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Last active September 16, 2025 08:37
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Receiving OSC Type Tag "T", "F", and "N" in SuperCollider
Raw
00_supercollider_osc_t-f-n.md

Receiving OSC Type Tag "T", "F", and "N" in SuperCollider

screenshot of SuperCollider

In SuperCollider 3.13.0, for receiving OSC messages, simply using OSCdef seems to handle OSC Type Tags "T", "F", and "N" correctly.

When sending, I don't know if there is an easy way like sendtyped in Pure Data (if anyone knows, please let me know).

see also about Pure Data (Purr Data):
https://gist.github.com/cleemy-desu-wayo/9d314e448b9f0edffcb2ffa503c3e824

a simple sample for sending "T" or "F" or "N", client_python-osc_t-f-n.py, is available here:
https://gist.github.com/cleemy-desu-wayo/590a22d5fb4e3f813b06dcc2fef9ae77

Raw
supercollider_osc_t-f-n.scd
/*
* Receiving OSC Type Tag "T", "F", and "N" in SuperCollider
* written by cleemy desu wayo / Licensed under CC0 1.0
* 2025-09-16
* ----
* https://gist.github.com/cleemy-desu-wayo/ed47772c4e26841bb6ad17810c1953c1
*/
/*
* ==========================================================================
* simply print the received OSC messages
* ==========================================================================
*/
(
OSCdef(\osctest, { |...args| args.postln }, '/test', nil, 9002)
)
/*
* ==========================================================================
* check the internal handling of SuperCollider (which class it is), and
* do conditional branching
* ==========================================================================
*/
(
OSCdef(\osctest,
{ |args| case { args[1].class == True } { 'absolutely true'.postln }
{ args[1].class == False } { 'absolutely false'.postln }
{ args[1].class == Nil } { 'absolutely nil'.postln };
}, '/test', nil, 9002)
)
/*
* ==========================================================================
* play sawtooth wave (NOTE: requires doing "Boot Server" from menu)
* if OSC Type Tag is "T", 440Hz; if tag is "F", 220Hz; if tag is "N", 880Hz
* ==========================================================================
*/
(
var volume = 0.3;
var env = Env.perc(0.03, 0.9, 1, -4);
var play_saw = { |freq|
{
var envgen = EnvGen.kr(env);
Saw.ar(freq)!2 * volume * envgen
}.play;
};
OSCdef(\osctest,
{ |args| case { args[1].class == True } { 'absolutely true'.postln; play_saw.value(440) }
{ args[1].class == False } { 'absolutely false'.postln; play_saw.value(220) }
{ args[1].class == Nil } { 'absolutely nil'.postln; play_saw.value(880) };
}, '/test', nil, 9002);
play_saw.value(440);
)
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