Hi Tony,
There's nothing written right now that will automatically convert an
OMGraphic to a GeoExtent. That ShapeGeoIndex class is the closest thing to
it. That said, it is a model of how you could enter VPF data into a
GeoIndex. You can gather OMGraphics for VPF and then translate them.
If you want to know if a path intersects a land mass using DTED, you do
something similar to the com.bbn.openmap.layer.terrain.ProfileGenerator -
get the points along your path, and then use a DTEDFrameCache to query for
elevations for lat/lons along the path. I'm not sure how you would use DTED
with the GeoIndex, unless you created vector objects from the grid data.
Hope this helps,
Don
On Tue, Jun 28, 2011 at 9:49 PM, Tony Vasile <avasile_at_csc.com.au> wrote:
>
> Hi Don,
> Can the GeoExtent code work with VMAP or DTED data? Or is it only
> GeoExtent objects? I also need to know if the path goes through a landmass.
>
> Tony Vasile
> Senior Software Engineer
> CSC
>
> Level 3B, 26 Talavera Road Macquarie Park NSW 2113 Australia
> GBS | p: +61 2 9034 2404 | f: +61 2 9034 2398 | avasile_at_csc.com |
> www.csc.com
>
>
> Please consider the environment before printing this e-mail.
>
> CSC - This is a private message. If you are not the intended recipient,
> please delete without copying and kindly advise us by e-mail of the mistake
> in delivery. Note: Regardless of content, this e-mail shall not operate to
> bind CSC to any order or other contract unless pursuant to explicit written
> agreement or government initiative expressly permitting the use of e-mail
> for such purpose • CSC Australia Pty Limited; Registered Office: 26 Talavera
> Road, Macquarie Park NSW 2113 Australia; Incorporated in Australia ACN: 008
> 476 944
>
>
>
> From: Don Dietrick <dfdietrick_at_gmail.com> To:
> Tony Vasile <avasile_at_csc.com.au>
> Cc: openmap-users_at_bbn.com Date: 28/06/2011 11:09 PM Subject: Re: [OpenMap
> Users] Intesection of a path
> ------------------------------
>
>
> Hi Tony,
>
> The com.bbn.openmap.geo package does this intersection work for you.
> If you have a group of OMGraphics that you want to test for
> intersections, you can load them into a GeoExtentIndex (after
> converting them to GeoExtent objects), and then use the Intersection
> class to test.
>
> You can use the com.bbn.openmap.dataAccess.shape.ShapeGeoIndex as an
> example of loading a ExtentIndex from a shape file. The
> com.bbn.openmap.layer.test.GeoIntersectionLayer is an example of
> calculating intersections with drawn objects. You can add it to
> OpenMap to see it in action, the main intersection tests are in the
> calculateIntersectionsWithDrawnList method.
>
> Hope this helps,
>
> Don
>
> On Tue, Jun 28, 2011 at 2:43 AM, Tony Vasile <avasile_at_csc.com.au> wrote:
> >
> > I trying to draw a path from one OMGraphic to another but I want to know
> if
> > there is anything in the way, for example another OMGraphic or a
> landmass,
> > and draw the path around the obstacle. Is there a simple way to do this
> sort
> > of intersection or do I need to write something from scratch.
> >
> > Tony Vasile
> > Senior Software Engineer
> > CSC
> >
> > Level 3B, 26 Talavera Road Macquarie Park NSW 2113 Australia
> > GBS | p: +61 2 9034 2404 | f: +61 2 9034 2398 | avasile_at_csc.com |
> > www.csc.com
> >
> >
> > Please consider the environment before printing this e-mail.
> >
> > CSC - This is a private message. If you are not the intended recipient,
> > please delete without copying and kindly advise us by e-mail of the
> mistake
> > in delivery. Note: Regardless of content, this e-mail shall not operate
> to
> > bind CSC to any order or other contract unless pursuant to explicit
> written
> > agreement or government initiative expressly permitting the use of e-mail
> > for such purpose • CSC Australia Pty Limited; Registered Office: 26
> Talavera
> > Road, Macquarie Park NSW 2113 Australia; Incorporated in Australia ACN:
> 008
> > 476 944
> >
>
>
>
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Received on Wed Jun 29 2011 - 11:25:57 EDT