public static void ZoomTo(this DevExpress.XtraMap.Services.IZoomToRegionService zoomService, IEnumerable <Address> addresses, double margin = 0.25)
{
GeoPoint ptA = null;
GeoPoint ptB = null;
foreach (var address in addresses)
{
if (ptA == null)
{
ptA = address.ToGeoPoint();
ptB = address.ToGeoPoint();
continue;
}
GeoPoint pt = address.ToGeoPoint();
if (pt == null || object.Equals(pt, new GeoPoint(0, 0)))
{
continue;
}
ptA.Latitude = Math.Min(ptA.Latitude, pt.Latitude);
ptA.Longitude = Math.Min(ptA.Longitude, pt.Longitude);
ptB.Latitude = Math.Max(ptB.Latitude, pt.Latitude);
ptB.Longitude = Math.Max(ptB.Longitude, pt.Longitude);
}
ZoomCore(zoomService, ptA, ptB, margin);
}
static void ZoomCore(DevExpress.XtraMap.Services.IZoomToRegionService zoomService, GeoPoint ptA, GeoPoint ptB, double margin)
{
if (ptA == null || ptB == null || zoomService == null)
{
return;
}
double latPadding = CalculatePadding(ptB.Latitude - ptA.Latitude, margin);
double longPadding = CalculatePadding(ptB.Longitude - ptA.Longitude, margin);
zoomService.ZoomToRegion(
new GeoPoint(ptA.Latitude - latPadding, ptA.Longitude - longPadding),
new GeoPoint(ptB.Latitude + latPadding, ptB.Longitude + longPadding),
new GeoPoint(0.5 * (ptA.Latitude + ptB.Latitude), 0.5 * (ptA.Longitude + ptB.Longitude)));
}
public static void ZoomTo(this DevExpress.XtraMap.Services.IZoomToRegionService zoomService, Address pointA, Address pointB, double margin = 0.2)
{
ZoomCore(zoomService, pointA.ToGeoPoint(), pointB.ToGeoPoint(), margin);
}
