About Draw Types
Some applications require different geometries to be drawn to the screen
at different times. Points are used the majority of the time but cannot
be used in all applications. Triangulating the points into a triangle
mesh allows the user to visualize the surface model in a much better
and different way than if points were drawn to the screen.
Delaunay
Triangulation is used to triangulate the points when using
the TIN Surface draw type.