Is there a tool to interactively manipulate a 3D vector field of about 300^3 dimension ? I read something about the new comb tools manipulating vector fields ..
I have this procedurally generated vectorfield and need something to enable an artist to change length and direction of certain regions of this vectorfield ?
At the moment I am working with mask scalar fields and blending between different vector field to achive my goal, but the process it totaly unsuited for the artists in the team ..

I would imagine something like a brush working on a slicer with attached streamer .. is it possible to implement something like that in HOM or would it need HDK to do the job ?

The Paint tools on the Volume shelf work for density and SDF fields. I think you'd need to make your own similar HDA to paint vector fields.