ENH: Fixed an issue with Box position coordinates.
ENH: Fixed an issue with Box position coordinates.

world Box position should be PointType and not Vectortype as
TransformPoint() includes offset calculation while TransformVector
don't.
To position the output box correctly, we added the offset to the
boxCorner.

aylward/ITKTubeTK,KitwareMedical/TubeTK,thewtex/TubeTK,KitwareMedical/ITKTubeTK,aylward/ITKTubeTK,KitwareMedical/ITKTubeTK,cdeepakroy/TubeTK,thewtex/TubeTK,sumedhasingla/TubeTK,sumedhasingla/TubeTK,KitwareMedical/TubeTK,KitwareMedical/TubeTK,KitwareMedical/TubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,sumedhasingla/TubeTK,aylward/ITKTubeTK,cdeepakroy/TubeTK,cdeepakroy/TubeTK,thewtex/TubeTK,thewtex/TubeTK,aylward/ITKTubeTK,cdeepakroy/TubeTK,KitwareMedical/ITKTubeTK