OptionalalphaOptionalcolorThe color of the grid. Default: 0x000000.
OptionaldiagonalsThe rule for diagonal measurement (see CONST.GRID_DIAGONALS).
Default: CONST.GRID_DIAGONALS.EQUIDISTANT.
OptionaldistanceThe distance of a grid space in units (a positive number). Default: 1.
The size of a grid space in pixels (a positive number).
OptionalstyleThe style of the grid. Default: "solidLines".
OptionalthicknessThe line thickness of the grid. Default: 1.
OptionalunitsThe units of measurement. Default: "".
The alpha of the grid. Default:
1.