Make warping by vector work with mapped structures.
Make warping by vector work with mapped structures.

Change-Id: I02be7e6c1b9102a574c27a1a0a85543f47e68de6

berendkleinhaneveld/VTK,keithroe/vtkoptix,candy7393/VTK,SimVascular/VTK,mspark93/VTK,keithroe/vtkoptix,sumedhasingla/VTK,sankhesh/VTK,ashray/VTK-EVM,mspark93/VTK,sumedhasingla/VTK,demarle/VTK,gram526/VTK,mspark93/VTK,hendradarwin/VTK,msmolens/VTK,demarle/VTK,msmolens/VTK,keithroe/vtkoptix,candy7393/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,gram526/VTK,mspark93/VTK,msmolens/VTK,demarle/VTK,hendradarwin/VTK,johnkit/vtk-dev,sankhesh/VTK,msmolens/VTK,ashray/VTK-EVM,SimVascular/VTK,mspark93/VTK,johnkit/vtk-dev,demarle/VTK,demarle/VTK,gram526/VTK,jmerkow/VTK,ashray/VTK-EVM,ashray/VTK-EVM,candy7393/VTK,demarle/VTK,sumedhasingla/VTK,gram526/VTK,sankhesh/VTK,sankhesh/VTK,hendradarwin/VTK,SimVascular/VTK,johnkit/vtk-dev,keithroe/vtkoptix,biddisco/VTK,sumedhasingla/VTK,jmerkow/VTK,mspark93/VTK,jmerkow/VTK,candy7393/VTK,SimVascular/VTK,gram526/VTK,sankhesh/VTK,candy7393/VTK,sumedhasingla/VTK,jmerkow/VTK,biddisco/VTK,johnkit/vtk-dev,biddisco/VTK,biddisco/VTK,SimVascular/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,sumedhasingla/VTK,mspark93/VTK,ashray/VTK-EVM,msmolens/VTK,candy7393/VTK,gram526/VTK,keithroe/vtkoptix,keithroe/vtkoptix,mspark93/VTK,hendradarwin/VTK,sankhesh/VTK,msmolens/VTK,jmerkow/VTK,jmerkow/VTK,sumedhasingla/VTK,hendradarwin/VTK,demarle/VTK,gram526/VTK,biddisco/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,johnkit/vtk-dev,SimVascular/VTK,msmolens/VTK,biddisco/VTK,candy7393/VTK,hendradarwin/VTK,demarle/VTK,sankhesh/VTK,sumedhasingla/VTK,jmerkow/VTK,ashray/VTK-EVM,gram526/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,msmolens/VTK,keithroe/vtkoptix,johnkit/vtk-dev,jmerkow/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,biddisco/VTK,candy7393/VTK,sankhesh/VTK,ashray/VTK-EVM