ArcObjects Library Reference (Geometry)  

IEnvelope.Offset Method

Moves the sides x units horizontally and y units vertically.

[Visual Basic .NET]
Public Sub Offset ( _
    ByVal X As Double, _
    ByVal Y As Double _
)
[C#]
public void Offset (
    double X,
    double Y
);
[C++]
HRESULT Offset(
  double X,
  double Y
);
[C++]

Parameters

X 
  X is a parameter of type double
Y 
  Y is a parameter of type double

Product Availability

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

Description

Offset moves the position of the Envelope.  A positive X value will shift the Envelope to the right and a negative value to the left. A positive Y value will shift the Envelope up and a negative value down.  The Width and Height of the Envelope remain unchanged.  Only the XMin, YMin, XMax, and YMax are changed.

Remarks

The new position of the Envelope is as follows:

new XMin= old XMin + X
new YMin = old YMin + Y
new XMax = old XMax + X
new YMax = old YMax + Y

Envelope Offset Example

[C#]

        private void SetOffset()
        {
            IEnvelope envelope = new EnvelopeClass();
            envelope.PutCoords(100, 100, 200, 200);

            String report1 = "Envelope before setting offset: \n" +
                             "LowerLeft  X = " + envelope.LowerLeft.X + "\n" +
                             "LowerLeft  Y = " + envelope.LowerLeft.Y + "\n\n" +
                             "LowerRight X =  " + envelope.LowerRight.X + "\n" +
                             "LowerRight Y =  " + envelope.LowerRight.Y + "\n\n" +
                             "UpperLeft  X = " + envelope.UpperLeft.X + "\n" +
                             "UpperLeft  Y = " + envelope.UpperLeft.Y + "\n\n" +
                             "UpperRight X =  " + envelope.UpperRight.X + "\n" +
                             "UpperRight Y =  " + envelope.UpperRight.Y;
            System.Windows.Forms.MessageBox.Show(report1);
            //offsets envelope by 10 units in the X direction and 20 in the Y direction.
            envelope.Offset(10, 20);
            String report2 = "Envelope after setting offset: \n" +
                             "LowerLeft  X = " + envelope.LowerLeft.X + "\n" +
                             "LowerLeft  Y = " + envelope.LowerLeft.Y + "\n\n" +
                             "LowerRight X =  " + envelope.LowerRight.X + "\n" +
                             "LowerRight Y =  " + envelope.LowerRight.Y + "\n\n" +
                             "UpperLeft  X = " + envelope.UpperLeft.X + "\n" +
                             "UpperLeft  Y = " + envelope.UpperLeft.Y + "\n\n" +
                             "UpperRight X =  " + envelope.UpperRight.X + "\n" +
                             "UpperRight Y =  " + envelope.UpperRight.Y;
            System.Windows.Forms.MessageBox.Show(report2);
        }

[Visual Basic .NET]

        Dim env As ESRI.ArcGIS.Geometry.IEnvelope
        env = New ESRI.ArcGIS.Geometry.Envelope
        env.PutCoords(100, 100, 200, 200)
        env.Offset(10, 20)

See Also

IEnvelope Interface | IEnvelope.Union Method | IEnvelope.Intersect Method | IEnvelope.Expand Method | IEnvelope.CenterAt Method