bres_line.c File Reference

#include <grass/gis.h>

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Functions
int	G_bresenham_line (int x0, int y0, int x1, int y1, int(*point)(int, int))
	Bresenham line algorithm. More...

Function Documentation

int G_bresenham_line	(	int	x0,
		int	y0,
		int	x1,
		int	y1,
		int(*)(int, int)	point
	)

Bresenham line algorithm.

Draws a line from x1,y1 to x2,y2 using Bresenham's algorithm. A routine to plot points must be provided, as is defined as: point(x, y) plot a point at x,y.

This routine does not require a previous call to G_setup_plot() to function correctly, and is independent of all following routines.

Parameters

[in]	x0
[in]	y0
[in]	x1
[in]	y1
[in]	point	pointer to point plotting function

Returns

always returns 0

Definition at line 38 of file bres_line.c.

References point.