Only issue with the fromUserText approach is you need to know the frame range
in advance.
If you need to figure the range out yourself on the fly, something like the
code below will work. Note that it is written to be extra careful about the
possibility of other files existing in the same directory as the sequence in
question, even files with identical names but different extensions.
# 'newPath' is the new path you want to assign to the Read’s file knob
# 'node' is the Read node
import glob
import os
import re
import nukescripts
cleanPath = nukescripts.replaceHashes(newPath)
padRE = re.compile('%0(\d+)d')
padMatch = padRE.search(cleanPath)
if padMatch:
padSize = int(padMatch.group(1))
frameList = sorted(glob.iglob(padRE.sub('[0-9]' * padSize, cleanPath)))
first = os.path.splitext(frameList[0])[0][-padSize:]
last = os.path.splitext(frameList[-1])[0][-padSize:]
node['file'].fromUserText('%s %s-%s' % (cleanPath, first, last))
-Nathan
From: Ivan Busquets
Sent: Tuesday, January 03, 2012 2:20 PM
To: Nuke Python discussion
Subject: Re: [Nuke-python] How to update Read-Node frame ranges
Hi Vincent,
Use the .fromUserText() method to change the "file" knob, instead of .setValue()
This will trigger the same callbacks that are triggered when you change the
file manually, including setting the framerange and format knobs.
On Tue, Jan 3, 2012 at 2:16 PM, Vincent Langer <[email protected]>
wrote:
hi there,
i have a little script which changes the filepath of all the readnodes.
(update 3d renderpasses)
workes fine - but how can i update the readnode frameranges if these have
changed?
how can i get the first and last framenumber of a given sequence?
hope anyone can help
cheers,
vincent
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