PPM image format manipulation.

Description

This project was done for a university assignment for Princípios de Programação course.

Build project

$ stack build

Run project

$ stack exec -- photoshop-haskell <input_file> <output_file> <flags>

Arguments	Description
input_file	Input file name.
output_file	Output file name.
flags	Flags to select modifications to be applied on image.

Flag name	Description
-fh	Horizontal flip
-fv	Vertical flip
-gs	Gray scale
-rc	Red scale
-bc	Blue scale
-gc	Green scale
-hw	Crop half width
-hh	Crop half height

Run example

$ stack exec -- photoshop-haskell ./assets/input.ppm output.ppm -fh -gs -hw