Vec3
From MaratisWiki
Minimal vector manipulation for 3d vector, compatible with the current table system :
vec = vec3(x, y, z)
allowing basic math (addition, multiplication etc), for example :
pos = (getPosition(object) + vec3(1, 0, 0)) * 2
-- it's still a table like before : x = pos[1] y = pos[2] z = pos[3]
