For the people interested, I have just commited in CVS of FMaps a new
PostgreSQL type called geoobj.
It is a very early release as I want to have early feedback.
It is not complete and has many bugs, but it should give an overview of
the type and the coding of it. It tries to follow the OpenGIS
specification, but it is not compliant, as the OpenGIS specification has
been made by database developers and not GIS people.
I'm now trying to index the type using GIST, when done, then I will add
some other object types in the spec. It is neraly complete, but I still
have some strange results. Need to investigate.
For the moment you have:
POINT (1 2 3)
LINESTRING (1 2 3, 4 5 6, 7 8 9)
POLYGON((1 2 3,4 5 6, 7 8 9, 3 4 5))
BOX( 1 2 3, 4 5 6)
envelope(obj) rteurns the bounding box (BOX) of any geoobj.
I'm trying to have objects that are easy to implement using OpenGL.
To get a copy of the code: go to http://fmaps.sourceforge.net/ got to
the CVS repository and go to FMaps/src/geoobj/
Or directly:
http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/FMaps/src/geoobj/?cvsroot=fmaps
The fmaps application is not yet using this type so it is broken till it
uses the new type....
Cheers
Franck@sopac.org