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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
<!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> <A CLASS=uplinks HREF=><b>Home</B></FONT></A> </TD>
<TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=http://www.nevrax.com><b>nevrax.com</B></FONT></A> </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>
<!-- 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> </td>
</tr></table>
<!-- Generated by Doxygen 1.2.14 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:/cgi-bin/nel-search.cgi" href="/cgi-bin/nel-search.cgi">Search</a> </center>
<hr><h1>driver_opengl_matrix.cpp</h1><a href="driver__opengl__matrix_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000 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="stdopengl_8h.html">stdopengl.h</a>"</font>
00027
00028 <font class="keyword">namespace </font>NL3D {
00029
00030 <font class="comment">// ***************************************************************************</font>
<a name="l00031"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a27">00031</a> <font class="keywordtype">void</font> CDriverGL::setFrustum(<font class="keywordtype">float</font> left, <font class="keywordtype">float</font> right, <font class="keywordtype">float</font> bottom, <font class="keywordtype">float</font> top, <font class="keywordtype">float</font> znear, <font class="keywordtype">float</font> zfar, <font class="keywordtype">bool</font> perspective)
00032 {
00033 glMatrixMode(GL_PROJECTION);
00034 glLoadIdentity();
00035 <font class="keywordflow">if</font> (perspective)
00036 {
00037 glFrustum(left,right,bottom,top,znear,zfar);
00038 }
00039 <font class="keywordflow">else</font>
00040 {
00041 glOrtho(left,right,bottom,top,znear,zfar);
00042 }
00043
00044 <font class="comment">// Backup znear and zfar for zbias setup</font>
00045 <a class="code" href="classNL3D_1_1CDriverGL.html#o8">_OODeltaZ</a> = 1 / (zfar - znear);
00046
00047 glMatrixMode(GL_MODELVIEW);
00048 }
00049
00050
00051 <font class="comment">// ***************************************************************************</font>
<a name="l00052"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a29">00052</a> <font class="keywordtype">void</font> CDriverGL::setupViewMatrixEx(<font class="keyword">const</font> CMatrix& mtx, <font class="keyword">const</font> CVector &cameraPos)
00053 {
00054 <a class="code" href="classNL3D_1_1CDriverGL.html#o9">_UserViewMtx</a>= mtx;
00055
00056 <font class="comment">// Setup the matrix to transform the CScene basis in openGL basis.</font>
00057 CMatrix changeBasis;
00058 CVector I(1,0,0);
00059 CVector J(0,0,-1);
00060 CVector K(0,1,0);
00061
00062 changeBasis.identity();
00063 changeBasis.setRot(I,J,K, <font class="keyword">true</font>);
00064 <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>=changeBasis*mtx;
00065 <font class="comment">// Reset the viewMtx position.</font>
00066 <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>.setPos(CVector::Null);
00067 <a class="code" href="classNL3D_1_1CDriverGL.html#o12">_PZBCameraPos</a>= cameraPos;
00068
00069 <font class="comment">// Anything that depend on the view martix must be updated.</font>
00070 <a class="code" href="classNL3D_1_1CDriverGL.html#o5">_LightSetupDirty</a>= <font class="keyword">true</font>;
00071 <a class="code" href="classNL3D_1_1CDriverGL.html#o6">_ModelViewMatrixDirty</a>= <font class="keyword">true</font>;
00072 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_RenderSetupDirty</a>= <font class="keyword">true</font>;
00073
00074 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a> = <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>;
00075 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>.setPos(CVector(0.0f,0.0f,0.0f));
00076 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>.invert();
00077 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a> = changeBasis * <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>;
00078 }
00079
00080
00081 <font class="comment">// ***************************************************************************</font>
<a name="l00082"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a28">00082</a> <font class="keywordtype">void</font> CDriverGL::setupViewMatrix(<font class="keyword">const</font> CMatrix& mtx)
00083 {
00084 <a class="code" href="classNL3D_1_1CDriverGL.html#o9">_UserViewMtx</a>= mtx;
00085
00086 <font class="comment">// Setup the matrix to transform the CScene basis in openGL basis.</font>
00087 CMatrix changeBasis;
00088 CVector I(1,0,0);
00089 CVector J(0,0,-1);
00090 CVector K(0,1,0);
00091
00092 changeBasis.identity();
00093 changeBasis.setRot(I,J,K, <font class="keyword">true</font>);
00094 <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>=changeBasis*mtx;
00095 <font class="comment">// Just set the PZBCameraPos to 0.</font>
00096 <a class="code" href="classNL3D_1_1CDriverGL.html#o12">_PZBCameraPos</a>= CVector::Null;
00097
00098 <font class="comment">// Anything that depend on the view martix must be updated.</font>
00099 <a class="code" href="classNL3D_1_1CDriverGL.html#o5">_LightSetupDirty</a>= <font class="keyword">true</font>;
00100 <a class="code" href="classNL3D_1_1CDriverGL.html#o6">_ModelViewMatrixDirty</a>= <font class="keyword">true</font>;
