Adobe After Effects CS4 - Manual (Page 678)

672 USING AFTER EFFECTS CS4
Expressions
Last updated 12/21/2009
timeRemap Return type: Property.
Returns the value of the Time Remap property, in seconds, if Time Remap is enabled.
marker.key(index) Return type: MarkerKey.
Argument type: index is a Number.
Returns the MarkerKey object of the layer marker with the specified index.
marker.key(name) Return type: MarkerKey.
Argument type: name is a String.
Returns the MarkerKey object of the layer marker with the specified name. The name value is the name of the marker,
as typed in the comment field in the marker dialog box, for example,
marker.key("ch1") . If more than one marker
on the layer has the same name, this method returns the marker that occurs first in time (in layer time). The value for
a marker key is a String, not a Number.
This expression on a property ramps the value of the property from 0 to 100 between two markers identified by name:
m1 = marker.key("Start").time;
m2 = marker.key("End").time;
linear(time, m1, m2, 0, 100);
marker.nearestKey(t) Return type: MarkerKey.
Argument type: t is a Number.
Returns the layer marker that is nearest in time to t. For example, this expression returns the time of the marker on the
layer nearest to the time of 1 second:
marker.nearestKey(1).time
This expression returns the time of the marker on the layer nearest to the current time:
marker.nearestKey(time).time
marker.numKeys Return type: Number.
Returns the total number of markers on the layer.
name Return type: String.
Returns the name of the layer.
Layer 3D attributes and methods (expression reference)
orientation Return type: Property [3].
Returns the 3D orientation value, in degrees, for a 3D layer.
rotationX Return type: Property.
Returns the x rotation value, in degrees, for a 3D layer.
rotationY Return type: Property.
Returns the y rotation value, in degrees, for a 3D layer.
rotationZ Return type: Property.
Returns the z rotation value, in degrees, for a 3D layer.
lightTransmission Return type: Property.