PRJ (projectile) files are used in FIFA Manager to identify how 2D map textures (for countries or continents) are projected onto the geographic coordinates. They are placed in
fmdata/grids folder. They were introduced in FIFA Manager 08.
Each file consists of 144 bytes of data, which have the following structure:
DOUBLE Point 1 - X DOUBLE Point 1 - Y DOUBLE Point 2 - X DOUBLE Point 2 - Y DOUBLE Point 3 - X DOUBLE Point 3 - Y DOUBLE Point 4 - X DOUBLE Point 4 - Y DOUBLE Point 5 - X DOUBLE Point 5 - Y DOUBLE Point 6 - X DOUBLE Point 6 - Y DOUBLE Point 7 - X DOUBLE Point 7 - Y DOUBLE Point 8 - X DOUBLE Point 8 - Y INT32 Latitude - min INT32 Latitude - max INT32 Longitude - min INT32 Longitude - max
All 8 points form a grid which is then projected to defined latitude/longitude coordinates. This data can be visually represented like this:
Longitude - min Latitude - max Point 7 Point 6 Point 5 Point 8 Point 4 Point 1 Point 2 Point 3 Latitude - min Longitude - max