runsphere

#!/usr/bin/env python3
from sphere import sphere
import argparse

if __name__ == "__main__":
    optparser = argparse.ArgumentParser(description='Sphere properties computation')
    optparser.add_argument('radius', type=float, nargs='?', default=None, help='Sphere radius')
    optparser.add_argument('-v', action='store_true', help='get volume')
    optparser.add_argument('-s', action='store_true', help='get surface')
    optparser.add_argument('-d', action='store_true', help='get diameter')
    optparser.add_argument('--load', help='load from file')
    optparser.add_argument('--save', help='save to file')
    opts = optparser.parse_args()
    if opts.radius == None and opts.load == None:
        optparser.error("you must supply a radius")
    if opts.radius and opts.load:
        optparser.error("you must not supply a radius when loading from file")

    if opts.load:
        print("loading Sphere from from file %s" % opts.load)
        my_sphere = sphere.loadSphere(opts.load)
    else:
        my_sphere = sphere.Sphere(opts.radius)
    print("%s" % my_sphere)
    print("  radius is %s" % my_sphere.radius)
    if opts.v:
        print("  volume is %s" % my_sphere.volume())
    if opts.s:
        print("  surface is %s" % my_sphere.surface())
    if opts.d:
        print("  diameter is %s" % my_sphere.diameter())
    if opts.save:
        print("dumping Sphere to file %s" % opts.save)
        my_sphere.dump(opts.save)