Driver Expression: Bind "Visibility in Viewport" to self.parent > hide_render?

Question

I need to setup a driver to bind the "Visibility in Viewport" property of on object to its parent "hide_render" property.

I want to use an expression only. So I did lots of research and with my understanding the following expression should work, but it does not:

self.parent.hide_render

What am I doing wrong? Or am I missing something important?

self.hide_render works. So the prerequisites seem to be met (e.g. Enabling "Auto Run Python Script" and checkbox "Use Self")

Any help highly appreciated.

Crantisz · Accepted Answer · 2022-03-17 10:11:26Z

0

I think, you can access to direct properties here. Even if I tried python drivers:

import bpy

def parent_hidden(this):
    return this.parent.hide_render

bpy.app.driver_namespace["parent_hidden"] = parent_hidden

it didn't work correctly because Blender don't know then to update driver. So the only way to do this is that:

answered Mar 17, 2022 at 10:11

Crantisz

32.4k2 gold badges32 silver badges76 bronze badges

$\begingroup$ Thanks. So you are saying that it is not possible with a simple expression? Using Input Value works, but it always needs an absolute reference to a specific object. So I am looking for a expression solution... $\endgroup$
– simonwidjaja
Mar 17, 2022 at 10:36
$\begingroup$ You can use python driver, but it doesn't work properly $\endgroup$
– Crantisz
Mar 17, 2022 at 10:45

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