aboutsummaryrefslogtreecommitdiff
path: root/docs/doxygen/nel/heat__haze_8cpp-source.html
blob: 7e224a97ea17d2dad5780f7fd22c721dbb886193 (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
184
185
186
187
188
189
190
191
192
<!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>heat_haze.cpp</h1><a href="heat__haze_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 
00007 <font class="comment">/* Copyright, 2000, 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 
00029 <font class="preprocessor">#include "<a class="code" href="heat__haze_8h.html">3d/heat_haze.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="scene_8h.html">3d/scene.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="deform__2d_8h.html">3d/deform_2d.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="vector__2f_8h.html">nel/misc/vector_2f.h</a>"</font>
00033 
00034 <font class="keyword">namespace </font>NL3D
00035 {
00036         
00037 
<a name="l00038"></a><a class="code" href="structNL3D_1_1CSinWave.html">00038</a>         <font class="keyword">struct </font>CSinWave : <font class="keyword">public</font> CDeform2d::IPerturbUV
00039         {
<a name="l00040"></a><a class="code" href="structNL3D_1_1CSinWave.html#m0">00040</a>                 <font class="keywordtype">float</font> <a class="code" href="structNL3D_1_1CSinWave.html#m0">Phase</a>;
<a name="l00041"></a><a class="code" href="structNL3D_1_1CSinWave.html#a0">00041</a>                 <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="structNL3D_1_1CSinWave.html#a0">perturbUV</a>(<font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <font class="keywordtype">float</font> &amp;du, <font class="keywordtype">float</font> &amp;dv)<font class="keyword"> const</font>
00042 <font class="keyword">                </font>{
00043                         du = 0.01f * sinf(25.f * <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> + <a class="code" href="structNL3D_1_1CSinWave.html#m0">Phase</a>);
00044                         dv = 0.05f * cosf(19.3f * <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + <a class="code" href="structNL3D_1_1CSinWave.html#m0">Phase</a>);
00045                 }
00046         } <a class="code" href="namespaceNL3D.html#a40">_SinWave</a>;
00047 
00048         
00049 
00050 
<a name="l00051"></a><a class="code" href="classNL3D_1_1CHeatHaze.html#d0">00051</a>         <font class="keywordtype">void</font> CHeatHaze::performHeatHaze(uint <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>, uint <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>, CScene &amp;<a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>, IDriver *drv)       
00052         {
00053                 <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> m  = <a class="code" href="driver__opengl__extension__def_8h.html#a383">s</a>.getCam()-&gt;getMatrix();
00054                 <a class="code" href="classNLMISC_1_1CMatrix.html">NLMISC::CMatrix</a> im = m.<a class="code" href="classNLMISC_1_1CMatrix.html#z293_7">inverted</a>();
00055 
00056                 <font class="comment">// compute the shape of the horizon</font>
00057 
00058                 <font class="comment">// first we compute the direction of the world up vector in the viewer basis.   </font>
00059                 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> up = im * <a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>;
00060                 <font class="comment">// project onto the I and K vectors</font>
00061                 <font class="keywordtype">float</font> upNorm = (up.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> * up.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a> + up.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a> * up.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>);
00062 
00063                 <font class="keyword">const</font> <font class="keywordtype">float</font> threshold = 10E-4f;
00064 
00065                 <font class="keywordflow">if</font> (upNorm &lt; threshold) <font class="keywordflow">return</font>; <font class="comment">// the viewer is looking above or below  himlself</font>
00066 
00067                 <font class="comment">// Compute the right vector. This is done by intersecting the horizon plane with a near plane. </font>
00068                 <font class="comment">// to do this, we transform the horizon plane into the view basis.This may be optimized, but is not critical.</font>
