C1.WPF.Maps.IMapVirtualSource.Request
Request Method
Request(double, double, Point, Point, Action<ICollection>)
Called from MapVirtualLayer when new items are needed for a map region.
Declaration
void Request(double minZoom, double maxZoom, Point lowerLeft, Point upperRight, Action<ICollection> callback)Parameters
| Type | Name | Description |
|---|---|---|
| double | minZoom | The minimum zoom of the region. |
| double | maxZoom | The maximum zoom of the region. |
| Point | lowerLeft | The lower left coordinate of the region, in geographic coordinates. |
| Point | upperRight | The upper right coordinate of the region, in geographic coordinates. |
| Action<ICollection> | callback | A delegate to call with the elements inside the specified region. |