Labs Flowmap Tools
This tool is part of the FREE and open-source toolset in Houdini called SideFXLabs. The flowmap tools in Labs allow for procedural flowmaps to be generated inside Houdini or using Houdini Engine in any of the plugins. This makes creating flowmaps far easier, while also preserving the ability to art-direct the results through manual work. The tools also come with ways to preview the flowmap in action from within Houdini to reduce the need for Engine I/O for testing purposes. For more information on SideFXLabs and how to get the tool visit: https://www.sidefx.com/products/sidefx-labs/
Flowmap by https://www.artstation.com/estephens
Thumbnail & Result background from: https://www.unrealengine.com/marketplace/en-US/product/stylized-forest-03
The result of the generated flowmap in engine. The flowmap is driven by a texture generated in Houdini.
A run-through of the scene used to generate the flowmap. All aspects of the process are completely procedural, and even allow for some manual tweaks using the flowmap brush.
An overview of all the different Flowmap SOPs in Labs.