#!/usr/bin/env python2
# make an svg that shows a circular text where each letter is 'networked' to the others
# (c) roel roscam abbing 2018
# gplv3

import random, svgwrite

from math import sin, cos, pi

#place text in circle
w = 400
h = 400


doc = svgwrite.Drawing(filename = "circle.svg",
                                size = ("{}px".format(w), "{}px".format(h)))


font = '/home/r/.local/share/fonts/Unknown Vendor/OpenType/Grundschrift/Grundschrift_Regular.otf'

radius = 150

word = 'constellation'

letterpoints=[]
letterpoints2 =[]

text = svgwrite.container.Group(style="font-family:Arima Koshi;font-size:60px;fill:salmon;")

for i,letter in enumerate(word):
    x = sin((-pi*2)/len(word)*i+pi)*radius                            
    y = cos((-pi*2)/len(word)*i+pi)*radius
    # x = 15*i
    l = doc.text(letter,insert=(x+w/2, y+w/2))
    l2 = doc.text(letter,style='fill:snow;',insert=(x+w/2.02, y+w/2.02))

    letterpoints.append(l)
    text.add(l)
    text.add(l2)

connections = svgwrite.container.Group(style="fill:none;stroke:salmon;stroke-width:2px;stroke-dasharray:4px;stroke-opacity:0.2;stroke-linecap:round;")
for i in range(len(letterpoints)*2):
        points = random.sample(letterpoints,2)
        line = doc.line(
            start=(points[0].attribs['x'],points[0].attribs['y']),
            end=(points[1].attribs['x'],points[1].attribs['y'])
            )
        connections.add(line)

doc.add(connections)
doc.add(text)
    
doc.save()
# # for l in letterpoints:
# #     l.draw = True
# bot.finish()