Forums Technical Discussion How to make a dropdown menu of all values of an attribute?

How to make a dropdown menu of all values of an attribute?

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raincole
Member
607 posts
Joined: Aug. 2019
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Character Blend Shapes Add SOP has this neat dropdown menu:



It has always been a mystery to me. The items in this dropdown menu seem to be updated along with the input geometry's name attribute. How could I make something similar for my own HDA?

I checked it's parameter interface, but surprisingly, there isn't a special tag or something:

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Screenshot 2023-12-22 175654.png (42.5 KB)

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tamte
Member
9111 posts
Joined: July 2007
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you can for example use this menu script to get menu out of unique values of primitive name attribute of first input geo:
menu = []
geo = kwargs['node'].inputGeometry(0)
if geo:
    attrib = geo.findPrimAttrib("name")
    if attrib:
        for name in attrib.strings():
            menu += [name, name]
return menu
Tomas Slancik
CG Supervisor
Framestore, NY
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