DXF Circles to Points

CirclesToPoints.py

import ezdxf
import argparse

class DiameterToRadius(argparse.Action):
    def __call__(self, parser, namespace, values, option_string=None):
        print('%r %r %r' % (namespace, values, option_string))
        if values > 0:
            values = values/2.0
        setattr(namespace, self.dest, values)

parser = argparse.ArgumentParser(description="Converts circles to points in DXF File")
parser.add_argument("input", help="The input DXF File name")
parser.add_argument("output", help="The output DXF File name")
group = parser.add_mutually_exclusive_group()
group.add_argument("-r", "--radius", type=float, dest='radius',
                    help="maximum radius of circle to convert to point (Default=4)")
group.add_argument("-d", "--diameter", type=float, dest='radius', action=DiameterToRadius, metavar="DIAMETER",
                    help="maximum diameter of circle to convert to point (Default=8)")
parser.set_defaults(radius=4)
args = parser.parse_args()

if args.radius and args.radius < 0:
    parser.error("Cannot set radius less than zero")

dwg = ezdxf.readfile(args.input)

modelspace = dwg.modelspace()

for circle in modelspace.query('CIRCLE'):
    if circle.dxf.radius < args.radius:
        modelspace.delete_entity(circle)
        point = modelspace.add_point(circle.dxf.center, dxfattribs={'layer': circle.dxf.layer})
        print(circle)
        print(point)
dwg.saveas(args.output)

Opens a DXF file and converts all circles under a specified radius to points.