This looks interesting Roy. Thanks for the suggestion. Formatting looks crazy
on my phone, but I'll test it out on Monday morning when I'm back on the box.
Have a great weekend all.
Gerard.
Sydney, Australia.
On 13/03/2015, at 6:16 AM, Roy Nieterau <royniete...@gmail.com> wrote:
> Just to get geeky and not sure if it's any faster but here's another version.
> ;)
>
> import maya.cmds as mc
> import itertools
>
> def grouper(iterable, n, fillvalue=None):
> "Collect data into fixed-length chunks or blocks"
> # grouper('ABCDEFG', 3, 'x') --> ABC DEF Gxx
> args = [iter(iterable)] * n
> return itertools.izip_longest(fillvalue=fillvalue, *args)
>
> # search under node for nodes with attr that are of type in allowed_types
> root_node = 'rootNode'
> search_attr = 'testAttr'
> allowed_types = frozenset(['mesh'])
> valid_nodes = [node for node, type in
> grouper(mc.ls('*.{0}'.format(search_attr), long=True, recursive=True,
> showType=True, o=True), 2) if type in allowed_types and
> node.startswith(root_node)]
> mc.select(valid_nodes, r=1)
>
> Note that this version assumes root_node is actually a root node (so has no
> parent). If you want to allow it to have a parent then you wouldn't do
> node.startswith() but something like:
>
> import maya.cmds as mc
> import itertools
>
> def grouper(iterable, n, fillvalue=None):
> "Collect data into fixed-length chunks or blocks"
> # grouper('ABCDEFG', 3, 'x') --> ABC DEF Gxx
> args = [iter(iterable)] * n
> return itertools.izip_longest(fillvalue=fillvalue, *args)
>
> # search under node for nodes with attr that are of type in allowed_types
> root_node = 'rootNode'
> search_attr = 'testAttr'
> allowed_types = frozenset(['mesh'])
>
> root_node_as_parent = '{0}|'.format(root_node)
> valid_nodes = [node for node, type in
> grouper(mc.ls('*.{0}'.format(search_attr), long=True, recursive=True,
> showType=True, o=True), 2) if type in allowed_types and root_node_as_parent
> in node]
> mc.select(valid_nodes, r=1)
>
> Sometimes the fastest thing is limiting the amount of commands you run that
> actually rely on querying something from Maya so this could be fast. Could
> you provide a heavyweight test scene example? ;)
> Both these versions rely on a single maya command query.
> Let me know what kind of speeds you get from this. :D
>
> Cheers and /geekout,
> Roy
>
>
> On Thursday, March 12, 2015 at 4:01:51 AM UTC+1, GerardVOK wrote:
>>
>> Hey there Chris. Thanks for the code I'll take a gander. Fuel catchup was
>> great. Haven't seen any of the old team in quite some time.
>> Cheers.
>> G.
>>
>> On Thu, Mar 12, 2015 at 12:45 PM, Chris Gardner <chrisg....@gmail.com> wrote:
>>> hey gerard,
>>>
>>> nice to see you at the pub the other day :)
>>>
>>> here's some API code for looking for custom attrs called "tags" and then
>>> looking for a string inside that. it's a bunch faster than maya cmds. adapt
>>> as necessary. it's filtering on transform nodes currently, but you could
>>> change that for your node type you want to target.
>>>
>>> import time
>>> import maya.api.OpenMaya as om2
>>>
>>>
>>> def findByTag(inTag):
>>> coll = []
>>>
>>> sel = om2.MGlobal.getSelectionListByName('*')
>>> depFn = om2.MFnDependencyNode()
>>>
>>> xformType = om2.MTypeId(0x5846524d)
>>>
>>> for i in xrange(sel.length()):
>>> mObj = sel.getDependNode(i)
>>> depNode = depFn.setObject(mObj)
>>> if depNode.typeId == xformType:
>>> if depNode.hasAttribute('tags'):
>>> plug = depNode.findPlug("tags", False)
>>> result = plug.asString()
>>>
>>> if result:
>>> tags = result.split(',')
>>> if inTag in tags:
>>> coll.append(depNode.name())
>>> return coll
>>>
>>>
>>> ts = time.time()
>>> coll = findByTag('blah')
>>> te = time.time()
>>>
>>> print coll
>>> #cmds.select(coll)
>>>
>>> print 'api2 %2.4f sec' % (te - ts)
>>> print len(coll)
>>>
>>> cheers,
>>> chrisg
>>>
>>>
>>> On 12 March 2015 at 12:38, Gerard v <gera...@gmail.com> wrote:
>>>
>>>> Hi all.
>>>>
>>>> I am trying to determine the most efficient way to search for nodes
>>>> (transforms) of specified types (eg transform of a curve) under a
>>>> hierarchy (lets call it 'top_node') that have a specific custom (string)
>>>> attribute.
>>>> When potentially dealing with a large number of nodes speed becomes a
>>>> factor.
>>>
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