These simplest patterns consist of a partitioning of space to which fixed selected colors are applied.
The first statement of this form is
pigment { checker color C1 color C2 }
This will colorize the object by a chessboard pattern of squares in the alternating
colors C1 and C2.
In fact all patterns in Pov-Ray are 3-dimensional, so this pattern
colorizes that part of the space which is occupied by the object by unit cubes
with alternating colors.
A modification of this theme is:
pigment { brick color C1 color C2 brick_size V mortar M }
which fills the space with bricks of dimension V in color C1
separated by gaps of dimension M in color C2.
Each further higher layer of bricks is offset 1/2 in the Another one is
pigment { hexagon color C1 color C2 color C3 }
which fills space by hexagonal infinite long upright columns of alternating colors.
Andreas Kriegl 2003-07-23