Interior Brushpaint and Orange Peel Test

BrendaEM · 08-17-22, 04:03 AM

Just as a thought experiment, I wanted to try to mock a brush-paint like bumpmap for the pressure-hull interior in Rhino. This wouldn't look right for mass-produced fitted parts such as motors, tanks, electrical boxes, and the like which would have been sprayed on a production line, but it would be for interior bulkheads, hatches, ect that likely would have been brush-painted, and/or touched up while at sea.

Disclaimer: It would still need a better dirtmap over it. Perhaps it should have more orange-peel. I am not sure if your game-engine (Unity?) affords an area/interior environment map, but it helps things like this.

Also, looking at surviving UBoat pics, which may not have the correct colors, the lighting varying temperature makes finding the correct colors challenging.

https://www.dropbox.com/s/ysvdzen338...ttest.jpg?dl=0

At the very last minute before posting this, I just found a paint document that pointed to traceable colors for all the parts of the UBoat. These have part numbers with modern color swatches! Such as "RAL 9002 paint"

https://www-u--boot--archiv-de.trans..._x_tr_pto=wapp

The original Uboat painting document for modeling document was here: https://amp.rokket.biz/docs/u-boat_colours_with_photos_5.pdf

I might give the colors another try with official swatches. LOL: I wish it were possible to add paint drips, runs, and hangers (line of paint), but that would make it very hard to map everything right.

Onkel Neal · 08-17-22, 07:42 AM

Wow, that gives it a whole new look, doesn't it? A little dirt, a little rust, a few tool marks and you have a great effect.

I will pass this along to Einar, our Grfx guy, thanks.

BrendaEM · 08-17-22, 12:45 PM

Thanks for posting the pic, which I seem not to be able to do.

I can share the bumpmap, but it does need more orange peel, and more dirt. When I get back I will get the color coordinates for some of the interior colors, from the paint swatches.

BrendaEM · 08-17-22, 07:43 PM

This appears to be semi-official RAL color pallet/swatch. The Uboat colors are from their "Classic" set. This is very helpful : )

https://ral-colors.us/ral-classic-colors/

From which, I collected these swatches comparing them to the ones I found from other sources, as well as the text descriptions, such as translated: "Ivroy" give me confidence that the RAL colors are correct.
(For some reason, my dropbox links don't work.)

https://www.dropbox.com/s/pdgg7j238i...olors.jpg?dl=0

Official German UBoat Painting Rules, text translation: https://www-u--boot--archiv-de.trans..._x_tr_pto=wapp
...which has color codes for the whole submarine--including No. 58, which is likely not RAL.

Noting that: given the lighting and narrow white balance, this sub was pretty-well color matched, showing blue hues in the grey, and cream in the white, perhaps a bit saturated from the incandescent light. There are a lot of coats of paint on this thing, with drips and hangers, that likely would not be present in the 1940s. The orange/red is totally blown out. Perhaps there's a florescent in there, exciting it.

BrendaEM · 08-18-22, 03:40 PM

As the unsolicited, ongoing, texture experiment continue. I took the RAL colors into Photoshop, and added both a dirt layer and a light rust layer. All textures are 4096's.

https://www.dropbox.com/s/376oi2xwe0...est01.jpg?dl=0

Because of the process, the rust and dirt result needs to be adjusted for each color. I will have too look at them again, though reflection and bump will hide some of the rust and dirt. Comments are welcome.

I tried to approximate the level of grunge that exists in the current texures, but perhaps they should be just a bit cleaner.

All the textures would need to be gamma-adjusted for the game-engine.

-----------------

The plan is to:
Make a decent orange-peel layer.
Recreate a better brush-mark layer.
Merge rust into a bumpmap so that the rust is faintly bumpmapped.
Export the rust so that it can be used to make a specular map, as the rust should be more matte. Perhaps I can get Awesomebump to do this, but it really needs to be tested in the engine.

I am aiming for a lot of orange peel, with some brushstrokes but less apparent than before. Looking closer rust should be visible/detectable, but not apparent. I want the player to see color first, dirt, later, and rust still later.

BrendaEM · 08-20-22, 03:12 AM

Getting there. Oddly, this has a fair amount of rust on it, chips, and dirt. The ivory paint texture is getting close to the heavy-coated orange-peel seen above.
There's not really bolts there, but it's fun.

There are: 4 textures, 1 bump-height map, 1 specular map. They are 4096s.
(I cleaned up a few posts and extra pictures.)

