BresLine(D4nfb)

BresLine -- Bresenham line structure

Synopsis

#include "miscstruct.h"

Description

Structure definition

typedef struct _BresLine {
	short	x1;
	short	y1;
	short	signdx;
	short	signdy;
	short	axis;
	short	len;
	int	e;
	int	e1;
	int	e2;
} BresLine, *BresLinePtr;

Structure members

The members are:

x1, y1: line starting points
signdx, signdy: direction flags
axis: major axis
len: length of line
e, e1, e2: decision variables

Version applicability

This structure is supported for NFB drivers on all releases of SCO OpenServer 5, SVR5, and AIX 5L.

References

For more information about Bresenham lines, see Foley and Van Dam, Fundamentals of Interactive Computer Graphics.