[postgis-users] GEOS Upgrade to JTS 1.7 Parity

[Paul Ramsey]

FYI, to everyone in the PostGIS and GEOS community.  You may have  
noticed a larger number of new commits than usual flowing into the  
GEOS CVS tree.  This is because we have started re-synchronizing the  
GEOS code with the latest version of JTS, which is 1.7.  The previous  
synchronization was done for JTS 1.4, so there many new things coming  
in.

This work is bringing in some new structures and algorithms which  
should hopefully allow us to complete the final robustness steps for  
union, intersection, and difference.  If you are interested in  
funding this last mile, please contact me offline.

The JTS 1.7 synchronization is being funded by two members of the  
GEOS corporate user community, Autodesk (who use it in their new  
MapGuide Open Source offering) and Safe Software (who use it in their  
FME).  I want to thank Autodesk and Safe for their support and great  
community spirit in helping this development along.

Paul