I can create a new parameter with hou.Ramp((lin, lin), (0, 1), (2.5, 4.5))
and put it on the template in an a node.
but is there a way that I can link it?

Unfortunately, the only way to do it through scripting is via the opmultiparm hscript command. Use that and run it on a promoted ramp parameter (via the Operator Type Properties) to get an idea of the syntax that's needed.

I found a way to link then in an odd way, if the name of the node changes, this stop working since its a script.

in the callback script of the promoted ramp
ramp.set(promoted_ramp.evalAsRamp())
that way when the user move a key in the ramp runs the code and set the new parameters every time.

Hey guys sorry to revive this topic. I'm running into the same issue and i've tried what you were saying Edward and think I got the syntax right but its not working. It seems I'm missing something

as an example I have a geo1 node in /obj with two nulls, null1 and null2. I added a float ramp on each of them with the same name called parm

and then I try to run this in the textport :

this yields nothing like nothing happened. However if I run


if outputs :


I also tried creating a subnetwork with a null and a ramp and then promoting it from the subnetwork and its connected it works

I then run


It will output :


So then I tell myself ok then lets create another subnetwork with a null that has a ramp parameter called parm. Create a ramp parameter on the subnetwork also called parm and run the same thing as what it outputed just previously:

so I run


Nothing happens. I move and add stuff on the ramp on the subnet but the null ramp just ignores it

I check its connected by using



and it outputs



same as with the subnet which I manually promoted the ramp.

Is there another step I am missing to get this to work ? I feel I've tried everything you mentioned here and in other threads on odforce or anything I could find

Thanks for the help

pelos
ramp.set(promoted_ramp.evalAsRamp())

Hi there. Could you give me a small hip file example of that method?

Check out this hip file guys. That works really well.
You only have to fickle a bit with the 'ramp copier' for it to work.

Is there a way to have this 'constantly' being evaluated?

I don't want to set any callback script on the ramp that is being copied. Only on the ramp_copier hda.
I see there is a hou.ui.addEventLoopCallback(), but that seems more like a global function, rather than something that lives in the HDA, inside that parameter.

(also: I want to do this via a script and this "ramp_path_parameter", and not with opmultiparm)
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