Libraries
PGM Source Code
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Function Summary
PRIMITIVE_WINDOW
readPgm (inout file: pgmFile)
Reads a PGM (portable graymap) image file into a pixmap.
PRIMITIVE_WINDOW
readPgm (in string: pgmFileName)
Reads a PGM file with the given pgmFileName into a pixmap.
string
str (in PRIMITIVE_WINDOW: pixmap, PGM)
Converts a pixmap into a string in PGM format.

Function Detail

readPgm

const func PRIMITIVE_WINDOW: readPgm (inout file: pgmFile)

Reads a PGM (portable graymap) image file into a pixmap.

Parameters:
pgmFile - File that contains a PGM image.
Returns:
A pixmap with the PGM image, or PRIMITIVE_WINDOW.value if the file does not contain a PGM magic number.
Raises:
RANGE_ERROR - The file is not in the PGM file format.

readPgm

const func PRIMITIVE_WINDOW: readPgm (in string: pgmFileName)

Reads a PGM file with the given pgmFileName into a pixmap.

Parameters:
pgmFileName - Name of the PGM file.
Returns:
A pixmap with the PGM image, or PRIMITIVE_WINDOW.value if the file cannot be opened or does not contain a PGM magic number.
Raises:
RANGE_ERROR - The file is not in the PGM file format.

str

const func string: str (in PRIMITIVE_WINDOW: pixmap, PGM)

Converts a pixmap into a string in PGM format.

Parameters:
pixmap - Pixmap to be converted.
Returns:
a string with data in PGM format.


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