topic Re: Unwrap UVW Rescale Selection Multiple Objects in 3ds Max Forum

Unwrap UVW Rescale Selection Multiple Objects

alLVU34 — Tue, 07 Dec 2021 16:18:59 GMT

Hello everyoen,

I applied the unwrap uvw modifier to multiple objects (instanced) and arranged the uv segments in the map. Now I would like to rescale the whole arrangement to exactly match the map in width (the arrangement is wider than high) while keeping its aspect ratio. The uv template needs to be exactly as wide as its content without any blank area on the sides. Packing rearranges the elements, which is bad, also when grouping the elements before.

Can anyone help? Thank you!

Re: Unwrap UVW Rescale Selection Multiple Objects

10DSpace — Tue, 07 Dec 2021 21:10:13 GMT

Hi @alLVU34,

If I understand your situation correctly, you can manually scale all of your selected UV Islands with the "Scale Selected Subobjects" tool in the UV Editor window (3rd icon from the left in the top toolbar). To help you align the islands with the texture, you can show the texture in the UV tile space via the caret dropdown in the upper right of the UV editor ("pick texture"). Hope this helps.

Re: Unwrap UVW Rescale Selection Multiple Objects

alLVU34 — Thu, 05 May 2022 10:53:26 GMT

Hi, thanks for your suggestion.

I know the scaling tool and it works okay but it is a manual way of doing this task. You have to be really precise by dragging the lines to the map's borders if you want a relatively good result.

An automated or numeric way of scaling the arrangement to match the map would be much more convenient.

Any idea?

Re: Unwrap UVW Rescale Selection Multiple Objects

10DSpace — Thu, 05 May 2022 13:00:23 GMT

@alLVU34

I am not sure of the order of operations in what you did or whether you can make the Unwrap all one UV island or not, but as a simple example, I

1. Created multiple boxes as instances

2. Applied an Unwrap UVW modifier to one of the instanced boxes

3. Unwrapped the box into a single UV Island

4. Hit "Pack Custom"

and the resulting UVW island extends as far as it can to the edges of the U1V1 tile.

The same UV mapping is also on all of the instanced boxes without further effort on my part.

Is there a reason that you cannot follow this workflow for your use case?

Re: Unwrap UVW Rescale Selection Multiple Objects

jon.bell — Tue, 10 May 2022 19:10:36 GMT

Hi @alLVU34,

Thanks for your question. You should get good results with the suggestions posted here, so could you please let us know how these work for you? If they address your issues, could you please mark the suggestions as a Solution for other users coming to this thread? Thanks!