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Python script for creating a movie

I have two sets of files (.vtu files) which are combined into two .pvd files. My script for creating a visualization is the following

Code:

from paraview.simple import *

import os



pth = "C:/Users/Jon Vegard/Dropbox/work/matlab/results/SS_RBC_BI/paraviewResults"



os.chdir(pth)

fileName = "SS_RBC_BI_0_1_exact"

inputFilename = "%s/%s_solid.pvd" % (pth,fileName)

reader = OpenDataFile(inputFilename)

wrp = WarpByVector(reader)

wrp.ScaleFactor = 4e9



Show(wrp)

Render()



inputFilename = "%s/%s_outer.pvd" % (pth,fileName)

reader = OpenDataFile(inputFilename)

clp = Clip(reader)

clp.ClipType.Normal = [0, -1, 0]

clp.ClipType.Origin = [0, 0.0001, 0] 

wrp2 = WarpByVector(clp)

wrp2.ScaleFactor = 4e9



Show(wrp2)

Render()



c = GetActiveCamera()

c.SetPosition(-17.87, 16.15, 19.31)

outputFilename = "%s/%s.avi" % (pth,fileName)

AnimateReader(reader, filename=outputFilename)



outputFilename = "%s/%s.png" % (pth,fileName)

WriteImage(outputFilename)

However, the scale factors for wrp and wrp2 are not updated, how do I fix this? (I tried wrp.UpdatePipeline())

Also, how do switch on one of the scalar fields? And how do I change the frame rate?

I found some nasty work arounds to two of the problems given below

Code:

from paraview.simple import *

import os



pth = "C:/Users/Jon Vegard/Dropbox/work/matlab/results/SS_RBC_BI/paraviewResults"



os.chdir(pth)

fileName = "SS_RBC_BI_0_1_exact"



# set up the camera        

view = GetRenderView()

view.CameraPosition        = [-28.46194145575746, 32.3037816038933, 29.71970873799418]        

view.CameraFocalPoint        = [0.20237148287731366, -0.26241365028257724, -0.5087481391252592]        

view.CameraViewUp        = [0.4079595183634798, 0.7876489187391945, -0.4617122612467806] 

#view.Background        = [1, 1, 1]        # white        background



##########################################################

# Create object 1

inputFilename1 = "%s/%s_solid.pvd" % (pth,fileName)



reader1 = OpenDataFile(inputFilename1)

clp1 = Clip(reader1)

clp1.ClipType.Normal = [0, -1, 0]

clp1.ClipType.Origin = [0, 6, 0] 

test1 = Show(clp1)

test1.Representation = 'Surface'

test1.ColorArrayName = 'Stress rr'



wrp1 = WarpByVector(clp1)

wrp1.ScaleFactor = 4e9

Show(wrp1)

Hide(clp1)



##########################################################

# Create object 2

inputFilename2 = "%s/%s_outer.pvd" % (pth,fileName)



reader2 = OpenDataFile(inputFilename2)

clp2 = Clip(reader2)

clp2.ClipType.Normal = [0, -1, 0]

clp2.ClipType.Origin = [0, 0.0001, 0] 

test2 = Show(clp2)

test2.Representation = 'Surface'

test2.ColorArrayName = 'Scalar field'



wrp2 = WarpByVector(clp2)

wrp2.ScaleFactor = 4e9

Show(wrp2)

Hide(clp2)



Render()





##########################################################

# Create movie

outputFilename = "%s/%s.avi" % (pth,fileName)

scene = servermanager.animation.AnimationScene()

scene.FramesPerTimestep=1

scene.Duration=2

scene.NumberOfFrames = 30

#test3 = AnimationSceneImageWriter()

#test3.FileName = outputFilename

#test3.FrameRate = 0.01

WriteAnimation(outputFilename, Quality=2, FrameRate=15.0, FramesPerTimestep=1, NumberOfFrames = 30, FrameRange = [0, 29])



##########################################################

# Create picture

outputFilename = "%s/%s.png" % (pth,fileName)

WriteImage(outputFilename)

But NumberOfFrames is ignored in WriteAnimation(), how to fix this?