Label horizontal swatches properly.
Label horizontal swatches properly.

Now both horizontal and vertical orientations are annotated
properly in `IndexedLookup` mode.

Change-Id: I4d2bcfecdd2b1bc8f72192a7f5706ac7167d4a67

johnkit/vtk-dev,SimVascular/VTK,mspark93/VTK,biddisco/VTK,sumedhasingla/VTK,SimVascular/VTK,gram526/VTK,candy7393/VTK,keithroe/vtkoptix,ashray/VTK-EVM,ashray/VTK-EVM,johnkit/vtk-dev,gram526/VTK,mspark93/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,demarle/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,aashish24/VTK-old,ashray/VTK-EVM,sumedhasingla/VTK,mspark93/VTK,demarle/VTK,sankhesh/VTK,johnkit/vtk-dev,ashray/VTK-EVM,mspark93/VTK,sumedhasingla/VTK,sankhesh/VTK,msmolens/VTK,sankhesh/VTK,candy7393/VTK,sumedhasingla/VTK,sankhesh/VTK,mspark93/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,sankhesh/VTK,keithroe/vtkoptix,candy7393/VTK,biddisco/VTK,biddisco/VTK,sumedhasingla/VTK,demarle/VTK,SimVascular/VTK,jmerkow/VTK,gram526/VTK,aashish24/VTK-old,gram526/VTK,johnkit/vtk-dev,aashish24/VTK-old,biddisco/VTK,SimVascular/VTK,ashray/VTK-EVM,keithroe/vtkoptix,candy7393/VTK,msmolens/VTK,collects/VTK,candy7393/VTK,collects/VTK,jmerkow/VTK,hendradarwin/VTK,SimVascular/VTK,candy7393/VTK,demarle/VTK,msmolens/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,sumedhasingla/VTK,sankhesh/VTK,ashray/VTK-EVM,collects/VTK,sumedhasingla/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,msmolens/VTK,demarle/VTK,msmolens/VTK,msmolens/VTK,gram526/VTK,sankhesh/VTK,demarle/VTK,mspark93/VTK,gram526/VTK,jmerkow/VTK,SimVascular/VTK,aashish24/VTK-old,candy7393/VTK,msmolens/VTK,ashray/VTK-EVM,ashray/VTK-EVM,keithroe/vtkoptix,sumedhasingla/VTK,aashish24/VTK-old,jmerkow/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,candy7393/VTK,hendradarwin/VTK,mspark93/VTK,keithroe/vtkoptix,demarle/VTK,biddisco/VTK,biddisco/VTK,msmolens/VTK,gram526/VTK,demarle/VTK,collects/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,jmerkow/VTK,gram526/VTK,SimVascular/VTK,collects/VTK,jmerkow/VTK,biddisco/VTK,johnkit/vtk-dev,collects/VTK,hendradarwin/VTK,keithroe/vtkoptix,johnkit/vtk-dev,mspark93/VTK,aashish24/VTK-old,SimVascular/VTK,keithroe/vtkoptix