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 CreateFacetNormal( 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 CreateTriaLoop( nId As Integer, nT As Integer) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      Dim nCrvId As Integer = EgtExtractSurfTmTriaLoop( nId, nT, m_AnaGrpId)
      EgtSetColor( nCrvId, New Color3d( 255, 255,0))
      If bEnMod Then EgtEnableModified()
      Return True
   End Function

   Function CreateTriaNormal( nId As Integer, nT 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 EgtSurfTmTriangleNormVersor( nId, nT, 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 CreateChunkNormal( nId As Integer, nChk 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 EgtSurfFrChunkCenter( nId, nChk, 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 CreateChunkLoops( nId As Integer, nChk 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 = EgtExtractSurfFrChunkLoops( nId, nChk, 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

   Function CreateSBzPointNormalAndTangents( nId As Integer, ptBez As Point3d, ByRef dU As Double, ByRef dV As Double) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()

      Dim bOk As Boolean = EgtSurfBezParamsFromPoint( nId, ptBez, m_AnaGrpId, dU, dV)

      If bEnMod Then EgtEnableModified()
      Return bOk
   End Function

   Function CreateSBzIsoParam( nId As Integer, ByRef dU As Double, ByRef dV As Double) As Boolean
      If m_AnaGrpId = GDB_ID.NULL Then Return False
      Dim bEnMod As Boolean = EgtGetEnableModified()
      EgtDisableModified()
      Dim nIdCrv As Integer = EgtSurfBezierGetCurveU( nId, dV, m_AnaGrpId)
      EgtSetColor( nIdCrv, New Color3d(128,128,255))
      Dim bOk As Boolean = nIdCrv <> GDB_ID.NULL
      nIdCrv = EgtSurfBezierGetCurveV( nId, dU, m_AnaGrpId)
      bOk = bOk And nIdCrv <> GDB_ID.NULL
      EgtSetColor( nIdCrv, New Color3d(255,128,128))

      If bEnMod Then EgtEnableModified()
      Return bOk
   End Function

End Module