[Sidefx-houdini-list] instance light + light mask

Peter Bowmar pbowmar at gmail.com
Thu Jul 7 15:49:57 EDT 2011

Hi Larry,

As I recall, this is tricky but possible. The issue is that the
instanced lights get renamed by the instancer. I think you have to
look inside the IFD file to get the "actual" name of the instanced
light... If the light is "MyLight" in the Houdini file, it might
become "MyLight-1" or something but I forget exactly. Sorry I can't
help more...


Peter B

On 7 July 2011 09:55, Larry Giunta <larry at gcreativestudios.com> wrote:
> hello all. I hope this is a simple question.
> I'm instancing a light to an object with one point ( because the light needs
> to be placed inside/stay with a translucent object animated in DOPs)
> I also have other lights in the scene.
> I want this one object to only be illuminated by the instanced light and not
> any other lights in the scene.
> However, I'm not sure how to enter this in the light mask.
> It seems that if I enter anything other than * I don't get any illumination
> on that object.
> I've tried entering the instanced object and the source light explicitly.
> I've also tried entering * and then eliminating lights with  a ^ string ....
> but unless I enter a wide open * I don't seem to get any illumination on
> this surface.
> Any thoughts??
> Thanks,
> Larry
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Peter B

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