[ Version ( since = "1.14" ) ]
public void add_marker (string marker_name, double progress)
Adds a named marker that will be hit when the timeline has reached the specified progress.
Markers are unique string identifiers for a given position on the timeline. Once this reaches the given
progress of its duration, if will emit a marker_reached
signal for each marker attached to that particular point.
A marker can be removed with remove_marker. The timeline can be advanced to a marker using advance_to_marker.
See also: add_marker_at_time
| this |
a Timeline |
| marker_name |
the unique name for this marker |
| progress |
the normalized value of the position of the martke |