Imports System.Runtime.InteropServices
Imports System.Text
Imports System.Math
Imports System.IO
Imports System.Globalization
Imports TestEIn.EgtInterface
Imports TestEIn.GenInterface
Imports TestEIn.Controller


Public Class Form1

   Private m_sDataRoot As String = String.Empty
   Private m_sIniFile As String = String.Empty
   Private WithEvents m_Controller As New Controller
   Private m_bShowGrid As Boolean
   Private m_bShowGridFrame As Boolean
   Private m_bCPlaneTypePos As Boolean

   Public Function GetExeRoot() As String
      Return Application.StartupPath
   End Function
   Public Function GetDataRoot() As String
      Return m_sDataRoot
   End Function

'-------------------------------- Form ------------------------------------------------------------
   Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
      ' installo aggiornamento interfaccia
      AddHandler System.Windows.Forms.Application.Idle, AddressOf Application_Idle
      ' Title
      EmitTitle()
      ' Impostazione path radice per i dati
      m_sDataRoot = Application.StartupPath
      If GetPrivateProfileString("Data", "DataRoot", "", m_sDataRoot, m_sDataRoot & "\DataRoot.Ini") = 0 Then
         m_sDataRoot = Application.StartupPath
      End If
      ' Impostazione path Ini file
      m_sIniFile = m_sDataRoot & "\TestEIn.ini"
      ' Inizializzazione generale di EgtInterface
      EgtInit(0, m_sDataRoot & "\TestEngine.log")
      ' imposto chiave di protezione
      Dim sKey As String = String.Empty
      GetPrivateProfileString("General", "Key", "", sKey, m_sIniFile)
      EgtSetKey(sKey)
      ' imposto dir font Nfe e font default
      Dim sNfeDir As String = String.Empty
      GetPrivateProfileString("GeomDB", "NfeFontDir", "", sNfeDir, m_sIniFile)
      Dim sDefFont As String = String.Empty
      GetPrivateProfileString("GeomDB", "DefaultFont", "", sDefFont, m_sIniFile)
      EgtSetFont(sNfeDir, sDefFont)
      ' imposto direttorio di default per libreria Lua
      Dim sLuaLibsDir As String = String.Empty
      GetPrivateProfileString("Lua", "LibsDir", "", sLuaLibsDir, m_sIniFile)
      EgtSetLuaLibs(sLuaLibsDir)
      ' imposto colore di default
      Dim DefColor As New Color3d(0, 0, 0)
      GetPrivateProfileColor("GeomDB", "DefaultColor", DefColor, m_sIniFile)
      Scene1.SetDefaultMaterial(DefColor)
      ' imposto colori sfondo
      Dim BackTopColor As New Color3d(192, 192, 192)
      GetPrivateProfileColor("Scene", "BackTop", BackTopColor, m_sIniFile)
      Dim BackBotColor As New Color3d(192, 192, 192)
      GetPrivateProfileColor("Scene", "BackBottom", BackBotColor, m_sIniFile)
      Scene1.SetViewBackground(BackTopColor, BackBotColor)
      ' imposto colore di evidenziazione
      Dim MarkColor As New Color3d(255, 255, 0)
      GetPrivateProfileColor("Scene", "Mark", MarkColor, m_sIniFile)
      Scene1.SetMarkMaterial(MarkColor)
      ' imposto colore per superfici selezionate
      Dim SelSurfColor As New Color3d(255, 255, 192)
      GetPrivateProfileColor("Scene", "SelSurf", SelSurfColor, m_sIniFile)
      Scene1.SetSelSurfMaterial(SelSurfColor)
      ' imposto tipo e colore del rettangolo di zoom
      Dim bOutline As Boolean = True
      Dim ZwColor As New Color3d(0, 0, 0)
      GetPrivateProfileZoomWin("Scene", "ZoomWin", bOutline, ZwColor, m_sIniFile)
      Scene1.SetZoomWinAttribs(bOutline, ZwColor)
      ' imposto colore della linea di distanza
      Dim DstLnColor As New Color3d(255, 0, 0)
      GetPrivateProfileColor("Scene", "DistLine", DstLnColor, m_sIniFile)
      Scene1.SetDistLineMaterial(DstLnColor)
      ' imposto parametri OpenGL
      Dim nDriver As Integer = GetPrivateProfileInt("OpenGL", "Driver", 3, m_sIniFile)
      Dim b2Buff As Boolean = (GetPrivateProfileInt("OpenGL", "DoubleBuffer", 1, m_sIniFile) <> 0)
      Dim nColorBits As Integer = GetPrivateProfileInt("OpenGL", "ColorBits", 32, m_sIniFile)
      Dim nDepthBits As Integer = GetPrivateProfileInt("OpenGL", "DepthBits", 32, m_sIniFile)
      Scene1.SetViewAttributes(nDriver, b2Buff, nColorBits, nDepthBits)
      ' inizializzo scena
      Scene1.Init()
      ' imposto visualizzazione riferimento globale
      Dim bShowGlobFrame As Boolean = (GetPrivateProfileInt("Scene", "ShowGFrame", 1, m_sIniFile) <> 0)
      EgtSetGlobFrameShow(bShowGlobFrame)
      ' imposto i dati della griglia
      m_bShowGrid = (GetPrivateProfileInt("Grid", "ShowGrid", 1, m_sIniFile) <> 0)
      m_bShowGridFrame = (GetPrivateProfileInt("Grid", "ShowFrame", 1, m_sIniFile) <> 0)
      Dim dSnapStep As Double = GetPrivateProfileDouble("Grid", "SnapStep", 10, m_sIniFile)
      Dim nMinLineSStep As Integer = GetPrivateProfileInt("Grid", "MinLineSStep", 1, m_sIniFile)
      Dim nMajLineSStep As Integer = GetPrivateProfileInt("Grid", "MajLineSStep", 10, m_sIniFile)
      Dim nExtSStep As Integer = GetPrivateProfileInt("Grid", "ExtSStep", 50, m_sIniFile)
      Dim MinLnColor As New Color3d(160, 160, 160)
      GetPrivateProfileColor("Grid", "MinLnColor", MinLnColor, m_sIniFile)
      Dim MajLnColor As New Color3d(160, 160, 160)
      GetPrivateProfileColor("Grid", "MajLnColor", MajLnColor, m_sIniFile)
      EgtSetGridShow(m_bShowGrid, m_bShowGridFrame)
      EgtSetGridFrame(Frame3d.GLOB)
      EgtSetGridGeo(dSnapStep, nMinLineSStep, nMajLineSStep, nExtSStep)
      EgtSetGridColor(MinLnColor, MajLnColor)
      ' imposto tipo coordinate
      m_bCPlaneTypePos = True
      Scene1.SetGridCursorPos(m_bCPlaneTypePos)
      ' modo di visualizzazione
      Dim nShowMode As Integer = GetPrivateProfileInt("Scene", "ShowMode", SM.SHADING, m_sIniFile)
      If nShowMode = SM.WIREFRAME Then
         rbtWireFrame.Checked = True
      ElseIf nShowMode = SM.HIDDENLINE Then
         rbtHiddenLine.Checked = True
      Else
         rbtShading.Checked = True
      End If
      ' visualizzazione direzione curve
      Dim nShowCurveDir As Integer = GetPrivateProfileInt("Scene", "CurveDir", 0, m_sIniFile)
      chkCurveDir.Checked = (nShowCurveDir <> 0)
      ' ObjTree non selezionato
      m_nObjTreeOldId = GDB_ID.NULL
      ' nascondo input box
      ResetInputBox()
      ' aggiungo voce per about box nel menù di sistema
      Dim hSysMenu As IntPtr = GetSystemMenu(Handle, False)
      If hSysMenu <> IntPtr.Zero Then
         AppendMenu(hSysMenu, MF_SEPARATOR, 0, "")
         AppendMenu(hSysMenu, MF_STRING, IDM_ABOUTBOX, "About TestEIn...")
      End If
      ' Nascondo TabTest
      TabControl2.TabPages.Remove(TabTest)
      ' Posizione e dimensioni del Form
      If ModifierKeys <> Keys.Shift Then
         Dim nFlag As Integer
         Dim nLeft As Integer
         Dim nTop As Integer
         Dim nWidth As Integer
         Dim nHeight As Integer
         GetPrivateProfileWinPos("General", "WinPlace", nFlag, nLeft, nTop, nWidth, nHeight, m_sIniFile)
         Me.StartPosition = System.Windows.Forms.FormStartPosition.Manual
         Me.Location = New Point(nLeft, nTop)
         Me.Size = New Size(nWidth, nHeight)
         WindowState = IIf(nFlag = 1, FormWindowState.Maximized, FormWindowState.Normal)
      End If
      ' Impostazioni controller
      m_Controller.SetScene(Scene1)
      ' Apro progetto vuoto
      Scene1.NewProject(True)
   End Sub

   Private Sub Form1_Shown(sender As System.Object, e As EventArgs) Handles MyBase.Shown
      FormTimer.Start()
   End Sub

   Private Sub FormTickEvent(source As Object, e As EventArgs) Handles FormTimer.Tick
      FormTimer.Stop()
      ' Recupero eventuali parametri da linea di comando
      Dim bOpen As Boolean = False
      For Each s As String In My.Application.CommandLineArgs
         If Not String.IsNullOrWhiteSpace(s) Then
            Dim nFileType As Integer = EgtGetFileType(s)
            Select Case nFileType
            Case FT.NGE, FT.NFE
               Scene1.OpenProject(s, False)
               bOpen = True
            Case FT.DXF, FT.STL, FT.CNC
               Scene1.ImportProject(s, False)
               bOpen = True
            Case FT.TSC, FT.LUA
               Scene1.Exec(s, False)
               bOpen = True
            End Select
            Exit For
         End If
      Next
   End Sub

   Private Sub Form1_FormClosing(sender As System.Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
      ' gestisco eventuale file corrente modificato
      If Not m_Controller.ManageModified() Then
         e.Cancel = True
         Return
      End If
      ' Salvo modo di visualizzazione
      WritePrivateProfileString("Scene", "ShowMode", EgtGetShowMode(), m_sIniFile)
      ' Salvo stato visualizzazione direzione curve
      WritePrivateProfileString("Scene", "CurveDir", IIf(EgtGetShowCurveDirection(), 1, 0), m_sIniFile)
      ' Salvo posizione Form
      Dim nFlag As Integer = IIf(Me.WindowState = FormWindowState.Maximized, 1, 0)
      WritePrivateProfileWinPos("General", "WinPlace", nFlag, Me.Left, Me.Top, Me.Width, Me.Height, m_sIniFile)
      ' Terminazione generale di EgtInterface
      EgtExit()
      ' Disabilito gestore Idle
      RemoveHandler Application.Idle, AddressOf Application_Idle
   End Sub

   Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
      MyBase.WndProc(m)
      If m.Msg = WM_SYSCOMMAND Then
         If m.WParam.ToInt32 = IDM_ABOUTBOX Then
            AboutBox1.ShowDialog()
         End If
      End If
   End Sub

 '-------------------------------- Events management ----------------------------------------------
   Private Sub OnCursorPos(ByVal sender As Object, ByVal sCursorPos As String) Handles Scene1.OnCursorPos
      tsStatusCursorPos.Text = sCursorPos
   End Sub

   Private Sub OnMouseSelectedObj(ByVal sender As Object, ByVal nId As Integer, ByVal bLast As Boolean) Handles Scene1.OnMouseSelectedObj
      m_Controller.MouseSelectedObj(nId, bLast)
   End Sub

   Private Sub OnMouseSelectedPart(ByVal sender As Object, ByVal nId As Integer) Handles Scene1.OnMouseSelectedPart
      m_Controller.MouseSelectedPart(nId)
   End Sub

   Private Sub OnMouseSelectedLayer(ByVal sender As Object, ByVal nId As Integer) Handles Scene1.OnMouseSelectedLayer
      m_Controller.MouseSelectedLayer(nId)
   End Sub

   Private Sub OnMousePointFromSelection(ByVal sender As Object, ByVal PtP As Point3d) Handles Scene1.OnMousePointFromSelection
      m_Controller.SetLastPoint3d(PtP)
   End Sub

   Private Sub OnMouseDone(ByVal sender As Object) Handles Scene1.OnMouseDone
      m_Controller.Done(InputText.Text)
   End Sub

   Private Sub OnMouseSelectedPoint(ByVal sender As Object, ByVal PtP As Point3d, ByVal nSep As SEP, ByVal nId As Integer) Handles Scene1.OnMouseSelectedPoint
      Dim bDone As Boolean = (ModifierKeys And Keys.Control) <> Keys.Control
      m_Controller.MouseSelectedPoint(PtP, nSep, nId, bDone)
   End Sub

   Private Sub OnMouseSelectedDir(ByVal sender As Object, ByVal VtDir As Vector3d) Handles Scene1.OnMouseSelectedDir
      m_Controller.SetLastVector3d(VtDir)
   End Sub

   Private Sub OnMouseMoveSelPoint(ByVal sender As Object, ByVal PtP As Point3d) Handles Scene1.OnMouseMoveSelPoint
      m_Controller.MouseMoveInSelectionPoint(PtP)
   End Sub

   Private Sub OnMouseAnalyzed(ByVal sender As Object, ByVal nId As Integer) Handles Scene1.OnMouseAnalyzed
      UpdateObjInObjTree(nId)
      SelectIdInObjTree(nId)
   End Sub

   Private Sub OnShowDistance(ByVal sender As Object, ByVal sDistance As String) Handles Scene1.OnShowDistance
      tsStatusOutput.Text = sDistance
   End Sub

   Private Sub OnNewProject(ByVal sender As Object, ByVal bOk As Boolean) Handles Scene1.OnNewProject
      m_Controller.ResetCurrFile()
      m_Controller.ExecuteCommand(CMD.RESETCURRPARTLAYER)
      m_Controller.ResetModified()
      If Not bOk Then
         MessageBox.Show("Error on new file", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnOpeningProject(ByVal sender As Object) Handles Scene1.OnOpeningProject
      ClearObjTree()
   End Sub

   Private Sub OnOpenProject(ByVal sender As Object, ByVal sFile As String, ByVal bOk As Boolean) Handles Scene1.OnOpenProject
      m_Controller.SetCurrFile(sFile)
      m_Controller.ExecuteCommand(CMD.RESETCURRPARTLAYER)
      m_Controller.ResetModified()
      WritePrivateProfileString("General", "LastNgeDir", Path.GetDirectoryName(sFile), m_sIniFile)
      If Not bOk Then
         MessageBox.Show("Error opening file", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnSavingProject(ByVal sender As Object, ByVal sFile As String) Handles Scene1.OnSavingProject
      m_Controller.SetCurrFile(sFile)
      EmitTitle()
      WritePrivateProfileString("General", "LastNgeDir", Path.GetDirectoryName(sFile), m_sIniFile)
   End Sub

