Dripping Paint From Brush

Discussions about the use of Realflow
Posts: 3
Joined: Fri Sep 07, 2018 5:12 pm

Dripping Paint From Brush

Postby DJ_Dhrub » Sun Sep 09, 2018 7:46 am

I wanted to create an effect like where someone is putting a brush in a Paint container then after a second getting it out.
I could not achieve it by any means. The tendrils are missing, sometimes the Paint isn't sticking to brush.
Currently, I am using RF Standard Particles.
Settings for the Particles Image
Settings for the Brush HeadImage
Here is the example

Here is the video link as well

Please help me out I need this badly.

Posts: 45
Joined: Mon Jun 21, 2010 10:22 am

Re: Dripping Paint From Brush

Postby ChriFF » Mon Sep 10, 2018 11:37 am

I can't see the images, but the video link is working.

"sometimes the Paint isn't sticking to brush".
I do remember sth. about the "Sticky" parameter not working well with animated geometry, maybe that's the problem. I think it's even stated somewhere in the Help.

I think this was solved for Dyverso though, so i'd try the Liquid-PBD solver, maybe it works well for this.
Then use a very high "Sticky" value for the object
And also check the "DY Interact Distance". This is the area around the surface in which the particles will be influenced/attracted by the object. Make sure that this value is not too high, because then the particles would build up to a big blob around the brush.
If it's too low, no particles would stick to the surface.
What you want is a thin area around the brush that makes the particles stick to the brush, and use a high Sticky value to make a thin paint layer around the brush.
A high surface tension and some viscosity (it's called "Damping" in the Liquid-PBD solver...) for the particles ahould lead to the dripping effect.

That's what i'd try.

Posts: 3
Joined: Fri Sep 07, 2018 5:12 pm

Re: Dripping Paint From Brush

Postby DJ_Dhrub » Mon Sep 10, 2018 2:27 pm

Whatever you mentioned didn't help a bit. Sorry, the images aren't opening I would suggest just use Open image in new tab.

User avatar
Posts: 798
Joined: Thu Nov 03, 2011 11:28 pm

Re: Dripping Paint From Brush

Postby Oldcode » Mon Sep 10, 2018 3:16 pm


Here are some settings that may get you stared. I use this for sticky mud and tar.

1. Use Dyverso SPH
2. Set Viscosity to 200
3. Geometry Settings: For each object you want the particles to stick to.

Friction 1.0
Bounce 0
Sticky at least 100
Roughness 0.1
Interaction 1.0

Here you can see how it works and how the fluid drips off the object.

http://www.mediafire.com/file/dwu37f9tw ... Sticky.wmv

Good Luck,
"My sword and my service are yours."

"Then forever remind him of his vow, Knight of the Old Code."

Return to “Realflow”

Who is online

Users browsing this forum: No registered users and 0 guests