Nitrogen Fingers Paint

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File Format
Name NFP
Ontology
Extension(s) .nfp
Compression None
Reference Implementation CC:T's paintutils (lua)
Error Resilience None
NFP[Stands for?] is a simple text file format used by ComputerCraft to store images.

CraftOS's paint program allows for easy editing of these files with a GUI.


Format

An NFP file consists of a text file containing a hex character for each pixel.

Each pixel's character must be in the range 0-f and be lowercase, any other characters (including capital A-F) are treated as fully transparent pixels.

The newline (\n) character moves to the beginning of the next row.[End file with newline or not?] Due to the nature of this, it is possible to have rows of different length and therefore means that nonsquare images can be created.

Whilst any unrecognised character is treaded as a transparent pixel, it is recommended that a space be used.


Example

house.nfp NFP transparent.png represents a transparent pixel.
NFP PNG PNG (nonsquare)
        c␤
   eeeeec␤
  eeeeeee␤
 eeeeeeeee␤
  ccccccc␤
  c33cc5c␤
  ccccc5c␤
fffffffffff␤

NFP house.png NFP house nonsquare.png

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