Forums Technical Discussion Get viewport selection with python callback.

Get viewport selection with python callback.

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aeaeaeae
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I've searching the web I can't seem to find a good solution this.

I want to use a callback script to get the string of the selection pattern from the viewport selection.

The code underneath, when called as a gives me infinite recursion errors, ending with Houdini crashing.

import toolutils
def getSelection():
	viewer = toolutils.sceneViewer()
	geo = viewer.selectGeometry()
	print geo.mergedSelectionString()

Any ideas?
Edited by aeaeaeae - July 8, 2016 10:12:05
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Enivob
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You may want to poke around on the scripting forum on OdForce. I have seen related topics come up a few times.
http://forums.odforce.net/topic/25237-python-returning-currently-selected-face-and-then-growing-the-selectio/#comment-147403 [forums.odforce.net]
Edited by Enivob - July 9, 2016 09:45:31
Using Houdini Indie 20.0
Windows 11 64GB Ryzen 16 core.
nVidia 3050RTX 8BG RAM.
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martinkindl83
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would this help?
Im using it as action button, that allows me to select geo in veiwport and output selected geo name

import soputils 
kwargs['geometrytype'] = (hou.geometryType.Primitives,) 
kwargs['inputindex'] = 0 
soputils.selectGroupParm(kwargs)
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aeaeaeae
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@martinkindl83 thanks that worked like a charm.

Full solution:

1. Go to Edit Parameter Interface,
2. Add a string parameter to you node.
3. Under the “Action Button” tab of you string parameter, past the code of martinkindl83.

import soputils 
kwargs['geometrytype'] = (hou.geometryType.Primitives,) 
kwargs['inputindex'] = 0 
soputils.selectGroupParm(kwargs)

4. There should now be a gear icon to the right of the new string field of your node.
Edited by aeaeaeae - July 12, 2016 05:31:29
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