Apply the DropShadow effect
DropShadowFilter
DropShadowFilter is a class that stores information about drop shadow effects. Objects can be created by specifying the value of each property in the constructor arguments, or they can be created by default with no arguments, and only properties that need to be changed can be reassigned.
distance
The offset distance for the shadow, in pixels
angle
The angle of the shadow
color
The color of shadow color
alpha
The alpha transparency value for the color
blurX
The amount of horizontal blur
blurY
The amount of vertical blur
strength
The strength of the imprint or spread
quality
The number of times to perform the blur
inner
Specifies whether the glow is an inner glow
knockout
Specifies whether the object has a knockout effect
hideObject
Indicates whether or not the object is hidden