[vtkusers] howto Prevent a dataobject from updating?
jbiddiscombe at skippingmouse.co.uk
Sat May 19 00:43:31 EDT 2001
I'm using a vtkImageData with no scalars or other data as an input to a
This is nice because it's fast to set up and the "Points" are defined for
me by setting origin/spacing and extents.
Problem is that after I setup the spacing/origin etc, the probefilter wants
to call Update on the "input" even though its a fake input. Update does all
sorts of ScalarAllocation and other guff which is wasted (it also dies when
it tries to access the old scalar array to get the name)
How can I spoof the vtkImageData into thinking it doesn't need updating.
(like setting modified time to before the last execute time of the
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