GlowScript: Interactive 3D Visualizations in VPython

Is GlowScript an abstraction layer above VPython? I don't program with Python but it's nice that you can just write in JavaScript to work with it.

On a lower level, I am not sure you can change it directly, but the drawing of spheres could have an alternative option that is more effective for certain cases, like displaying atomic or particle systems that are space-filling. For cases like this, drawing large points with a specialized shader is preferred.