Hi everyone!

How do I use the UV's that are associated with an Obj mesh file?

Thanks alot!

Hi,
Houdini doesn't treat .obj UVs any different than native geometry. You can check for the presence of UVs by middle-clicking on the SOP nodes of the imported object (the File SOP which brings it in for example). A little window pops up and tells you what attributes are on the geometry. In this case it would probably say: 1 Vertex Attributes: uv
You can look at the actual UV layout by switching to the UV viewport (space+5).

The UVQuickshade SOP is nice for quickly throwing a texture on the model to see how well the UVs are laid out.

To work with UVs inside a VOP shader you can bring them in a few different ways. With the UVcoords VOP, a Shading Layer Parameter VOP, or by using a Parameter VOP (and specifying the type & name of the attribute you want to bring in, in this case a vector named uv). Usually the vector output then gets converted into seperate floats (Vector to Float VOP) and the first & second components are piped into the s & t inputs of the various VOPs that have them (like 2D procedural patterns for example).

Not sure if that's what you were asking, but I hope it helps.

That is exactly what I was looking for!

Thanks a lot!

FBX shader also is very easy to use, you can try it.