/// <summary>
/// Create a geodetic circle
/// </summary>
private IGeometry CreateCircle()
{
if (Point1 == null && Point2 == null)
{
return(null);
}
string unitLabel = "";
// This section including UpdateDistance serves to handle Diameter appropriately
var polyLine = (IPolyline) new Polyline();
polyLine.SpatialReference = Point1.SpatialReference;
var ptCol = (IPointCollection)polyLine;
ptCol.AddPoint(Point1);
ptCol.AddPoint(Point2);
UpdateDistance(polyLine as IGeometry);
try
{
var construct = (IConstructGeodetic) new Polyline();
if (construct != null)
{
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), Distance, esriCurveDensifyMethod.esriCurveDensifyByAngle, 0.01);
IDictionary <String, System.Object> circleAttributes = new Dictionary <String, System.Object>();
double radiusOrDiameterDistance = 0.0;
if (CircleType == CircleFromTypes.Diameter)
{
radiusOrDiameterDistance = Distance * 2;
}
else
{
radiusOrDiameterDistance = Distance;
}
//Construct a polygon from geodesic polyline
var newPoly = PolylineToPolygon((IPolyline)construct);
if (newPoly != null)
{
//Get centroid of polygon
var area = (IArea)newPoly;
int roundingFactor = 0;
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
// If Distance Calculator is in use, use the unit from the Rate combobox
// to label the circle
if (IsDistanceCalcExpanded)
{
// Select appropriate label and number of decimal places
switch (RateUnit)
{
case DistanceTypes.Feet:
case DistanceTypes.Meters:
case DistanceTypes.Yards:
unitLabel = RateUnit.ToString();
roundingFactor = 0;
break;
case DistanceTypes.Miles:
case DistanceTypes.Kilometers:
unitLabel = RateUnit.ToString();
roundingFactor = 2;
break;
case DistanceTypes.NauticalMiles:
var displayValue = new EnumToFriendlyNameConverter();
unitLabel = Convert.ToString(displayValue.Convert(RateUnit, typeof(string), new object(), CultureInfo.CurrentCulture));
roundingFactor = 2;
break;
default:
break;
}
}
// Else Distance Calculator not in use, use the unit from the Radius / Diameter combobox
// to label the circle
else
{
// Select appropriate number of decimal places
switch (LineDistanceType)
{
case DistanceTypes.Feet:
case DistanceTypes.Meters:
case DistanceTypes.Yards:
unitLabel = RateUnit.ToString();
roundingFactor = 0;
break;
case DistanceTypes.Miles:
case DistanceTypes.Kilometers:
unitLabel = RateUnit.ToString();
roundingFactor = 2;
break;
case DistanceTypes.NauticalMiles:
unitLabel = RateUnit.ToString();
roundingFactor = 2;
break;
default:
break;
}
var displayValue = new EnumToFriendlyNameConverter();
unitLabel = Convert.ToString(displayValue.Convert(dtVal, typeof(string), new object(), CultureInfo.CurrentCulture));
}
string circleTypeLabel = circleType.ToString();
string distanceLabel = "";
// Use the unit from Rate combobox if Distance Calculator is expanded
if (IsDistanceCalcExpanded)
{
radiusOrDiameterDistance = ConvertFromTo(LineDistanceType, RateUnit, radiusOrDiameterDistance);
distanceLabel = (TrimPrecision(radiusOrDiameterDistance, RateUnit, true)).ToString("N" + roundingFactor.ToString());
}
else
{
distanceLabel = (TrimPrecision(radiusOrDiameterDistance, LineDistanceType, false)).ToString("N" + roundingFactor.ToString());
}
//Add text using centroid point
this.AddTextToMap(area.LabelPoint, string.Format("{0}:{1} {2}",
circleTypeLabel,
distanceLabel,
StringParser.GetStringValue(dtVal)));
}
double radiusDistance = radiusOrDiameterDistance;
if (CircleType == CircleFromTypes.Diameter)
{
radiusDistance = radiusOrDiameterDistance / 2;
}
circleAttributes.Add("radius", radiusDistance);
circleAttributes.Add("disttype", CircleType.ToString());
circleAttributes.Add("centerx", Point1.X);
circleAttributes.Add("centery", Point1.Y);
if (IsDistanceCalcExpanded)
{
circleAttributes.Add("distanceunit", unitLabel.ToString());
}
else
{
circleAttributes.Add("distanceunit", unitLabel.ToString());
}
var color = new RgbColorClass()
{
Red = 255
} as IColor;
this.AddGraphicToMap(construct as IGeometry, color, attributes: circleAttributes);
Point2 = null;
HasPoint2 = false;
ResetFeedback();
}
return(construct as IGeometry);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
/// <summary>
/// Create a geodetic circle
/// </summary>
private IGeometry CreateCircle()
{
if (Point1 == null && Point2 == null)
{
return(null);
}
