Hi @BrokenCode,
I’m not really familiar with Lee Byron’s “mesh” library but here is my two cents:

getRegions()
only work with Voronoi objects  the “Triangulate” library seems more appropriate in your case
You just need to:

download it here

import it in your sketch
In setup()

put all the points (PVector) you want to triangulate in an array list (let’s call it
plist
) 
call the
triangulate
method on that list: >triangles = Triangulate.triangulate(plist)

display the triangles with the
beginShape(TRIANGLES)
function and fill them as you like:
beginShape(TRIANGLES)
for t in triangles:
fill(random(255), random(255), random(255))
vertex(t.p1.x, t.p1.y)
vertex(t.p2.x, t.p2.y)
vertex(t.p3.x, t.p3.y)
endShape()