Island generation option

[WilliamTambellini]

Is your feature request related to a problem? Please describe. As today there is apparently no option to constrain the generator to flat the height at the border of the height map in order to generate island(s). Note: I m only speaking/interested by the generator.

Describe the solution you'd like A bool flag forcing the hm generator to blend the height to 0 on the border of the heightmap. Example:

Describe alternatives you've considered none

Additional context

Where would the best place to add that option:

• scale down the heights on the borders to be weighted according to 'd2c' (distance to the center) in perlin_noise.shader or
• flattening the border of the image after the random generation as a post process stage/pass ?