// This section including UpdateDistance serves to handle Diameter appropriately
var polyLine = new Polyline() as IPolyline;
polyLine.SpatialReference = Point1.SpatialReference;
var ptCol = polyLine as IPointCollection;
ptCol.AddPoint(Point1);
ptCol.AddPoint(Point2);
UpdateDistance(polyLine as IGeometry);
try
{
var construct = new Polyline() as IConstructGeodetic;
if (construct != null)
{
construct.ConstructGeodesicCircle(Point1, GetLinearUnit(), Distance, esriCurveDensifyMethod.esriCurveDensifyByAngle, 0.01);
IDictionary <String, System.Object> circleAttributes = new Dictionary <String, System.Object>();
double dist = 0.0;
if (CircleType == CircleFromTypes.Diameter)
{
dist = Distance * 2;
}
else
{
dist = Distance;
}
//circleAttributes.Add("radius", dist);
//circleAttributes.Add("disttype", CircleType.ToString());
//circleAttributes.Add("centerx", Point1.X);
//circleAttributes.Add("centery", Point1.Y);
//circleAttributes.Add("distanceunit", LineDistanceType.ToString());
//var color = new RgbColorClass() { Red = 255 } as IColor;
//this.AddGraphicToMap(construct as IGeometry, color, attributes: circleAttributes);
//Construct a polygon from geodesic polyline
var newPoly = this.PolylineToPolygon((IPolyline)construct);
if (newPoly != null)
{
//Get centroid of polygon
var area = newPoly as IArea;
string unitLabel = "";
int roundingFactor = 0;
// If Distance Calculator is in use, use the unit from the Rate combobox
// to label the circle
if (IsDistanceCalcExpanded)
{
// Select appropriate label and number of decimal places
switch (RateUnit)
{
case DistanceTypes.Feet:
case DistanceTypes.Meters:
case DistanceTypes.Yards:
unitLabel = RateUnit.ToString();
roundingFactor = 0;
break;
case DistanceTypes.Miles:
case DistanceTypes.Kilometers:
unitLabel = RateUnit.ToString();
roundingFactor = 2;
break;
case DistanceTypes.NauticalMile:
unitLabel = "Nautical Miles";
roundingFactor = 2;
break;
default:
break;
}
}
// Else Distance Calculator not in use, use the unit from the Radius / Diameter combobox
// to label the circle
else
{
// Select appropriate number of decimal places
switch (LineDistanceType)
{
case DistanceTypes.Feet:
case DistanceTypes.Meters:
case DistanceTypes.Yards:
unitLabel = RateUnit.ToString();
roundingFactor = 0;
break;
case DistanceTypes.Miles:
case DistanceTypes.Kilometers:
unitLabel = RateUnit.ToString();
roundingFactor = 2;
break;
case DistanceTypes.NauticalMile:
unitLabel = "Nautical Miles";
roundingFactor = 2;
break;
default:
break;
}
DistanceTypes dtVal = (DistanceTypes)LineDistanceType;
unitLabel = dtVal.ToString();
}
double convertedDistance = Distance;
// Distance is storing radius not diameter, so we have to double it to get the correct value
// for the label
// Only use Diameter when Distance Calculator is not in use
if (!IsDistanceCalcExpanded && circleType == CircleFromTypes.Diameter)
{
convertedDistance *= 2;
}
string circleTypeLabel = circleType.ToString();
string distanceLabel = "";
// Use the unit from Rate combobox if Distance Calculator is expanded
if (IsDistanceCalcExpanded)
{
convertedDistance = ConvertFromTo(LineDistanceType, RateUnit, convertedDistance);
distanceLabel = (TrimPrecision(convertedDistance, RateUnit, true)).ToString("N" + roundingFactor.ToString());
// Always label with radius when Distance Calculator is expanded
circleTypeLabel = "Radius";
}
else
{
distanceLabel = (TrimPrecision(convertedDistance, LineDistanceType, false)).ToString("N" + roundingFactor.ToString());
}
dist = convertedDistance;
//Add text using centroid point
this.AddTextToMap(area.Centroid, string.Format("{0}:{1} {2}",
circleTypeLabel,
distanceLabel,
unitLabel));
}
circleAttributes.Add("radius", dist);
circleAttributes.Add("disttype", CircleType.ToString());
circleAttributes.Add("centerx", Point1.X);
circleAttributes.Add("centery", Point1.Y);
if (IsDistanceCalcExpanded)
{
circleAttributes.Add("distanceunit", RateUnit.ToString());
}
else
{
circleAttributes.Add("distanceunit", LineDistanceType.ToString());
}
var color = new RgbColorClass()
{
Red = 255
} as IColor;
this.AddGraphicToMap(construct as IGeometry, color, attributes: circleAttributes);
Point2 = null;
HasPoint2 = false;
ResetFeedback();
}
return(construct as IGeometry);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(null);
}
}