   Private Sub OnSavedProject(ByVal sender As Object, ByVal bOk As Boolean) Handles Scene1.OnSavedProject
      If bOk Then
         m_Controller.ResetModified()
      Else
         MessageBox.Show("Error saving file", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnImportingProject(ByVal sender As Object, ByVal bOkType As Boolean) Handles Scene1.OnImportingProject
      If bOkType Then
         ClearObjTree()
      Else
         MessageBox.Show("File type unknown", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnImportedProject(ByVal sender As Object, ByVal sFile As String, ByVal bOk As Boolean) Handles Scene1.OnImportedProject
      m_Controller.SetCurrFile(sFile)
      m_Controller.ExecuteCommand(CMD.RESETCURRPARTLAYER)
      m_Controller.SetModified()
      WritePrivateProfileString("General", "LastImpDir", Path.GetDirectoryName(sFile), m_sIniFile)
      If Not bOk Then
         MessageBox.Show("Error importing file", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnExportingProject(ByVal sender As Object, ByVal sFile As String) Handles Scene1.OnExportingProject
      WritePrivateProfileString("General", "LastExpDir", Path.GetDirectoryName(sFile), m_sIniFile)
   End Sub

   Private Sub OnExportedProject(ByVal sender As Object, ByVal bOk As Boolean) Handles Scene1.OnExportedProject
      If Not bOk Then
         MessageBox.Show("Error exporting file", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnExecutingScript(ByVal sender As Object, ByVal sFile As String) Handles Scene1.OnExecutingScript
      WritePrivateProfileString("General", "LastLuaDir", Path.GetDirectoryName(sFile), m_sIniFile)
      ClearObjTree()
   End Sub

   Private Sub OnExecutedScript(ByVal sender As Object, ByVal bOk As Boolean, ByVal sError As String) Handles Scene1.OnExecutedScript
      m_Controller.SetModified()
      If Not bOk Then
         MessageBox.Show(sError, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
      End If
   End Sub

   Private Sub OnPrepareInputBox(ByVal sTitle As String, ByVal sLabel As String, ByRef sCheckLabel As String,
                                 ByVal bShowCombo As Boolean, ByVal bShowBtn As Boolean) Handles m_Controller.PrepareInputBox
      PrepareInputBox(sTitle, sLabel, sCheckLabel, bShowCombo, bShowBtn)
   End Sub

   Private Sub OnSetInputBoxText(ByVal sText As String) Handles m_Controller.SetInputBoxText
      SetInputBoxText(sText)
   End Sub

   Private Sub OnSetInputBoxCheck(ByVal bCheck As Boolean) Handles m_Controller.SetInputBoxCheck
      SetInputBoxCheck(bCheck)
   End Sub

   Private Sub OnAddInputBoxCombo(ByVal sText As String, ByVal bSelected As Boolean) Handles m_Controller.AddInputBoxCombo
      AddInputBoxCombo(sText, bSelected)
   End Sub

   Private Sub OnUpdateUI(ByVal sender As Object, ByVal bReloadUI As Boolean) Handles m_Controller.UpdateUI
      ' pulisco input e relativi messaggi
      ResetInputBox()
      tsStatusOutput.Text = ""
      ' aggiorno dati correnti
      EmitTitle()
      EmitCurrPartLayer()
      If bReloadUI Then
         LoadObjTree()
      Else
         UpdateObjTree()
      End If
   End Sub

 '-------------------------------- Buttons --------------------------------------------------------
   Private Sub btnNew_Click(sender As System.Object, e As System.EventArgs) Handles btnNew.Click
      ' gestisco eventuale file corrente modificato
      If Not m_Controller.ManageModified() Then
         Return
      End If
      ' eseguo
      Scene1.NewProject(True)
   End Sub

   Private Sub btnOpen_Click(sender As System.Object, e As System.EventArgs) Handles btnOpen.Click
      ' gestisco eventuale file corrente modificato
      If Not m_Controller.ManageModified() Then
         Return
      End If
      ' eseguo
      Dim sDir As String = String.Empty
      GetPrivateProfileString("General", "LastNgeDir", "", sDir, m_sIniFile)
      Scene1.OpenProject(sDir)
   End Sub

   Private Sub btnSave_Click(sender As System.Object, e As System.EventArgs) Handles btnSave.Click
      If Not String.IsNullOrWhiteSpace(m_Controller.GetCurrFile()) Then
         Scene1.SaveProject(m_Controller.GetCurrFile())
      Else
         Dim sFile As String = String.Empty
         GetPrivateProfileString("General", "LastNgeDir", "", sFile, m_sIniFile)
         sFile.TrimEnd("\"c)
         sFile += "\New.nge"
         Scene1.SaveAsProject(sFile)
      End If
   End Sub

   Private Sub btnSaveAs_Click(sender As System.Object, e As System.EventArgs) Handles btnSaveAs.Click
      Scene1.SaveAsProject(m_Controller.GetCurrFile())
   End Sub

   Private Sub btnImport_Click(sender As System.Object, e As System.EventArgs) Handles btnImport.Click
      ' gestisco eventuale file corrente modificato
      If Not m_Controller.ManageModified() Then
         Return
      End If
      ' eseguo
      Dim sDir As String = String.Empty
      GetPrivateProfileString("General", "LastImpDir", "", sDir, m_sIniFile)
      Scene1.ImportProject(sDir)
   End Sub

   Private Sub btnExport_Click(sender As System.Object, e As System.EventArgs) Handles btnExport.Click
      Scene1.ExportProject(Path.ChangeExtension(m_Controller.GetCurrFile(), "dxf"))
   End Sub

   Private Sub btnExec_Click(sender As System.Object, e As System.EventArgs) Handles btnExec.Click
      Dim sDir As String = String.Empty
      GetPrivateProfileString("General", "LastLuaDir", "", sDir, m_sIniFile)
      Scene1.Exec(sDir)
   End Sub

   Private Sub rbtWireFrame_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles rbtWireFrame.CheckedChanged
      Scene1.WireFrame()
   End Sub

   Private Sub rbtHiddenLine_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles rbtHiddenLine.CheckedChanged
      Scene1.HiddenLine()
   End Sub

   Private Sub rbtShading_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles rbtShading.CheckedChanged
      Scene1.Shading()
   End Sub

   Private Sub chkCurveDir_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles chkCurveDir.CheckedChanged
      EgtSetShowCurveDirection(chkCurveDir.Checked)
   End Sub

   Private Sub chkAnalyze_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles chkAnalyze.CheckedChanged
      If chkAnalyze.Checked Then
         chkGetDist.Checked = False
         Scene1.SetStatusAnalyze()
      Else
         Scene1.ResetStatusAnalyze()
         SelectIdInObjTree(GDB_ID.NULL)
      End If
   End Sub

   Private Sub chkGetDist_CheckedChanged(sender As System.Object, e As System.EventArgs) Handles chkGetDist.CheckedChanged
      If chkGetDist.Checked Then
         chkAnalyze.Checked = False
         Scene1.SetStatusGetDistance()
         tsStatusOutput.Text = "  "
      Else
         Scene1.ResetStatusGetDistance()
         tsStatusOutput.Text = "  "
      End If
   End Sub

