Clipper README

Description

The Javascript Clipper library performs clipping and offsetting for both lines and polygons. All four boolean clipping operations are supported - intersection, union, difference and exclusive-or. Polygons can be of any shape including self-intersecting polygons.

Javascript Clipper is a port of Angus Johnson’s Clipper library: https://sourceforge.net/projects/polyclipping/ (opens in a new tab)

LIVE DEMO: http://jsclipper.sourceforge.net/6.2.1.0/main_demo.html (opens in a new tab)

Information and examples: http://jsclipper.sourceforge.net/6.2.1.0/ (opens in a new tab)

Donate Javascript Clipper Project: https://sourceforge.net/p/jsclipper/wiki/Donations/ (opens in a new tab)

Use cases:

• Over 1500 schools in the UK uses Javascript Clipper in Digimap for Schools service. Digimap for Schools is an online mapping service for use by teachers and pupils. Read more: https://mobilegeo.wordpress.com/ (opens in a new tab) and http://digimapforschools.edina.ac.uk/cosmo-free/osmapper (opens in a new tab)

Javascript Clipper Web Site (opens in a new tab)

Features

• Line and polygon clipping - intersection, union, difference & xor
• Line and polygon offsetting with 3 types of joining - miter, square and round
• Polygons can be of any shape, including self-intersecting polygons
• Minkowski Addition and Minkowski Difference functions included
• The library is written in Javascript
• Comprehensive documentation
• Demos use inline SVG and Canvas libraries
• The library is significantly faster than commercial alternatives
• Uses Tom Wu’s fast big integer library
• UMD support

Categories

Algorithms, Graphics

Links

• Documentation (opens in a new tab)
• ChangeLog (opens in a new tab)

License

Boost Software License (BSL1.0) (opens in a new tab)