headus 3D tools

[twocust]

basic model of a first floor buiding, 4 seperate pieces within the .obj

drop (d) the floor of the building to UV space and it goes by-by,
never to be seen again.



any idears?


twocust

[twocust]

hmmm...well, I flipped normals on the geometry, then re-saved.

opened it up again in UVLayout and dropped the floor again to UVedit.
still couldn't see it, so I scrolled waaaaay back in z-depth from
UV edit area and a blue line popped up (horizontal across the
bottom of the UV area, since it's orientation is horizontal instead
of vertical for the flattening algo). So I managed to flatten it, but
might come up again for others...

twocust

[headus]

Ha! Yes, its a bug. Its because the floor is perfectly flat to start with basically :-) Thanks for providing the problem file ... it saves me lots of time when trying to debug these things.

The fix will be in the next release, which looks like happening early next week now.

Phil

[headus]

OK, I've made that fix, but there is another problem with that mesh ... one wall has reversed vertex order, which has flipped the normals (thats why its shaded blueish when seen from the outside). The problem is that its connected to normally ordered polys, but UVLayout isnt detecting that theres anything wrong there. It should really detach that wall as a separate shell at least.

Anyway, I hope to fix that one too ...

Phil

[twocust]

heh...glad I was able to provide you with some busy-werk.

I had to fix the vertex order in uvmapper-pro by just re-projecting it.

anyhow, thanks for having a look-see.


twocust

[headus]

Here's a pic with your mesh loaded into UVLayout with the new "flipped polys" fix. I've made the "inside" faces bluer to make it more obvious whats facing out and whats facing in, plus it'll now show a magenta line at the boundary between the two. Like the blue boundary edges, these cant be welded across.

In a future release I hope to add some geometry editing, to flip diagonals, or weld across geometry seems etc, and part of that will be a vertex order flipper/fixer. But for now if you see something like this in your meshes, like you've already discovered, you'll need to fix in another program.

Phil

[twocust]