Delaunoi is available as a free plugin for Adobe XD.
Installation and a playground file to get started ->
How it works
Generation and distribution of data points is calculated by w (width) and h (height) divided by Size. And then manipulated by Randomness. This is how we get the different triangle and cell sizes and also the random distribution.
1. Simple distribution with no randomness
2. Organic, chaotic distribution with high randomness value
Small Size values can produce a lot of objects. So be carefull here.
This is not an error
Sometimes you get these renderings like in the image below.
The reasons are Randomness and how Delaunay and Voronoi diagrams are calculated.
In this case just increase w (width) and h (height) or use a mask to cover your generated diagram.