Poisson disc sampling algorithm in Elixir
Poisson disc distribution produces evenly randomly distributed points, where
all points are at least minimum distance apart.
PoissonDiscSampling.generate(min_dist, area_width, area_height, samples)
min_dist - minimum distance between points
samples - maximum number of attempts to find a new suitable point in
each step (typically 30)
The algorithm divides the area into a grid and places at most one point into
each cell.
Returns list of {x, y} points.
This implementation uses an algorithm by Robert Bridson:
Fast Poisson Disk Sampling in Arbitrary Dimensions