crop
Returns a new object with cropped image data. Implementations may keep a reference to the original data rather than a copy. Only callable if isCropSupported() is true.
Return
A cropped version of this object.
Parameters
left
The left coordinate, which must be in [0,getWidth())
top
The top coordinate, which must be in [0,getHeight())
width
The width of the rectangle to crop.
height
The height of the rectangle to crop.