aboutsummaryrefslogtreecommitdiff
path: root/docs/doxygen/nel/mrm__level__detail_8h-source.html
blob: 568bb4ca6b558365c8cb51440b0c574dbdb8d5e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
	<TITLE>nevrax.org : docs</TITLE>
	<LINK REL=stylesheet TYPE="text/css" HREF="/inc/css/nevrax.css">
	<link href="doxygen.css" rel="stylesheet" type="text/css">
</HEAD>
<BODY MARGINHEIGHT="0" MARGINWIDTH="0">

<!-- uplinks -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0>
 <TR>
        <TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD WIDTH=140 BGCOLOR=#dddddd><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
        <TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle>&nbsp;<A CLASS=uplinks HREF='/'><b>Home</B></FONT></A>&nbsp;&nbsp;&nbsp;</TD>
        <TD><IMG  width=6 height=14  SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle>&nbsp;<A CLASS=uplinks HREF='/'><b>nevrax.com</B></FONT></A>&nbsp;&nbsp;&nbsp;</TD>
 </TR>
</TABLE> 

<!-- banner Nevrax -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0 WIDTH=100%>
 <TR><TD  BGCOLOR="#000000" BACKGROUND="/inc/img/black_banner.jpg"><A HREF=""><IMG  SRC="/inc/img/nevrax.gif" WIDTH="170" HEIGHT="45" BORDER=0 ALT="Nevrax" ></A></TD></TR>
</TABLE>

<!-- main table -->
<TABLE CELLSPACING=0 CELLPADDING=0  BORDER=0 height=100%>
 <TR>
	<TD WIDTH=16><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="10" BORDER=0 ALT=""></TD>
	<TD WIDTH=140   BGCOLOR=#dddddd VALIGN=TOP ALIGN=middle><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">

		<!------ Begin Box ------>
		<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR=black><TR><TD><TABLE border=0  cellspacing=2 cellpadding=0 width=120><tr><TD ALIGN=middle bgcolor=black>
		<FONT COLOR=white FACE="sans-serif"><B>Nevrax.org</B></FONT></TD></TR><tr><td  colspan=2 bgcolor=#FFFFFF>
		<TABLE cellspacing=0 cellpadding=1 border=0>
			<tr><td ALIGN=middle><a  class='linkbox' href="/news/" TITLE="Rubrique news"><img width=13 height=15  hspace=5 border=0 src=/inc/img/picto-news.gif ALT=#></A></td><td><a  class='linkbox' href="/news/" TITLE="News">News</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/mail/" TITLE="Rubrique mail"><img width=15 height=11  hspace=5 border=0 src=/inc/img/picto-mail.gif ALT=#></A></td><td><a  class='linkbox' href="/mail/" TITLE="Mailing list archive">Mailing-list</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/docs/" TITLE="Rubrique docs"><img width=14 height=16  hspace=5 border=0 src=/inc/img/picto-docs.gif ALT=#></A></td><td><a  class='linkbox' href="/docs/" TITLE="Documentation">Documentation</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/cvs/" TITLE="Rubrique cvs"><img width=13 height=17  hspace=5 border=0 src=/inc/img/picto-cvs.gif ALT=#></A></td><td><a  class='linkbox' href="/cvs/" TITLE="CVS Web">CVS</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/bugs/" TITLE="Rubrique bugs"><img width=20 height=16  hspace=5 border=0 src=/inc/img/picto-bugs.gif ALT=#></A></td><td><a  class='linkbox' href="/bugs/" TITLE="Bugtracking">Bugs</a></td></tr>
			<tr><td ALIGN=middle><a  class='linkbox' href="/GPL.php3" TITLE="Rubrique license"><img  width=18 height=12   hspace=5 border=0 src=/inc/img/picto-gpl.gif ALT=#></A></td><td><a  class='linkbox' href="/GPL.php3" TITLE="License">License</a></td></tr>
		</TABLE>
		</TD></TR></TABLE></TD></TR></TABLE>
		<!------ End Box  ------>

	</TD>
	<TD WIDTH=15><IMG  SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
	<TD ALIGN=left valign=top><IMG  SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">

<!-- title -->
<TABLE  background="/inc/img/redline.gif" CELLSPACING=0 CELLPADDING=0  BORDER=0 width=100%><tr><td>
<A HREF="/docs/"><img src="/inc/img/t_docs.gif" ALT="Docs" HEIGHT=20 BORDER=0></A>
</td><td><IMG  SRC="/inc/img/pixel.gif" WIDTH="1" HEIGHT="1" BORDER=0 ALT="">
</td></tr></table>
&nbsp;

<!-- block -->
<TABLE  bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0  BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="/inc/img/reddots.gif"></TD>
	<TD><B>Documentation</B></TD>
	<TD ALIGN=RIGHT>&nbsp;</td>
</tr></table>
<!-- Generated by Doxygen 1.2.14 -->
<center>
<a class="qindex" href="index.html">Main Page</a> &nbsp; <a class="qindex" href="namespaces.html">Namespace List</a> &nbsp; <a class="qindex" href="hierarchy.html">Class Hierarchy</a> &nbsp; <a class="qindex" href="classes.html">Alphabetical List</a> &nbsp; <a class="qindex" href="annotated.html">Compound List</a> &nbsp; <a class="qindex" href="files.html">File List</a> &nbsp; <a class="qindex" href="namespacemembers.html">Namespace Members</a> &nbsp; <a class="qindex" href="functions.html">Compound Members</a> &nbsp; <a class="qindex" href="globals.html">File Members</a> &nbsp; <a class="qindex" href="pages.html">Related Pages</a> &nbsp; <a class="qindexRef" doxygen="_cgi:/cgi-bin/nel-search.cgi" href="/cgi-bin/nel-search.cgi">Search</a> &nbsp; </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&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>

<!-- footer -->
<BR><FONT Size=+5>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </FONT>
</TD>
<TD WIDTH=15><IMG  SRC=/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>