This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Project Description

a 2D scene graph based on SVG with OpenGL backend

Goals & non-goals


  • 2D scene graph suitable for interactive rendering
  • minimal set of dependencies


  • full SVG implementation
  • optimized for speed


  • pythonic API modeled after SVG spec & semantic
  • SVG parsing and serialization
  • scale dependent polygonalization
  • analytical picking
  • sub-pixel strokes rendering enhancement through width and opacity correction
  • per-pixel gradients
  • two modes text rendering: raster by freetype2 for high quality AA at small sizes, vector otherwise

SVG spec


  • shapes: path, rect, circle, ellipse, line, polyline, polygon, image
  • text: (excluding decoration, text on path)
  • structure: group, use (including attributes inheritance)
  • painting: solid color, linear and radial gradients (including units, transform, spread, href);
  • fill: rule (nonzero, evenodd)
  • stroke: cap (butt, round, square), join (miter, round, bevel), miterlimit
  • multi-pass rendering: clipping, masking, object opacity
  • transforms: translate, rotate, scale, skewX, skewY


  • tspan
  • painting: pattern
  • stroke: dash, marker
  • filters




Optional dependencies

Needed to find fonts, fallbacks on FreeFont otherwise.

on the mac:


  • sauvage by S. Conversy
  • SVGL by S. Conversy & J.-D. Fekete
Release History

Release History


This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
seagull-0.1.tar.gz (34.0 kB) Copy SHA256 Checksum SHA256 Source Mar 27, 2014

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting