File Writing [PGM/PPM Library]

To write a file, the caller specifies the dimensions and a callback. More...

Collaboration diagram for File Writing:

Classes
struct	pgmppm::color_t
Modules
	File Reading
	Caller provides the stream to be read, and two callbacks.
typedef int(*	pgmppm::pgm_pixel_fn )(IN void *context, IN int x, IN int y)
typedef color_t(*	pgmppm::ppm_pixel_fn )(IN void *context, IN int x, IN int y)
void	pgmppm::writePgm (IO std::ostream &out, IN int width, IN int height, IN int max_gray,IN pgm_pixel_fn fn, IN void *context)
	write a pgm file to an output stream
void	pgmppm::writePpm (IO std::ostream &out, IN int width, IN int height, IN int max_color, IN ppm_pixel_fn fn, IN void *context)

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Detailed Description

To write a file, the caller specifies the dimensions and a callback.

The file-writing routine will call back to retrieve per-pixel info.

These are designed to be safe and agnostic to image storage, not fast.

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Typedef Documentation

typedef int(* pgmppm::pgm_pixel_fn)(IN void *context, IN int x, IN int y)

Definition at line 75 of file pgmppm.h.

typedef color_t(* pgmppm::ppm_pixel_fn)(IN void *context, IN int x, IN int y)

Definition at line 92 of file pgmppm.h.

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Function Documentation

void pgmppm::writePgm	(	IO std::ostream &	out,
		IN int	width,
		IN int	height,
		IN int	max_gray,
		IN pgm_pixel_fn	fn,
		IN void *	context
	)

write a pgm file to an output stream

void pgmppm::writePpm	(	IO std::ostream &	out,
		IN int	width,
		IN int	height,
		IN int	max_color,
		IN ppm_pixel_fn	fn,
		IN void *	context
	)