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Ticket Q508787
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Zoom on map with Ptv Loxane

created 12 years ago

Hi DevExpress,

I use Ptv Loxane component to take a map provider with gif format.
I check the Custom tile provider sample (http://www.devexpress.com/Support/Center/Example/Details/E3680).

In E3680 example, I see three parameters to obtain a zone (int zoomLevel, int tilePositionX, int tilePositionY) of getZoneByPosition method.
With Ptv Loxane, I give latitude and longitude position of left Top point and right Bottom point.
How I can make a link between yours parameters and mine?
Have you already seen this problem ?

Regards
Fabrice

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Answers approved by DevExpress Support

created 12 years ago (modified 12 years ago)

Hi,
Use the LayerBase.ViewportChanged event to get the geographical coordinates of the map view port (left top and right bottom corners of the visual map).
The GetTileByZoomLevel method needs tile positions for each zoom level according to the Deep Zoom terms. Note that the map zero zoom level corresponds to the zero deep zoom.

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