The FIDUCIALS section is intended to allow a user to define geometries for aligning the package with equipment that processes it -- these alignment targets are known as fiducials.
[FIDUCIAL] NAME=X,Y SQUARE DIMENSION NAME=X,Y POLYGON NUM_OF_POLYS WIDTH NUM_OF_VERTICES X,Y X,Y ...
NAME - A user defined name for the fiducial. No spaces or special characters.
X,Y - The center coordinates or reference point (if a polygon this point acts as the reference for the vertices that follow.)
SQUARE - If the fiducial is a simple square shape use the keyword square.
DIMENSION - for a square fiducial, this is the length of an edge.
POLYGON - more complex fiducials can be described using the polygon format.
NUM_OF_POLYGONS - the number of polygons that comprise this fiducial. Generally if more than one, the additional polygons are cutouts.
WIDTH - for a polygon, the width of the edge. Normally = 0.
NUM_OF_VERTICES - the number of vertices to follow. (Note, first and last vertex must be explicitly stated so a "square" has 5 vertices.) If this number is negative, it indicates that the polygon is a "cutout."
X,Y - for a polygon the vertex coordinates are with respect to the reference coordinate - they are not absolute. Also the first vertex must be the same as the last to close the polygon.
The following fiducial data produces the image shown below:
F1=4500,4500 SQUARE 350 F2=-4500,4500 SQUARE 350 F3=-4500,-4500 SQUARE 350 F4=4500,-4500 POLYGON 1 0 13 25,25 175,25 175,-25 25,-25 25,-175 -25,-175 -25,-25 -175,-25 -175,25 -25,25 -25,175 25,175 25,25
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