Imports EgtUILib

Module GeomCalc

   Public Function GetRegionOutLoop(nRegId As Integer, nDestGrpId As Integer) As Integer
      Dim nCount As Integer = 0
      Dim nOutId As Integer = EgtExtractSurfFrChunkLoops(nRegId, 0, nDestGrpId, nCount)
      If nOutId <> GDB_ID.NULL Then
         For nId As Integer = nOutId + 1 To nOutId + nCount - 1
            EgtErase(nId)
         Next
      End If
      Return nOutId
   End Function

   Public Function CreateSolidFromRegion(nRegId As Integer, vtExtr As Vector3d, nDestGrpId As Integer) As Integer
      Dim nOutId As Integer = GetRegionOutLoop(nRegId, nDestGrpId)
      If nOutId = GDB_ID.NULL Then Return GDB_ID.NULL
      Dim nSolId As Integer = EgtCreateSurfTmByRegionExtrusion(nDestGrpId, 1, {nOutId}, vtExtr,
                                                               100 * EPS_SMALL, GDB_RT.GLOB)
      EgtErase(nOutId)
      Return nSolId
   End Function

   Public Function GetMaxSideId(nPartId As Integer) As Integer
      Dim nId As Integer = EgtGetFirstInGroup(nPartId)
      Dim sName As String = String.Empty
      While nId <> GDB_ID.NULL
         EgtGetName(nId, sName)
         If sName = NAME_OUTLOOP Then
            Exit While
         End If
         nId = EgtGetNext(nId)
      End While
      Dim nIdMax As Integer = EgtGetFirstInGroup(nId)
      Dim nIdCurr As Integer = nIdMax
      Dim dLen As Double
      Dim dLenMax As Double
      EgtCurveLength(nIdMax, dLen)
      dLenMax = dLen
      nIdCurr = EgtGetNext(nIdCurr)
      While nIdCurr <> GDB_ID.NULL
         EgtCurveLength(nIdCurr, dLen)
         If dLen > dLenMax Then
            nIdMax = nIdCurr
         End If
         nIdCurr = EgtGetNext(nIdCurr)
      End While
      Return nIdMax
   End Function

   Friend Function UpdateSolidForDrip(nPartId As Integer) As Boolean
      ' se non ci sono lavorazioni da sotto nel pezzo si esce
      If EgtGetGroupObjs(EgtGetFirstNameInGroup(nPartId, NAME_DRIPCUT)) = 0 AndAlso
         EgtGetGroupObjs(EgtGetFirstNameInGroup(nPartId, NAME_UNDERDRILL)) = 0 Then Return True
      ' Recupero lo spessore del grezzo
      Dim dThick As Double = EstCalc.GetRawHeight()
      ' Recupero layer Regione
      Dim nGrpRegId As Integer = EgtGetFirstNameInGroup(nPartId, ConstMach.NAME_REGION)
      ' Elimino eventuale vecchio solido
      EgtErase(EgtGetFirstNameInGroup(nGrpRegId, NAME_DRIP_SOLID))
      ' Recupero la regione del pezzo
      Dim nRegId As Integer = EgtGetFirstInGroup(nGrpRegId)
      While nRegId <> GDB_ID.NULL
         If EgtGetType(nRegId) = GDB_TY.SRF_FRGN Then Exit While
         nRegId = EgtGetNext(nRegId)
      End While
      ' Ne derivo il solido di estrusione
      Dim nSolId As Integer = CreateSolidFromRegion(nRegId, -dThick * Vector3d.Z_AX(), nGrpRegId)
      EgtSetName(nSolId, NAME_DRIP_SOLID)
      EgtSetColor(nSolId, New Color3d(0, 255, 255, 25))
      EgtSetStatus(nSolId, GDB_ST.OFF)
      Return nSolId <> GDB_ID.NULL
   End Function

   Friend Function EraseSolidForDrip(nPartId As Integer) As Boolean
      ' Recupero layer Regione
      Dim nGrpRegId As Integer = EgtGetFirstNameInGroup(nPartId, ConstMach.NAME_REGION)
      ' Elimino eventuale vecchio solido
      EgtErase(EgtGetFirstNameInGroup(nGrpRegId, NAME_DRIP_SOLID))
      Return True
   End Function

   Friend Function GetPartArea(nPartId As Integer) As Double
      Dim nRegId As Integer = EgtGetFirstNameInGroup(nPartId, ConstMach.NAME_REGION)
      Dim nSurfId As Integer = EgtGetFirstInGroup(nRegId)
      While nSurfId <> GDB_ID.NULL And EgtGetType(nSurfId) <> GDB_TY.SRF_FRGN
         nSurfId = EgtGetNext(nSurfId)
      End While
      Dim dArea As Double = 0
      EgtSurfFrGrossArea(nSurfId, dArea)
      Return dArea
   End Function

   Public Function EgtGetPartCenter(nPartId As Integer, ByRef ptCenter As Point3d) As Boolean
      Dim nGrpRegId As Integer = EgtGetFirstNameInGroup(nPartId, ConstMach.NAME_REGION)
      Dim nRegId As Integer = EgtGetFirstInGroup(nGrpRegId)
      While nRegId <> GDB_ID.NULL
         If EgtGetType(nRegId) = GDB_TY.SRF_FRGN Then Exit While
         nRegId = EgtGetNext(nRegId)
      End While
      Return EgtCentroid(nRegId, GDB_ID.ROOT, ptCenter)
   End Function

   Public Function GetPointInTableRef(ByVal ptCenter As Point3d, ByRef ptTable As Point3d) As Point3d
      ' setto il riferimento del tavolo1 (passo l'indice della tavola e il punto su cui salvare l'informazione)
      If Not EgtGetTableRef(1, ptTable) Then Return Nothing
      Dim ptResult As New Point3d
      ptResult.x = ptCenter.x - ptTable.x
      ptResult.y = ptCenter.y - ptTable.y
      ptResult.z = ptCenter.z - ptTable.z
      Return ptResult
   End Function

   ' restituisce l'Id della regione del pezzo
   Public Function GetRegionFromPart(IdPart As Integer) As Integer
      Dim nRegId As Integer = EgtGetFirstNameInGroup(IdPart, ConstGen.NAME_REGION)
      If nRegId = GDB_ID.NULL Then
         Return -1
      End If
      ' Cerco prima regione nel layer
      Dim nId = EgtGetFirstInGroup(nRegId)
      While nId <> GDB_ID.NULL
         If EgtGetType(nId) = GDB_TY.SRF_FRGN Then
            Return nId
         End If
         nId = EgtGetNext(nId)
      End While
      Return -1
   End Function

End Module