Crash when trying to UV Convex Hull

[Nova]

Hey,

I've used the Bound Body Hull -> Convex Hull option to create a stone from a random convex hull that I inflated (Really fast way to get some decent looking rocks, btw), but when I try to UV Map this shape, I get the following crash dump (See attached file) when I select Continue -> Project Normal in the AutoUV Segmenting window.

[ggaliens]

Didn't see any UVMapping cues to be used by AutoUV.

What cues did you provide for cutting ?

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OK ... this look like a possible problem with an "illegal name" created by ManifoldLab.

I don't know this with 100% confidence ... but if you proceed as if true ... maybe you can
find more of a smoking gun. Renaming object also failed me. I had to rename by using
Manifoldlab rename.

Try any sort of name washing ... including export to OBJ ... look at names ... re-import. We will fix this
once we do some basic tests here.

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Lists in Erlang are "FUNNY" ... it is easy to product a list of lists that sometimes can pass onwards as a string ... and sometimes not.

If you could list the exact steps you take to make a rock that fails ... I will debug it all the way in ManifoldLab and release a fix.

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Also ... let me know what build/version/date of Manifoldlab (about menu) you used when having issue.

I encountered this issue myself a few weeks ago. It MIGHT be fixed in latest manifoldlab. Not sure.

Either way ... to fix ... we need simplest receipe for producing the bug.

[Nova]

I was using version 2015-02-21--18.18.mlab

My steps were (To the best of my memory)

1) Create a convex hull, random
2) Select verts -> Bounding Body Hull -> Convex Hull
3) Repeat steps 1 and 2 a few times.
4) Select verts -> Deform -> Inflate
5) Use turn edge on a few of the edges
6) Used MLab Rename Sequence (Probably, like you say, it was the bad naming?)
7) Combine objects -> UV Mapping
Select all faces -> Segment by -> Projection
9) Continue -> Project Normal
10) Crash

I ended up exporting as an obj and unwrapped in Ultimate Unwrap, then re-imported the mesh, and were now able to see the UV Maps again.

[ggaliens]

Nova ... check out this relevant reading ...


http://stackoverflow.com/questions/65032...-in-erlang

I'm guilty of using that io_lib function ... and it produced a deep list. Which in fact is handled fairly welll ny a number of parts of Wings3D ... so that the potential problem can haunt at a much later date. Anyways. I know how to fix it in MLAB and will do so soon. I'm just fixing the rename sequence function tonight to remove the deep list.

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New release just now ... to fix the problem with the rename sequence.

I argued the other day that it could be an AutoUV fix ... but probably better to
squash the issue at it's source.