gdk:events-angle (event1 event2)

event1 -- a gdk:event instance
event2 -- a gdk:event instance

The double float for the relative angle between both events.

Returns the relative angle from event1 to event2. The relative angle is the angle between the X axis and the line through both positions of the events. The rotation direction for positive angles is from the positive X axis towards the positive Y axis. This assumes that both events have X/Y information. If not, this function returns false.

The rotation direction for positive angles is from the positive X axis towards the positive Y axis.