[OpenLayers-Users] Draggable (Gunsight) Control?
Sveen Atle Frenvik (Geomatikk IKT)
Atle.Frenvik.Sveen at geomatikk.no
Wed Jul 21 08:05:13 EDT 2010
On 07/21/2010 01:55 PM, Andrew Hughes wrote:
I would have thought that draggable markers would be a better place to start than the overview. This is very similar identical to a draggable marker except it doesn't pan/follow the map.
Well, I guess both approaches could work, but markers (or vector features) is rather closely tided to moving with the map, and you then would have to override a lot of that behaviour..
-a
On Wed, Jul 21, 2010 at 9:01 PM, Sveen Atle Frenvik (Geomatikk IKT) <Atle.Frenvik.Sveen at geomatikk.no> wrote:
On 07/21/2010 01:15 PM, Andrew Hughes wrote:
Hi All,
I have a unique requirement that I need help with. Perhaps this is something new...
Well, the fact that you need this does not mean that anyone here is entiteled to make it for you..
The best way to describe it is to look at this: http://www.youtube.com/watch?v=sXotq-W5HmA&feature=channel but the gunsight is not always in the center, you can drag it around in the map viewport.
So,
+ I need a Gunsight control (which uses Map.getLonLatFromPixel() to work out the geographical focus of where the gun is pointing).
+ The Gunsight does not move when the map is panned/moved (it's tied to pixel position - not geographical)
+ The Gunsight needs to be draggable within the map view port <div> (can't drag outside the viewport) a non-draggable/fixed pixel position solution (i.e. center of map viewport) would be an unacceptable.
I think a good starting point could be looking at the OverviewMap control, which uses a div placed on top of the map, and then make a control yourself based on somewhat the same concept.
Good luck!
Thanks && Cheers :)
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Atle Frenvik Sveen
Utvikler
Geomatikk IKT AS
tlf: 45 27 86 89
atle.frenvik.sveen at geomatikk.no
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Users at openlayers.org
http://openlayers.org/mailman/listinfo/users
--
Atle Frenvik Sveen
Utvikler
Geomatikk IKT AS
tlf: 45 27 86 89
atle.frenvik.sveen at geomatikk.no
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