Doesn't seem to be any easy way,
* nuke.sample doesn't take a view index (like most of the knobs), nor
OutputContext (like the knob's evaluate method)
* nuke.sample(..., "green.left", ...) doesn't work as I half-hoped
* Creating a temporary CurveTool doesn't work properly on a stereo image
(only creates one value, from the current view)
..but if you OneView before the CurveTool, it'll work:
def getpixel(node, x, y, viewname):
assert viewname in nuke.views()
# Get specified view
ov = nuke.nodes.OneView(inputs = [node])
ov['view'].setValue(viewname)
# Make CurveTool..
ct = nuke.nodes.CurveTool(inputs = [ov])
ct['operation'].setValue('Avg Intensities')
# ..for a one-pixel region
ct['ROI'].setValue(x, 0) # x
ct['ROI'].setValue(y, 1) # y
ct['ROI'].setValue(x+1, 2) # r
ct['ROI'].setValue(y+1, 3) # t
# Execute the CurveTool
nuke.execute(ct, nuke.frame(), nuke.frame())
# Get the RGB value
val = ct['intensitydata'].value()
# Clean up
nuke.delete(ct)
nuke.delete(ov)
return val
print getpixel(nuke.selectedNode(), 512, 512, 'left')
On 02/11/13 02:38, Steve Newbold wrote:
> Hi,
>
> What's the most straight forward way of sampling (node.sample()) a
> specific view. I can sample the view currently selected in the viewer
> but can't see an obvious way to choose which view I wish to sample.
> Must be something straight forward?
>
> Cheers,
> Steve
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--
ben dickson
2D TD | ben.dick...@rsp.com.au
rising sun pictures | www.rsp.com.au
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