Imports System.Collections.ObjectModel
Imports EgtUILib

Module SelData

  Private Class SelData
      Friend m_nId As Integer
      Friend m_nSub As Integer
      Friend m_nSel As Integer
      Sub New()
         m_nId = GDB_ID.NULL
         m_nSub = -1
         m_nSel = GDB_ID.NULL
      End Sub
      Sub New(nId As Integer, nSub As Integer, nSel As Integer)
         m_nId = nId
         m_nSub = nSub
         m_nSel = nSel
      End Sub
   End Class

   Private m_IdSub As New List(Of SelData)
   Private m_SelGrpId As Integer = GDB_ID.NULL

   Friend Sub ClearIdSub()
      RemoveSelGroup()
      m_IdSub.Clear()
   End Sub

   Friend Sub VerifyIdSub()
      ' Elimino i record con identificativi di entità non selezionate
      Dim i As Integer = 0
      Do While i < m_IdSub.Count() - 1
         If Not EgtIsSelectedObj( m_IdSub( i).m_nId) Then
            EgtErase( m_IdSub( i).m_nSel)
            m_IdSub.RemoveAt( i)
         Else
            i += 1
         End If
      Loop
   End Sub

   Friend Function AddIdSub(nId As Integer, nSub As Integer) As Boolean
      ' Verifico se la coppia Id,Sub è già in lista
      For i As Integer = 0 To m_IdSub.Count() - 1
         If m_IdSub(i).m_nId = nId And m_IdSub(i).m_nSub = nSub Then Return True
      Next
      ' Visualizzo contorno faccia
      Dim nSelId As Integer = CreateFacetOrChunkOutline( nId, nSub)
      ' Non trovato, aggiungo un nuovo record
      m_IdSub.Add(New SelData( nId, nSub, nSelId))
      Return True
   End Function

   Friend Function RemoveIdSub( nId As Integer, nSub As Integer) As Boolean
      ' Ricerca ed eliminazione del record con la coppia Id,Sub da rimuovere
      For i As Integer = 0 To m_IdSub.Count() - 1
         If m_IdSub( i).m_nId = nId And m_IdSub( i).m_nSub = nSub Then
            EgtErase( m_IdSub( i).m_nSel)
            m_IdSub.RemoveAt( i)
            Exit For
         End If
      Next
      Return True
   End Function

   Friend Function RemoveId( nId As Integer) As Boolean
      ' Ricerca ed eliminazione di record con identificativo da rimuovere
      For i As Integer = m_IdSub.Count() - 1 To 0 Step -1
         If m_IdSub( i).m_nId = nId Then
            EgtErase( m_IdSub( i).m_nSel)
            m_IdSub.RemoveAt( i)
         End If
      Next
      Return True
   End Function

   Friend Function FindIdSub( nId As Integer, nSub As Integer) As Boolean
      For i As Integer = 0 To m_IdSub.Count() - 1
         If m_IdSub(i).m_nId = nId And m_IdSub(i).m_nSub = nSub Then Return True
      Next
      Return False
   End Function

   Friend Function FindId(nId As Integer) As Boolean
      For i As Integer = 0 To m_IdSub.Count() - 1
         If m_IdSub(i).m_nId = nId Then Return True
      Next
      Return False
   End Function

   Friend Function GetIdSubCount() As Integer
      Return m_IdSub.Count()
   End Function

   Friend Function GetIdSub(nInd As Integer, ByRef nId As Integer, ByRef nSub As Integer) As Boolean
      If nInd < 0 Or nInd > m_IdSub.Count() - 1 Then
         nId = GDB_ID.NULL
         Return False
      End If
      nId = m_IdSub(nInd).m_nId
      nSub = m_IdSub(nInd).m_nSub
      Return True
   End Function

   Friend Function GetAllIdSub(ByRef vId() As Integer, ByRef vSub() As Integer) As Boolean
      Dim MyId(m_IdSub.Count() - 1) As Integer
      Dim MySub(m_IdSub.Count() - 1) As Integer
      For i As Integer = 0 To m_IdSub.Count() - 1
         MyId(i) = m_IdSub(i).m_nId
         MySub(i) = m_IdSub(i).m_nSub
      Next
      vId = MyId
      vSub = MySub
      Return True
   End Function

   Private Function VerifySelGroup() As Boolean
      If m_SelGrpId <> GDB_ID.NULL Then Return True
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      m_SelGrpId = EgtCreateGroup( GDB_ID.ROOT)
      EgtSetName( m_SelGrpId, "$$SELDATA")
      EgtSetLevel( m_SelGrpId, GDB_LV.TEMP)
      EgtUnselectableAdd( m_SelGrpId)
      If bEnMod Then EgtEnableModified()
      Return ( m_SelGrpId <> GDB_ID.NULL)
   End Function

   Private Sub RemoveSelGroup()
      If m_SelGrpId = GDB_ID.NULL Then Return
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      EgtUnselectableRemove(m_SelGrpId)
      EgtErase(m_SelGrpId)
      m_SelGrpId = GDB_ID.NULL
      If bEnMod Then EgtEnableModified()
   End Sub

   Private Function CreateFacetOrChunkOutline( nId As Integer, nFac As Integer) As Integer
      VerifySelGroup()
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      Dim nCount As Integer
      Dim nFirstId As Integer = GDB_ID.NULL
      If EgtGetType( nId) = GDB_TY.SRF_MESH Then
         nFirstId = EgtExtractSurfTmFacetLoops( nId, nFac, m_SelGrpId, nCount)
      Else
         nFirstId = EgtExtractSurfFrChunkLoops( nId, nFac, m_SelGrpId, nCount)
      End If
      If nFirstId <> GDB_ID.NULL Then
         EgtSetColor( nFirstId, New Color3d( 255, 0,0))
         For nCrvId As Integer = nFirstId + 1 To nFirstId + nCount - 1
            EgtErase( nCrvId)
         Next
      End If
      If bEnMod Then EgtEnableModified()
      Return nFirstId
   End Function

End Module