ArcObjects Library Reference (Geometry)

IConstructCircularArc2.ConstructTangentRadiusChordEx Method

Constructs an arc with a common tangent to the input segment, a given radius and a chord length.

[Visual Basic .NET]
Public Sub ConstructTangentRadiusChordEx ( _
    ByVal Segment As ISegment, _
    ByVal atStart As Boolean, _
    ByVal isCCW As Boolean, _
    ByVal inRadius As Double, _
    ByVal chordDistance As Double, _
    ByVal IsMinor As Boolean _
)

[C#]
public void ConstructTangentRadiusChordEx (
    ISegment Segment,
    bool atStart,
    bool isCCW,
    double inRadius,
    double chordDistance,
    bool IsMinor
);

[C++]
HRESULT ConstructTangentRadiusChordEx(
  ISegment* Segment,
  VARIANT_BOOL atStart,
  VARIANT_BOOL isCCW,
  double inRadius,
  double chordDistance,
  VARIANT_BOOL IsMinor
);

[C++]

Parameters
Segment 

  Segment is a parameter of type ISegment*
atStart 

  atStart is a parameter of type bool
isCCW 

  isCCW is a parameter of type bool
inRadius 

  inRadius is a parameter of type double
chordDistance 

  chordDistance is a parameter of type double
IsMinor 

  IsMinor is a parameter of type bool

Product Availability

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

Remarks

Please see the ConstructTangentRadiusChord method for more details.

-isCCW stands for "is counter clockwise"

-If IsMinor is true the central angle of the output Arc will be smaller or equal than PI (Approx. 3.14 Rad)

[C#]

private void ConstructTangentRadiusChordEx()
{
  IConstructCircularArc2 constructCircularArc=new CircularArcClass();
  ICircularArc circularArc=constructCircularArc as ICircularArc;
  
  IPoint fromPoint=new PointClass();
  fromPoint.PutCoords(100, 100);
  IPoint toPoint=new PointClass();
  toPoint.PutCoords(50, 50);
  ILine line=new LineClass();
  line.PutCoords(fromPoint, toPoint);
  constructCircularArc.ConstructTangentRadiusChordEx(line as ISegment, true, true, 100, 50, true);
   
  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 ConstructTangentRadiusChordEx()
        Dim pConstructCircularArc As ESRI.ArcGIS.Geometry.IConstructCircularArc2
        Dim pCArc As ESRI.ArcGIS.Geometry.ICircularArc
        Dim pToPoint As ESRI.ArcGIS.Geometry.IPoint
        Dim pFromPoint As ESRI.ArcGIS.Geometry.IPoint
        Dim pLine1 As ESRI.ArcGIS.Geometry.ILine
        pConstructCircularArc=New ESRI.ArcGIS.Geometry.CircularArc
        pCArc=pConstructCircularArc
        pFromPoint=New ESRI.ArcGIS.Geometry.Point
        pToPoint=New ESRI.ArcGIS.Geometry.Point
        pLine1=New ESRI.ArcGIS.Geometry.Line
        pFromPoint.PutCoords(100, 100)
        pToPoint.PutCoords(100, 400)
        pLine1.PutCoords(pFromPoint, pToPoint)
        pConstructCircularArc.ConstructTangentRadiusChordEx(pLine1, False, True, 50, 100, True)
        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

IConstructCircularArc2.ConstructTangentRadiusChordEx Method

Product Availability

Remarks

See Also