This looks like a nice resource, thanks for sharing! I have been meaning to experiment with creating wetmaps, but have not had a chance to try it out yet.
This is something we are currently experimenting with for a tutorial. I don’t entirely understand how the method works myself, I’m not very knowledgeable with these features/areas of Blender and have not tried out the method.
So far, these videos/comments are what I have found about the method:
Sorry that I am unable to give more exact details on how this effect is achieved. Perhaps a more experienced Blender would be able to share their knowledge.
And here’s a quick update on the current status of the FLIP Fluids addon! It’s been a while since I have updated in this thread.
New Experimental Build Available Nov. 22nd
We will soon be updating the Blender Market product to include experimental builds of the current state of the next version. This will be to give you access to the latest features! We will be uploading the first experimental build on Thursday. Some exciting new content will include:
In version 1.0.4 we added some performance improvements to the surface mesh generator. Since then, these performance techniques have been testing very well on other users’ systems. Lately we have expanded using these techniques to other simulation calculations to boost performance. We have also been carefully looking through the code to see where we can add more multithreading improvements.
We’ve spent the last two weeks heavily optimizing the FLIP Fluids engine, inserting over 50 timing probes to see where we can shave off fractions of a second! After 2500 lines of code added, 1000 removed, check out these incredible CPU and timing improvements:
New Feature: Surface Tension
An exciting new feature is the surface tension solver that we have been working on!
Can you tell us more about what surface tension would be?
Surface tension can be thought of as a force that pulls a mass of fluid inwards. The force acts on only the surface of the fluid and depends on the curvature of the surface. Sharper curvature -> stronger force. If a blob of fluid is left to float in zero-gravity, the surface tension force will eventually pull the fluid blob in to form a perfect sphere.
Surface tension can be imagined as if there is a stretchy thin film wrapping the fluid mass. Suface tension could be viewed like a water balloon where the rubber balloon is the stretchy film pulling the mass of water together. If you throw the water balloon, it will jiggle/oscillate through the air as the balloons tension tries to pull together the mass of fluid.
Surface tension effects in nature such as droplets forming/merging, dripping strands, thin fluid sheets, is more noticable when viewed up-close or in slow-motion. When viewing a liquid from a distance, such as looking at the waves of the ocean, surface tension effects can be less noticable. In simulation, having a surface tension parameter helps improve realism for these small-scale effects. Without a surface tension force, splashes tend to be more chaotic since there is no cohesive force to pull the fluid together, which may not look realistic for a small scale effect.
Within the addon, the surface tension parameter will be located in the World panel under the viscosity setting. The parameter will work similarly to the viscosity setting: there will be a checkbox to enable the surface tension solver and a number parameter to control how strong the surface tension force will be.
Here are some animations/images we’ve created while testing the the new solver:
For the experimental build, we will also be including example .blend files of the animations above to get you started with surface tension.
Minor Tweaks and Features
There will also be included some small bug fixes, tweaks, and features:
Blender Market Black Friday Sale
During November 23rd to 26th, the Blender Market will be having a BlackFriday/CyberMonday sale. A whole tonne of awesome products will be on sale for 25% off, so this is the time to get those plugins/assets you’ve been eyeing!