bruntonspall/7drl-space-trader — pull request #3 by robertberry (2014-03-10 22:27:51+00:00)
Title: Use Perlin noise to generate clustered stars

Not my idea, stolen from http://www.bitblit.org/articles/starfield/index.shtml

Tried it out and seems to work pretty well. We can alter density & stuff. It's nice that it gives a brightness number too, which we can use to determine what glyph to show. (Meaning brighter stars will appear in denser clusters.)