#!/usr/bin/env python2
# -*- coding: utf-8 -*-
"""
Create and draw a star with varying node properties.

"""
#    Copyright (C) 2006 by 
#    Aric Hagberg <hagberg@lanl.gov>
#    Dan Schult <dschult@colgate.edu>
#    Manos Renieris, http://www.cs.brown.edu/~er/
#    Distributed with BSD license.     
#    All rights reserved, see LICENSE for details.

from __future__ import absolute_import
from __future__ import unicode_literals
from __future__ import print_function
from __future__ import division

__author__ = """Aric Hagberg (hagberg@lanl.gov)"""

from pygraphviz import *

A=AGraph()

# set some default node attributes
A.node_attr['style']='filled'
A.node_attr['shape']='circle'
A.node_attr['fixedsize']='true'
A.node_attr['fontcolor']='#FFFFFF'

# make a star in shades of red
for i in range(16):
    A.add_edge(0,i)
    n=A.get_node(i)
    n.attr['fillcolor']="#%2x0000"%(i*16)
    n.attr['height']="%s"%(i/16.0+0.5)
    n.attr['width']="%s"%(i/16.0+0.5)

print(A.string()) # print to screen
A.write("star.dot") # write to simple.dot
print("Wrote star.dot")
A.draw('star.png',prog="circo") # draw to png using circo
print("Wrote star.png")
