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In Solaris, I’m using RenderMan Lama shader displacement via Material Library. Displacement is evaluated at render time and renders correctly. When scattering rocks with Asset Instancer, instancing happens on the pre-displaced SOP geometry, so once shader displacement is applied the instances float or intersect the surface. Questions: Can Asset Instancer evaluate or reference render-time shader displacement? Is there any supported way to procedurally link Material Library displacement parameters to instancing so lookdev changes stay aligned? Or is SOP-level proxy displacement / ray projection the expected production workflow? I’m aware render-time displacement isn’t available at SOP level; mainly looking to confirm best practice, not hacks. Houdini 19.5/20.x

Guys! a huge bow down to you, I need time to digest your ideas 

Here is an approach combining resample nodes with sweep, noise and polycut. The VEXpression offsets the noise for each line. morse.hip

Yes I think, maybe I just need some density controlling algorithms or short way to just control density. Maybe I am overcomplicating things. Thank guy for info. Going to check this out

You can also use the clip node (clip attribute). The attribute can be generated by some random function (combined sin, cos, ...). You can clip your curve into two complement sets. One of these parts can be resampled for the dots and the other for the lines (ribbons). Here is a file with some ideas.  clip_carve_lines_dots.hipnc