ArcObjects Library Reference (Geometry)

IConstructCircularArc.ConstructBearingAngleChord Method

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

[Visual Basic .NET]
Public Sub ConstructBearingAngleChord ( _
    ByVal from As IPoint, _
    ByVal inAngle As Double, _
    ByVal isCCW As Boolean, _
    ByVal CentralAngle As Double, _
    ByVal chordDistance As Double _
)

[C#]
public void ConstructBearingAngleChord (
    IPoint from,
    double inAngle,
    bool isCCW,
    double CentralAngle,
    double chordDistance
);

[C++]
HRESULT ConstructBearingAngleChord(
  IPoint* from,
  double inAngle,
  VARIANT_BOOL isCCW,
  double CentralAngle,
  double chordDistance
);

[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
CentralAngle 
  CentralAngle is a parameter of type double
chordDistance 
  chordDistance 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 Central Angle, and the desired Chord Distance. The Bearing Angle and Central Angle are measured in radians.

Remarks

-isCCW stands for "is counter clockwise"

ConstructCircularArc Bearing Angle Example

[C#]

private void ConstructBearingAngleChord()
{
  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.ConstructBearingAngleChord(fromPoint, 0, true, (90 * (Math.PI / 180)), 150);
   
  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 ConstructBearingAngleChord()
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.ConstructBearingAngleChord(pFromPoint, 0, True, (90 * (Pi / 180)), 100)

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

IConstructCircularArc.ConstructBearingAngleChord Method

Product Availability

Description

Remarks

See Also