rnewstead1/bitmapper

Bitmapper

Requirements

• ruby 2.1.2
• rspec 1.3

Usage

Run the specs with rake

Bitmapper accepts an input file and will print output to the console. It uses Input_Parser to parse the input, which creates a list of Commands. Each Command has an execute method that takes a bitmap. Each Command returns a copy of the bitmap with any specific updates it needs. Bitmapper then goes through the list of Commands and executes them, with the bitmap returned from the previous Command.

Features

• I M N - Create a new M x N image with all pixels coloured white (O).
• C - Clears the table, setting all pixels to white (O).
• L X Y C - Colours the pixel (X,Y) with colour C.
• V X Y1 Y2 C - Draw a vertical segment of colour C in column X between rows Y1 and Y2 (inclusive).
• H X1 X2 Y C - Draw a horizontal segment of colour C in row Y between columns X1 and X2 (inclusive).
• F X Y C - Fill the region R with the colour C. R is defined as: Pixel (X,Y) belongs to R. Any other pixel which is the same colour as (X,Y) and shares a common side with any pixel in R also belongs to this region.
• S - Show the contents of the current image
• X - Terminate the session

Additional Features

• R A B - Replaces all pixels of colour A with colour B