News

2010-05-31

Thanks to twentysixdigital donation, some me functions and examples was implemented. New functions: polygon difference, polygon hole improved support; new examples: britain map and arrows. New build script

This project is a port of Java port of General Polygon Clipper library

Project is ActionScript 3 partial port of General Polygon Clipper library (http://www.cs.manchester.ac.uk/~toby/alan/software/).

This port is based on GPCJ Java port (http://www.seisw.com/GPCJ/GPCJ.html) and replicates its functionality.

Project is developed under BSD license but this license does not supersede

GPC license http://www.cs.manchester.ac.uk/~toby/alan/software/#Licensing
GPCJ license http://www.seisw.com/GPCJ/GpcjLicenseAgreement.txt

Supported and tested functionalities of GPCAS

Intersection, exclusive-or and union clip operations are supported.
Polygons may be comprised of multiple disjoint contours.
Contour vertices may be given in any order - clockwise or counter-clockwise.
Contours may be convex, concave or self-intersecting.
Contours may be nested (i.e. polygons may have holes).
Hole and external contours are differentiated in the result.
Coincident edges and degenerate regions are handled correctly.

Read license agreements before using.

If you find any issue please report.