/// <summary>
/// Handler for zoom level change.
/// This handler will deal with overlays visibility, change MARKERS images according to zoom level.
/// </summary>
/// <param name="gmap">Map control</param>
public static void OnMapZoomChanged(GMapControl gmap)
{
gmap.HoldInvalidation = true;
int iz = GMapMarkerImages.ReturnImageLevelFromZoom(gmap.Zoom);
GMapOverlay overlay = gmap.Overlays[GMapWrapper.MARKERS];
foreach (GMapMarker m in overlay.Markers)
{
GMapMarkerImages.ChangeImageAccordingToZoom((GMapMarkerImages)m, iz);
}
gmap.Refresh();
// on désactive pour les zoom très éloignés certains overlay
GMapWrapper.HandleOverlaysVisibility(gmap, iz, gmap.Zoom);
}
/// <summary>
/// Hide overlays of a map control if needed.
/// Some overlays will be hiden for low zoom levels
/// Zoom level will be automatically retrieved from map control
/// </summary>
/// <param name="gmap">Map control</param>
public static void HandleOverlaysVisibility(GMapControl gmap)
{
int iz = GMapMarkerImages.ReturnImageLevelFromZoom(gmap.Zoom);
GMapWrapper.HandleOverlaysVisibility(gmap, iz, gmap.Zoom);
}