[Freegis-list] GPC- a polygon intersection library fwd from postgis-list)

[Adrian Custer]

Hey all,

A quick search did not pull this up on the web site.
So there's a non-free but semi free software:
1) main gpc site:
http://www.cs.man.ac.uk/aig/staff/alan/software/
2) gpc documentation:
http://www.cs.man.ac.uk/aig/staff/alan/software/gpc.html

3) MAVERIK ( a virtual reality system) This may be too far from the core
GIS needs but any future gis is going to need some visulaization system
http://aig.cs.man.ac.uk/maverik/index.htm

useful info even if it's not yet gpl,
adrian



-----Forwarded Message-----

From: simon mercier <simon.mercier at fadq.qc.ca>
To: postgis <postgis at yahoogroups.com>
Subject: [postgis] polygon intersection function
Date: 23 Jan 2002 14:59:11 -0500

hi

I need a function that give area from intersection of polygon geometry
in Postgres.  From previous comment of Dave B., we see that polygon
overlay function is style in the TODO list... :(  Is there someone
already work on this type of function? I find in mapserver list
archive(from Stephen Lime)  a C library to do this function.

http://www.cs.man.ac.uk/aig/staff/alan/software/gpc.html

Is there other library to do this or anything else to help me?

--
Simon Mercier
Direction des technologies de l'information
La Financière agricole du Québec
5825, rue Saint-Georges
Lévis, Québec,Canada G6V 4L2
http://www.financiereagricole.qc.ca/