ENH:factorized some terms in ComputePointId() and ComputeCellId()
ENH:factorized some terms in ComputePointId() and ComputeCellId()

ashray/VTK-EVM,ashray/VTK-EVM,candy7393/VTK,collects/VTK,mspark93/VTK,gram526/VTK,ashray/VTK-EVM,Wuteyan/VTK,Wuteyan/VTK,biddisco/VTK,Wuteyan/VTK,berendkleinhaneveld/VTK,spthaolt/VTK,jeffbaumes/jeffbaumes-vtk,aashish24/VTK-old,collects/VTK,aashish24/VTK-old,johnkit/vtk-dev,SimVascular/VTK,sgh/vtk,gram526/VTK,jeffbaumes/jeffbaumes-vtk,collects/VTK,naucoin/VTKSlicerWidgets,hendradarwin/VTK,demarle/VTK,gram526/VTK,sankhesh/VTK,sumedhasingla/VTK,gram526/VTK,candy7393/VTK,daviddoria/PointGraphsPhase1,spthaolt/VTK,gram526/VTK,spthaolt/VTK,biddisco/VTK,demarle/VTK,biddisco/VTK,Wuteyan/VTK,arnaudgelas/VTK,candy7393/VTK,jmerkow/VTK,sankhesh/VTK,SimVascular/VTK,mspark93/VTK,ashray/VTK-EVM,msmolens/VTK,SimVascular/VTK,keithroe/vtkoptix,sankhesh/VTK,msmolens/VTK,johnkit/vtk-dev,jmerkow/VTK,jmerkow/VTK,jmerkow/VTK,cjh1/VTK,keithroe/vtkoptix,cjh1/VTK,sgh/vtk,johnkit/vtk-dev,sumedhasingla/VTK,sgh/vtk,spthaolt/VTK,aashish24/VTK-old,biddisco/VTK,biddisco/VTK,johnkit/vtk-dev,sumedhasingla/VTK,candy7393/VTK,aashish24/VTK-old,candy7393/VTK,demarle/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,berendkleinhaneveld/VTK,msmolens/VTK,SimVascular/VTK,collects/VTK,naucoin/VTKSlicerWidgets,spthaolt/VTK,sumedhasingla/VTK,hendradarwin/VTK,arnaudgelas/VTK,Wuteyan/VTK,naucoin/VTKSlicerWidgets,hendradarwin/VTK,arnaudgelas/VTK,cjh1/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,collects/VTK,sankhesh/VTK,johnkit/vtk-dev,keithroe/vtkoptix,msmolens/VTK,arnaudgelas/VTK,hendradarwin/VTK,msmolens/VTK,keithroe/vtkoptix,keithroe/vtkoptix,johnkit/vtk-dev,mspark93/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,biddisco/VTK,hendradarwin/VTK,hendradarwin/VTK,daviddoria/PointGraphsPhase1,msmolens/VTK,cjh1/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,sgh/vtk,ashray/VTK-EVM,msmolens/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,hendradarwin/VTK,demarle/VTK,demarle/VTK,jmerkow/VTK,johnkit/vtk-dev,sgh/vtk,ashray/VTK-EVM,collects/VTK,SimVascular/VTK,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,sumedhasingla/VTK,spthaolt/VTK,candy7393/VTK,naucoin/VTKSlicerWidgets,msmolens/VTK,demarle/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,demarle/VTK,SimVascular/VTK,jeffbaumes/jeffbaumes-vtk,ashray/VTK-EVM,SimVascular/VTK,sgh/vtk,naucoin/VTKSlicerWidgets,aashish24/VTK-old,mspark93/VTK,Wuteyan/VTK,ashray/VTK-EVM,arnaudgelas/VTK,berendkleinhaneveld/VTK,Wuteyan/VTK,sankhesh/VTK,mspark93/VTK,daviddoria/PointGraphsPhase1,sankhesh/VTK,cjh1/VTK,mspark93/VTK,gram526/VTK,berendkleinhaneveld/VTK,biddisco/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,mspark93/VTK,SimVascular/VTK,spthaolt/VTK,demarle/VTK,jeffbaumes/jeffbaumes-vtk,sankhesh/VTK,cjh1/VTK,keithroe/vtkoptix,gram526/VTK,aashish24/VTK-old,jeffbaumes/jeffbaumes-vtk,mspark93/VTK