CenterAt Method (IGeometryEngine)

In This Topic

Center the envelope at the specified X and Y coordinates.

Syntax

C#
Visual Basic (Declaration)

Envelope CenterAt( 
   Envelope envelope,
   double x,
   double y
)

Function CenterAt( _
   ByVal envelope As Envelope, _
   ByVal x As Double, _
   ByVal y As Double _
) As Envelope

Parameters

envelope: The envelope to center.
x: X-coordinate of the center.
y: Y-coordinate of the center.

Return Value

The envelope centered at the X and Y coordinates.

Exceptions

Exception	Description
System.ArgumentNullException	Envelope is null or empty.

Example

Center an envelope around X,Y

Envelope env = EnvelopeBuilderEx.CreateEnvelope(1.0, 1.0, 5.0, 5.0);
Envelope centered = GeometryEngine.Instance.CenterAt(env, 2.0, 2.0);

// centered.Center.X = 2.0
// centered.Center.Y = 2.0
// centered.XMin = 0
// centered.YMin = 0
// centered.XMax = 4
// centered.YMax = 4

centered = env.CenterAt(4.0, 3.0);
// centered.Center.X == 4.0
// centered.Center.Y == 3.0
// centered.XMin == 2.0
// centered.YMin == 1.0
// centered.XMax == 6.0
// centered.YMax == 5.0

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

IGeometryEngine Interface
IGeometryEngine Members

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