08-17-22, 04:03 AM	#1
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	Interior Brushpaint and Orange Peel Test Just as a thought experiment, I wanted to try to mock a brush-paint like bumpmap for the pressure-hull interior in Rhino. This wouldn't look right for mass-produced fitted parts such as motors, tanks, electrical boxes, and the like which would have been sprayed on a production line, but it would be for interior bulkheads, hatches, ect that likely would have been brush-painted, and/or touched up while at sea. Disclaimer: It would still need a better dirtmap over it. Perhaps it should have more orange-peel. I am not sure if your game-engine (Unity?) affords an area/interior environment map, but it helps things like this. Also, looking at surviving UBoat pics, which may not have the correct colors, the lighting varying temperature makes finding the correct colors challenging. https://www.dropbox.com/s/ysvdzen338...ttest.jpg?dl=0 At the very last minute before posting this, I just found a paint document that pointed to traceable colors for all the parts of the UBoat. These have part numbers with modern color swatches! Such as "RAL 9002 paint" https://www-u--boot--archiv-de.trans..._x_tr_pto=wapp The original Uboat painting document for modeling document was here: https://amp.rokket.biz/docs/u-boat_colours_with_photos_5.pdf I might give the colors another try with official swatches. LOL: I wish it were possible to add paint drips, runs, and hangers (line of paint), but that would make it very hard to map everything right. Last edited by BrendaEM; 08-17-22 at 04:16 AM.

08-17-22, 07:42 AM	#2
Onkel Neal Born to Run Silent Join Date: Jan 1997 Location: Cougar Trap, Texas Posts: 21,284 Downloads: 534 Uploads: 224	Wow, that gives it a whole new look, doesn't it? A little dirt, a little rust, a few tool marks and you have a great effect. I will pass this along to Einar, our Grfx guy, thanks. __________________ SUBSIM - 26 Years on the Web

08-17-22, 07:43 PM	#4
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	This appears to be semi-official RAL color pallet/swatch. The Uboat colors are from their "Classic" set. This is very helpful : ) https://ral-colors.us/ral-classic-colors/ From which, I collected these swatches comparing them to the ones I found from other sources, as well as the text descriptions, such as translated: "Ivroy" give me confidence that the RAL colors are correct. (For some reason, my dropbox links don't work.) https://www.dropbox.com/s/pdgg7j238i...olors.jpg?dl=0 Official German UBoat Painting Rules, text translation: https://www-u--boot--archiv-de.trans..._x_tr_pto=wapp ...which has color codes for the whole submarine--including No. 58, which is likely not RAL. Noting that: given the lighting and narrow white balance, this sub was pretty-well color matched, showing blue hues in the grey, and cream in the white, perhaps a bit saturated from the incandescent light. There are a lot of coats of paint on this thing, with drips and hangers, that likely would not be present in the 1940s. The orange/red is totally blown out. Perhaps there's a florescent in there, exciting it. Last edited by BrendaEM; 08-17-22 at 11:34 PM.

08-18-22, 03:40 PM	#5
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	Colormap Test-1 As the unsolicited, ongoing, texture experiment continue. I took the RAL colors into Photoshop, and added both a dirt layer and a light rust layer. All textures are 4096's. https://www.dropbox.com/s/376oi2xwe0...est01.jpg?dl=0 Because of the process, the rust and dirt result needs to be adjusted for each color. I will have too look at them again, though reflection and bump will hide some of the rust and dirt. Comments are welcome. I tried to approximate the level of grunge that exists in the current texures, but perhaps they should be just a bit cleaner. All the textures would need to be gamma-adjusted for the game-engine. ----------------- The plan is to: Make a decent orange-peel layer. Recreate a better brush-mark layer. Merge rust into a bumpmap so that the rust is faintly bumpmapped. Export the rust so that it can be used to make a specular map, as the rust should be more matte. Perhaps I can get Awesomebump to do this, but it really needs to be tested in the engine. I am aiming for a lot of orange peel, with some brushstrokes but less apparent than before. Looking closer rust should be visible/detectable, but not apparent. I want the player to see color first, dirt, later, and rust still later. Last edited by BrendaEM; 08-18-22 at 03:49 PM.

08-20-22, 03:12 AM	#6
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	Paint Test 6 Getting there. Oddly, this has a fair amount of rust on it, chips, and dirt. The ivory paint texture is getting close to the heavy-coated orange-peel seen above. There's not really bolts there, but it's fun. There are: 4 textures, 1 bump-height map, 1 specular map. They are 4096s. (I cleaned up a few posts and extra pictures.) Last edited by BrendaEM; 08-20-22 at 04:02 AM.

08-17-22, 12:45 PM	#3
BrendaEM Mate Join Date: Aug 2022 Posts: 56 Downloads: 0 Uploads: 0	Thanks for posting the pic, which I seem not to be able to do. I can share the bumpmap, but it does need more orange peel, and more dirt. When I get back I will get the color coordinates for some of the interior colors, from the paint swatches.