2D projection mapping where points are distributed as dense as possible given the "minimum distance", then removed based on the user provided density map and the internal generated density map. The distribution of the points is not as homogeneous as the poisson disc.
The minimum distance determines a maximum density beyond which the points would violate the distance rule. This is the most important parameter, and the one that is usually setup first as part of the asset to be scattered.
The UI may or may not auto-adjust the density input to not exceed this cap.
The internal generated density map is a map from 0 to 1 generated from the ratio of the density provided by the artists and the internally calculated maximum density.
For small density, with a density attribute, there is a chance no point is discreticized.
Example of the resulting generated density map for different density inputs:

