public static bool ReadPolygonFromFile(string filePath, out PolygonViewModel polygon)
{
#region Line reading methods
(double longitute, double latitude)? ReadPointFromLine(string line)
{
// Split line into parts and trim both
string[] point = line.Split(',').Select(x => x.Trim(' ')).ToArray();
if (point.Length == 2 &&
double.TryParse(point[0], System.Globalization.NumberStyles.Any,
CultureInfo.InvariantCulture, out double longitude) &&
double.TryParse(point[1], System.Globalization.NumberStyles.Any,
CultureInfo.InvariantCulture, out double latitude))
{
return(longitude, latitude);
}
return(null);
}
(string attributeKey, string attributeValue)? ReadAttributeFromLine(string line)
{
string[] pair = line.Split(':').Select(x => x.Trim(' ')).ToArray();
if (pair.Length == 2)
{
return(pair[0], pair[1]);
}
return(null);
}
#endregion
string[] textPolygon = _fSHelper.ReadLines(filePath);
PolygonViewModel polygonVM = new PolygonViewModel()
{
Fill = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Blue),
Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Green),
StrokeThickness = 2,
Opacity = 0.6,
};
try
{
foreach (string line in textPolygon)
{
if (!string.IsNullOrEmpty(line))
{
if (char.IsDigit(line[0]))
{
var point = ReadPointFromLine(line);
if (point.HasValue)
{
polygonVM.Locations.Add(new Location(point.Value.latitude, point.Value.longitute));
}
}
else
{
var keyValue = ReadAttributeFromLine(line);
if (keyValue.HasValue)
{
if (keyValue.Value.attributeKey.ToLower() == "name")
{
polygonVM.Title = keyValue.Value.attributeValue;
}
else if (keyValue.Value.attributeKey.ToLower() == "alias")
{
polygonVM.Alias = keyValue.Value.attributeValue;
}
}
}
}
}
polygon = polygonVM;
return(true);
}
catch (Exception e)
{
Debug.WriteLine(e);
polygon = null;
return(false);
}
}