[Xastir-dev] Optimizing Shapefile drawing

[Curt, WE7U]

On Thu, 16 Dec 2004, Tom Russo wrote:

> The technique would be applicable to any layer for which sub-rectangles
> can be extracted.  For shapefiles that's trivial, because each point, polyline,
> and polygon has its bounding box stored with the file.  For others it might
> require that we compute one while generating the rtree.

At least it's an easy calculation, assuming that the lat/long values
are in some easily digestible format and datum.

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