Imports EgtUILib

Module Analyze

   Private m_AnaGrpId As Integer = GDB_ID.NULL
   
   Function CreateAnalyzeGroup() As Boolean
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      If m_AnaGrpId = GDB_ID.NULL Then
         m_AnaGrpId = EgtCreateGroup( GDB_ID.ROOT)
         EgtSetName( m_AnaGrpId, "$$ANALYZE")
         EgtSetLevel( m_AnaGrpId, GDB_LV.TEMP)
      Else
         EgtEmptyGroup( m_AnaGrpId)
      End If
      EgtUnselectableAdd( m_AnaGrpId)
      If bEnMod Then EgtEnableModified()
      Return ( m_AnaGrpId <> GDB_ID.NULL)
   End Function
   
   Function ClearAnalyzeGroup() As Boolean
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      EgtEmptyGroup( m_AnaGrpId)
      If bEnMod Then EgtEnableModified()
      Return ( m_AnaGrpId <> GDB_ID.NULL)
   End Function

   Function EraseAnalyzeGroup() As Boolean
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      EgtUnselectableRemove( m_AnaGrpId)
      EgtErase( m_AnaGrpId)
      m_AnaGrpId = GDB_ID.NULL
      If bEnMod Then EgtEnableModified()
      Return True
   End Function

   Function CreateNormal( nId As Integer, nFac As Integer) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      Dim ptC As Point3d
      Dim vtN As Vector3d
      If EgtSurfTmFacetCenter( nId, nFac, GDB_ID.ROOT, ptC, vtN) Then
         Dim nNormId As Integer = EgtCreateGeoVector( m_AnaGrpId, 50 * vtN, ptC, GDB_RT.GLOB)
         EgtSetColor( nNormId, New Color3d( 255, 0,0))
      End If
      If bEnMod Then EgtEnableModified()
      Return True
   End Function

   Function CreateFacetLoops( nId As Integer, nFac As Integer) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      Dim nCount As Integer
      Dim nFirstId As Integer = EgtExtractSurfTmFacetLoops( nId, nFac, m_AnaGrpId, nCount)
      If nFirstId <> GDB_ID.NULL Then
         For nCrvId As Integer = nFirstId To nFirstId + nCount - 1
            EgtSetColor( nCrvId, New Color3d( 255, 0,0))
         Next
      End If
      If bEnMod Then EgtEnableModified()
      Return True
   End Function

   Function CreateCurveCompoPntNbrs( nId As Integer) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      'Riferimento della griglia corrente
      Dim refGrid As Frame3d = EgtGetGridFrame()
      'Nuovo riferimento griglia con Z come versore estrusione della curva
      Dim vtExtr As Vector3d : EgtCurveExtrusion( nId, vtExtr)
      If Not vtExtr.IsSmall() Then
         Dim refCrv As New Frame3d : refCrv.Setup( EgtGetGridOrigin(), vtExtr)
         EgtSetGridFrame( refCrv)
      End If
      'Recupero il numero di curve semplici
      Dim dStart, dEnd As Double
      EgtCurveDomain( nId, dStart, dEnd)
      Dim nCount As Integer = CInt( dEnd - dStart) - 1
      ' Ciclo sulle curve semplici
      For i As Integer = 0 To nCount
         'Scrivo il punto iniziale di ogni curva componente
         Dim ptS As Point3d
         EgtAtParamPoint( nId, i, GDB_ID.GRID, ptS)
         Dim nPntId As Integer = EgtCreateGeoPoint( m_AnaGrpId, ptS, GDB_RT.GRID)
         EgtSetColor( nPntId, New Color3d( 255, 0,0))
         'Scrivo il numero identificativo di ogni curva componente
         Dim ptP As Point3d
         EgtAtParamPoint( nId, i + 0.5, GDB_ID.GRID, ptP)
         Dim dLen As Double = 2 * Point3d.Dist( ptS, ptP)
         Dim dH As Double = Math.Min( 0.25 * dLen, 10)
         Dim nTxtId As Integer = EgtCreateTextAdv( m_AnaGrpId, ptP, 0, i.ToString(), "", 100, False, dH, 1, 0, INS_POS.MC, GDB_RT.GRID)
         EgtSetColor( nTxtId, New Color3d( 255, 0,0))
      Next
      'Se curva aperta aggiungo il punto finale
      If Not EgtCurveIsClosed( nId) Then
         Dim ptE As Point3d
         EgtEndPoint( nId, GDB_ID.GRID, ptE)
         Dim nPntId As Integer = EgtCreateGeoPoint( m_AnaGrpId, ptE, GDB_RT.GRID)
         EgtSetColor( nPntId, New Color3d( 255, 0,0))
      End If
      'Reimposto il riferimento originale alla griglia
      EgtSetGridFrame( refGrid)
      If bEnMod Then EgtEnableModified()
      Return True
   End Function

End Module