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vector_tracer.py

This Python script traces SVG and CSV vector files using the discrete Fourier transform.

Required modules

  • sys
  • pathlib
  • re
  • math
  • numpy
  • matplotlib
  • xml.dom
  • svg.path
  • csv

Usage

Usage: vector_tracer.py [-h] [-c] input_path [color] [output_gif_path]

  -h               display this help and exit
  -c               draw circles

  input_path       SVG or CSV path
  color            outline color (default: black)
  output_gif_path  output GIF path (default: display)

  For color names, please check
  https://matplotlib.org/stable/gallery/color/named_colors.html

Examples

grasslogo.svg is also available from https://grass.osgeo.org/images/logos/grasslogo.svg. horse.csv and lion.csv were created using coordinates from https://andymac-2.github.io/fourier-polygon/. pi.csv was directly copied from https://dsp.stackexchange.com/a/59181/41245.

vector_tracer.py -c grasslogo.svg green fourier-grasslogo-with-circles.gif
vector_tracer.py grasslogo.svg green fourier-grasslogo.gif
vector_tracer.py horse.csv brown fourier-horse.gif
vector_tracer.py lion.csv darkgoldenrod fourier-lion.gif
vector_tracer.py pi.csv black fourier-pi.gif

fourier-grasslogo-with-circles.gif

fourier-grasslogo.gif

fourier-horse.gif

fourier-lion.gif

fourier-pi.gif

License

Copyright (C) 2021, Huidae Cho <https://idea.isnew.info/>

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.