The
Transparency interface defines the common transparency
modes for implementing classes.
Represents image data that is guaranteed to be either completely
opaque, with an alpha value of 1.0, or completely transparent,
with an alpha value of 0.0.
Represents image data that is guaranteed to be completely opaque,
meaning that all pixels have an alpha value of 1.0.
Represents image data that contains or might contain arbitrary
alpha values between and including 0.0 and 1.0.
Returns the type of this Transparency.