Snippets relted to Paraview

parallel_proj.py

"""
Set projection to parallel in Paraview

In Paraview 4.3 the default is perspective projection. 
"""
camera = GetActiveCamera ()
camera. SetParallelProjection (True)

paraview_programmable_source.py

"""
Example of programmable source in Paraview for an image in 3D
"""

## This part needs to go in the first box
nptsx = 100
nptsy = 100
nptsz = 100
dx = 1.0
dy = 1.0
dz = 1.0
ido = self.GetOutput()
ido.SetDimensions(nptsx + 1, nptsy + 1, nptsz + 1)
ido.SetOrigin(-nptsx/2, -nptsy/2, -nptsz/2)
ido.SetSpacing(dx, dy, dz)
ido.SetExtent(0, nptsx, 0, nptsy, 0, nptsz)

## To include a dataset associated with the image
# ido.AllocateScalars(vtk.VTK_FLOAT,1)
# ca = vtk.vtkFloatArray()
# ca.SetName("Data_set") 
# ca.SetNumberOfComponents(1)
# ca.SetNumberOfTuples(nptsx*nptsy*nptsz)
 
# for i in range(0, nptsx*nptsy*nptsz):
    # ca.SetValue(i, i)

# #add the new array to the output
# ido.GetCellData().SetScalars(ca)

## This part needs to go in the second box
from paraview import util

nptsx = 100
nptsy = 100
nptsz = 100
dx = 1.0
dy = 1.0
dz = 1.0
util.SetOutputWholeExtent(self, [0, nptsx, 0, nptsy, 0, nptsz])