Re: RF XSI mixing liquids

Date : Mon, 29 Jan 2007 16:55:07 -0000
To : <XSI(at)Softimage.COM>
From : "Duncan Burch" <duncan_burch(at)hotmail.com>
Subject : Re: RF XSI mixing liquids
Well, yes, if it was for a job I would.
But, from a technical point of view, was wondering if there is a way.



Duncan Burch
Lead Lighter and Render TD
www.LumiereStudios.co.uk
+44 (0)7946013460
----- Original Message ----- From: "adrian" <adrian.wyer(at)fluid-pictures.com>
To: <XSI(at)Softimage.COM>
Sent: Monday, January 29, 2007 4:45 PM
Subject: Re: RF XSI mixing liquids



film it?

Adrian Wyer
Fluid Pictures
33 Glasshouse Street
London
W1B 5DG
T: +44 (0) 207 434 5133
www.fluid-pictures.com
----- Original Message ----- From: "Duncan Burch" <duncan_burch(at)hotmail.com>
To: <XSI(at)Softimage.COM>
Sent: Monday, January 29, 2007 4:28 PM
Subject: Re: RF XSI mixing liquids



Hey Chris,
Thanks for your reply.
I've got two liquids to mix together into one mesh, using weighmaps as you can see here. Even though the mix works, I guess, not exactly how I wanted. The colours dont really ever blend properly, but it is using one mesh, so its a step forward.
http://www.lumierestudios.co.uk/lumiere_site/33_research/1_Fluids%20.%20Particles/10_Fluid/mix_liquids_v01.mov


This next version shows what happens if each liquid has its own mesh, obviously the colours aren't ever going to mix, if only they could, would look really nice.
http://www.lumierestudios.co.uk/lumiere_site/33_research/1_Fluids%20.%20Particles/10_Fluid/35_paint_balls.swf


Any ideas?

Cheers Dunk


Duncan Burch
Lead Lighter and Render TD
www.LumiereStudios.co.uk
+44 (0)7946013460
----- Original Message ----- From: "Chris Marshall" <chris(at)eclipsecreative.co.uk>
To: <XSI(at)Softimage.COM>
Sent: Monday, January 29, 2007 10:03 AM
Subject: Re: RF XSI mixing liquids



Duncan,

That *is* the way you mix Realflow colours in XSI! They just never mix very well.

I think what's happening is that each particle never actually becomes 'mixed' with any other. So, if you have a black particle moving next to a white particle, you get grey (more or less), but if they move apart again, they return to their original black and white properties. This, of course, is bananas. Once mixed to 50% of each, they should always stay like that, but it just doesn't happen that way.

This is with Realflow 3. I don't know if this is different in 4.

Chris



Duncan Burch wrote:
Hi all
I while back someone posted a rendertree screenshot from NextLimit i think, showing how to get mixed liquids to properly mix colour in xsi.
Does anybody remember the link to that jpg?
Basically this post:
http://www.xsibase.com/forum/index.php?board=6;action=display;threadid=25063;start=0#msg177860


I can get liquids to mix in xsi with weighmaps, but not actually colour changes, so say white and black liquids become grey etc

cheers
Dunk


Duncan Burch Lead Lighter and Render TD www.LumiereStudios.co.uk +44 (0)7946013460



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