"Trevor G Quayle" <Tin### [at] hotmail com> wrote:
> I was doing some tooling about with the latest lighting challenge from 3DRender
> (http://forums.cgsociety.org/showthread.php?f=185&t=955407) which features a
> movie theatre. One of the maon aspects of lighting here will be that coming
> from the screen. I first started using radiosity with an image projected on the
> screen, however it was becoming apparent that it may take some really high
> quality settings to get good results. I then though of using an array of area
> lights created from the projector image. I had already done a lot of the
> mathwork in my lightdome work, so I did some quick conversions to making a
> planar version of it with some nice results.
>
> In the attached image, the first part is radiosity with some low quality
> settings. The second is using the arealight array (16 area lights, 4x4 each).
>
> -tgq
Next stage is the projector lighting. I think this is looking OK. I don't have
the screen area light applied, just a single point light to add a little bit of
additional illumination. This is the part where I was wondering about the light
attenuation, realistically speaking, the brightness of the projector in the
first 1/5 distance is a little too bright (~30%).
-tgq
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