' Copyright 2010 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.
' 


Public Class LocateCoordinates

    Private m_pAOInitialize As ESRI.ArcGIS.esriSystem.IAoInitialize

    Public Sub New()

        ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.Engine)
        ' This call is required by the Windows Form Designer.
        InitializeComponent()

        'Get License for controls
        m_pAOInitialize = New ESRI.ArcGIS.esriSystem.AoInitialize
        Dim status As ESRI.ArcGIS.esriSystem.esriLicenseStatus

        status = m_pAOInitialize.IsProductCodeAvailable(ESRI.ArcGIS.esriSystem.esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB)
        If (status <> ESRI.ArcGIS.esriSystem.esriLicenseStatus.esriLicenseAvailable) Then
            MsgBox("ERROR: license not available." & vbCrLf & status)
            Me.Finalize()
        Else
            status = m_pAOInitialize.Initialize(ESRI.ArcGIS.esriSystem.esriLicenseProductCode.esriLicenseProductCodeEngineGeoDB)
        End If

        'Add the world continents layer to the map for reference
        MapControl1.AddLayerFromFile(GetSdkDataPath() + "World\Continents.lyr")

    End Sub

    Private Sub MapControl1_OnMouseDown(ByVal sender As System.Object, ByVal e As ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent) Handles MapControl1.OnMouseDown
        'clears existing point
        MapControl1.Refresh()
    End Sub

    Private Sub MapControl1_OnMouseUp(ByVal sender As Object, ByVal e As ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseUpEvent) Handles MapControl1.OnMouseUp
        Call ConvertCoords(e.mapX, e.mapY)
        Call DrawPoint(e.mapX, e.mapY)
    End Sub

    Private Sub DrawPoint(ByVal mapX, ByVal mapY)
        On Error GoTo EH
        Dim pSymbol As ESRI.ArcGIS.Display.IMarkerSymbol
        Dim pRGB As ESRI.ArcGIS.Display.IRgbColor
        Dim pPoint As ESRI.ArcGIS.Geometry.IPoint

        'Create a point geometry for the markersymbol
        pPoint = New ESRI.ArcGIS.Geometry.Point
        pPoint.x = mapX
        pPoint.y = mapY

        'Create a color for the markersymbol
        pRGB = New ESRI.ArcGIS.Display.RgbColor
        With pRGB
            .Red = 0
            .Blue = 0
            .Green = 0
        End With

        'Create the markersymbol
        pSymbol = New ESRI.ArcGIS.Display.SimpleMarkerSymbol
        With pSymbol
            .Color = pRGB
            .Size = 10
        End With

        'Add the markersymbol to the map at the clicked location
        MapControl1.DrawShape(pPoint, pSymbol)

        Exit Sub
EH:
        MsgBox(Err.Number & "  " & Err.Description, vbCritical, "Error")

    End Sub

    Private Sub ConvertCoords(ByVal mapX, ByVal mapY)
        On Error GoTo EH
        Dim pCoordTool As ESRI.ArcGIS.DefenseSolutions.ICoordinateTool
        Dim vValue As ESRI.ArcGIS.Geometry.IPoint
        Dim iFormat As Integer
        Dim vFromDatum As Object
        Dim vToDatum As Object
        Dim pWGSPoint As ESRI.ArcGIS.Geometry.IPoint
        Dim pOutPoint As ESRI.ArcGIS.Geometry.IPoint
        Dim sDMS As String : sDMS = ""
        Dim sUTM As String : sUTM = ""
        Dim sMGRS As String : sMGRS = ""

        'Set the parameters to be used in the conversion.
        'The parameters are as follows:
        'vValue: The input coordinates
        'iFormat: The format of the input coordinates, where 1 = IPoint (decimal degrees)
        '                            2 = DMS
        '                            3 = UTM
        '                            4 = MGRS
        'vFromDatum: The datum of the input coordinates
        'vToDatum: The datum of the output coordinates
        'pWGSPoint: The output point with x/y coordinates in WGS1984 datum
        'pOutPoint: The output point with x/y coordinates in the output datum
        'sDMS: The output DMS coordinates
        'sUTM: The output UTM coordinates
        'sMGRS: The output MGRS coordinates
        vValue = New ESRI.ArcGIS.Geometry.Point
        vValue.PutCoords(mapX, mapY)
        iFormat = 1
        vFromDatum = 0 ' => "WGS 1984 (WGS84)"
        vToDatum = 0   ' => "WGS 1984 (WGS84)"
        pWGSPoint = New ESRI.ArcGIS.Geometry.Point
        pOutPoint = New ESRI.ArcGIS.Geometry.Point

        pCoordTool = New ESRI.ArcGIS.DefenseSolutions.CoordinateTool
        pCoordTool.ConvertLocation(vValue, iFormat, vFromDatum, vToDatum, _
                                    pWGSPoint, pOutPoint, sDMS, sUTM, sMGRS)

        'Populate the coordinate text boxes with the coordinates calculated
        'by the ConvertLocation method.
        txtX.Text = CStr(pOutPoint.x)
        txtY.Text = CStr(pOutPoint.y)
        txtDMS.Text = sDMS
        txtUTM.Text = sUTM
        txtMGRS.Text = sMGRS

        Exit Sub
EH:
        MsgBox(Err.Number & "  " & Err.Description, vbCritical, "Error")

    End Sub

    Private Function GetSdkDataPath() As String
        'get the ArcGIS path from the registry
        Dim key As Microsoft.Win32.RegistryKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("SOFTWARE\ESRI\ArcGIS_SXS_SDK")
        Dim path As String = Convert.ToString(key.GetValue("InstallDir"))

        'set the of the logo
        Dim str As String = System.IO.Path.Combine(path, "Samples\data\")
        If (Not System.IO.Directory.Exists(str)) Then
            MessageBox.Show("Path :" & str & " does not exist!")
            Return String.Empty
        End If

        Return str
    End Function

End Class