why uv packers are so stupid and treat uv islands as conveses?

kurt_hectic

Hello,


I'd like to ask you why uv packers are so stupid and treat uv islands as convexes?

I've tested:
-3ds max packer
-uv-packer
-xray unwrap
-polyunwrapper

and all of them worked similar. Check out this screen from the official uv-packer website:







Is there any better plugin\script that can handle packing of uv's?

ZacD

Convex shapes are quicker and easier to calculate, there's a reason why collision meshes are convex as well.

JedTheKrampus

The lightmap packer for UE4 doesn't leave big gaps like that. Maybe you should use that for packing your UV layouts. I mean, it's not so good if you want to mirror any parts, which you probably would want to do if you want optimal texel density, but it packs the islands more cleverly than anything else I've tried, Headus included.

ZacD

3d Coat also doesn't have these issues, if I recall correctly.

passerby

or just pack by hand.

.Wiki

UV Layout can put uv shells inside of convex shapes/ holes.

kurt_hectic

OK, thanks, I'll test it!

tadpole3159

passerby wrote: »

or just pack by hand.

Well that's not the point, it you have too tweak it by hand the technical process doesn't work

Fingus

3D Coat's packing is pretty solid.

kurt_hectic

Thanks, Ill test it. Looks promising.

I already downloaded demo of the UV Layout and wasn't able to use it ;P UI of this soft is from 80' btw..

JedTheKrampus

The reason why UVLayout has a 90's style GUI is because its all based on Motif code I wrote in the 90's. You'll also be pleased to hear that UVLayout is written in 90's style plain C, and all my graphics code is IRIS GL (it sits on top of a library that coverts the calls into Open GL). Oh, and I use 'vi' and 'make' still :-)

Quoted from the UVLayout developer. It's as ugly as sin, but it does what it needs to quite well if you can afford to pay for it.

.Wiki

JedTheKrampus wrote: »

Quoted from the UVLayout developer. It's as ugly as sin, but it does what it needs to quite well if you can afford to pay for it.

Yep and it´s fast, very fast if you know all the shortcuts.

kurt_hectic

A poem:

I made a bump
to write that I'm dumb!


Textools do the job! The soluction was so near.