generate_grid.py

#!/usr/bin/env python3

import argparse
import sys

parser = argparse.ArgumentParser(description='Generate a grid for 3270font.')

parser.add_argument('origin_x', type=float, help='Origin X')
parser.add_argument('origin_y', type=float, help='Origin Y')
parser.add_argument('bottom', type=float, help='Bottom Y')
parser.add_argument('top', type=float, help='Top Y')
parser.add_argument('left', type=float, help='Leftmost X')
parser.add_argument('right', type=float, help='Rightmost X')
parser.add_argument('delta_x', type=float, help='Division width')
parser.add_argument('delta_y', type=float, help='Division height')

args = parser.parse_args()

if __name__ == '__main__':
    print('Grid')

    # Draw the origins
    print('{:.0f} 1300 m 0\n{:.0f} -700 l 1024\n  Named: "Origin X"'.format(
        args.origin_x, args.origin_x))
    print('-1000 {:.0f} m 0\n2000 {:.0f} l 1024\n  Named: "Origin Y"'.format(
        args.origin_y, args.origin_y))

    # Draw horizontals above zero.
    y = args.origin_y + args.delta_y
    while y < args.top + args.delta_y:
        print('-1000 {:.0f} m 0\n2000 {:.0f} l 1024'.format(
            round(y, 0), round(y, 0)))
        y += args.delta_y

    # Draw horizontals below zero.
    y = args.origin_y - args.delta_y
    while y > args.bottom:
        print('-1000 {:.0f} m 0\n2000 {:.0f} l 1024'.format(
            round(y, 0), round(y, 0)))
        y -= args.delta_y

    # Draw verticals to the right of the origin
    x = args.origin_x + args.delta_x
    while x < args.right + args.delta_x:
        print('{:.0f} 1300 m 0\n{:.0f} -700 l 1024'.format(
            round(x, 0), round(x, 0)))
        x += args.delta_x

    # And to the left
    x = args.origin_x - args.delta_x
    while x > args.left:
        print('{:.0f} 1300 m 0\n{:.0f} -700 l 1024'.format(
            round(x, 0), round(x, 0)))
        x -= args.delta_x

    print('EndSplineSet')