plane-vertical.mac

# Rotate a Plane source to a 45-degree angle in x-z,
# still oriented to face the detector. 
/gps/pos/type Plane
/gps/pos/shape Square
/gps/pos/centre 0 0 2 m
/gps/pos/halfx 0.7 m
/gps/pos/halfy 0.7 m
/gps/ang/rot1 1 0 0
/gps/direction 0 0 -1

# Make the GPS source visible.
/vis/scene/add/gps