Custom JS functions

Community Usage questions
1

Hi!
I’m a new user of O-S-C, coming from TouchOSC, and it’s a massive improvement!

I did not find a way to define a utiliy JS function globally, so I could use it in any value/script property

  • custom module cannot export arbitrary function
  • “variable” types apparently cannot be used as functions library.
    e.g. { “foo”: function (v) {console.log(“bar”); } }

Did anyone already solved this somehow?

Regards,
Guillaume

1 Like
2

You can use the globals object to share things between scripts:

JS{{
globals.foo = function(){/*...*/}
}}
2 Likes
3

Hi, sorry to pollute this thread, but I'm not really an expert on JS.
I want to declare a function globally (for the template) so it can be called by any widget at anytime.
I'm doing a simple example to check if this works, 1 template with 2 Widgets:

Widget 1) script_1

In this one I define a global function

        "type": "script",
        "id": "script_1",
        "value": "globals.launchpadLedColorsA = function launchpadLedColorsA (velocityReceived) {
    var colorsArrayA = {
      \"1\": \"#990000\",
      \"2\": \"#dd0000\",
      \"3\": \"#ff0000\",
 }
    return colorsArrayA[velocityReceived] || \"#E0E0E0\";
}",

Widget 2) Text Widget

Thisone will call up the function of the script just to test it

        "type": "text",
        "value": "JS {{\n launchpadLedColorsA(2);}}",

Unfortunatelly seems that the function has not been parsed.
Any suggestions? Thanks

4

That script in the script's value has no reason to be executed, it's not in a JS{} block, either put it in a JS{} or in the script property (with event set to "once"). Make sure the script widget is parsed before any other widget that uses this function.

1 Like
5

Thank you, I have just placed the code in script property , and set event to once .
I have also placed the scriptWidget before the textWidget (so it get parsed the first?)
It won't work.
global-js-function.json (3.9 KB)

Thanks

6

There's a space between "JS" and "{", and you need to call globals.launchpadLedColorsA, not just launchpadLedColorsA. And you need a return statement in that block or else it won't return anything.

1 Like
7

Brilliance is just one word, but it could be changed with your name :grinning: Thanks so much

8

Strange behaviour in these 2 different examples.

f you work with this example, the call to the global function is not been recognised.

css-osc-listener.json (18.9 KB)

While in the nextone it looks like its the same behaviour, but as asoon as you change the fader's value it will kind of bang the function and will start working.

svg.json (11.8 KB)

Any ideas? Thanks

9

css-osc-listener.json (18.9 KB)

functionDefinitions.event should be set to "once" so that the script is executed when the session loads.

1 Like