   Private Sub btnZoomAll_Click(sender As System.Object, e As System.EventArgs) Handles btnZoomAll.Click
      Scene1.ZoomAll()
   End Sub

   Private Sub btnZoomIn_Click(sender As System.Object, e As System.EventArgs) Handles btnZoomIn.Click
      Scene1.ZoomIn()
   End Sub

   Private Sub btnZoomOut_Click(sender As System.Object, e As System.EventArgs) Handles btnZoomOut.Click
      Scene1.ZoomOut()
   End Sub

   Private Sub btnTop_Click(sender As System.Object, e As System.EventArgs) Handles btnTop.Click
      Scene1.TopView()
   End Sub

   Private Sub btnFront_Click(sender As System.Object, e As System.EventArgs) Handles btnFront.Click
      Scene1.FrontView()
   End Sub

   Private Sub btnLeft_Click(sender As System.Object, e As System.EventArgs) Handles btnLeft.Click
      Scene1.LeftView()
   End Sub

   Private Sub btnBack_Click(sender As System.Object, e As System.EventArgs) Handles btnBack.Click
      Scene1.BackView()
   End Sub

   Private Sub btnRight_Click(sender As System.Object, e As System.EventArgs) Handles btnRight.Click
      Scene1.RightView()
   End Sub

   Private Sub btnCPlane_Click(sender As System.Object, e As System.EventArgs) Handles btnCPlane.Click
      Scene1.CPlaneView()
   End Sub

   Private Sub btnIsoSW_Click(sender As System.Object, e As System.EventArgs) Handles btnIsoSW.Click
      Scene1.IsoViewSW()
   End Sub

   Private Sub btnIsoSE_Click(sender As System.Object, e As System.EventArgs) Handles btnIsoSE.Click
      Scene1.IsoViewSE()
   End Sub

   Private Sub btnIsoNE_Click(sender As System.Object, e As System.EventArgs) Handles btnIsoNE.Click
      Scene1.IsoViewNE()
   End Sub

   Private Sub btnIsoNW_Click(sender As System.Object, e As System.EventArgs) Handles btnIsoNW.Click
      Scene1.IsoViewNW()
   End Sub

   Private Sub btnCplaneTop_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneTop.Click
      m_Controller.SetLastInteger(GRID_TYPE.TOP)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneFront_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneFront.Click
      m_Controller.SetLastInteger(GRID_TYPE.FRONT)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneRight_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneRight.Click
      m_Controller.SetLastInteger(GRID_TYPE.RIGHT)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneBack_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneBack.Click
      m_Controller.SetLastInteger(GRID_TYPE.BACK)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneLeft_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneLeft.Click
      m_Controller.SetLastInteger(GRID_TYPE.LEFT)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneBottom_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneBottom.Click
      m_Controller.SetLastInteger(GRID_TYPE.BOTTOM)
      m_Controller.ExecuteCommand(CMD.GRID)
   End Sub

   Private Sub btnCplaneElevation_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneElevation.Click
      m_Controller.ExecuteCommand(CMD.GRID_ELEVATION)
   End Sub

   Private Sub btnCplaneOrigin_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneOrigin.Click
      m_Controller.ExecuteCommand(CMD.GRID_ORIGIN)
   End Sub

   Private Sub btnCplaneRotate_Click(sender As System.Object, e As System.EventArgs) Handles btnCplaneRotate.Click
      m_Controller.ExecuteCommand(CMD.GRID_ROTATE)
   End Sub

   Private Sub btnCplane3Points_Click(sender As System.Object, e As System.EventArgs) Handles btnCplane3P.Click
      m_Controller.ExecuteCommand(CMD.GRID_3P)
   End Sub

   Private Sub btnCplanePerpCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnCPlanePerpCurve.Click
      m_Controller.ExecuteCommand(CMD.GRID_PERPCURVE)
   End Sub

   Private Sub btnCplaneObject_Click(sender As System.Object, e As System.EventArgs) Handles btnCPlaneObj.Click
      m_Controller.ExecuteCommand(CMD.GRID_OBJ)
   End Sub

   ' --------------------- Update UI -------------------------------
   Private Sub Application_Idle(ByVal sender As Object, ByVal e As EventArgs)
      ' Gestione abilitazione bottoni
      Dim bLayerOk As Boolean = (m_Controller.GetCurrLayer() <> GDB_ID.NULL)
      Dim bSelOk As Boolean = (EgtGetFirstSelectedObj() <> GDB_ID.NULL)
      ' Grid
      btnCplaneElevation.Enabled = m_bShowGrid
      btnCplaneOrigin.Enabled = m_bShowGrid
      btnCplaneRotate.Enabled = m_bShowGrid
      btnCplane3P.Enabled = m_bShowGrid
      btnCPlanePerpCurve.Enabled = m_bShowGrid
      btnCPlaneObj.Enabled = m_bShowGrid And bSelOk
      ' Draw
      btnPoint.Enabled = bLayerOk
      btnLine2P.Enabled = bLayerOk
      btnLinePDL.Enabled = bLayerOk
      btnCircleCP.Enabled = bLayerOk
      btnCircleCD.Enabled = bLayerOk
      btnArcCSE.Enabled = bLayerOk
      btnArc3P.Enabled = bLayerOk
      btnArcPDP.Enabled = bLayerOk
      btnRectangle2P.Enabled = bLayerOk
      ' Construct
      btnPlane.Enabled = bLayerOk And bSelOk
      btnExtrude.Enabled = bLayerOk And bSelOk
      btnRevolve.Enabled = bLayerOk And bSelOk
      btnRuled.Enabled = bLayerOk And bSelOk
      ' Edit
      btnDelete.Enabled = bSelOk
      btnChangeLayer.Enabled = bSelOk
      btnChangeColor.Enabled = bSelOk
      btnInvertCurve.Enabled = bSelOk
      btnExtendCurve.Enabled = bSelOk
      btnBreakCurve.Enabled = bSelOk
      btnJoinCurve.Enabled = bLayerOk And bSelOk
      btnExplodeCurve.Enabled = bSelOk
      btnSetCurveTh.Enabled = bSelOk
      ' Transform
      btnMove.Enabled = bSelOk
      btnRotate.Enabled = bSelOk
      btnMirror.Enabled = bSelOk
      btnScale.Enabled = bSelOk
      btnOffset.Enabled = bSelOk
   End Sub


   ' --------------------- Commands --------------------------------
   Private Sub btnPoint_Click(sender As System.Object, e As System.EventArgs) Handles btnPoint.Click
      m_Controller.ExecuteCommand(CMD.POINT)
   End Sub

   Private Sub btnLine2P_Click(sender As System.Object, e As System.EventArgs) Handles btnLine2P.Click
      m_Controller.ExecuteCommand(CMD.LINE2P)
   End Sub

   Private Sub btnLinePDL_Click(sender As System.Object, e As System.EventArgs) Handles btnLinePDL.Click
      m_Controller.ExecuteCommand(CMD.LINEPDL)
   End Sub

   Private Sub btnCircleCP_Click(sender As System.Object, e As System.EventArgs) Handles btnCircleCP.Click
      m_Controller.ExecuteCommand(CMD.CIRCLECP)
   End Sub

   Private Sub btnCircleCD_Click(sender As System.Object, e As System.EventArgs) Handles btnCircleCD.Click
      m_Controller.ExecuteCommand(CMD.CIRCLECD)
   End Sub

