Hey folks,

I'm just trying to figure out why a surface extrusion I'm doing in Maya isn't being lit properly.

So, I have a nurbs circle at the origin that I'm trying to extrude around a curve :

After selecting the circle, then shift-selecting the curve the resulting extrusion looks like this :

It looks like the geometry is being lit from the inside out as the interior of the extrusion looks fully lit & shaded.

Any idea what I'm doing wrong here?

Thanks!

t looks like the geometry is being lit from the inside out as the interior of the extrusion looks fully lit & shaded.

I don't know maya, only blender, but I guess that the normals are inverted. I typically select all affected faces and flip the normals. In blender you have although an option to re-calculate all normals to point outward, I guess that maya has a similar option.

but I guess that the normals are inverted

Yeah definitely what it looks like - no idea why the normals are flipped though - or how to recalculate them :)

Hmmm, managed to fix it by flipping the normals of the nurbs circle I extruded around the curve... I wonder if I've been building my model upside down :)

I wonder if I've been building my model upside down

It just happens from time to time. Sometimes the tool can't predict the right normal direction (eg. when filling holes/connecting points etc) or you accidentally use a negative value for scaling.