WANTED: Shading Map for Quonset Hut

DaltonSpence

I know the dimensions of what I want (50 feet wide by 100 feet long*) and the surface texture (corrugated steel† with vertical ridges) but I don't know how to make the shading map for a hemispherical arch that size (2000 px wide by 4000 px long* at 40px/foot). I could scale down the map image to make arched roofs for passages or smaller buildings but I don't want to get a new piece of software just to make this one image. (Unless it's very simple to learn; I already have two image programs I never use because they are too complex.) Any help here would be greatly appreciated.
Notes:
* Dimensions: length = x-axis, width = y-axis.
† I've seen this texture somewhere but I can't remember where.

Loopysue

If you have City Domes you probably have a map file that you can copy and modify. Those domes are pretty large.

DaltonSpence

You are right @Loopysue , they are larger than I thought they were. The only perfectly smooth dome shading map I found was for "Transdome 01" so I pulled “@ Symbols\Cities\CA144A City Domes\Transparent\Transdome 01_VH_map.PNG” into GIMP, trimmed off the transparent space around it, copied a 3px slice from the center of the dome into a new image, tiled it to a square and scaled it down to 4000×4000 px (100′×100′) and got this:

By scaling and tiling this prototype shading map I should be able to construct shaded arched roof symbols of any dimension. Thanks for the suggestion.

Raiko

DaltonSpence said:

† I've seen this texture somewhere but I can't remember where.

There are some corrugated roofing tiles in "Bitmaps\Tiles\Storyweaver Highspace\Human", which I assume are from Annuals 67 & 70 (Highspace SciFi Tiles 1 & 2). 

DaltonSpence

Thank you @Raiko, that was just what I needed.