Creating a toolbar of globe tools
PointGeometry.vb
' Copyright 2012 ESRI
' 
' All rights reserved under the copyright laws of the United States
' and applicable international laws, treaties, and conventions.
' 
' You may freely redistribute and use this sample code, with or
' without modification, provided you include the original copyright
' notice and use restrictions.
' 
' See the use restrictions.
' 

Imports Microsoft.VisualBasic
Imports System
Imports ESRI.ArcGIS.Geometry

Namespace GlobeGraphicsToolbar
  Public Class PointGeometry
    Private _geometry As IGeometry

    Public Sub New(ByVal longitude As Double, ByVal latitude As Double, ByVal altitudeInKilometers As Double, ByVal spatialReference As ISpatialReference)
      _geometry = GetGeometry(longitude, latitude, altitudeInKilometers, spatialReference)
    End Sub

    Private Function GetGeometry(ByVal longitude As Double, ByVal latitude As Double, ByVal altitudeInKilometers As Double, ByVal spatialReference As ISpatialReference) As IGeometry
      Dim geometry As IGeometry

      Dim point As IPoint = New PointClass()

      point.X = longitude
      point.Y = latitude
      point.Z = altitudeInKilometers

      point.SpatialReference = spatialReference

      geometry = TryCast(point, IGeometry)

      MakeZAware(geometry)

      Return geometry
    End Function

    Private Sub MakeZAware(ByVal geometry As IGeometry)
      Dim zAware As IZAware = TryCast(geometry, IZAware)
      zAware.ZAware = True
    End Sub

    Public ReadOnly Property Geometry() As IGeometry
      Get
        Return _geometry
      End Get
    End Property
  End Class
End Namespace