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By default, Hybrido core fluid particles are not able to create wet-dry maps. RealFlow comes with a graph to establish this kind of interaction at simulation time, but what if you are not so tech-savvy? If you are a user of a RealFlow version with our innovative Dyverso solver then there is good news:

Dyverso allows you to create, control, and export wet-dry maps from Hybrido simulations in a post process.

 

Wet-dry maps from a Hybrido simulation.

Scene Preparation

Create a scene with a few objects, a “Gravity” daemon, and a Hybrido domain plus emitter. It is important that the objects have proper UVs!

The main requirement is that your Hybrido domain exports RPC files:

  • Go to “Export Central”, or even easier, to the Hybrido domain’s “Export” tab, and check if “Particles cache (.rpc)” is enabled.
  • Remember the name of the Hybrido domain node – normally, this is “HY_Domain01”.

 

 

Now simulate the scene including all fluid-object interactions. Bear in mind that MultiBodies do not support wet-dry maps, so always use individual objects.

The Dyverso Scene

Is the Hybrido simulation ready? Great! So let’s go ahead with a new project. All you have to do is to add a Dyverso domain and import the objects:

  • Activate Node Params > Texture > WetDry texture for all objects
  • The objects must turn black. If not, go to Node Params > Display > Texture > WetDry.
  • Adjust the associated parameters (“Resolution”, “Ageing”, etc.).
  • Open the “Export” tab and enable “Wetmap texture (*)” for all objects, choose a file format.

 

 

Activate the objects' wet-dry map features.

 

In the next step, the Hybrido RPC files will be connected to the Dyverso domain:

  • Dyverso domain > Node Params > Export > (.rpc) path
  • Rename the Dyverso domain to the Hybrido domain’s name (“HY_Domain01” by default).
  • Click on the icon and go to the folder with the Hybrido RPC files.

 

 

Press Alt + U to update the cache and scrub the timeline – the files are now available:

 

 

The last action is very important, because we want to prevent the original Hybrido files from being overwritten:

  • Set the Dyverso domain’s simulation state to “Cache” (yellow rocket icon).

 

 

Reset and simulate. If you

  • are not happy with the results simply change the parameters, and start a new simulation
  • should see a pale grey texture without patterns then your UVs are most probably wrong.

 

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