headus 3D tools

kos · Posts: 5 Joined: 03 Mar 2009

Hi, Im using the linux version 2.04 pro and am having some trouble flattening geo.

The latest bit of geo Ive been working with is a simple 'cable' - pretty much just a scaled cube. While a good proportion of the polys are flattening out nicely, certain ones at the caps are scrunching up and it looks like in an effort to resolve them, UVL just spins the mesh around slowly!

Not sure what could cause this, but Ive tried deleting my preferences and Ive tried different bits of geo and have noticed it happens fairly regularly.

In the past Ive gotten around this in simple cases by flattening shells on a per-problem-poly basis, but obviously this isnt ideal.

Any ideas what I could be doing wrong?

Thanks in advance

Lewi · Posts: 61 Joined: 14 Jul 2006

Mmm not sure without seeing it but check you have enough seams cut to allow the mesh to flatten, especially tube shaped shells.If you could post some pics and the problem .obj it will help.

kos · Posts: 5 Joined: 03 Mar 2009

headus · Posted: Tue Mar 03, 2009 4:29 pm Post subject:

"Unfortunately the display drivers for linux wont allow me to provide you with a screen shot"

Tap F8 and whatever is in the 3D window should be saved out to a "snap.jpg" file in the same directory as the mesh file. This is built into UVLayout, and it uses OpenGL functions to capture the image, so it should work regardless of driver.

I also need a picture of the problem before I can make any suggestions.

Phil

kos · Posts: 5 Joined: 03 Mar 2009

Okay, thanks for the tip on taking screenshots.
Ive included a simple example. The geo in question is a cube with one face deleted and a couple of edgeloops. You can see it in the attached image - its the base of the green shaded tube.

As you can see in the second screenshot, Ive split the geo into two shells with the cap forming the square shell. Should be simple enough, but UVL is having some problems with it.

Ive also tested this on one of my colleagues machines, but Ive had the same result.

headus · Posted: Wed Mar 04, 2009 2:14 am Post subject:

Try using Shift-F on the shell with the red point. That'll pull everything out to a circle, and then it should relax back to the correct shape after you tap Space.

Phil

kos · Posts: 5 Joined: 03 Mar 2009

I've been using shift-F to flatter all my shells.
In this case, after Ive pressed space for the first time the shell looks pretty good, but then it quickly gets twisted into the shape from the screenshot.

headus · Posted: Wed Mar 04, 2009 2:23 am Post subject:

Hmmm, is there any chance you can email me a UVL file? Its still hard to see from the snapshots whats really going on there.

Phil

kos · Posts: 5 Joined: 03 Mar 2009

Sure...

headus · Posted: Thu Mar 05, 2009 1:09 am Post subject:

In case anyone finds they have the same problem, we've worked out what the bug is. The geometry comes from a larger scene, and is a long way away from the origin.

The work-around is to move the objects onto the origin before sending them to UVLayout, but I hope to have a proper bug fix ready for the next release.

Phil