   Private Sub btnArcCSE_Click(sender As System.Object, e As System.EventArgs) Handles btnArcCSE.Click
      m_Controller.ExecuteCommand(CMD.ARCCSE)
   End Sub

   Private Sub btnArc3P_Click(sender As System.Object, e As System.EventArgs) Handles btnArc3P.Click
      m_Controller.ExecuteCommand(CMD.ARC3P)
   End Sub

   Private Sub btnArcPDP_Click(sender As System.Object, e As System.EventArgs) Handles btnArcPDP.Click
      m_Controller.ExecuteCommand(CMD.ARCPDP)
   End Sub

   Private Sub btnRectangle2P_Click(sender As System.Object, e As System.EventArgs) Handles btnRectangle2P.Click
      m_Controller.ExecuteCommand(CMD.RECTANGLE2P)
   End Sub

   Private Sub btnPlane_Click(sender As System.Object, e As System.EventArgs) Handles btnPlane.Click
      m_Controller.ExecuteCommand(CMD.PLANE)
   End Sub

   Private Sub btnExtrude_Click(sender As System.Object, e As System.EventArgs) Handles btnExtrude.Click
      m_Controller.ExecuteCommand(CMD.EXTRUDE)
   End Sub

   Private Sub btnRevolve_Click(sender As System.Object, e As System.EventArgs) Handles btnRevolve.Click
      If (ModifierKeys And Keys.Shift) <> Keys.Shift Then
         m_Controller.ExecuteCommand(CMD.REVOLVE)
      Else
         m_Controller.ExecuteCommand(CMD.REVOLVEPLUS)
      End If
   End Sub

   Private Sub btnRuled_Click(sender As System.Object, e As System.EventArgs) Handles btnRuled.Click
      m_Controller.ExecuteCommand(CMD.RULED)
   End Sub

   Private Sub btnDelete_Click(sender As System.Object, e As System.EventArgs) Handles btnDelete.Click
      m_Controller.SetLastInteger(GDB_ID.SEL)
      m_Controller.ExecuteCommand(CMD.DELETE)
   End Sub

   Private Sub btnChangeLayer_Click(sender As System.Object, e As System.EventArgs) Handles btnChangeLayer.Click
      m_Controller.ExecuteCommand(CMD.CHANGELAYER)
   End Sub

   Private Sub btnChangeColor_Click(sender As System.Object, e As System.EventArgs) Handles btnChangeColor.Click
      If (ModifierKeys And Keys.Shift) <> Keys.Shift Then
         m_Controller.ExecuteCommand(CMD.CHANGECOLOR)
      Else
         m_Controller.ExecuteCommand(CMD.RESETCOLOR)
      End If
   End Sub

   Private Sub btnInvertCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnInvertCurve.Click
      m_Controller.ExecuteCommand(CMD.INVERTCRVSURF)
   End Sub

   Private Sub btnExtendCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnExtendCurve.Click
      m_Controller.ExecuteCommand(CMD.TRIMEXTENDCURVE)
   End Sub

   Private Sub btnBreakCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnBreakCurve.Click
      m_Controller.ExecuteCommand(CMD.BREAKCURVE)
   End Sub

   Private Sub btnJoinCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnJoinCurve.Click
      m_Controller.ExecuteCommand(CMD.JOINCURVE)
   End Sub

   Private Sub btnExplodeCurve_Click(sender As System.Object, e As System.EventArgs) Handles btnExplodeCurve.Click
      m_Controller.ExecuteCommand(CMD.EXPLODECURVE)
   End Sub

   Private Sub btnSetCurveTh_Click(sender As System.Object, e As System.EventArgs) Handles btnSetCurveTh.Click
      m_Controller.ExecuteCommand(CMD.SETCURVETHICKNESS)
   End Sub

   Private Sub btnMove_Click(sender As System.Object, e As System.EventArgs) Handles btnMove.Click
      m_Controller.ExecuteCommand(CMD.MOVE)
   End Sub

   Private Sub btnRotate_Click(sender As System.Object, e As System.EventArgs) Handles btnRotate.Click
      If (ModifierKeys And Keys.Shift) <> Keys.Shift Then
         m_Controller.ExecuteCommand(CMD.ROTATE)
      Else
         m_Controller.ExecuteCommand(CMD.ROTATE3D)
      End If
   End Sub

   Private Sub btnMirror_Click(sender As System.Object, e As System.EventArgs) Handles btnMirror.Click
      m_Controller.ExecuteCommand(CMD.MIRROR)
   End Sub

   Private Sub btnScale_Click(sender As System.Object, e As System.EventArgs) Handles btnScale.Click
      If (ModifierKeys And Keys.Shift) <> Keys.Shift Then
         m_Controller.ExecuteCommand(CMD.SCALE)
      Else
         m_Controller.ExecuteCommand(CMD.SCALE3D)
      End If
   End Sub

   Private Sub btnOffset_Click(sender As System.Object, e As System.EventArgs) Handles btnOffset.Click
      m_Controller.ExecuteCommand(CMD.OFFSET)
   End Sub


   ' ----------------- Test Commands -------------------
   Private Sub XbtnRotP90_Click(sender As System.Object, e As System.EventArgs) Handles XbtnRotP90.Click
      XRotate(90)
      ' aggiorno visualizzazione
      Scene1.ZoomAll()
      UpdateObjInObjTree(m_nObjTreeOldId)
   End Sub

   Private Sub XbtnRotM90_Click(sender As System.Object, e As System.EventArgs) Handles XbtnRotM90.Click
      XRotate(-90)
      ' aggiorno visualizzazione
      Scene1.ZoomAll()
      UpdateObjInObjTree(m_nObjTreeOldId)
   End Sub

   Private Sub XRotate(ByVal dAngRotDeg As Double)
      ' indice del primo gruppo sotto la radice
      Dim nId As Integer = EgtGetFirstInGroup(GDB_ID.ROOT)
      ' recupero il box del gruppo in globale
      Dim PtMinPre As New Point3d
      Dim PtMaxPre As New Point3d
      EgtGetBBoxGlob(nId, BBF.IGNORE_TEXT + BBF.EXACT, PtMinPre, PtMaxPre)
      ' ruoto attorno al punto minimo
      EgtRotateGlob(nId, PtMinPre, EgtGetGridVersZ(), dAngRotDeg)
      ' calcolo nuovo box in globale
      Dim PtMinPost As New Point3d
      Dim PtMaxPost As New Point3d
      EgtGetBBoxGlob(nId, BBF.IGNORE_TEXT + BBF.EXACT, PtMinPost, PtMaxPost)
      ' eseguo traslazione per riavere lo stesso punto minimo
      Dim VtMove As Vector3d = PtMinPre - PtMinPost
      EgtMoveGlob(nId, VtMove)
   End Sub

   Private Sub XbtnMirror_Click(sender As System.Object, e As System.EventArgs) Handles XbtnMirror.Click
      ' indice del primo gruppo sotto la radice
      Dim nId As Integer = EgtGetFirstInGroup(GDB_ID.ROOT)
      ' recupero il box del gruppo in globale
      Dim PtMin As New Point3d
      Dim PtMax As New Point3d
      EgtGetBBoxGlob(nId, BBF.IGNORE_TEXT + BBF.EXACT, PtMin, PtMax)
      Dim PtCen As Point3d = Point3d.Media(PtMin, PtMax)
      ' mirror rispetto a Y centrato nel box
      EgtMirrorGlob(nId, PtCen, Vector3d.X_AX)
      ' sistemo gli eventuali testi
      XUnMirrorTexts(nId)
      ' aggiorno visualizzazione
      Scene1.ZoomAll()
      UpdateObjInObjTree(m_nObjTreeOldId)
   End Sub

