Borders between countries - political map maker

It’s not REALLY politics! I think that’s the name of these world maps with different country colors.

So I’d like to write a portal fantasy sci-fi - they show up somewhere fictional and Viola! story. I like to randomly generate destinations and this is the latest of my methods.

Making planets has always resulted in some lumpy continents with no deliniation for political boundaries - this fixes that and almost forces national borders to play nice with the continent shape. BUT…

How can I get lines to render between nations? I’m hoping to grow this out a little, but first things first!

It’s not perfect… but if you use the voronoi (hard to see; but i guess you used it) texture with a slightly different scale and diff it… like so:

Thank you, I’ll be giving that try in the near future. I couldn’t quite remember what egg cracks everyone was using! I might even find a way to make it a little like dots. But here’s the WIP of the nodes…

Interesting… i almost had it (not shown)… but know tweaking more…

And… my trick gives more something like continal plate borders…

Because you are producing the differences in colro for the region borders with the colorramp starting with some white and then from balck to white… maybe using this the get only a tiny bit (i’m thinking more of the problem than using a proper description here :sweat_smile: )

That’s cool though that it still matches the continental shapes. I try not to make things too easy for myself either :upside_down_face:

Thisis tricky… almost…

…there has to be considered two different way how the areas are created and so how to get the border. And also some very fiddly way to fins the correct position (value for it). But still it’s omitting some…

This technique might not come around like Find Edges in GIMP or Photoshop - I tried scaling UV Mapping and Rotation and adjusting the input for Voronoi and it always results in uneven line widths instead of a definite mark between colors.

Isn’t there some Node that produces a line based on pixel width or percentage? I’m just throwing that out there as some vague memory.

For a border, you could use your Voronoi to drive something like this before the color kicks…

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Well… it’s almost simple if you use a second voronoi with *Distance to Edge"…

  1. is for the border with at the voronoi
  2. is a bit fricle to find the best value to be "on the border of the values used by the “special” color ramp
  3. using *constant" on this ramp makes it easier

and also… it depends abit on the mapping and possible subdiv (left cube, still some non-borders; right sphere ).

The Power and Value Nodes are cool additions to the output - I’ll be putting that forward in a bit. Thanks for chiming in!

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Quietly back to it.
Unhappy with the borders bulging from the NOISE texture that gives some wiggle to ocean and lake edges. Without it, the VORONOI creates very straight and lovely borders but those borders are dull since they don’t seem to follow any “natural” land feature.


I think by keeping some underlying mess of Noise and Voronoi, I can later add mountain range indications and generate mild biozones based on “terrain” that doesn’t necessarily have to corrupt borders; essentially hiding a layer of effect beneath the illusion of no layers.

(OMITTED the silly desert band of color around the equatorial region)

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