[Radiance-general] Strange problem using -vtl to cut sections
Westling, Robert
[email protected]
Thu, 11 Jul 2002 14:14:32 -0400
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Hi,
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I am cutting plan and sectional views through a model for radiance
images, illuminance images using falsecolor, and point data output using
rtrace and have found the following problem: light is showing up inside
of fully closed boxes. For instance in plan view using -vtl and -o to
get a plan cut 4' off the floor I find that light appears to be
propagating inside of volumes with no holes. Running rtrace in these
areas also shows that a small amount of light is bouncing around inside
these solid shapes. =20
=20
The solution I plan on using is to model a flat plane at the bottom of
each of these spaces and give it a completely black plastic finish.
However it is a little disconcerting that light is entering the inside
of these boxes.
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Any ideas on the subject would be greatly appreciated.
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Thank you,
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Robert Westling
steinerwestling
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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I am cutting plan and sectional views through a model =
for radiance
images, <span class=3DSpellE>illuminance</span> images using <span =
class=3DSpellE>falsecolor</span>,
and point data output using <span class=3DSpellE>rtrace</span> and have =
found the
following problem:<span style=3D'mso-spacerun:yes'> </span>light =
is showing
up inside of fully closed boxes.<span style=3D'mso-spacerun:yes'>
</span>For instance in plan view using –<span =
class=3DSpellE>vtl</span> and
–o to get a plan cut 4’ off the floor I find that light =
appears to
be propagating inside of volumes with no holes.<span
style=3D'mso-spacerun:yes'> </span>Running <span =
class=3DSpellE>rtrace</span>
in these areas also shows that a small amount of light is bouncing =
around
inside these solid shapes.<span style=3D'mso-spacerun:yes'> =
</span><o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The solution I plan on using is to model a flat plane =
at the
bottom of each of these spaces and give it a completely black plastic
finish.<span style=3D'mso-spacerun:yes'> </span>However it is a =
little
disconcerting that light is entering the inside of these =
boxes.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Any ideas on the subject would be greatly =
appreciated.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thank you,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Robert Westling<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>steinerwestling<o:p></o:p></span></font></p>
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