Hello
Is there any guidlines/functions on how to ensure a series is visible in a XamGeographicMap?
I have a GeographicPolylineSeries. When the form is loaded I want to zoom in on the series and make it is visible with a little margin.
mapControl.WindowRectMinWidth = 1/ Math.Pow(2, maxZoomLevel -1) did the trick.
I just discovered this broke another function I had on the Map.
I am using offline tiles and I want to stop the user from zooming if he reaches the max zoom level (which is 8, 9 or 10). I did that when I initialized the map:
mapControl.WindowRectMinWidth = mapControl.WindowsRect.Width / Math.Pow(2, maxZoomLevel -1)
It worked great. But after setting the new WindowRect I can now zoom further that max zoom level.
Is that because the Width of the WindowRect is changing?
Do you have another solution to set limits on the zoom level?
Thanks.
var rect = mapControl.GetZoomFromGeographic(new Point(minLongtitude, maxLatitude), new Point(maxLongtitude, minLatitude));
... + a little offset worked.
Hi logimatic,
Unfortunately there is no zoom to functionality or 'view all' capability when it comes to a series that takes up little space in the map. If you are manually providing points to the polyline series then you should be able to calculate the min/max longitude and latitude from all those points and with the min/max you can update the maps WindowRect to encompass that rectangle. GetZoomFromGeographic will help you construct that new window rect.
// calculate the min/max longitude and latitudes of your polyline points var minLongitude = GetMinLongitude(); var maxLongitude = GetMaxLongitude(); var minLatitude = GetMinLatitude(); var maxLatitude = GetMaxLatitude(); // use the GetZoomFromGeographic method to generate a new WindowRect var rect = this.geoMap.GetZoomFromGeographic(new Point(minLongitude, minLatitude), new Point(maxLongitude, maxLatitude)); this.geoMap.WindowRect = rect;