#!/usr/bin/env python
import vtk
htg = vtk.vtkUniformHyperTreeGrid()
htg.Initialize()
scalarArray = vtk.vtkDoubleArray()
scalarArray.SetName('scalar')
scalarArray.SetNumberOfValues(0)
htg.GetPointData().AddArray(scalarArray)
htg.GetPointData().SetActiveScalars('scalar')
htg.SetDimensions([4, 3, 3])
htg.SetBranchFactor(2)
# Rectilinear grid coordinates
xValues = vtk.vtkDoubleArray()
xValues.SetNumberOfValues(4)
xValues.SetValue(0, -1)
xValues.SetValue(1, 0)
xValues.SetValue(2, 1)
xValues.SetValue(3, 2)
htg.SetXCoordinates(xValues);
yValues = vtk.vtkDoubleArray()
yValues.SetNumberOfValues(3)
yValues.SetValue(0, -1)
yValues.SetValue(1, 0)
yValues.SetValue(2, 1)
htg.SetYCoordinates(yValues);
#!/usr/bin/env python
import vtk
htg = vtk.vtkUniformHyperTreeGrid()
htg.Initialize()
scalarArray = vtk.vtkDoubleArray()
scalarArray.SetName('scalar')
scalarArray.SetNumberOfValues(0)
htg.GetPointData().AddArray(scalarArray)
htg.GetPointData().SetActiveScalars('scalar')
htg.SetDimensions([4, 3, 1])
htg.SetBranchFactor(2)
htg.SetOrigin([-1., -1., -2])
htg.SetGridScale([1., 1., 1.])
# Let's split the various trees
cursor = vtk.vtkHyperTreeGridNonOrientedCursor()
offsetIndex = 0
# ROOT CELL 0
htg.InitializeNonOrientedCursor(cursor, 0, True)
cursor.SetGlobalIndexStart(offsetIndex)
idx = cursor.GetGlobalNodeIndex()
scalarArray.InsertTuple1(idx, 10)
cursor.SubdivideLeaf()
# ROOT CELL 0/[0-3]