Beginnings of clipping
Beginnings of clipping

Trivially accept polygons with all vertices in the homogenous unit cube
Trivially reject polygons with all vertices outside the homogenous unit cube
    But this is incorrect as a polygon could have all verts outside and still have a visible part, need to use codes
Begin to write clipping loop - still missing intersect line segment with edge

lkesteloot/alice,lkesteloot/alice,lkesteloot/alice,lkesteloot/alice,lkesteloot/alice,lkesteloot/alice