ArcObjects Library Reference (Geometry)  

IConstructCircularArc.ConstructBearingRadiusArc Method

Constructs an arc with the given chord bearing, radius and arc distance.

[Visual Basic .NET]
Public Sub ConstructBearingRadiusArc ( _
    ByVal from As IPoint, _
    ByVal inAngle As Double, _
    ByVal isCCW As Boolean, _
    ByVal inRadius As Double, _
    ByVal arcDistance As Double _
)
[C#]
public void ConstructBearingRadiusArc (
    IPoint from,
    double inAngle,
    bool isCCW,
    double inRadius,
    double arcDistance
);
[C++]
HRESULT ConstructBearingRadiusArc(
  IPoint* from,
  double inAngle,
  VARIANT_BOOL isCCW,
  double inRadius,
  double arcDistance
);
[C++]

Parameters

from

  from is a parameter of type IPoint

inAngle   inAngle is a parameter of type double isCCW   isCCW is a parameter of type VARIANT_BOOL inRadius   inRadius is a parameter of type double arcDistance   arcDistance is a parameter of type double

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

Constructs a CircularArc given the From Point, the Bearing Angle, the desired orientation, the desired Radius, and the desired CircularArc Length.  The Bearing Angle is measured in radians.  The Arc Distance should not be greater than 2 * Pi * Radius.

Remarks

-isCCW stands for "is counter clockwise"

ConstructCircularArc Bearing Angle Example

[C#]
private void ConstructBearingRadiusArc()
{
  IConstructCircularArc constructCircularArc = new CircularArcClass();
  ICircularArc circularArc = constructCircularArc as ICircularArc;
  
  IPoint fromPoint = new PointClass();
  fromPoint.PutCoords(100, 100);
 
  //The angles should be in Radians (Radians = Degrees * PI/180)
  constructCircularArc.ConstructBearingRadiusArc(fromPoint, 0, true, 40, 40);
   
  String report = "Length : " + circularArc.Length + "\n" +
                  "Radius : " + circularArc.Radius + "\n" +
                  "Chord Height : " + circularArc.ChordHeight + "\n" +
                  "Central Angle (Rad) : " + circularArc.CentralAngle + "\n" +
                  "From Angle (Rad) : " + circularArc.FromAngle + "\n" +
                  "To Angle (Rad) : " + circularArc.ToAngle + "\n" +
                  "Center Point : " + circularArc.CenterPoint.X + " , " + circularArc.CenterPoint.Y + "\n" +
                  "From Point : " + circularArc.FromPoint.X + " , " + circularArc.FromPoint.Y + "\n" +
                  "To Point : " + circularArc.ToPoint.X + " , " + circularArc.ToPoint.Y;
  System.Windows.Forms.MessageBox.Show(report);
}
[Visual Basic .NET]

    Private Sub ConstructBearingRadiusArc()
        Dim pConstructCircularArc As ESRI.ArcGIS.Geometry.IConstructCircularArc
        Dim pCArc As ESRI.ArcGIS.Geometry.ICircularArc
        Dim Pi As Double
        Dim pFromPoint As ESRI.ArcGIS.Geometry.IPoint
        pConstructCircularArc = New ESRI.ArcGIS.Geometry.CircularArc
        pCArc = pConstructCircularArc
        Pi = 4 * Math.Atan(1) 'Calculate the value of pi.
        pFromPoint = New ESRI.ArcGIS.Geometry.Point
        pFromPoint.PutCoords(100, 100)
        'The angles should be in Radians (Radians = Degrees * PI/180)
        pConstructCircularArc.ConstructBearingRadiusArc(pFromPoint, 0, True, 40, 40)
        Debug.Print("Length : " & pCArc.Length)
        Debug.Print("Radius : " & pCArc.Radius)
        Debug.Print("Chord Height : " & pCArc.ChordHeight)
        Debug.Print("Central Angle (Rad) : " & pCArc.CentralAngle)
        Debug.Print("From Angle (Rad) : " & pCArc.FromAngle)
        Debug.Print("To Angle (Rad) : " & pCArc.ToAngle)
        Debug.Print("Center Point : " & pCArc.CenterPoint.X & " , " & pCArc.CenterPoint.Y)
        Debug.Print("From Point : " & pCArc.FromPoint.X & " , " & pCArc.FromPoint.Y)
        Debug.Print("To Point : " & pCArc.ToPoint.X & " , " & pCArc.ToPoint.Y)
    End Sub

See Also

IConstructCircularArc Interface | IConstructCircularArc.ConstructBearingArcTangent Method | IConstructCircularArc.ConstructBearingAngleArc Method | IConstructCircularArc.ConstructBearingChordArc Method | IConstructCircularArc.ConstructBearingAngleTangent Method | IConstructCircularArc.ConstructBearingChordTangent Method | IConstructCircularArc.ConstructBearingRadiusArc Method | IConstructCircularArc.ConstructBearingRadiusAngle Method | IConstructCircularArc.ConstructBearingRadiusChord Method | IConstructCircularArc.ConstructBearingAngleChord Method | IConstructCircularArc.ConstructBearingRadiusTangent Method | IConstructAngle.ConstructThreePoint Method | IConstructAngle.ConstructLine Method