private void MapViewModel_RequestViewpoint(object sender, Viewpoint viewpoint)
{
var envelope = viewpoint.TargetGeometry.Extent;
if (envelope.Height > 0)
{
envelope = new Esri.ArcGISRuntime.Geometry.Envelope(envelope.XMin, envelope.YMin - envelope.Height * (64 / _mapView.Bounds.Height),
envelope.XMax, envelope.YMax, envelope.SpatialReference);
}
_mapView.SetViewpointGeometryAsync(envelope, 100);
}
public override Esri.ArcGISRuntime.Geometry.Geometry FromXml(XmlNode node, XmlNamespaceManager mgr)
{
if (node != null && node.HasChildNodes)
{
if (node.FirstChild.Attributes.Count > 0 &&
node.FirstChild.Attributes[0].Name == "srsName")
{
int refSystem;
if (!int.TryParse(node.FirstChild.Attributes[0].Value.ToString().LastPart(char.Parse(":")), out refSystem))
{
refSystem = 0;
}
_spatialReferenceSystem = refSystem;
}
if (node.ChildNodes[0].ChildNodes.Count == 2)
{
var lowerLeft = node.ChildNodes[0].ChildNodes[0].InnerText;
var upperRight = node.ChildNodes[0].ChildNodes[1].InnerText;
var llPos = lowerLeft.Replace(@"\t", " ").Replace(@"\n", " ").Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries);
var urPos = upperRight.Replace(@"\t", " ").Replace(@"\n", " ").Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries);
double llX;
double llY;
if (!double.TryParse(llPos[0], NumberStyles.Float, new CultureInfo("en-US"), out llX))
{
llX = 0.0;
}
if (!double.TryParse(llPos[1], NumberStyles.Float, new CultureInfo("en-US"), out llY))
{
llY = 0.0;
}
double urX;
double urY;
if (!double.TryParse(urPos[0], NumberStyles.Float, new CultureInfo("en-US"), out urX))
{
urX = 0.0;
}
if (!double.TryParse(urPos[1], NumberStyles.Float, new CultureInfo("en-US"), out urY))
{
urY = 0.0;
}
var createdEnvelope =
new Esri.ArcGISRuntime.Geometry.Envelope(llX, llY, urX, urY, new Esri.ArcGISRuntime.Geometry.SpatialReference(_spatialReferenceSystem));
return(createdEnvelope);
}
}
return(null);
}
