Jump to content
reeson

Heightfield Erode on geometry/VDB

Recommended Posts

Hey guys. Is there a way to use heightfield erode on a geometry or VDB. Let's say if I have a box, and I would like to apply erosion, how would I do that? Cheers!

Share this post


Link to post
Share on other sites

If you treat it as part of a heightfield you can erode it, then get it out as a polygon (printscreen and hip file attached):

 

eroded box.JPG

eroded box.hiplc

Edited by anicg
  • Like 1

Share this post


Link to post
Share on other sites

Thank you. I was looking into heightfield project node, but what if you want to erode a more complex geo, like this cube?

b.PNG

Share this post


Link to post
Share on other sites

The Height project sample some ray to the geo, you have few options so i will "catch" to direct the raycasting but obviously it will not work great for small concav/convex in between are, it's mainly design shape roughly the big mass of your landscape or blends asset done in sop or whatever.

 

* You would have to write in VEX an erosion algorithm .

* Run different sim in houdini FX like rain, wind to affect the topology of your model...

* You could consider to loop split/slice your model , project each and try to combine all.

* Unfolding each big planar sector or your model , project , do your heightfield erosion, convert it back to surface sop and reverse the unfolding.

* Or... Open zbrush and apply few brush strokes and get back to houdini without telling anyone but off course it s not procedural :)

I don't know a trivial solution, maybe some other people have other idea, there are a bunch of really great smart minds here so

________________________________________________________________

Vincent Thomas   (VFX and Art since 1998)
Senior Env artist & Lighting & MattePainter & Creative Concepts

 http://fr.linkedin.com/in/vincentthomas

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×