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strange light distribution
Posted: Mon Oct 13, 2014 1:56 pm
by gueoct
i am simulating a light tube parallel to a wall.
The light tube has a black body emission in the emission slot.
for some reason the emission is hundreds of times stronger at the ends of the tube.
Does any one know why?
Re: strange light distribution
Posted: Mon Oct 13, 2014 2:05 pm
by glimpse
it has something to do with polygon sizes..-I don't use mesh emitters so often (just on single poly planes, to mimic softboxes),
but I've noticed that if I scale them or tweak their size I have to tweak values too =)
Re: strange light distribution
Posted: Mon Oct 13, 2014 2:25 pm
by Goldisart
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Re: strange light distribution
Posted: Mon Oct 13, 2014 10:42 pm
by gueoct
glimpse wrote:it has something to do with polygon sizes..-I don't use mesh emitters so often (just on single poly planes, to mimic softboxes),
but I've noticed that if I scale them or tweak their size I have to tweak values too =)
i increased the number of height segments on that cylinder to have equal polygon size - without luck...
Re: strange light distribution
Posted: Mon Oct 13, 2014 11:03 pm
by Karba
Set the same material id to every cylinder part.
Re: strange light distribution
Posted: Tue Oct 14, 2014 8:24 am
by gueoct
Karba wrote:Set the same material id to every cylinder part.
Thanks! it works.
BUT: What does it mean?
i did a few tests:
- ?
- :-/
- ??????????????