Adobe After Effects CS3 - Manual (Page 578)

AFTER EFFECTS CS3
User Guide
573
rotationZ Return type: Property.
Returns the z rotation value, in degrees, for a 3D layer.
lightTransmission Return type: Property.
Returns the value of the Light Transmission property for a 3D layer.
castsShadows Return type: Property.
Returns a value of 1.0 if the layer casts shadows.
acceptsShadows Return type: Property.
Returns a value of 1.0 if the layer accepts shadows.
acceptsLights Return type: Property.
Returns a value of 1.0 if the layer accepts lights.
ambient Return type: Property.
Returns the ambient component value as a percentage.
diffuse Return type: Property.
Returns the diffuse component value as a percentage.
specular Return type: Property.
Returns the specular component value as a percentage.
shininess Return type: Property.
Returns the shininess component value as a percentage.
metal Return type: Property.
Returns the metal component value as a percentage.
Layer Space Transforms methods
Use layer space transform methods to transform values from one space to another, such as from layer space to world
space. The “from” methods transform values from the layer’s space to the named space (composition or world). The
“to” methods transform values from the named space (composition or world) to the layer space. Each transform
method takes an optional argument to determine the time at which the layer’s transform is computed; however, you
can almost always use the current (default) time.
Use “Vec” transform methods when transforming a direction vector, such as the difference between two position
values. Use the plain (non-”Vec”) transform methods when transforming a point, such as position. Composition
(comp) and world space are the same for 2D layers. For 3D layers, however, composition space is relative to the active
camera, and world space is independent of the camera.
toComp(point, t=time) Return type: Array [2 or 3].
Argument type: point is an Array [2 or 3], and t is a Number.
Transforms a point from layer space to composition space.
fromComp(point, t=time) Return type: Array [2 or 3].
Argument type: point is an Array [2 or 3], and t is a Number.