[geos-devel] FIXED: problem with GEOS buffer(0) -- JTS works

strk at refractions.net strk at refractions.net
Tue Aug 23 04:47:00 EDT 2005

On Mon, Aug 22, 2005 at 09:04:11PM -0400, dblasby at openplans.org wrote:
> Thanks for the info on JTS & postgis, strk.
> I'm interested to see JTS in postgis since there's a lot of JTS
> functionality that would be good in PostGIS (like the topology
> preserving generalization functions).  Not to mention that its easier
> writing JTS-java code than PostGIS/GEOS C++ -- at least for a java
> person like me!

Note that you won't get the new functionalities just building
postgis against JTS. A JTS wrapper is still needed, and current
one contains exactly the same functionalities as the GEOS wrapper.
The idea is to be able to compare the two implementations.

If topology-preserving generalization is finished (IIRC Martin
told me it was difficult to implement when I suggested this)
I'll be happy to port it to GEOS and implement wrappers for
both implementations.

> Unfortunately, i dont have a checkout of postgis & GEOS on my windows
> box (nor do I have a C++ compiler etc).  I'll give it a try when I get
> my linux box later this week.
> Getting OpenSource C++ code to compile on a windows box is a lot of work
> - it would be great if there were nightly geos builds for windows (it
> would save a lot of people lots of work, and you could get people like
> me to test between releases).  Does the linux GCC have cross-compiling
> options?

I think some people did compile GEOS on windows.
GCC does have cross-compiling capabilities, but I never used them,
so can't help.


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