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authorneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
committerneodarz <neodarz@neodarz.net>2018-08-11 20:21:34 +0200
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+<hr><h1>mrm_level_detail.h</h1><a href="mrm__level__detail_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
+00007 <font class="comment">/* Copyright, 2000-2002 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_MRM_LEVEL_DETAIL_H</font>
+00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_MRM_LEVEL_DETAIL_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="common_8h.html">nel/misc/common.h</a>"</font>
+00031
+00032
+00033 <font class="keyword">namespace </font>NL3D
+00034 {
+00035
+00036
+00037 <font class="comment">// ***************************************************************************</font>
+00038 <font class="comment">/* This is used to have correct max Polygon count setuped. This suppose that MRM.NumLod==10</font>
+00039 <font class="comment"> Hence, a mean value of 0.5*1/10 is used</font>
+00040 <font class="comment">*/</font>
+<a name="l00041"></a><a class="code" href="mrm__level__detail_8h.html#a0">00041</a> <font class="preprocessor">#define NL3D_MRM_LD_SHIFT_POLY_COUNT 0.05f</font>
+00042 <font class="preprocessor"></font>
+00043
+00044 <font class="comment">// ***************************************************************************</font>
+<a name="l00051"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html">00051</a> <font class="comment"></font><font class="keyword">class </font>CMRMLevelDetail
+00052 {
+00053 <font class="keyword">public</font>:
+00054
+<a name="l00056"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">00056</a> uint32 <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>;
+<a name="l00058"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m1">00058</a> uint32 <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m1">MaxFaceUsed</a>;
+00059
+<a name="l00061"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m2">00061</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m2">DistanceFinest</a>;
+<a name="l00063"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m3">00063</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m3">DistanceMiddle</a>;
+<a name="l00065"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m4">00065</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m4">DistanceCoarsest</a>;
+00066
+<a name="l00068"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m5">00068</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m5">OODistanceDelta</a>;
+<a name="l00069"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m6">00069</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m6">DistancePow</a>;
+00070
+00071 <font class="keyword">public</font>:
+<a name="l00073"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a0">00073</a> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a0">CMRMLevelDetail</a>() {}
+00074
+00076 <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a1">compileDistanceSetup</a>();
+00077
+00079 <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a2">getLevelDetailFromDist</a>(<font class="keywordtype">float</font> dist);
+00080
+<a name="l00082"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a3">00082</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a3">getNumTriangles</a> (<font class="keywordtype">float</font> dist)
+00083 {
+00084 <font class="comment">// return the lod detail [0,1].</font>
+00085 <font class="keywordtype">float</font> ld= <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a2">getLevelDetailFromDist</a>(dist);
+00086 <font class="comment">// return in nb face.</font>
+00087 <font class="keywordflow">if</font>(ld&lt;=0)
+00088 <font class="keywordflow">return</font> (float)<a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>;
+00089 <font class="keywordflow">else</font>
+00090 {
+00091 <font class="comment">/* over-estimate the number of poly rendered </font>
+00092 <font class="comment"> because this is always the higher Lod which is rendered, geomorphing to the coarser one.</font>
+00093 <font class="comment"> NB: still need to over-estimate if ld==1, because getLevelDetailFromPolyCount() remove the shift...</font>
+00094 <font class="comment"> */</font>
+00095 ld+= <a class="code" href="mrm__level__detail_8h.html#a0">NL3D_MRM_LD_SHIFT_POLY_COUNT</a>;
+00096 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a> + ld * (<a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m1">MaxFaceUsed</a> - <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>);
+00097 }
+00098 }
+00099
+<a name="l00101"></a><a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a4">00101</a> <font class="keywordtype">float</font> <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#a4">getLevelDetailFromPolyCount</a>(<font class="keywordtype">float</font> polygonCount)
+00102 {
+00103 <font class="keywordtype">float</font> ld;
+00104 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m1">MaxFaceUsed</a> &gt; <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>)
+00105 {
+00106 <font class="comment">// compute the level of detail we want.</font>
+00107 ld= (polygonCount - <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>) / (<a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m1">MaxFaceUsed</a> - <a class="code" href="classNL3D_1_1CMRMLevelDetail.html#m0">MinFaceUsed</a>);
+00108 <font class="comment">/* remove the value added in getNumTriangles(). For the same reason:</font>
+00109 <font class="comment"> this is always the higher Lod which is rendered, geomorphing to the coarser one.</font>
+00110 <font class="comment"> Hence we must degrade a bit.</font>
+00111 <font class="comment"> NB: if polygonCount==MinFaceUsed, then we have here ld= -NL3D_MRM_LD_SHIFT_POLY_COUNT (ie -0.05f)</font>
+00112 <font class="comment"> but it is clamped below</font>
+00113 <font class="comment"> */</font>
+00114 ld-= <a class="code" href="mrm__level__detail_8h.html#a0">NL3D_MRM_LD_SHIFT_POLY_COUNT</a>;
+00115 <a class="code" href="namespaceNLMISC.html#a215">NLMISC::clamp</a>(ld, 0, 1);
+00116 }
+00117 <font class="keywordflow">else</font>
+00118 ld= 1;
+00119
+00120 <font class="keywordflow">return</font> ld;
+00121 }
+00122
+00123 };
+00124
+00125
+00126 } <font class="comment">// NL3D</font>
+00127
+00128
+00129 <font class="preprocessor">#endif // NL_MRM_LEVEL_DETAIL_H</font>
+00130 <font class="preprocessor"></font>
+00131 <font class="comment">/* End of mrm_level_detail.h */</font>
+</pre></div>
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