   Private Sub XUnMirrorTexts(ByVal nGroupId As Integer)
      Dim nId As Integer = EgtGetFirstInGroup(nGroupId)
      While nId <> GDB_ID.NULL
         'recupero il tipo di oggetto
         Dim nType As Integer = EgtGetType(nId)
         'se gruppo
         If nType = GDB_TY.GROUP Then
            XUnMirrorTexts(nId)
         ' se testo
         ElseIf nType = GDB_TY.EXT_TEXT Then
            EgtMirrorText(nId, True)
         End If
         ' passo al successivo
         nId = EgtGetNext(nId)
      End While
   End Sub


  '-------------------------------- KeyDown --------------------------------------------------------
   Private Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As KeyEventArgs) Handles MyBase.KeyDown
      ' Con ESC esco dall'azione corrente
      If e.KeyData = Keys.Escape Then
         ' reset Azione corrente
         m_Controller.ResetStatus()
         ' reset Analisi e Distanza
         chkAnalyze.Checked = False
         chkGetDist.Checked = False
         ' pulisco output
         tsStatusOutput.Text = ""
         ResetInputBox()
      End If
   End Sub

   Private Sub Scene1_KeyDown(ByVal sender As System.Object, ByVal e As KeyEventArgs) Handles Scene1.KeyDown
      ' Con DEL eseguo cancellazione delle entità selezionate
      If e.KeyData = Keys.Delete Then
         m_Controller.SetLastInteger(GDB_ID.SEL)
         m_Controller.ExecuteCommand(CMD.DELETE)
      ' con SPAZIO ripeto l'ultimo comando
      ElseIf e.KeyData = Keys.Space Then
         m_Controller.RepeatLastCommand()
      End If
   End Sub


   ' --------------------- Input Box -------------------------------
   Private Sub PrepareInputBox(ByRef sTitle As String, ByRef sLabel As String, ByRef sCheckLabel As String,
                               ByVal bShowCombo As Boolean, ByVal bShowBtn As Boolean)
      InputBox.Text = sTitle
      InputBox.Show()
      InputLabel.Text = sLabel
      InputLabel.Show()
      InputText.Text = ""
      InputText.Show()
      If sCheckLabel <> "" Then
         InputCheck.Text = sCheckLabel
         InputCheck.Show()
      End If
      If bShowCombo Then
         InputCombo.Items.Clear()
         InputCombo.Show()
      End If
      If bShowBtn Then
         btnShow.Show()
      End If
      InputText.Focus()
   End Sub

   Private Sub ResetInputBox()
      InputBox.Hide()
      InputCheck.Hide()
      InputCombo.Hide()
      btnShow.Hide()
   End Sub

   Private Function SetInputBoxText(ByVal sVal As String) As Boolean
      InputText.Text = sVal
      Return True
   End Function

   Private Function SetInputBoxCheck(ByVal bCheck As Boolean) As Boolean
      InputCheck.Checked = bCheck
      m_Controller.SetLastBoolean(InputCheck.Checked)
      Return True
   End Function

   Private Function AddInputBoxCombo(ByVal sText As String, ByVal bSelected As Boolean) As Boolean
      Dim nId As Integer = InputCombo.Items.Add(sText)
      If bSelected Then
         InputCombo.SelectedIndex = nId
      End If
      Return True
   End Function

   Private Sub InputText_KeyDown(ByVal sender As System.Object, ByVal e As KeyEventArgs) Handles InputText.KeyDown
      ' Con SHIFT aggiorno la grafica con i dati correnti
      If (e.KeyData And Keys.Shift) = Keys.Shift Then
         m_Controller.Show(InputText.Text)
      ' Con RETURN avanzo di un passo
      ElseIf e.KeyData = Keys.Return Then
         m_Controller.Done(InputText.Text)
      End If
   End Sub

   Private Sub InputCheck_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs) Handles InputCheck.CheckedChanged
      m_Controller.SetLastBoolean(InputCheck.Checked)
   End Sub

   Private Sub InputCombo_SelectionChanged(ByVal sender As Object, ByVal e As EventArgs) Handles InputCombo.SelectedIndexChanged
      m_Controller.SetLastInteger(InputCombo.SelectedIndex)
   End Sub

   Private Sub btnShow_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnShow.Click
      m_Controller.Show(InputText.Text)
   End Sub

   Private Sub btnDone_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDone.Click
      m_Controller.Done(InputText.Text)
   End Sub

  '-------------------------------- Command Box ----------------------------------------------------
   Private Sub tboxCmd_KeyDown(sender As System.Object, e As System.Windows.Forms.KeyEventArgs) Handles tboxCmd.KeyDown
      If (e.KeyCode = Keys.Enter) Then
         Dim nLine As Integer = tboxCmd.GetLineFromCharIndex(tboxCmd.GetFirstCharIndexOfCurrentLine)
         Dim sCmd As String = tboxCmd.Lines(nLine).ToString
         If Not String.IsNullOrEmpty(sCmd) Then
            ' ripristino stato oggetto marcato
            Dim nIdOld As Integer = RevertOldIdInObjTree()
            ' eseguo comando
            If EgtTscExecLine(sCmd) Then
               Scene1.Invalidate()
               tsStatusOnR.Text = "   "
            Else
               tsStatusOnR.Text = "Error executing command"
            End If
            ' ricarico albero degli oggetti
            LoadObjTree()
            SelectIdInObjTree(nIdOld)
         End If
      End If
   End Sub


 '-------------------------------- Current Piece/Layer --------------------------------------------
   Private Sub btnNewPart_Click(sender As Object, e As EventArgs) Handles btnNewPart.Click
      m_Controller.ExecuteCommand(CMD.NEWPART)
   End Sub

   Private Sub btnNewLayer_Click(sender As Object, e As EventArgs) Handles btnNewLayer.Click
      m_Controller.ExecuteCommand(CMD.NEWLAYER)
   End Sub

   Private Sub btnColor_Click(sender As Object, e As EventArgs) Handles btnColor.Click
      m_Controller.ExecuteCommand(CMD.LAYERCOLOR)
   End Sub

   Private Sub EmitCurrPartLayer()
      Dim sText As String = "   "
      Dim sName As String = String.Empty
      Dim colObj As Color3d
      EgtGetColor(GDB_ID.ROOT, colObj)
      Dim nCurrPart As Integer = m_Controller.GetCurrPart()
      If nCurrPart <> GDB_ID.NULL Then
         If EgtGetName(nCurrPart, sName) Then
            sText = sName
         Else
            sText = "Part " + nCurrPart.ToString()
         End If
         EgtGetCalcColor(nCurrPart, colObj)
         Dim nCurrLayer As Integer = m_Controller.GetCurrLayer()
         If nCurrLayer <> GDB_ID.NULL And EgtExistsObj(nCurrLayer) Then
            If EgtGetName(nCurrLayer, sName) Then
               sText += " --> " + sName
            Else
               sText += " --> Layer " + nCurrLayer.ToString()
            End If
            EgtGetCalcColor(nCurrLayer, colObj)
         End If
      End If
      txtPartLay.Text = sText
      colObj.A = 100
      txtColor.BackColor = colObj.ToColor()
   End Sub


