# polygon
INTEGRAL_FLUX X
  ! - x 2 x 1
  ! 2 m^2 \perp X
#  NAME X
  POLYGON
    1. 0. 0.
    1. 2. 1.
  /
END

INTEGRAL_FLUX
  ! 1 x - x 1 
  ! 1 m^2 \perp Y
  NAME Y
  POLYGON
    0. 1. 0.
    1. 1. 1.
  /
END

INTEGRAL_FLUX
  ! 2 x 2 x - with the connection between 1 and 5 carved out: 3 total
  ! 3 m^2 \perp Z
  NAME Z3
  POLYGON
    1. 0. 1.
    2. 0. 1.
    2. 2. 1.
    0. 2. 1.
    0. 1. 1.
    1. 1. 1.
  /
END

INTEGRAL_FLUX
  ! 2 x 1 x - top
  ! 2 m^2 \perp Z
  NAME top
  POLYGON
    0. 0. 2.
    2. 1. 2.
  /
END

INTEGRAL_FLUX
  ! - x 2 x 2 east
  ! 4 m^2 \perp Z
  NAME east
  POLYGON
    2. 0. 0.
    2. 2. 2.
  /
END

# plane
INTEGRAL_FLUX
  ! 4 m^2 \perp X
  NAME X_at_1
  PLANE
    1. 0. 0.
    1. 1. 0.
    1. 0. 1.
  /
END

INTEGRAL_FLUX
  NAME entire_top
  ! 4 m^2 \perp Z
  PLANE
    0. 0. 2.
    1. 0. 2.
    0. 1. 2.
  /
END

# coordinates and directions
INTEGRAL_FLUX
  ! 1 m^2 \perp X, Y, Z = 3 m^2 total
  NAME top_north_east_corner
  COORDINATES_AND_DIRECTIONS
    2. 1.5 1.5 1. 0. 0.  ! east face of cell 8
    1.5 2. 1.5 0. 1. 0.  ! north face of cell 8
    1.5 1.5 2. 0. 0. 1.  ! top face of cell 8
  /
END

