I originally had that roto inside a group, (like a gizmo) and wanted to
give the control of the motion blur to the group's custom knobs. But I
can't seem to link it.
I know it's not a knob you can animate, but other knobs that can't be
animated either are linking fine.
If you're curious about what I was trying to achieve, I wrote a tutorial
about it here:
http://erwanleroy.com/nuke-tool-rounded-rectangle-tutorial/
Thanks
Hi Erwan,
It's definitely a bug that Nuke crashes, however, you can't set an
expression on the motionblur_shutter_offset_type knob because it's not
possible to animate that knob. You can set a single value on the knob
instead:
r = nuke.toNode('Roto1')
k = r['motionblur_shutter_offset_type']
k.setValue('2')
print k.value()
Does that do what you want?
Thanks, Ben
On 26 Jul 2015, at 07:51, Erwan Leroy wrote:
Hello,
I was trying to expression link the motion_blur properties of a Roto
shape's motion blur and kept encountering crashes.
I simplified my setup to the extreme and the crash still happens.
Procedure:
Create a Roto node.
In it, create a random shape.
Select that shape.
In the script editor type:
r = nuke.toNode('Roto1')
k = r['feather_type']
k.setExpression('2')
This works and sets the enumeration pulldown to index2, which is smooth1
r = nuke.toNode('Roto1')
k = r['feather_type']
print k.value()
# Result: smooth1
Now if I try on motionblur_shutter_offset_type: (value first, to check I
can access the knob)
r = nuke.toNode('Roto1')
k = r['motionblur_shutter_offset_type']
print k.value()
# Result: centred
No problems so far.
Let's try setting the expression:
r = nuke.toNode('Roto1')
k = r['motionblur_shutter_offset_type']
print k.setExpression('2')
Crash
I'm on windows 8.1, using nuke 9.0v5
Am I doing anything wrong or is that a bug?
Thanks,
*Erwan* LEROY
www.erwanleroy.com
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