# Clippoly

Clippoly is an algorithm to clip two 2D polygons. Clipping of polygons
is the process where boolean operations are performed
on the area of the polygons.
A descripion of the algorithm
is available as well as
some comments about the code.
On 7 July 1995 I have submitted a paper on
this algorithm to ACM
Transactions on Graphics, which is NOT accepted for publication.

## History

The code is written while Klamer Schutte was performing his PhD work at
the Laboratory for Measurement
and Instrumentation, University of Twente. It has been worked
towards a usable quality while Klamer Schutte was at Pattern
Recognition Group, now the Quantitative
Imaging Group of the Delft University of Technology. Since Klamer
left there the software remained available through the Pattern
Recognition Group web pages until the end of 2004. Since the start of
2005 the code is made available through the SourceForge ClipPoly
project.

## Download

Code can be downloaded from the SourceForge ClipPoly
download page.

## Related projects

Gregg
Leichtman, Ph.D. has made the code numerically more stable, and has
ported it to the Mac. Also, he performed a port so that the code can be
used from MatLab as a MEX file.

Since Gregg no longer has a dedicated web site I have a
copy of his files.

Michael V. Leonov has
ported the code to C, and extended the algorithm to allow holes. He
documented this on his clippoly page.

Alan
Murta has a polygon
clipper based on the Vatti algorithm available.

Project hosted by: