Plugin from here: https://github.com/devdad/SimplexNoise
Function: Noise2D(X, Y)*50;
When X and Y are just 2D heightmap array coordinates, result is like https://i.imgur.com/DwlCwQi.png
When they are coordinates, divided by 10, result is like this: https://i.imgur.com/Mx7NxZ9.png
When they are in range [0; 1], result is so https://i.imgur.com/2LkPCMW.png
