.setTri(pbIndex ++, vbIndex + 1, vbIndex + 2, vbIndex); +00568 pb.setTri(pbIndex ++, vbIndex + 1, vbIndex + 3, vbIndex + 2); +00569 } +00570 vbIndex += 2; +00571 } +00572 } +00573 <font class="keywordflow">return</font> VBnPB; +00574 } +00575 } +00576 +00577 <font class="comment">//========================================================================== </font> +<a name="l00578"></a><a class="code" href="classNL3D_1_1CPSRibbonLookAt.html#z734_2">00578</a> uint CPSRibbonLookAt::getNumRibbonsInVB()<font class="keyword"> const</font> +00579 <font class="keyword"></font>{ +00581 <font class="keyword">const</font> uint vertexInVB = 256; +00582 <font class="keywordflow">return</font> std::max(1u, (uint) (vertexInVB / (<a class="code" href="classNL3D_1_1CPSRibbonBase.html#n3">_UsedNbSegs</a> + 1))); +00583 } +00584 +00585 } <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> |