rc_rasterize.h File Reference

RAPP Compute chain code line rasterization. More...

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Functions
RC_EXPORT int	rc_rasterize_4conn (char *line, int x0, int y0, int x1, int y1)
	Rasterize a 4-connectivity chain code.
RC_EXPORT int	rc_rasterize_8conn (char *line, int x0, int y0, int x1, int y1)
	Rasterize an 8-connectivity chain code.

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Detailed Description

RAPP Compute chain code line rasterization.

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Function Documentation

RC_EXPORT int rc_rasterize_4conn	(	char *	line,
		int	x0,
		int	y0,
		int	x1,
		int	y1
	)

Rasterize a 4-connectivity chain code.

Parameters:

[out]	line	Line chain code string with at least abs(x1 - x0) + abs(y1 - y0) + 1 bytes.
	x0	X coordinate of the start position.
	y0	Y coordinate of the start position.
	x1	X coordinate of the end position.
	y1	Y coordinate of the end position.

Returns:

The length of the chain code, excluding the NUL-termination.

RC_EXPORT int rc_rasterize_8conn	(	char *	line,
		int	x0,
		int	y0,
		int	x1,
		int	y1
	)

Rasterize an 8-connectivity chain code.

Parameters:

[out]	line	Line chain code string with at least max(abs(x1 - x0), abs(y1 - y0)) + 1 bytes.
	x0	X coordinate of the start position.
	y0	Y coordinate of the start position.
	x1	X coordinate of the end position.
	y1	Y coordinate of the end position.

Returns:

The length of the chain code, excluding the NUL-termination.