Isolines and isobands

[darkfrei]

Hi all!

My try to make a simple marching squares in Lua.

[darkfrei]

How I can understand that this lines must not crossing?

[darkfrei]

Maybe helpful https://www.boristhebrave.com/2018/04/1 ... -tutorial/

[darkfrei]

Again just isolines lua, not isobands.

Actually, it's not marching-squares, it's marching-triangles.

[darkfrei]

Reworked version of marching squares, based on this tutorial: https://www.youtube.com/watch?v=0ZONMNUKTfU

[Gunroar:Cannon()]

Nice, the marching triangle(4th one) really looks like an actual contour map.
What are marching squares used for though?
I only know of using it to align(?) tilesets so that they look natural.

[darkfrei]

Nice, the marching triangle(4th one) really looks like an actual contour map.
What are marching squares used for though?
I only know of using it to align(?) tilesets so that they look natural.

It was a way to make a nice smooth smog for Factorio mod. The old smog was (is) too squarish.

[Gunroar:Cannon()]

Wow, that really is an improvement!

[Suttebun]

Hahaha, you know when colors blend together - you can see the natural blending points?
It's like.. you manually built those instead of writing bumps that have noise.

[darkfrei]

So, isolines and isobands are solved!


Here
isoline is one segment, maybe two segments in tile.
isoband is a polygon for each tile, the list of them (or no polygon in tile).

Press arrows to scale, move noise with mouse or change isoheight with mouse wheel.

isolines-and-isobands-10.png (58.36 KiB) Viewed 2422 times

Screenshot 2023-05-02 212616.png (132.52 KiB) Viewed 2395 times