[postgis-users] Get BBox from different kind of geometry

[doktoreas]

Hello everybody,
I have a db with different kind of geometry that I show using Geoserver and
OpenLayers. 
For creating a simple "zoom-to-feature" function, I need to get the BBox
value for each geometry; this is not a problem for polygon and lines ( with
envelope function)  but, as it's normal, can't be done for point.
My first idea is to get the point location and creating a custom BBox from
that by adding/subtracting a fixed value to the x,y.

Is there a better way for doing this?

Thanks
Luca
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