Help with UV Maps!

[Shaine415]

Hiya all, Right I've made a boo boo here, One of the 1st models I ever created a livery on and unfortunately I did this on vehicle_paint1.

Now I'm trying to add multiple liveries to this model and I need to change it to vehicle_paint3 but the polygons are a nightmare on this model so detaching panels to create a new UV Map is kind of not possible.
UV #1 is perfect and keeping to the same template when I move it to UV #2 it obviously does not work/line up and it should.

Can I take the UV mapping from UV #1 and copy it to UV #2?

In the materiel properties if I change in DETAIL2 'UV coordinates comes from' 'Manual UV #1' then in zmodeler3 it shows perfect but on export I add the relevant files to the YTD and they either don't show, or show as if I was using UV #2

Any help will be much appreciated.
Thankyou

[Oleg]

Game's shaders are hard coded and will still read data from UV#2, so it will not take effect whether you set "Use UV Mapping: Manual UV#1" on texture slot.

You can copy UV data from channel #1 onto channel #2. The "Copy UV" tool does this.
Select all objects that could be affected and switch them all to polygons level. Then use Select\ByMaterial tool to select polygons of associated "paint3" material only. Then expand options of Surface\Mapping\CopyUV tool. Enable [v] option next to UV#2 only (as this is the only channel you would like to be editied/affected) and set next to it "Copy from: UV#1". Close options window, press "Copy UV" button to pick the tool and click on any of selected polygons to apply the tool.

[Shaine415]

Game's shaders are hard coded and will still read data from UV#2, so it will not take effect whether you set "Use UV Mapping: Manual UV#1" on texture slot.

You can copy UV data from channel #1 onto channel #2. The "Copy UV" tool does this.
Select all objects that could be affected and switch them all to polygons level. Then use Select\ByMaterial tool to select polygons of associated "paint3" material only. Then expand options of Surface\Mapping\CopyUV tool. Enable [v] option next to UV#2 only (as this is the only channel you would like to be editied/affected) and set next to it "Copy from: UV#1". Close options window, press "Copy UV" button to pick the tool and click on any of selected polygons to apply the tool.

Thankyou Oleg for your help, i have followed your instructions to a T, nice and easy to follow but when I click on any of the selected polygons nothing seems to happen. Do I need to Edit UV at all and if i do would that be to Keep Old Mapping or Generate New?

[Oleg]

no, neither Edit UV tool nor UV Mapper window are involved here.

My bad... "Copy UV" tool works on objects only at the moment. You need to hover and click the object, then click on it the second time (so copy is done within same object).

I will make an update for the tool to work on selected polygons and vertices too, as I find it useful.

[Shaine415]

You Sir, are my hero for the day, Thankyou so much for your help.

[Oleg]

Update is available. "Copy UV" tool can now be applied to selected polygons/vertices within an object (or for several objects at a time), so you can make an UV channel data changes on affected polygons only (selected by material in advance).