pnm
Table of Contents
PNM (Portable Anymap) parser/generator library in pure Nim.
1. Development
nim -v
Nim Compiler Version 0.19.4 [Linux: amd64] Compiled at 2019-02-01 Copyright (c) 2006-2018 by Andreas Rumpf
git hash: b6d96cafc8bcad1f3d32f2910b25cd11a93f7751 active boot switches: -d:release
nimble -v
nimble v0.9.0 compiled at 2018-10-27 18:10:03 git hash: couldn't determine git hash
2. Install
nimble install pnm3. Usage
3.1. Reading PGM file
import pnm
block:
# P2
let p = readPGMFile("tests/out/p2.pgm")
echo p
block:
# P5
let p = readPGMFile("tests/out/p5.pgm")
echo p3.2. Writing PGM file
import pnm
let col = 6
let row = 12
let data = @[
0'u8, 0, 0, 0, 0, 0,
0'u8, 0, 0, 0, 0, 0,
0'u8, 0, 0, 0, 0, 0,
0'u8, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2,
]
block:
# P2
let p = newPGM(pgmFileDiscriptorP2, col, row, data)
writePGMFile("tests/out/p2.pgm", p)
block:
# P5
let p = newPGM(pgmFileDiscriptorP5, col, row, data)
writePGMFile("tests/out/p5.pgm", p)3.3. Other examples
See examples directory.
Run example code.
Generating PBM.
nim c -d:release examples/pbm_example.nim
./examples/pbm_example
Generating PGM.
nim c -d:release examples/pgm_example.nim
./examples/pgm_example
Generating PPM.
nim c -d:release examples/ppm_example.nim
./examples/ppm_example
Controling generated PNM files.
nim c -d:release examples/convert.nim
./examples/convert
4. Warning
Available color byte of PGM and PPM is 1 byte (0~255).