00069                 <font class="comment">//</font>
00070                 <a class="code" href="classNLMISC_1_1CPlane.html">NLMISC::CPlane</a> h;
00071                 h.<a class="code" href="classNLMISC_1_1CPlane.html#z305_0">make</a>(<a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>, <a class="code" href="classNLMISC_1_1CVector.html#p0">NLMISC::CVector::Null</a>);
00072 
00073                 h = h * m; <font class="comment">// note : this multiply by the transposition of m</font>
00074 
00075                 <font class="comment">// intersect with near plane : we got y = 0, which gives us, as a right vector :</font>
00076                 <font class="comment">// if c is not 0, we got : x = 1 and z = (-a - d) / c as a working solution.</font>
00077                 <font class="comment">// Else we got x = (- d - c )/ a and z = 1</font>
00078 
00079 
00080                 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> right;
00081 
00082                 <font class="keywordflow">if</font> (fabsf(h.<a class="code" href="classNLMISC_1_1CPlane.html#m2">c</a>) &gt; threshold)
00083                 {
00084                         right.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>(1, 0, (h.<a class="code" href="classNLMISC_1_1CPlane.html#m0">a</a> + h.<a class="code" href="classNLMISC_1_1CPlane.html#m3">d</a>) / - h.<a class="code" href="classNLMISC_1_1CPlane.html#m2">c</a> );
00085                 }
00086                 <font class="keywordflow">else</font>
00087                 {
00088                         right.<a class="code" href="classNLMISC_1_1CVector.html#z332_0">set</a>( (h.<a class="code" href="classNLMISC_1_1CPlane.html#m3">d</a> + h.<a class="code" href="classNLMISC_1_1CPlane.html#m2">c</a>) / h.<a class="code" href="classNLMISC_1_1CPlane.html#m0">a</a>, 0,  1);
00089                 }
00090 
00091                 right.<a class="code" href="classNLMISC_1_1CVector.html#z331_4">normalize</a>();
00092 
00093                 <font class="comment">// now, find a point on screen that lay on the horizon line</font>
00094                 <font class="keyword">static</font> std::vector&lt;NLMISC::CVector2f&gt; poly(4);          
00095 
00096                 
00097 
00098                 <font class="keyword">const</font> sint xCenter = <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a> &gt;&gt; 1;
00099                 <font class="keyword">const</font> sint yCenter = <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a> &gt;&gt; 1;
00100 
00101                 <font class="keyword">const</font> <font class="keywordtype">float</font> horizonHeight = (float) (<a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a> &gt;&gt; 2);
00102                 <font class="keyword">const</font> <font class="keywordtype">float</font> horizonWidth  = (float) (<a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>  &gt;&gt; 2);
00103 
00104                 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> tmp ;
00105 
00106                 tmp = horizonWidth * right + horizonHeight * up;
00107                 poly[0] = <a class="code" href="classNLMISC_1_1CVector2f.html">NLMISC::CVector2f</a>(xCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, yCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>) ;
00108                 tmp = horizonWidth   * right - horizonHeight  * up;
00109                 poly[1] = <a class="code" href="classNLMISC_1_1CVector2f.html">NLMISC::CVector2f</a>(xCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, yCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>) ;
00110                 tmp = - horizonWidth   * right - horizonHeight  * up;
00111                 poly[2] = <a class="code" href="classNLMISC_1_1CVector2f.html">NLMISC::CVector2f</a>(xCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, yCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>);
00112                 tmp = - horizonWidth   * right + horizonHeight  * up;
00113                 poly[3] = <a class="code" href="classNLMISC_1_1CVector2f.html">NLMISC::CVector2f</a>(xCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m0">x</a>, yCenter + tmp.<a class="code" href="classNLMISC_1_1CVector.html#m2">z</a>);
00114 
00115 
00116                 CDeform2d::doDeform(poly, drv, &amp;<a class="code" href="namespaceNL3D.html#a40">_SinWave</a>);
00117 
00118 
00119 
00120 
00121         }
00122 
00123 } <font class="comment">// NL3D</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>