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Vue F.A.Q (Last Updated: 2024 Dec 30 8:14 pm)



Subject: Making light gels


Axe555 ( ) posted Thu, 07 June 2001 at 8:17 PM · edited Thu, 23 January 2025 at 6:32 PM

Im trying to fake moonlight shining through a window on a wall. The window isnt visible in the scene, so I made a trans-map to use as a light gel and mapped it to a plane. The problem is, I cant get the light to shine through it properly. The spotlight either shines through completely, forming a circle of light on the wall, or doesnt shine through at all. The trans-map appears to be working correctly as far as actually having a transparent area. Im totally lost on this one. Does anybody have any ideas what I may be doing wrong, or perhaps another way to fake the effect? Thanks, Rich


MikeJ ( ) posted Thu, 07 June 2001 at 9:06 PM

hmmm.... how about a point light? Make the spread on the spotlight larger. Turn off highlights and reflections on your wall and/or give it a lower diffuse setting? I'm not sure what to say that would work, but I would mess around with the highlights, reflections, and especially the diffuse/ambient settings on the wall material first, once I was sure I had my spotlight shining they way it seems it ought to be.



Axe555 ( ) posted Thu, 07 June 2001 at 9:28 PM

file_178089.jpg

This is what I'm working with. At this low light level, it seems as though is should be easy. The transmap on the lantern works fine (first dang thing I've modeled that looks halfway decent!) I think using a point light would throw of the lighting, but then again, nothing else has worked. Mapped material on the wall, Difuse at 60, Ambient at 40, no reflectivity. Rich


Varian ( ) posted Thu, 07 June 2001 at 10:27 PM

Hi Rich, when I did something similar I had the same problem. The way I solved it was to use a very large cube as the wall -- off-camera -- and then use boolean-subtracted cubes to form the windowpanes. Then a point light for the light source. The wall just needs to be large. The windowpane cubes can be grouped together to make them easy to move around the wall to the place you want them. The light will shine through in the proper shape then. Hope this makes sense okay. :)


hein ( ) posted Fri, 08 June 2001 at 12:55 AM

file_178090.jpg

Agree with Varian on this one, give the light what it asks for, something to shine through. "Large" wall, off camera, with a few holes in it, pointlight (powersetting 300+) well out of the way. Added curtains (transp. 40-50) to show that works fine too. Sometimes a few pointlights together work a lot better for a single light effect.


MikeJ ( ) posted Fri, 08 June 2001 at 5:21 AM

I very rarely use the spotlights, but I'm always using point lights. Call me strange, but I've gotten into this habit of turning down materials' abilities of reflecting light when too many point lights washes out a scene with too much light.



Varian ( ) posted Fri, 08 June 2001 at 12:49 PM

Hey Hein, I like the added touch of the curtains! Very cool! :)


Axe555 ( ) posted Fri, 08 June 2001 at 3:41 PM

That definatly makes sense. I'll give it a whirl. Thanks everyone, Rich


Daffy34 ( ) posted Sat, 09 June 2001 at 9:40 AM

Of course, Vue 4 is supposed to be able to render more realistic light gels :) I CAN'T STAND WAITING ANY LONGER!!!! Laurie



Varian ( ) posted Sat, 09 June 2001 at 11:16 AM

:: upending a bucket of cold water over Laurie's head :: :-)


Daffy34 ( ) posted Sat, 09 June 2001 at 11:25 AM

Arrghh!! Phew!!! Thanks Varian...I'm feeling better now ;) Laurie



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