Plotting a point cloud with jzy3d ( opengl / jogl )

I have been using Malcolm Lidierth's excellent demo for plotting a surface with jzy3d; this works very well. Now I want to plot a point cloud with millions of points and I am struggling with how to adapt Malcolm's example code. I have tried looking at his Waterloo-jzy3d source code but this appears to be different to his binary jar file.

Please can anybody help me plot 3d points with jzy3d?

or

Has anybody got an alternative way of plotting 3d points in opengl/jogl from Matlab?

Jim