Comp attributes and methods
- layer(index)
-
Return type: Layer, Light, or
Camera.
Argument type: index is a Number.
Retrieves the layer by number (order in the Timeline panel). Example: thisComp.layer(3)
- layer(name)
-
Return type: Layer, Light, or Camera.
Argument type: name is a String.
Retrieves the layer by name. Names are matched by layer name, or source name if there is no layer name. If duplicate names exist, After Effects uses the first (topmost) one in the Timeline panel. Example:
thisComp.layer("Solid 1") - layer(otherLayer, relIndex)
-
Return type: Layer, Light, or Camera.
Argument type: otherLayer is a Layer object, and relIndex is a Number.
Retrieves the layer that is relIndex layers above or below otherLayer. For example, thisComp.layer(thisLayer, 1).active returns true if the next layer down in the Timeline panel is active.
- marker
-
Return
type: MarkerProperty.
Important: You cannot access a composition-time marker by marker number. If you have a project created in a previous version of After Effects that uses composition marker numbers in expressions, you must change those calls to use marker.key(name) instead. Because the default name of a composition-time marker is a number, this is often just a matter of surrounding the number with quotation marks.
- marker.key(index)
-
Return
type: MarkerKey.
Argument type: index is a Number.
Returns the MarkerKey object of the marker with the specified index. The index refers to the order of the marker in composition time, not to the name of the marker. For example, this expression returns the time of the first composition-time marker:
thisComp.marker.key(1).time
- marker.key(name)
-
Return type: MarkerKey.
Argument type: name is a String.
Returns the MarkerKey object of the 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("1"). For a composition-time marker, the default name is a number. If more than one marker in the composition has the same name, this method returns the marker that occurs first in time (in composition time). The value for a marker key is a String, not a Number. For example, this expression returns the time of the composition-time marker with the name "0":
thisComp.marker.key("0").time - marker.nearestKey(t)
-
Return
type: MarkerKey.
Argument type: t is a Number.
Returns the marker that is nearest in time to t. For example, this expression returns the time of the composition-time marker nearest to the time of 1 second:
thisComp.marker.nearestKey(1).time
This expression returns the time of the composition-time marker nearest to the current time:
thisComp.marker.nearestKey(time).time
- marker.numKeys
-
Return
type: Number.
Returns the total number of composition-time markers in the composition.
- numLayers
-
Return
type: Number.
Returns the number of layers in the composition.
- activeCamera
-
Return
type: Camera.
Returns the Camera object for the camera through which the composition is rendered at the current frame. This is not necessarily the camera through which you are looking in the Composition panel.
- width
-
Return
type: Number.
Returns the composition’s width, in pixels.
- height
-
Return
type: Number.
Returns the composition’s height, in pixels.
- duration
-
Return
type: Number.
Returns the composition’s duration, in seconds.
- displayStartTime
-
Return
type: Number.
Returns the composition start time, in seconds.
- frameDuration
-
Return
type: Number.
Returns the duration of a frame, in seconds.
- shutterAngle
-
Return
type: Number.
Returns the shutter-angle value of the composition, in degrees.
- shutterPhase
-
Return
type: Number.
Returns the shutter phase of the composition, in degrees.
- bgColor
-
Return
type: Array [4].
Returns the background color of the composition.
- pixelAspect
-
Return
type: Number.
Returns the pixel aspect ratio of the composition.
- name
-
Return
type: String.
Returns the name of the composition.
Todd_Kopriva
said on
May 26, 2008
at
8:53 PM :
Comments
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