Yeah, I've found this to be flaky too, or at least not consistent with other knobs.
As pixelcowboy was saying, the value() method of that matrix knob expects 2 indices (1 for the row, one for the column). But you're right, Frank, I think this should return a list with all values when no index is given, just like what you get from valueAt(). Also, toScript() doesn't seem to work correctly on them either (returns all 0s) As for setting the values, I've always resorted to iterating through them. :( Bug report? On Tue, Mar 8, 2011 at 4:59 PM, [email protected] < [email protected]> wrote: > cam['world_matrix'].array() > Works fine on the color matrix node, but doesn't seem to be doing the > right thing on the camera matrix knobs... > > > On Tue, Mar 8, 2011 at 4:54 PM, [email protected] > <[email protected]> wrote: > > I think you need to give it an index: > > print cam['world_matrix'].value(0,0) > > > > On Tue, Mar 8, 2011 at 4:45 PM, Frank Rueter <[email protected]> > wrote: > >> matrix knobs seem o behave in mysterious ways: > >> > >> this will give me a single float value: > >> cam = nuke.toNode('Camera4') > >> print cam['world_matrix'].value() > >> > >> > >> while this will give me all 16 values: > >> print cam['world_matrix'].valueAt(300) > >> > >> Also, this only assigns the first four values, not the whole thing: > >> > >> cam = nuke.toNode('Camera4') > >> newCam = nuke.toNode('Camera1') > >> newCam['useMatrix'].setValue( True ) > >> newCam['matrix'].setValue( cam['world_matrix'].valueAt(300) ) > >> > >> > >> Do I really have to manually iterate over the values to assign them or > has someone found a nicer way of doing this? > >> > >> Cheers, > >> frank_______________________________________________ > >> Nuke-python mailing list > >> [email protected] > >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > >> > > > _______________________________________________ > Nuke-python mailing list > [email protected] > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >
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