GRASS GIS 7 Programmer's Manual  7.5.svn(2018)-r72636
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bres_line.c File Reference
#include <grass/gis.h>
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void G_bresenham_line (int x0, int y0, int x1, int y1, int(*point)(int, int))
 Bresenham line algorithm. More...

Function Documentation

void 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.

x0,y0first point
x1,y1end point
pointpointer to point plotting function

Definition at line 30 of file bres_line.c.