00101 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_RenderSetupDirty</a>= <font class="keyword">true</font>;
00102
00103 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a> = <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>;
00104 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>.setPos(CVector(0.0f,0.0f,0.0f));
00105 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>.invert();
00106 <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a> = changeBasis * <a class="code" href="classNL3D_1_1CDriverGL.html#o11">_TexMtx</a>;
00107
00108 }
00109
00110 <font class="comment">// ***************************************************************************</font>
<a name="l00111"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a32">00111</a> CMatrix CDriverGL::getViewMatrix(<font class="keywordtype">void</font>)<font class="keyword"> const</font>
00112 <font class="keyword"></font>{
00113 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CDriverGL.html#o9">_UserViewMtx</a>;
00114 }
00115
00116 <font class="comment">// ***************************************************************************</font>
<a name="l00117"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a30">00117</a> <font class="keywordtype">void</font> CDriverGL::setupModelMatrix(<font class="keyword">const</font> CMatrix& mtx)
00118 {
00119 <font class="comment">// profiling</font>
00120 <a class="code" href="classNL3D_1_1CDriverGL.html#z404_5">_NbSetupModelMatrixCall</a>++;
00121
00122
00123 <font class="comment">// Dirt flags.</font>
00124 <a class="code" href="classNL3D_1_1CDriverGL.html#o6">_ModelViewMatrixDirty</a>= <font class="keyword">true</font>;
00125 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_RenderSetupDirty</a>= <font class="keyword">true</font>;
00126
00127
00128 <font class="comment">// Put the matrix in the opengl eye space, and store it.</font>
00129 CMatrix mat= mtx;
00130 <font class="comment">// remove first the _PZBCameraPos</font>
00131 mat.setPos(mtx.getPos() - <a class="code" href="classNL3D_1_1CDriverGL.html#o12">_PZBCameraPos</a>);
00132 <a class="code" href="classNL3D_1_1CDriverGL.html#o13">_ModelViewMatrix</a>= <a class="code" href="classNL3D_1_1CDriverGL.html#o10">_ViewMtx</a>*mat;
00133 }
00134
00135 <font class="comment">// ***************************************************************************</font>
<a name="l00136"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a31">00136</a> <font class="keywordtype">void</font> CDriverGL::multiplyModelMatrix(<font class="keyword">const</font> CMatrix& mtx)
00137 {
00138 <font class="comment">// Dirt flags.</font>
00139 <a class="code" href="classNL3D_1_1CDriverGL.html#o6">_ModelViewMatrixDirty</a>= <font class="keyword">true</font>;
00140 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_RenderSetupDirty</a>= <font class="keyword">true</font>;
00141
00142
00143 <font class="comment">// multiply this modelMatrix with the _ModelViewMatrix.</font>
00144 <a class="code" href="classNL3D_1_1CDriverGL.html#o13">_ModelViewMatrix</a>= <a class="code" href="classNL3D_1_1CDriverGL.html#o13">_ModelViewMatrix</a>*mtx;
00145 }
00146
00147
00148 <font class="comment">// ***************************************************************************</font>
<a name="l00149"></a><a class="code" href="classNL3D_1_1CDriverGL.html#c17">00149</a> <font class="keywordtype">void</font> CDriverGL::doRefreshRenderSetup()
00150 {
00151 <font class="comment">// Check if the light setup has been modified first</font>
00152 <font class="keywordflow">if</font> (_LightSetupDirty)
00153 <font class="comment">// Recompute light setup</font>
00154 <a class="code" href="classNL3D_1_1CDriverGL.html#c10">cleanLightSetup</a> ();
00155
00156 <font class="comment">// Check light setup is good</font>
00157 <a class="code" href="debug_8h.html#a6">nlassert</a> (<a class="code" href="classNL3D_1_1CDriverGL.html#o5">_LightSetupDirty</a>==<font class="keyword">false</font>);
00158
00159
00160 <font class="comment">// Check if must update the modelViewMatrix</font>
00161 <font class="keywordflow">if</font>( _ModelViewMatrixDirty )
00162 {
00163 <font class="comment">// By default, the first model matrix is active</font>
00164 glLoadMatrixf( <a class="code" href="classNL3D_1_1CDriverGL.html#o13">_ModelViewMatrix</a>.get() );
00165 <font class="comment">// enable normalize if matrix has scale.</font>
00166 <a class="code" href="classNL3D_1_1CDriverGL.html#c15">enableGlNormalize</a>( <a class="code" href="classNL3D_1_1CDriverGL.html#o13">_ModelViewMatrix</a>.hasScalePart() || <a class="code" href="classNL3D_1_1CDriverGL.html#o4">_ForceNormalize</a> );
00167 <font class="comment">// clear.</font>
00168 <a class="code" href="classNL3D_1_1CDriverGL.html#o6">_ModelViewMatrixDirty</a>= <font class="keyword">false</font>;
00169 }
00170
00171 <font class="comment">// render setup is cleaned.</font>
00172 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_RenderSetupDirty</a>= <font class="keyword">false</font>;
00173 }
00174
00175
00176 } <font class="comment">// NL3D</font>
</pre></div>
<!-- footer -->
<BR><FONT Size=+5> </FONT>
</TD>
<TD WIDTH=15><IMG SRC=/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>
|
