#! /usr/bin/python3 -t

PROG_DESC = "Outputs an SVG 'roadkill' diagram for the acetylene diolate anion"

import math; from math import sqrt,sin,cos,pi
import rn
import sys, os, re
import mformula
import mformula_oxocarbon; from mformula_oxocarbon import \
  build_formula_cyclic_CO_n
import mformula_svg


def image_name(style):
  fname = __file__
  imgname = re.sub(r'.*[/]', "", fname[0:-3]) + \
    "_style" + style
  return imgname

def image_descr(style):
  fname = __file__
  imgname = re.sub(r'.*[/]', "", fname[0:-3])
  descr = "Structural formula of " + re.sub(r'[_]', " ", imgname)
  descr += "\n" + \
    "\n" + \
    mformula_svg.style_descr(style)
  return descr

def build_formula(svg):
  fm = build_formula_cyclic_CO_n(svg,2,-2,"OO")
  return fm