/// <summary>
/// Create a geodetic line
/// </summary>
private IGeometry CreatePolyline()
{
try
{
if ((Point1 == null) || (Point2 == null))
{
return(null);
}
var construct = (IConstructGeodetic) new Polyline();
if (srf3 == null)
{
// if you don't use the activator, you will get exceptions
Type srType = Type.GetTypeFromProgID("esriGeometry.SpatialReferenceEnvironment");
srf3 = Activator.CreateInstance(srType) as ISpatialReferenceFactory3;
}
if (srf3 == null)
{
return(null);
}
esriGeodeticType type = GetEsriGeodeticType();
if (LineFromType == LineFromTypes.Points)
{
construct.ConstructGeodeticLineFromPoints(GetEsriGeodeticType(), Point1, Point2, GetLinearUnit(), esriCurveDensifyMethod.esriCurveDensifyByDeviation, -1.0);
}
else
{
Double bearing = 0.0;
if (LineAzimuthType == AzimuthTypes.Mils)
{
bearing = GetAzimuthAsDegrees();
}
else
{
bearing = (double)Azimuth;
}
construct.ConstructGeodeticLineFromDistance(type, Point1, GetLinearUnit(), Distance, bearing, esriCurveDensifyMethod.esriCurveDensifyByDeviation, -1.0);
}
if (LineFromType == LineFromTypes.Points)
{
UpdateDistance(construct as IGeometry);
UpdateAzimuth(construct as IGeometry);
}
IDictionary <String, System.Object> lineAttributes = new Dictionary <String, System.Object>();
lineAttributes.Add("distance", Distance);
lineAttributes.Add("distanceunit", LineDistanceType.ToString());
lineAttributes.Add("angle", (double)Azimuth);
lineAttributes.Add("angleunit", LineAzimuthType.ToString());
lineAttributes.Add("startx", Point1.X);
lineAttributes.Add("starty", Point1.Y);
lineAttributes.Add("endx", Point2.X);
lineAttributes.Add("endy", Point2.Y);
var color = new RgbColorClass()
{
Red = 255
} as IColor;
AddGraphicToMap(construct as IGeometry, color, attributes: lineAttributes);
if (HasPoint1 && HasPoint2)
{
if (Point1.SpatialReference != ArcMap.Document.FocusMap.SpatialReference)
{
Point1.Project(ArcMap.Document.FocusMap.SpatialReference);
}
//Get line distance type
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
//Get azimuth type
AzimuthTypes atVal = (AzimuthTypes)LineAzimuthType;
//Create text symbol using text and Point1
AddTextToMap(Point1, /* Use the start point for label */
string.Format("{0}:{3}{1} {2}{3}{4}:{3}{5} {6}",
"Distance",
Math.Round(Distance, 2).ToString("N2"),
dtVal.ToString(),
Environment.NewLine,
"Angle",
Math.Round(azimuth.Value, 2),
atVal.ToString()), (double)Azimuth, LineAzimuthType, false);
}
ResetPoints();
return(construct as IGeometry);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
return(null);
}
}