rotateCounterClockwise45 method
Returns a new object with rotated image data by 45 degrees counterclockwise. Only callable if {@link #isRotateSupported()} is true.
@return A rotated version of this object.
Implementation
LuminanceSource rotateCounterClockwise45() {
throw UnsupportedError(
'This luminance source does not support rotation by 45 degrees.');
}