Out of interest can you just use nuke.allNodes('Read') and see if they have an
output and same for ReadGeo?
Howard
> On 14 Feb 2016, at 11:33 pm, Ben Dickson <[email protected]> wrote:
>
> Your recursive tree walking is probably going over every possible combination
> of connections, when you only need to visit each node once (since once you
> have checked all upstream connections from one node, there's no need to check
> them again)
>
> This should be mostly equivalent to your "recursiveDependencies" method -
> mainly it is just quicker, but it also handles when a node is disabled (by
> only checking the primary pipe)
>
> def _get_upstream(starter, _visited=None):
> """Get upstream nodes, handling disabled nodes sensibly
> """
>
> if _visited is None:
> _visited = set()
>
> elif starter in _visited:
> # If a node is already visisted, it's inputs have already been
> # inspected, so, skip.
> return
>
> yield starter
>
> if ('disable' in starter.knobs()
> and starter['disable'].value()
> and not starter['disable'].hasExpression()
> ):
>
> # Disabled permenantly (non-expression),
> # only look at first input
> first_input = starter.input(0)
> if first_input is None:
> # Node has no inputs (e.g empty Group with zero inputs)
> return # done
> else:
> for n in _get_upstream(first_input, _visited=_visited):
> _visited.add(n)
> yield n
>
> else:
> # Regular node, look at all upstream nodes
> inputs = starter.dependencies(
> nuke.HIDDEN_INPUTS|nuke.INPUTS|nuke.EXPRESSIONS)
> for curinp in inputs:
> for n in _get_upstream(curinp, _visited=_visited):
> _visited.add(n)
> yield n
>
>
>> On 13/02/16 08:49, J Bills wrote:
>> This might not be the most efficient, but we have this in place as part
>> of a larger archive script, happy to share:
>>
>>
>>
>> import nuke
>> import os
>> import sys
>>
>>
>> def recursiveDependencies(n):
>> '''Given a node, find all upstream nodes. This works, but for moderately
>> complex nuke graphs it can take a long long time, eg 516 nodes found in
>> 1418 seconds'''
>> thisDependencies = set(n.dependencies())
>> if not thisDependencies:
>> return set()
>> dependencyDependencies = set()
>> for nn in thisDependencies:
>> dependencyDependencies.update(recursiveDependencies(nn))
>> return thisDependencies.union(dependencyDependencies)
>>
>> def findOutputs():
>> result = []
>> for n in nuke.allNodes():
>> if n.Class() in ["Write"]:
>> result.append(n)
>> return result
>>
>> def findInputsFromOutputs():
>> result = set()
>> for n in findOutputs():
>> dependencies = recursiveDependencies(n)
>> for dependent in dependencies:
>> if dependent.Class() in ['Read','ReadGeo']:
>> result.add(os.path.dirname(nuke.filename(dependent)))
>> return list(result)
>>
>> def printInputsFromOutputs():
>> print '\n'.join(findInputsFromOutputs())
>>
>> def findInputs():
>> result = set()
>> for n in nuke.allNodes():
>> if n.Class() in ["Read", "ReadGeo"]:
>> result.add(os.path.dirname(nuke.filename(n)))
>> result = list(result)
>> result.sort()
>> return result
>>
>> def printInputs():
>> print '\n'.join(findInputs())
>>
>>
>>
>>
>> On Thu, Feb 11, 2016 at 11:34 AM, Dan Stein
>> <[email protected] <mailto:[email protected]>>
>> wrote:
>>
>> For non-GUI you can load Nuke as a Python module.
>>
>>
>> http://docs.thefoundry.co.uk/nuke/80/pythondevguide/nuke_as_python_module.html
>>
>> Then just collect the Read and ReadGeo nodes however you would in
>> the GUI, nuke.allNodes('Read')... etc
>>
>> On Feb 11, 2016, at 10:52 AM, Gabor Hovanyi <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>>> for reads, you could use nukescripts.get_script_data() or
>>> nukescripts.get_reads()
>>>
>>> -g
>>>
>>> On Thu, Feb 11, 2016 at 10:26 AM, Gary Jaeger <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Is there a way, preferably in non-gui mode, to quickly
>>> generate a list of all read nodes, including geo, used in a
>>> script?
>>>
>>> Gary Jaeger // Core Studio
>>> 249 Princeton Avenue
>>> Half Moon Bay, CA 94019
>>> 650.728.7957 <tel:650.728.7957> (direct)
>>> 650.728.7060 <tel:650.728.7060> (main)
>>> http://corestudio.com <http://corestudio.com/>
>>>
>>>
>>> _______________________________________________
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>>>
>>>
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>>
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>>
>>
>>
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>
> --
> ben dickson
> 2D TD | [email protected]
> rising sun pictures | www.rsp.com.au
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