Forum: Vue


Subject: I need some help...

Elminster_ZK opened this issue on Jul 03, 2005 ยท 16 posts


Elminster_ZK posted Sun, 03 July 2005 at 9:49 PM

Okay, You guys need to help me out. How do I get fog, close to the ground, but at the foreground, near the camera, and still see the scene? When I up the density on the fog, it blots out the scene in grey. I adjust the fallout, but it doesn't help. How do I get close, low, dense fog but a clear scene. (If I am not clear, imagine mist up to the ankles, like from a smoke machine)

"Walk down the right back alley in Sin City, and you can find anything."


Ms_Outlaw posted Mon, 04 July 2005 at 1:04 AM

I haven't really tried it, but know some use spheres. But some one might know the atmosphere way.


bruno021 posted Mon, 04 July 2005 at 3:33 AM

Spheres or metablobs with volumetric or fuzzy materials are what you need here.



Elminster_ZK posted Mon, 04 July 2005 at 7:07 AM

Thanks alot, I will try.

"Walk down the right back alley in Sin City, and you can find anything."


Elminster_ZK posted Mon, 04 July 2005 at 7:20 AM

Wow, that worked GREAT! Thanks, you two! Sweet! Fog!

"Walk down the right back alley in Sin City, and you can find anything."


spedler posted Mon, 04 July 2005 at 3:02 PM

You can do this with the atmosphere using the standard atmosphere model. The attached image shows a series of renders using fog density = 0 (yes, zero) and with colour set to a light grey. The fog is set to gather at low altitudes.

The top three renders have falloff set to 95% with different altitudes - this seems to be very altitude-sensitive. The lower three have the altitude set to 25 and the falloff varying from 80% to 90% - this gives much more subtle control. Interestingly, by making the fog gather at high altitudes you can get fog clinging to the ceiling but clear on the ground - could be useful for smoke in a fire!

fogtests.jpg

Steve


Ms_Outlaw posted Mon, 04 July 2005 at 4:20 PM

BOOKMARK!! Thank you! that works great.


Elminster_ZK posted Mon, 04 July 2005 at 5:33 PM

Wow, that is perfect! Thanks a million, spedler!

"Walk down the right back alley in Sin City, and you can find anything."


Elminster_ZK posted Mon, 04 July 2005 at 5:38 PM

Man, just tried it, and it works great. You should make a tut or something, this is good stuff!

"Walk down the right back alley in Sin City, and you can find anything."


animajikgraphics posted Tue, 05 July 2005 at 9:48 PM

Thank you for this great info! Love this forum!



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Ms_Outlaw posted Wed, 06 July 2005 at 3:59 AM

Figured we should bring attention to this great tip hidden in here.


Peggy_Walters posted Wed, 06 July 2005 at 8:14 AM

Wow, thanks for the tip!

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spedler posted Wed, 06 July 2005 at 12:56 PM

Thanks folks, glad you liked it. I'd do a fuller tut, but there isn't anything more to say really - it's so simple but gives good results. The only problem is that it doesn't work with the volumetric atmosphere model, but you can't have everything :-)

Steve


Dragontales posted Wed, 06 July 2005 at 1:52 PM

We should have this added to the backroom section. Who does that?


Ms_Outlaw posted Wed, 06 July 2005 at 4:27 PM

fog density = 0 (yes, zero) That there is the biggest help. Who'd think you want fog to turn off fog lol.


ChuckEvans posted Thu, 07 July 2005 at 3:17 PM

Yeah, Ms_Outlaw, doesn't make much logical sense to me, either. shakes head