Alright, here’s a quick and slightly dirty take on using regexps that works for
pasted text data. I didn’t take the time to implement proper value rescaling
and translation into Nuke image coordinates; all keys are just set straight
from the raw values from AE.
Again, I would still advocate for a regexp-free approach to this, but hope it
helps somehow.
-Nathan
From: Nathan Rusch
Sent: Monday, June 25, 2012 11:27 AM
To: Nuke Python discussion
Subject: Re: [Nuke-python] AE Transform to Nuke
Without having taken a really close look at the structure of your function yet,
here are a couple immediate things to try:
1) Split your data into lines before you process it.
2) Recompiling your regex objects inside a loop is pretty inefficient. The
point of compiling regexps is so they can be reused multiple times, and you
typically just want to compile them all one time each at highest level that
makes sense, which in this case would probably be the module level.
3) Rather than explicitly matching tab characters, just use the \s token, which
will match any kind of whitespace. This goes hand in hand with initially
splitting your data into lines, since it will prevent your regexps from
accidentally matching across multiple lines.
I’ll take a closer look after work.
-Nathan
From: Ron Ganbar
Sent: Monday, June 25, 2012 11:15 AM
To: Nuke Python discussion
Subject: Re: [Nuke-python] AE Transform to Nuke
Hi Wouter,
I tried this kinda thing for the regex strings:
regex =
re.compile('\\t+([-+]?\d+\.?\d*)\\t+([-+]?\d+\.?\d*)\\t+([-+]?\d+\.?\d*)\\t+([-+]?\d+\.?\d*)\\t+')
Didn't help (though testing the string in pythonregex.com does show results).
If I did it wrong I'd love to know. Any other ideas welcome too.
Thanks!
Ron Ganbar
email: [email protected]
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
On 25 June 2012 21:05, Ron Ganbar <[email protected]> wrote:
Hi Wouter,
thanks. That's something I haven't tried.
I'll have a look.
Ron Ganbar
email: [email protected]
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
On 25 June 2012 20:15, Wouter Klouwen <[email protected]> wrote:
On 19/06/2012 08:28, Ron Ganbar wrote:
The weird thing is that the code I have works perfectly when reading the
text from a text file, just not when reading from paste. Really annoying
to start and write it again from scratch. Plus, I would love to have
learned from this script something useful about re.
Any chance you can have another look?
Your regexps look very strict. I would suggest to be more permissive in the
amount and kind of whitespacing you allow between numbers.
I would suggest:
[:blank:]+ instead of \t
Or if the Python regexps don't support he POSIX character classes, just [
\t]+.
It's entirely possible that you're getting spaces in the pasted data
instead of the tabs read from file.
HTH,
Wouter
--
Wouter Klouwen, Software Engineer
The Foundry, 6th Floor, Comms Building, 48 Leicester Sq, London WC2H LT
Tel: +442079686828 • Fax: +4420 79308906 • thefoundry.co.uk
The Foundry Visionmongers Ltd • Reg.d in England and Wales No: 4642027
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import re
import nuke
ATTR_RE = re.compile('(Position|Rotation|Scale)')
AE_TO_NUKE_ATTR = {'Position': ('translate', 2),
'Rotation': ('rotate', 1),
'Scale': ('scale', 2)}
KEY_RE = re.compile(r'\s([-+]?\d+\.?\d*)')
def aeTransform(rawText):
lines = rawText.splitlines()
keys = {}
srcW = srcH = None
for i, line in enumerate(iter(lines)):
if line.startswith('Transform'):
match = ATTR_RE.search(line)
if not match:
print 'Unrecognized Transform block:', line
continue
attrKeys = []
subIndex = i + 2
while True:
keyLine = lines[subIndex]
if not keyLine:
break
attrKeys.append([float (k) for k in KEY_RE.findall(keyLine)])
subIndex += 1
keys[match.group(0)] = attrKeys
elif srcW is None and 'Source Width' in line:
srwW = float(line.split()[-1])
elif srcH is None and 'Source Height' in line:
srcH = float(line.split()[-1])
if not keys:
return
xf = nuke.createNode('Transform', inpanel=False)
for attrName, keyList in keys.iteritems():
knobName, size = AE_TO_NUKE_ATTR[attrName]
knob = xf[knobName]
knob.setAnimated()
for keyData in keyList:
frame = keyData[0]
values = keyData[1:]
for i in range(size):
knob.setValueAt(values[i], frame, i)
nuke.show(xf)
return True
def dropAEData(mimeType, text):
if text.startswith('Adobe After Effects') and 'Transform' in text:
return aeTransform(text)
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