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Hi,

I cannot find any information about setting the camera position through a script for a camera with parallel projection enabled. I tried to approach this through the tracing mechanism in paraview, but setting the camera position programatically keeps getting ignored when in parallel projection mode and I cannot track down futher why this happens or whether I do something wrong.

To reproduce I execute the following script in Paraview 5.8.0 (current release)

# trace generated using paraview version 5.8.0
#
# To ensure correct image size when batch processing, please search 
# for and uncomment the line `# renderView*.ViewSize = [*,*]`

#### import the simple module from the paraview
from paraview.simple import *
#### disable automatic camera reset on 'Show'
paraview.simple._DisableFirstRenderCameraReset()

# create a new 'Sphere'
sphere1 = Sphere()

# get active view
renderView1 = GetActiveViewOrCreate('RenderView')
# uncomment following to set a specific view size
# renderView1.ViewSize = [1372, 791]

# show data in view
sphere1Display = Show(sphere1, renderView1, 'GeometryRepresentation')

# trace defaults for the display properties.
sphere1Display.Representation = 'Surface'

# update the view to ensure updated data information
renderView1.Update()

# Properties modified on renderView1
renderView1.CameraParallelProjection = 1

#### saving camera placements for all active views

# current camera placement for renderView1
renderView1.CameraPosition = [0.0, 0.0, 1.0]

#### uncomment the following to render all views
# RenderAllViews()
SaveScreenshot("screenshot.png", renderView1)

gives me the following result.

Now, commenting renderView1.CameraParallelProjection = 1 allows me to freely move the camera by changing CameraPosition.