OpenScad Virtual Machine - v0.1

After looking at the Mars Exploration Rover: http://www.thingiverse.com/thing:10057 I was inspired to do something in OpenScad that I've wanted to do for a long time.

This thing is a technique for representing and rendering your models using some arrays and 'recursion'.

There are just a couple of routines introduced, but with them, you can essentially do something like:

CSG([OP_UNION, [
[PRIM_CYLINDER, [2,2, 8+15+3],zero(), zero()],
[PRIM_CYLINDER, [4,4, 3],zero(),zero()],
]]);