const func PRIMITIVE_WINDOW: readPbm (inout file: pbmFile)

Reads a PBM (portable bitmap) image file into a pixmap.

Parameters:

pbmFile - File that contains a PBM image.

Returns:

A pixmap with the PBM image, or PRIMITIVE_WINDOW.value if the file does not contain a PBM magic number.

Raises:

RANGE_ERROR - The file is not in the PBM file format.

const func PRIMITIVE_WINDOW: readPbm (in string: pbmFileName)

Reads a PBM file with the given pbmFileName into a pixmap.

Parameters:

pbmFileName - Name of the PBM file.

Returns:

A pixmap with the PBM image, or PRIMITIVE_WINDOW.value if the file cannot be opened or does not contain a PBM magic number.

Raises:

RANGE_ERROR - The file is not in the PBM file format.

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

Converts a pixmap into a string in PBM format.

Parameters:

pixmap - Pixmap to be converted.

Returns:

a string with data in PBM format.