Data.Bitmap.Croppable
- class Bitmap bmp => BitmapCroppable bmp where
- crop :: bmp -> Coordinates (BIndexType bmp) -> Dimensions (BIndexType bmp) -> bmp
Documentation
class Bitmap bmp => BitmapCroppable bmp whereSource
Class for bitmaps that can be rectangularly cropped into (possibly) smaller sizes
Using the functions of the Bitmap class,
default functions are be defined for each of
these; of course, implementations are free
to write more efficient versions.
Methods
Arguments
| :: bmp | |
| -> Coordinates (BIndexType bmp) | |
| -> Dimensions (BIndexType bmp) | |
| -> bmp | Crop a bitmap with the given dimensions (third argument) from a position (second argument) Implementations can but are not required to assume that the result will be a (not necessarily proper) subset of the super bitmap only. Implementations should properly handle the case where the result is as large as the passed super bitmap. |
Instances