Hi Peter,
It sounds like you want to get involved with OpenMap 4.6.1's
com.bbn.openmap.tools.roads package. There are two layers, the
com.bbn.openmap.layer.shape.MultiRoadLayer and
com.bbn.openmap.layer.vpf.VPFRoadLayer, that use the routing tools in
the roads package. I suspect the VPFRoadLayer will give you an idea of
how to pull that information out of the database for route analysis.
While the layers are geared for display, you just need to get at the
OMGraphics of a layer to see the spatial geometries. If the layer is
an OMGraphicHandlerLayer, just ask it for it's list. Granted, what you
get on that list will probably be based on the map projection.
Hope this helps,
Don
On Nov 5, 2004, at 12:06 PM, Peter.Weinstein_at_Altarum.org wrote:
>
> Hi,
>
> I need to add an interactive layer to OpenMap that includes reasoning
> about
> personnel movement. I would greatly appreciate suggestions for how I
> should
> extend OpenMap to trap the loading of edge, point and area data from
> VMAP
> files. I imagine capturing the information with hooks somewhere down
> the
> stack from VPFLayer when preparing to draw, then accessing this
> information
> to support interaction in a new layer. There are a lot of classes in
> OpenMap where I might focus my attention, however, and the general
> orientation seems to be on graphical display rather than on
> representation
> of geographical objects (such as roads, swamps, etc.). So, I'd
> appreciate a
> suggestion to look at particular classes as places to potentially
> insert
> hooks. More general architectural advice would also be great.
>
> Thanks!
> Peter
>
> --------------------------------------
> Peter Weinstein, Ph.D.
> Information Technology Scientist
> Altarum Institute
> 734-302-4701
> http://www.altarum.org
> http://www.umich.edu/~peterw/
> "Those who can, build." - Robert Moses
> --------------------------------------
>
>
>
>
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>
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick_at_bbn.com
BBN Technologies, Cambridge, MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Received on Wed Nov 10 2004 - 08:04:28 EST