Script that draws Hexagons with Python and Cairo

hex-cairo.py

#!/usr/bin/env python
# encoding: utf-8

import cairo
import rsvg
import math

WIDTH, HEIGHT  = (500, 500)
HEX_W, HEX_H = (50, 50)

def draw_hex(ctx, x0, y0):
    ctx.move_to(x0, y0)
    ctx.rel_move_to(HEX_W/3.0, 0)
    ctx.rel_line_to(HEX_W/3.0, 0)
    ctx.rel_line_to(HEX_W/3.0, HEX_H/3.0)
    ctx.rel_line_to(0, HEX_H/3.0)
    ctx.rel_line_to(-HEX_W/3.0, HEX_H/3.0)
    ctx.rel_line_to(-HEX_W/3.0, 0)
    ctx.rel_line_to(-HEX_W/3.0, -HEX_H/3.0)
    ctx.rel_line_to(0, -HEX_H/3.0)
    ctx.rel_line_to(HEX_W/3.0, -HEX_H/3.0)
    ctx.close_path ()
    ctx.stroke ()


if __name__ == '__main__':
    fo = file('hex.svg', 'w')
    surface = cairo.SVGSurface(fo, WIDTH, HEIGHT)
    ctx = cairo.Context(surface)
    ctx.set_line_width(3)
    ctx.set_source_rgb(0, 0, 0)

    p = [0,0]
    for i in range(10):
        for n in range(10):
            draw_hex(ctx, *p)
            p[1] += HEX_H
        p[1] = 0
        p[0] += HEX_W

    surface.finish()
    fo.close()