 '-------------------------------- Tree View ------------------------------------------------------
   Private m_nObjTreeOldId As Integer = GDB_ID.NULL
   Private m_nObjTreeMenuId As Integer = GDB_ID.NULL

   Private Sub ObjTreeTickEvent(source As Object, e As EventArgs) Handles ObjTreeTimer.Tick
      If m_nObjTreeOldId <> GDB_ID.NULL Then
         EgtResetMark(m_nObjTreeOldId)
         EgtDraw()
      End If
      ObjTreeTimer.Stop()
   End Sub

   Public Sub LoadObjTree()
      Dim nOldId As Integer = ClearObjTree()
      TreeView1.BeginUpdate()
      AddGroupInObjTree(GDB_ID.ROOT, 0, TreeView1.Nodes)
      TreeView1.EndUpdate()
      If nOldId <> GDB_ID.NULL Then
         SelectIdInObjTree(nOldId)
         UpdateObjDataInObjTree(m_nObjTreeOldId)
      End If
   End Sub

   Private Function ClearObjTree() As Integer
      Dim nOldId As Integer = RevertOldIdInObjTree()
      TreeView1.Nodes.Clear()
      Return nOldId
   End Function

   Private Sub AddGroupInObjTree(ByVal nGroupId As Integer, ByVal nLev As Integer, ByRef PrevNodColl As TreeNodeCollection)

      Dim CurrNodColl As TreeNodeCollection

      If nGroupId = GDB_ID.ROOT Then
         CurrNodColl = PrevNodColl
      Else
         Dim sName As String = String.Empty
         Dim sText As String = String.Empty
         If EgtGetName(nGroupId, sName) Then
            If nLev = 1 Then
               sText = sName + " (Part " + nGroupId.ToString + ")"
            ElseIf nLev = 2 Then
               sText = sName + " (Layer " + nGroupId.ToString + ")"
            Else
               sText = sName + " (Group " + nGroupId.ToString + ")"
            End If
         Else
            If nLev = 1 Then
               sText = "Part " + nGroupId.ToString
            ElseIf nLev = 2 Then
               sText = "Layer " + nGroupId.ToString
            Else
               sText = "Group " + nGroupId.ToString
            End If
         End If
         Dim nImage As Integer = TypeToImageInObjTree(GDB_TY.GROUP, nLev)
         Dim CurrNod As TreeNode = PrevNodColl.Add(nGroupId.ToString(), sText, nImage, nImage)
         CurrNodColl = CurrNod.Nodes
         Dim nStat As GDB_ST = GDB_ST.ON_
         EgtGetStatus(nGroupId, nStat)
         CurrNod.Checked = (nStat <> GDB_ST.OFF)
      End If

      Dim nObjs As Integer = EgtGetGroupObjs(nGroupId)
      If (nObjs > 20000) Then
         Dim sText As String = "Too many entities (" + nObjs.ToString() + ")"
         CurrNodColl.Add(GDB_ID.NULL.ToString(), sText)
         Return
      End If

      Dim nId As Integer = EgtGetFirstInGroup(nGroupId)
      While nId <> GDB_ID.NULL
         'recupero il tipo di nodo
         Dim nType As Integer = EgtGetType(nId)
         'se gruppo
         If nType = GDB_TY.GROUP Then
            AddGroupInObjTree(nId, nLev + 1, CurrNodColl)
         'se oggetto geometrico
         ElseIf nType >= GDB_TY.GEO_VECTOR Then
            Dim sTitle As String = String.Empty
            EgtGetTitle(nId, sTitle)
            Dim sName As String = String.Empty
            Dim sText As String = String.Empty
            If EgtGetName(nId, sName) Then
               sText = sName + " (" + sTitle + " " + nId.ToString + ")"
            Else
               sText = sTitle + " " + nId.ToString
            End If
            Dim nImage As Integer = TypeToImageInObjTree(nType, nLev)
            Dim CurrNod As TreeNode = CurrNodColl.Add(nId.ToString, sText, nImage, nImage)
            Dim nStat As GDB_ST = GDB_ST.ON_
            EgtGetStatus(nId, nStat)
            CurrNod.Checked = (nStat <> GDB_ST.OFF)
         End If
         'passo al successivo
         nId = EgtGetNext(nId)
      End While
   End Sub

   Private Sub UpdateObjTree()
      ' per aggiornare l'albero senza ricostruirlo da capo
      ' se c'è una entità corrente, ne aggiorno i dati
      If m_nObjTreeOldId <> GDB_ID.NULL Then
         UpdateObjDataInObjTree(m_nObjTreeOldId)
      End If
   End Sub

   Private Function TypeToImageInObjTree(ByVal nType As Integer, ByVal nLev As Integer) As Integer
      Select Case nType
      Case GDB_TY.GROUP
         If nLev = 1 Then
            Return 3
         ElseIf nLev = 2 Then
            Return 4
         Else
            Return 2
         End If
      Case GDB_TY.GEO_VECTOR
         Return 5
      Case GDB_TY.GEO_POINT
         Return 6
      Case GDB_TY.GEO_FRAME
         Return 7
      Case GDB_TY.CRV_LINE
         Return 8
      Case GDB_TY.CRV_ARC
         Return 9
      Case GDB_TY.CRV_BEZ
         Return 10
      Case GDB_TY.CRV_COMPO
         Return 11
      Case GDB_TY.SRF_MESH
         Return 12
      Case GDB_TY.EXT_TEXT
         Return 13
      End Select
      Return 1
   End Function

   Private Sub ObjTree_AfterCheck(ByVal sender As Object, ByVal e As TreeViewEventArgs) Handles TreeView1.AfterCheck
      ' verifico che il check derivi da azione utente
      If e.Action = TreeViewAction.Unknown Then
         Return
      End If
      ' recupero l'Id del nuovo oggetto
      Dim nId As Integer
      If Not Int32.TryParse(e.Node.Name, nId) Then
         Return
      End If
      ' eseguo operazione
      m_Controller.SetLastInteger(nId)
      If e.Node.Checked Then
         m_Controller.ExecuteCommand(CMD.SHOW)
      Else
         m_Controller.ExecuteCommand(CMD.HIDE)
      End If
   End Sub

   Private Sub ObjTree_AfterSelect(ByVal sender As Object, ByVal e As TreeViewEventArgs) Handles TreeView1.AfterSelect
      ' verifico che il select derivi da azione utente
      If e.Action = TreeViewAction.Unknown Then
         Return
      End If
      ' recupero l'Id del nuovo oggetto selezionato
      Dim nId As Integer
      If Not Int32.TryParse(e.Node.Name, nId) Then
         Return
      End If
      UpdateObjInObjTree(nId)
   End Sub

   Private Sub ObjTree_MouseUp(ByVal sender As Object, e As MouseEventArgs) Handles TreeView1.MouseUp
      ' determino Id di eventuale item sotto il mouse
      Dim nId As Integer = GDB_ID.NULL
      Dim TNode As TreeNode = TreeView1.GetNodeAt(e.Location)
      If TNode IsNot Nothing Then
         Int32.TryParse(TNode.Name, nId)
      End If
      ' se Id coincide con il corrente
      If nId <> GDB_ID.NULL And nId = m_nObjTreeOldId Then
         ' evidenzio
         EgtSetMark(m_nObjTreeOldId)
         EgtDraw()
         ' lancio timer per successiva de-evidenziazione
         ObjTreeTimer.Stop()
         ObjTreeTimer.Start()
      End If
      ' se rilascio tasto destro
      If e.Button = Windows.Forms.MouseButtons.Right Then
         ' Id pezzo sotto il mouse
         m_nObjTreeMenuId = nId
         ' verifico stato visualizzazione per abilitare voci menù
         Dim nStat As GDB_ST = GDB_ST.ON_
         Dim bOn As Boolean = EgtGetCalcStatus(m_nObjTreeMenuId, nStat) And nStat <> GDB_ST.OFF
         For Each i As ToolStripItem In ContextMenuTreeView1.Items
            i.Enabled = bOn
         Next
         ContextMenuTreeView1.Show(TreeView1, e.Location)
      End If
   End Sub

