/// <summary>
/// Method used to draw the rings at the desired interval
/// Rings are constructed as geodetic circles
/// </summary>
private IGeometry DrawRings()
{
double radius = 0.0;
try
{
IConstructGeodetic construct = null;
for (int x = 0; x < numberOfRings; x++)
{
// set the current radius
radius += Distance;
var polyLine = new Polyline() as IPolyline;
polyLine.SpatialReference = Point1.SpatialReference;
construct = polyLine as IConstructGeodetic;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), radius, esriCurveDensifyMethod.esriCurveDensifyByAngle, 0.001);
AddGraphicToMap(construct as IGeometry);
// Use negative radius to get the location for the distance label
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), -radius, esriCurveDensifyMethod.esriCurveDensifyByAngle, 0.001);
this.AddTextToMap(construct as IGeometry, String.Format("{0} {1}", radius.ToString(), dtVal.ToString()));
}
return(construct as IGeometry);
}
catch (Exception ex)
{
Console.WriteLine(ex);
return(null);
}
}
/// <summary>
/// Method used to draw the rings at the desired interval
/// Rings are constructed as geodetic circles
/// </summary>
private IGeometry DrawRings()
{
double radius = 0.0;
try
{
IConstructGeodetic construct = null;
for (int x = 0; x < numberOfRings; x++)
{
// set the current radius
radius += Distance;
var polyLine = new Polyline() as IPolyline;
polyLine.SpatialReference = Point1.SpatialReference;
const double DENSIFY_ANGLE_IN_DEGREES = 5.0;
construct = polyLine as IConstructGeodetic;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), radius,
esriCurveDensifyMethod.esriCurveDensifyByAngle, DENSIFY_ANGLE_IN_DEGREES);
var color = new RgbColorClass()
{
Red = 255
} as IColor;
IDictionary <String, System.Object> rrAttributes = new Dictionary <String, System.Object>();
rrAttributes.Add("rings", NumberOfRings);
rrAttributes.Add("distance", radius);
rrAttributes.Add("distanceunit", lineDistanceType.ToString());
rrAttributes.Add("radials", NumberOfRadials);
rrAttributes.Add("centerx", Point1.X);
rrAttributes.Add("centery", Point1.Y);
AddGraphicToMap(construct as IGeometry, color, attributes: rrAttributes);
// Use negative radius to get the location for the distance label
// TODO: someone explain why we need to construct this circle twice, and what -radius means (top of circle or something)?
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), -radius,
esriCurveDensifyMethod.esriCurveDensifyByAngle, DENSIFY_ANGLE_IN_DEGREES);
this.AddTextToMap(construct as IGeometry, String.Format("{0} {1}", radius.ToString(), dtVal.ToString()));
}
return(construct as IGeometry);
}
catch (Exception ex)
{
Console.WriteLine(ex);
return(null);
}
}
private IGeometry CreateRangeRings(double radius)
{
IConstructGeodetic construct = null;
var polyLine = (IPolyline) new Polyline();
polyLine.SpatialReference = Point1.SpatialReference;
const double DENSIFY_ANGLE_IN_DEGREES = 5.0;
construct = (IConstructGeodetic)polyLine;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), radius,
esriCurveDensifyMethod.esriCurveDensifyByAngle, DENSIFY_ANGLE_IN_DEGREES);
var color = (IColor) new RgbColorClass()
{
Red = 255
};
var displayValue = new EnumToFriendlyNameConverter();
var unitLabel = Convert.ToString(displayValue.Convert(lineDistanceType, typeof(string), new object(), CultureInfo.CurrentCulture));
IDictionary <String, System.Object> rrAttributes = new Dictionary <String, System.Object>();
rrAttributes.Add("rings", NumberOfRings);
rrAttributes.Add("distance", radius);
rrAttributes.Add("distanceunit", unitLabel);
rrAttributes.Add("centerx", Point1.X);
rrAttributes.Add("centery", Point1.Y);
AddGraphicToMap((IGeometry)construct, color, attributes: rrAttributes);
// Use negative radius to get the location for the distance label
// TODO: someone explain why we need to construct this circle twice, and what -radius means (top of circle or something)?
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), -radius,
esriCurveDensifyMethod.esriCurveDensifyByAngle, DENSIFY_ANGLE_IN_DEGREES);
this.AddTextToMap((IGeometry)construct, String.Format("{0} {1}", radius.ToString(), unitLabel));
return((IGeometry)construct);
}