volumetric light HELP - part2

[ozzie]

Hi

I know that the topic is on the forum but I can't find an answer for one question:
Can I create such light beams. As you can see there's no fog at all but the light beams are just fine, and the scene is quite bright:

[rws]

Re: volumetric light HELP - part2

There's plenty of smoke in the air and some very bright spot lights behind a mask. The performers also have a spot light on them.
You can use fog effect in world panel, with similar spot lights and mask to achieve a like effect.

I have used fog distance of 75 and high contrast levels adjustment to achieve similar balance for example. You might adjust distance/ light power for desired contrast etc.

[voytov]

Re: volumetric light HELP - part2

Hi,
I ran onto new problem considering volume lights/fog.
I'm unable to exclude the fog (fog gizmo geometry) from being illuminated by the lights that I chose to act like this. Every light will interact with every fog in scene no mater what I declare in light's Exclude/Include parameter window..

I'm almost sure it was working before..
Andrey can you inspect that please?

[voytov]

Re: volumetric light HELP - part2

..I checked this. The truth is, selective lighting for fog containers never worked before. And I'm confused now:
1. should it work at all (maybe somebody can check it under MAX)?
2. What is the planned effect of "Light mode:" "Use per-gizmo lights" setting??

Please help!

[voytov]

Re: volumetric light HELP - part2

Hmm.. Currently I've achieved selective fog lighting by assigning lamp name in fog settings ("Lights" slot).. but it only allows one name...
So what if I need a list of lamps to be considered during fog calculation?

[bdancer]

Re: volumetric light HELP - part2

This param supports ';' separated list of object or group names.

[voytov]

Re: volumetric light HELP - part2

Now I realize there was no bug (talking about the overall ability to selective light the fog I was not right that "selective lighting for fog containers never worked before"). I just didn't know the right way of declaring light sets for calculation.

Once again,
Thanks very much for your work Andrey!!

[vrayblend]

Re: volumetric light HELP - part2

You can use fog effect in world panel, with similar spot lights and mask to achieve a like effect.
I have used fog distance of 75 and high contrast levels adjustment to achieve similar balance for example. You might adjust distance/ light power for desired contrast etc.

I'm trying to create a similar effect, but I do not follow your steps.
could you explain better how to do?

[rws]

Re: volumetric light HELP - part2

You can use fog effect in world panel, with similar spot lights and mask to achieve a like effect.
I have used fog distance of 75 and high contrast levels adjustment to achieve similar balance for example. You might adjust distance/ light power for desired contrast etc.

I'm trying to create a similar effect, but I do not follow your steps.
could you explain better how to do?

If you want spotlight halos but not see fog in general, you need a low density fog (ie a high "distance setting") and a VERY bright spotlight.

[ps8]

This param supports ';' separated list of object or group names.

Does this still apply in the 2.69 build? I'm only able to select a lamp/spot from the list.

By the way the latest features are awesome!

[bdancer]

Hm, looks like it's no more possible to edit this list by hand, ok, I'll rewrite this attribute to support Groups then. Thanks for pointing to this )