Hello,

I'm trying to use a paint node on some terrain geometry that I've imported from maya as a fbx file. The normals are pointing upwards (the right direction), and I've been able to paint successfully with a grid node but not now with my own geometry….?

I've tried adding a facet node as well as a convert node (mesh, polygon), with no luck.

When I select the paint node and mouse over the geometry I don't get the painting icon and the message at the bottom is the same as when it's working with a normal grid node. Any suggestions on how to get the paint node to work would be greatly appreciated.

thanks,

James

Hmm that's strange. How big is your terrain? If you scale it down to be about 10 units across can you paint on it then?

My terrain is very small, smaller than the default grid. I ended up solving the problem by creating a grid of the same size and then used a ray node to copy the height attributes to the terrain and now I can paint just fine. I'm trying to use houdini in a more procedural way by placing random rocks in my scene with a paint operation.

Oh, interesting. By chance does scaling your terrain up to be roughly the size of the grid allow the paint operation to work?

Ok, finally figured out the real problem. I had two xform nodes in between my paint node and my copy node. As soon as I disabled the xform nodes, the paint icon reappeared and worked without the previous setup.

You have clicked the “Show Handle” icon prior to painting?