Hi.
I have problem sourcing velocity with new nodes (Fluid source SOP). It has only “Stamp points” mode and if i have for example Primitive Sphere (only 1 point at the center) or simple box (8 points) i don't get proper velocity volumes.

What is the right way for sourcing velocity from such primitives (or volumes)? I ended up scattering points, transforming them with initial geo and sourcing velocity from them.

On the other hand there is old way - use source relationships and enable them in solver. In this case i don't need even v attribute. All i need is change type to Point Velocity in Relationships tab of the solver and it somehow calculates proper field.
As i understand it is Gas Calculate under the hood, which uses index field of all the sources (all dyn. objects in source relationships) and for EVERY(?) voxel computes velocity. Am i right? Or how does it work?

I attached simple example (used source relationships).
How can i achive same result with new nodes (smoke follows movement of the box) without changing box object to add more points to sample vel field.


BIG thanks in advance.