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| author | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
|---|---|---|
| committer | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
| commit | 0ea5fc66924303d1bf73ba283a383e2aadee02f2 (patch) | |
| tree | 2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/mrm__level__detail_8h-source.html | |
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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>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<=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> > <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> + +<!-- 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> |