' 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.GlobeCore
Imports ESRI.ArcGIS.Analyst3D

Namespace GlobeGraphicsToolbar
  Public Class GeographicCoordinates
    Private _longitude As Double
    Private _latitude As Double
    Private _altitudeInKilometers As Double

    Public Sub New(ByVal globe As IGlobe, ByVal screenX As Integer, ByVal screenY As Integer)
      GetGeographicCoordinates(globe, screenX, screenY, _longitude, _latitude, _altitudeInKilometers)
    End Sub

    Private Sub GetGeographicCoordinates(ByVal globe As IGlobe, ByVal screenX As Integer, ByVal screenY As Integer, ByRef longitude As Double, ByRef latitude As Double, ByRef altitudeInKilometers As Double)
      Dim globeDisplay As IGlobeDisplay = globe.GlobeDisplay

      Dim sceneViewer As ISceneViewer = globeDisplay.ActiveViewer

      Dim camera As ICamera = globeDisplay.ActiveViewer.Camera

      Dim globeViewUtil As IGlobeViewUtil = TryCast(camera, IGlobeViewUtil)

      globeViewUtil.WindowToGeographic(globeDisplay, sceneViewer, screenX, screenY, True, longitude, latitude, altitudeInKilometers)
    End Sub

    Public ReadOnly Property Longitude() As Double
      Get
        Return _longitude
      End Get
    End Property

    Public ReadOnly Property Latitude() As Double
      Get
        Return _latitude
      End Get
    End Property

    Public ReadOnly Property AltitudeInKilometers() As Double
      Get
        Return _altitudeInKilometers
      End Get
    End Property
  End Class
End Namespace