sketch by sol lewitt. particle cube by selavy oh.
the particle cube consists of one base prim and one moving prim for each edge (12 prims). the edge prims draw the edges by dropping so-called particles, i.e., two-dimensional texture patches.
a larger interactive version of the basic cube is on display now at the museum of hyperformalism curated by DC Spensley (aka DanCoyote Antonelli).