OGREnvelope

[Aleksey]

Frank,

What do I use in GDAL to represent rectangles? OGREnvelope seems the only 
choice, but contains only the four corners. Do you plan to (eventually) have 
some methods, like e.g. union() and intersect() with another rectangle, as 
well as simple things for convenience, like width(), height(), left(), top(), 
etc.?
These would come handy for example, when working with data extents of several 
datasets. If you think it's worth doing, I could do a quick draft job and 
send it to you for review.

Thanks,

Aleksey