tile
The tile pattern of fillstyle. This is a tile identifier. Tiling of graphic primitives is performed after any color fill but before any hatching.
In the case of monochrome tile patterns, only the on bits of the tile pattern are displayed, using the color defined by fillstyle.tile_color. The off bits are displayed using fillstyle.color, unless that color is null in which case the tile is displayed transparent.
For full color tile patterns, transparent images use fillstyle.color or fillstyle.graduation as the background.
Note: fillstyle.tile and fillstyle.image are mutually exclusive.