Moves this envelope so it is centered at p.
[Visual Basic .NET] Public Sub CenterAt ( _ ByVal p As IPoint _ )
[C#] public void CenterAt ( IPoint p );
[C++]
HRESULT CenterAt(
IPoint* p
);
[C++]Parameters
pp is a parameter of type IPoint
Product Availability
Description
Moves the Envelope so that the center point of the Envelope is at the given input point. The Width, Height, and other properties of the Envelope remain unchanged (only the XMin, XMax, YMin, and YMax are altered).
Remarks
The Center Point occurs at: ((XMin + XMax) / 2, (YMin + YMax) / 2).
private void ReCenterEnvelope()
{
IEnvelope envelope = new EnvelopeClass();
envelope.PutCoords(100, 100, 200, 200);
String report1 = "Envelope: \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);
//re-center
IPoint centerPoint = new PointClass();
centerPoint.PutCoords(0, 0);
envelope.CenterAt(centerPoint);
String report2 = "Re-cetered Envelope: \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);
}
Public Sub t_EnvCenterAt()
Dim pEnv1 As IEnvelope
Dim pPoint As IPoint
pEnv1 = New Envelope
pPoint = New Point
pEnv1.PutCoords(100, 100, 200, 200)
pPoint.PutCoords(0, 0)
pEnv1.CenterAt(pPoint)
Dim dXmin As Double, dYmin As Double, dXmax As Double, dYmax As Double
pEnv1.QueryCoords(dXmin, dYmin, dXmax, dYmax)
If pEnv1.IsEmpty Then
MsgBox("envelope is empty")
Else
MsgBox(dXmin & "," & dYmin & "," & dXmax & "," & dYmax)
End If
End Sub
See Also
IEnvelope Interface | IEnvelope.Union Method | IEnvelope.Intersect Method | IEnvelope.Expand Method | IEnvelope.Offset Method