Subject:
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Re: Lights on the wall
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Newsgroups:
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lugnet.cad.ray
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Date:
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Thu, 26 Aug 2004 13:27:51 GMT
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Viewed:
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2788 times
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In lugnet.cad.ray, Allister McLaren wrote:
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Hi all,
I’m in the process of creating a render of a little scene. There are two
walls that I want to put downlights on. I’ve created spotlights at each
point, but for some reason they are not showing up.
The walls and floor are created as submodels and referenced into the main
model multiple times. All the lights are in the main model. I tried removing
the floor and replacing it with a normal povray floor, and the lights show up
on that, but still not the wall.
see the problem?
Why would this be happening? I’ve had no problems previously with lights not
showing up on submodels.
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I’m no expert in this field, but in POV, the surfaces is higly reflective, so if
the angle of the light is too flat, no light will reach the camera at all (it’ll
just be reflected up and down between floor and celing.
My guess is that the thing you achieved by changing to a pov-ray floor was
another ambience/diffusion setting than the standard one. (probably a higher
diffusion=lightspot left on the surface). Personally I’ve got that kind problems
trying to highlight a detail with the fastrad.ini and had to shift back to
quickres for that picture.
There’s a lot about it in the helpfile, but you might consider raising the
diffusion of the walls, and you should definitly consider adding some thin fog
like in the “streetlight” example in the helpfile. It might also help if the
cones were turned a little into the walls: that would give a little steeper
angle of the reflected light, that might reach the camera. Raising the falloff
might also help. (BTW, are you sure that the lightcone is actually reacing the
pillars?)
But you’re moving into a very difficult field of POV-Ray there, and you should
consider uploading the code to brickshelf, or at least a bigger picture.
And I’m not even sure if the problem is getting light on the pillars or the
walls?
-NB
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Message has 1 Reply:
 | | Re: Lights on the wall
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| (...) I think you're right. (...) That seemed to help. (...) Tried that and it didn't make a lot of difference. (...) Nup. After a bit more reading of the helpfile and trying different things, the one that made the most difference was adjusting the (...) (20 years ago, 30-Aug-04, to lugnet.cad.ray, FTX)
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Message is in Reply To:
| | Lights on the wall
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| Hi all, I'm in the process of creating a render of a little scene. There are two walls that I want to put downlights on. I've created spotlights at each point, but for some reason they are not showing up. The walls and floor are created as submodels (...) (20 years ago, 26-Aug-04, to lugnet.cad.ray, FTX)
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