Issue description

per Discord:
Captain Marek — Today at 7:40 PM
the zero is at the point where the stipes have the same color
it is not intended feature, it's just division rounds closest to zero
Expected behavior
Stripes should appear to be uniform in width; it's hard to tell whether the current behavior indicates one or two layers of ore.
Reproduction steps
- Unzip & Load attached save.
- Press L
- Look at iron & coal mines where they've been excavated below ground level
Game version
v0.4.10
Attachments
w2_save_22-07-27_21-23-29.save
Files not imported: w2_save_22-07-27_21-23-29.save