Use Ordered Menu to Change Parameters in Tool

[grafikzeug]

Hey folks,

I have a simple subnet that I use to reduce the poly-count of incoming geometry.

I have exposed some parameters and added  the ordered menu "Level of Detail". I want to be able to use this dropdown menu as a list of presets to fill in the three values into the fields below. I then want to be able to adjust the values via the sliders.

I'm sure there is a straightforward solution to this that I do not see.

 

Thanks a bunch for your help,

Felix

 

[grafikzeug]

Here's what I've tried. Not very successful ...

DropdownToChangeValues.hipnc

[Drughi]

You will need a python script for this to work. Do you want to make a hda or keep it a subnet?

[Drughi]

If you want to keep it a subnet. This is the way to go.

DropdownToChangeValues_fix.hipnc

In the sliders working geo

Edited December 10, 2019 by Drughi

[grafikzeug]

Hej Johannes,

vielen lieben Dank für deine Hilfe. Subset is fine. Your .hip does exactly what I need and gives me the opportunity to inspect how you did it.

Out of curiosity: why is it that the hda "forgets" the python code?

Much appreciated! Best,

Felix

Edited December 10, 2019 by grafikzeug

[anim]

I'd suggest creating an HDA as then you can have the script self contained and easily update the code for all the instances if you decide to do so (to for example update list of presets, or even read presets from external file , etc...)

parameter callback script:

hou.phm().loadPreset(kwargs)

HDA module:

def loadPreset(kwargs):
    presets = [{
                "voxelsize": 0.04,
                "voxeloffset": 1,
                "percentage": 50
               },
               {
                "voxelsize": 0.05,
                "voxeloffset": 1,
                "percentage": 30
               },
               {
                "voxelsize": 0.06,
                "voxeloffset": 1,
                "percentage": 10
               }
              ]

    node = kwargs['node']
    parm = kwargs['parm']
    i = parm.eval()
    node.setParms(presets[i])

 

DropdownToChangeValues_hda.hipnc

[Drughi]

34 minutes ago, anim said:

 

def loadPreset(kwargs):
    presets = [{
                "voxelsize": 0.04,
                "voxeloffset": 1,
                "percentage": 50
               },
               {
                "voxelsize": 0.05,
                "voxeloffset": 1,
                "percentage": 30
               },
               {
                "voxelsize": 0.06,
                "voxeloffset": 1,
                "percentage": 10
               }
              ]

    node = kwargs['node']
    parm = kwargs['parm']
    i = parm.eval()
    node.setParms(presets[i])

 

Ah, your right better to use a dictionary.

 

48 minutes ago, grafikzeug said:

Out of curiosity: why is it that the hda "forgets" the python code?

 

probably you need to add the script to the "code" paramterer defaults. But Tomas is right - better embed the code to a hda. The way I did it (this code parameter) is more of a hack to be able not to use a hda.

[grafikzeug]

Hey there!

Thank you Tomas, that looks very clean and direct though it sent my head spinning a lot, too.

It's perfectly useable for me, even without knowing anything about callback functions and global dictonaries. I can basically just skip everything I don't understand for now and adjust the values as needed, so thanks a lot for your time! This will make my work much easier and save me lots of tedious repititions.

Cheers!

Edited December 10, 2019 by grafikzeug