Thanks Mark, I tried moving the object vertically but ended up with obvious edges or black sky (I can probably work on this). I will play with some of the ideas you have posted. Please let me know if you come up with any other gems.
I am Ok with VSL if I have some barebones I can evolve.........its getting the original concept working that I'm often at a loss with. Chris ----- Original Message ----- From: "Mark Heuymans" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, August 04, 2007 4:02 PM Subject: Re: AW: Clouds > At 17:35 2-8-2007, you wrote: > >Hello Mark, > > > >I've been having great fun with your volumetric cloud material. > >Is there a way of setting the cloud base height from the ground ? (Y start > >position). > > > Hi Chris, > > Glad to see someone is using it! > You could try to move the cloud object (a squashed sphere) > vertically, the last material I uploaded doesn't have vertical control. > > Better (haven't tested this yet): add something like in the > 'simplegroundfog' material I attached before: > > turbidity *= Curve(Mapcoords.Y) > > or simply apply this like in the groundfog project, use a correct > parrallel mapping primitive that defines base height. > > > > > >Also I tried to combine a dark cloud with an identical light coloured cloud, > >offset in the Y direction by a small amount, to try and mimick self > >shadowing (without the render overhead), but so far I have not been able to > >get a working combination or to give the light coloured cloud priority. Any > >thoughts/solutions on this idea ? > > > I don't know what happens if light and dark clouds are mixed, > interesting idea, never thought about it ;) > Maybe the self-shadowing is possible if sampling and noise octaves > are turned down a bit, I remember an animation of a self-shadowing cloud cube.. > > Frankly, I think volumetric clouds can be very useful but are pretty > limited, I'm thinking about trying something with particles. > > > > >Thanks, > > > >Chris Sellars > >Morsel Animation > > > thanks for the input, I'll try out some more stuff, > > -Mark H > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.476 / Virus Database: 269.11.4/935 - Release Date: 03/08/2007 17:46 > >