   Private Sub ObjTree_MouseDoubleClick(ByVal sender As Object, e As MouseEventArgs) Handles TreeView1.MouseDoubleClick
      If m_nObjTreeOldId <> GDB_ID.NULL Then
         m_Controller.SetLastInteger(m_nObjTreeOldId)
         m_Controller.ExecuteCommand(CMD.SETCURRPARTLAYER)
      End If
   End Sub

   Private Sub UpdateObjInObjTree(ByVal nId As Integer)
      ' ripristino eventuale vecchio oggetto selezionato
      RevertOldIdInObjTree()
      ' stampa dei dati del nuovo oggetto
      UpdateObjDataInObjTree(nId)
      ' evidenzio l'oggetto
      EgtSetMark(nId)
      m_nObjTreeOldId = nId
      ' imposto il ridisegno della scena
      EgtDraw()
      ' lancio timer per successiva de-evidenziazione
      ObjTreeTimer.Stop()
      ObjTreeTimer.Start()
   End Sub

   Private Sub UpdateObjDataInObjTree(ByVal nId As Integer)
      ' recupero il tipo del nuovo oggetto
      Dim nType As Integer = EgtGetType(nId)
      ' stampa dei dati dell'oggetto
      Dim sDump As String = String.Empty
      If nType = GDB_TY.NONE Then
         tBoxInfo.Text = String.Empty
      ElseIf nType = GDB_TY.GROUP Then
         If EgtGroupDump(nId, sDump) Then
            tBoxInfo.Text = sDump
         Else
            tBoxInfo.Text = String.Empty
         End If
      Else
         If EgtGeoObjDump(nId, sDump) Then
            tBoxInfo.Text = sDump
         Else
            tBoxInfo.Text = String.Empty
         End If
      End If
   End Sub

   Private Function RevertOldIdInObjTree() As Integer
      ' salvo il vecchio Id
      Dim nOldId As Integer = m_nObjTreeOldId
      ' se non nullo...
      If EgtExistsObj(m_nObjTreeOldId) Then
         ' smarco l'oggetto
         EgtResetMark(m_nObjTreeOldId)
         ' annullo oggetto da ripristinare
         m_nObjTreeOldId = GDB_ID.NULL
      End If
      Return nOldId
   End Function

   Private Function SelectIdInObjTree(ByVal nId As Integer) As Boolean
      Dim tNode() As TreeNode = TreeView1.Nodes.Find(nId.ToString, True)
      If tNode.Length > 0 Then
         TreeView1.SelectedNode = tNode(0)
         TreeView1.SelectedNode.Expand()
         m_nObjTreeOldId = nId
         Return True
      Else
         m_nObjTreeOldId = GDB_ID.NULL
         Return False
      End If
   End Function

   Private Sub MenuObjTree_ItemClicked(sender As Object, e As ToolStripItemClickedEventArgs) Handles ContextMenuTreeView1.ItemClicked
      If e.ClickedItem.Name = "cmdSelectPartLayObj" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.SELECTPARTLAYEROBJ)
      ElseIf e.ClickedItem.Name = "cmdDeselectPartLayObj" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.DESELECTPARTLAYEROBJ)
      ElseIf e.ClickedItem.Name = "cmdSetName" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.SETNAME)
      ElseIf e.ClickedItem.Name = "cmdSetInfo" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.SETINFO)
      ElseIf e.ClickedItem.Name = "cmdRelocatePartLayObj" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.RELOCATEPARTLAYEROBJ)
      ElseIf e.ClickedItem.Name = "cmdCopyPartLayObj" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.COPYPARTLAYEROBJ)
      ElseIf e.ClickedItem.Name = "cmdDeletePartLayObj" Then
         m_Controller.SetLastInteger(m_nObjTreeMenuId)
         m_Controller.ExecuteCommand(CMD.DELETE)
      End If
   End Sub

  '-------------------------------- Program Title --------------------------------------------------
   Private Sub EmitTitle()
      ' nome file
      Dim sTitle As String = m_Controller.GetCurrFile()
      If String.IsNullOrEmpty(sTitle) Then
         sTitle = "New"
      End If
      ' indicazione di modificato 
      If m_Controller.GetModified() Then
         sTitle += "*"
      End If
      ' dati del prodotto
      sTitle += " - EgalTech TestEIn"
      ' emissione del titolo
      Me.Text = sTitle
   End Sub

  '-------------------------------- Status Bar -----------------------------------------------------
   Private Sub ToolStripStatusSnapPointType_Changed(ByVal sender As Object, ByVal nSpType As SP) Handles Scene1.OnChangedSnapPointType
      Select Case nSpType
      Case SP.PT_SKETCH
         tsStatusSnapPointType.Text = "Sketch Point"
      Case SP.PT_GRID
         tsStatusSnapPointType.Text = "Grid Point"
      Case SP.PT_END
         tsStatusSnapPointType.Text = "End Point"
      Case SP.PT_MID
         tsStatusSnapPointType.Text = "Mid Point"
      Case SP.CENTER
         tsStatusSnapPointType.Text = "Center"
      Case SP.PT_NEAR
         tsStatusSnapPointType.Text = "Near Point"
      Case SP.PT_INTERS
         tsStatusSnapPointType.Text = "Inters Point"
      Case SP.PT_TANGENT
         tsStatusSnapPointType.Text = "Tang Point"
      Case SP.PT_PERPENDICULAR
         tsStatusSnapPointType.Text = "Perp Point"
      Case SP.PT_MINDIST
         tsStatusSnapPointType.Text = "MinDist Point"
      Case Else
         tsStatusSnapPointType.Text = "---"
      End Select
   End Sub

   Private Sub ToolStripStatusGrid_Click() Handles tsStatusGrid.Click
      m_bShowGrid = Not m_bShowGrid
      If m_bShowGrid Then
         tsStatusGrid.ForeColor = Color.Black
         tsStatusGrid.Text = "GRID ON "
      Else
         tsStatusGrid.ForeColor = Color.LightGray
         tsStatusGrid.Text = "GRID OFF"
      End If
      EgtSetGridShow(m_bShowGrid, m_bShowGrid And m_bShowGridFrame)
      EgtDraw()
   End Sub

   Private Sub ToolStripStatusTypePos_Click() Handles tsStatusCurPosType.Click
      m_bCPlaneTypePos = Not m_bCPlaneTypePos
      If m_bCPlaneTypePos Then
         tsStatusCurPosType.Text = "CPLANE"
      Else
         tsStatusCurPosType.Text = "WORLD "
      End If
      Scene1.SetGridCursorPos(m_bCPlaneTypePos)
   End Sub

Private Sub ToolStripSnapPointType_Changed(sender As System.Object, nSpType As TestEIn.EgtInterface.SP)

End Sub
End Class