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"""this is python equivalent of ./Wrapping/Tcl/vtktesting/backdrop.tcl
This script is used while running python tests translated from Tcl."""
import vtk
basePlane = None
baseMapper = None
base = None
backPlane = None
backMapper = None
back = None
leftPlane = None
leftMapper = None
left = None
def BuildBackdrop (minX, maxX, minY, maxY, minZ, maxZ, thickness):
global basePlane
global baseMapper
global base
global backPlane
global backMapper
global back
global left
global leftPlane
global leftMapper
if not basePlane:
basePlane = vtk.vtkCubeSource()
basePlane.SetCenter( (maxX + minX)/2.0, minY, (maxZ + minZ)/2.0)
basePlane.SetXLength(maxX-minX)
basePlane.SetYLength(thickness)
basePlane.SetZLength(maxZ - minZ)
if not baseMapper:
baseMapper = vtk.vtkPolyDataMapper()
baseMapper.SetInputConnection(basePlane.GetOutputPort())
if not base:
base = vtk.vtkActor()
base.SetMapper(baseMapper)
if not backPlane:
backPlane = vtk.vtkCubeSource()
backPlane.SetCenter( (maxX + minX)/2.0, (maxY + minY)/2.0, minZ)
backPlane.SetXLength(maxX-minX)
backPlane.SetYLength(maxY - minY)
backPlane.SetZLength(thickness)
if not backMapper:
backMapper = vtk.vtkPolyDataMapper()
backMapper.SetInputConnection(backPlane.GetOutputPort())
if not back:
back = vtk.vtkActor()
back.SetMapper(backMapper)
if not leftPlane:
leftPlane = vtk.vtkCubeSource()
leftPlane.SetCenter( minX, (maxY+minY)/2.0, (maxZ+minZ)/2.0)
leftPlane.SetXLength(thickness)
leftPlane.SetYLength(maxY-minY)
leftPlane.SetZLength(maxZ-minZ)
if not leftMapper:
leftMapper = vtk.vtkPolyDataMapper()
leftMapper.SetInputConnection(leftPlane.GetOutputPort())
if not left:
left = vtk.vtkActor()
left.SetMapper(leftMapper)
return [base, back, left]
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