Crossing white line in Auto mode

[2010FRC2826]

If a robot crosses the center white line as stated in rule <G28>, is the definition of the where the "robot" crosses based on the top-down vertical projection of the frame, bumpers, or is it based on where the wheels or tracks are touching the ground?

[GDC]

Under Rule <G30>, the ROBOT would receive a PENALTY when it "completely" crosses the CENTER LINE. Thus, the PENALTY is assessed when when all parts of the ROBOT (i.e. the vertical projection of the entire ROBOT) cross the line.