private void paintStruts(MassBlockUpdate mbu) {
MaterialData struts = boardStyle.getStrutsMaterial();
// vertical struts at the frame corners
Cuboid c =
new Cuboid(frameBoard.getLowerNE())
.shift(CuboidDirection.Up, 1)
.expand(CuboidDirection.Up, boardStyle.getHeight());
c.fill(struts, mbu);
c = c.shift(CuboidDirection.South, frameBoard.getSizeX() - 1);
c.fill(struts, mbu);
c = c.shift(CuboidDirection.West, frameBoard.getSizeZ() - 1);
c.fill(struts, mbu);
c = c.shift(CuboidDirection.North, frameBoard.getSizeZ() - 1);
c.fill(struts, mbu);
// horizontal struts along roof edge
Cuboid roof = frameBoard.shift(CuboidDirection.Up, boardStyle.getHeight() + 1);
roof.getFace(CuboidDirection.East).fill(struts, mbu);
roof.getFace(CuboidDirection.North).fill(struts, mbu);
roof.getFace(CuboidDirection.West).fill(struts, mbu);
roof.getFace(CuboidDirection.South).fill(struts, mbu);
}
