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<p class="MsoNormal"><span lang="EN-US">Hi list,</span></p>
<p class="MsoNormal"><span lang="EN-US">I have tried to add a description of the
sun to my ibl environment generated from a chrome ball. However the ‘added’
description of the sun is not taken into account. If anyone can guide me on how
to proceed I would really appreciate it.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks!</span></p>
<p class="MsoNormal"><span lang="EN-US">Anne</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Below I have given you information on</span></p>
<p class="MsoListParagraphCxSpFirst" style="text-indent: -18pt;"><span style="" lang="EN-US"><span style="">1)<span style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><span lang="EN-US">Description of the lighting
environment in Environment.rad</span></p>
<p class="MsoListParagraphCxSpLast" style="text-indent: -18pt;"><span style="" lang="EN-US"><span style="">2)<span style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><span lang="EN-US">The commands I have used to run
the environment – with and without mksource.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">For mapping the chrome ball image to the environment
I have applied the following approach, taken from the ‘High Dynamic Range
Imaging Book’:</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US"><br></span></p><p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">#------------------------------------------------------------------------- <br>
</span></p>
<p class="MsoNormal"><span style="" lang="EN-US">Ad 1) Environment.rad:</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">void
colorpict hdr_env<br>
15 red green blue <a href="mailto:C_20091002ball@10h44_tilt38.hdr">C_20091002ball@10h44_tilt38.hdr</a>
mirrorsphere.cal sb_u sb_v -i 1 -rx 90 -rz 8 -ry 0<br>
0<br>
0<br>
</span></p><p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US"><br></span></p><p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US"># specify a "glow" material that will use this image<br>
hdr_env glow env_glow<br>
0<br>
0<br>
4 1 1 1 0<br>
<br>
env_glow sphere sphereenv<br>
0<br>
0<br>
4 0 0 0 -1000<br style="">
<br style="">
</span></p>
<p class="MsoNormal"><span lang="EN-US">#To this I have added the description of
the sun, the location of the sun has been derived from the chrome ball image:</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">#
simulation of the sun, radiance and location<br>
void light lum_sun<br>
0<br>
0<br>
3 46700 46700 46700
</span></p>
<p class="MsoNormal" style="margin-bottom: 12pt;"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">lum_sun
source sun<br>
-rx 90 -rz 8 -ry 0</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">0</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">4
0.6410 0.5537 -0.5315 0.5323</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">#----------------------------------------------------------------------------------------------------<br></span></p><p class="MsoNormal"><span lang="EN-US">Ad 2) When running the environment I have
used following approach:</span></p>
<p class="MsoNormal"><span lang="EN-US">Without mksource, just an oconv:</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">oconv Environment.rad > ibl1.oct</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">With mksource:</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">oconv Environment.rad > iblmksource.oct</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">mksource –a 0.5 iblmksource.oct >
srcs.rad</span></p>
<p class="MsoNormal"><span style="font-size: 10pt; color: rgb(54, 95, 145);" lang="EN-US">oconv -i iblmksource.oct srcs.rad
> ibl1.oct</span></p>
<br clear="all"><br>