[mapserver-dev] RFC 72: Adding GEOMTRANSFORM to Layer/Label Objects

[Brent Fraser]

Steve,

   Very exciting!  My main use-case would be for labeling rivers "above" 
the rivers.  I see that GEOS has implemented a SingleSideBuffer / 
OffsetCurve, which may help in the implementation (could be a challenge 
with interpreting left/right vs above/below though).

   Performance could be a problem when requesting features from a large 
datastore since the spatial filter needs to be applied to the buffered 
feature.  Perhaps expanding the MBR of the spatial fliter by the buffer 
value would be a solution...

Best Regards,
Brent Fraser


On 6/29/2011 10:21 PM, Lime, Steve D (DNR) wrote:
> Hi All: I've started work on a proposal to extend logical expressions that include GEOS operators like buffer and difference to layer/label-levels. I think there could be some pretty neat uses for such functionality. Should be online shortly at:
>
>    http://www.mapserver.org/development/rfc/ms-rfc-72.html
>
> Comments welcome...
>
> Steve
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