118 lines
2.3 KiB
Racket
118 lines
2.3 KiB
Racket
#lang racket
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(require rsc3 rhs/rhs)
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;; --- gui stuff
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(require "gui.rkt")
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; ------- end of gui stuff
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(define current-node-id 1000)
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(define (gen-node-id)
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(set! current-node-id (add1 current-node-id))
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current-node-id)
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(define (wave-instrument wave-func)
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(letc ([bus 0]
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[freq 440])
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(out bus (mul 0.2 (wave-func ar freq 0)))))
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(define sin-instrument
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(letc ([bus 0]
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[freq 440])
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;; TODO - remove slider
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(out bus (mul (signal-slider "amplitude" 100 800 200) (sin-osc ar freq 0)))))
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(define saw-instrument
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(letc ([bus 0]
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[freq 440])
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(out bus (mul 0.2 (saw ar freq)))))
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(define moog-instrument
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(letc ([bus 0]
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[freq 440])
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(out bus (moog-ff
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(mul (saw ar freq) 0.1)
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(mouse-y kr 200 30000 1 0.1) 3 0))))
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;; setup
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;; show osc messages on server
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(send-msg (dump-osc 1))
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(with-sc3 reset)
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(define perset-instrument-map
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`(("sin-inst" ,sin-instrument)
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("saw-inst" ,saw-instrument)
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("moog-inst" ,moog-instrument)))
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;; send synthdefs
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(map (lambda (pair)
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(with-sc3 (lambda (fd)
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(send-synth fd (first pair) (second pair)))))
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perset-instrument-map)
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(define (create-synth name node-id)
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(send-msg (s-new0 name node-id 1 1))
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; don't make sound upon creation
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(send-msg (n-run1 node-id 0))
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node-id)
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; === user instrument funcs ===
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(define (preset-instrument name)
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(let ([node-id (gen-node-id)])
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(create-synth name node-id)))
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(define (note-on inst freq track)
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(send-msg (n-set1 inst "freq" freq))
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(send-msg (n-set1 inst "bus" track))
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(send-msg (n-run1 inst 1)))
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(define (inst-on inst)
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(send-msg (n-run1 inst 1)))
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(define (inst-off inst)
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(send-msg (n-run1 inst 0)))
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(define (set-inst-param inst name val)
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(send-msg (n-set1 inst name val)))
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#|
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- to stop/run:
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(send-msg (n-run1 1001 1))
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|#
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;; ======== example useage ===========
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(define my-sin (preset-instrument "sin-inst"))
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(param-slider "change frequency" 300 1000 400
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(lambda (val)
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(set-inst-param my-sin "freq" val)))
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(param-check-box "synth on" #f
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(lambda (v)
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(if v
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(inst-on my-sin)
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(inst-off my-sin))))
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(show-gui)
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;; example:
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(sleep 0.5)
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; (note-on my-sin 500 1)
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; (note-off my-sin)
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