examples\hid\mouse-fm.ck
//-----------------------------------------------------------------------------
// name: mouse-fm.ck
// desc: uses first X/Y axes of a mouse to control modulation frequency
// and index of modulation for FM Synthesis
//
// note: select between mice/trackpads by specifying device number;
// to see a list of devices and their numbers, either...
// 1) view the Device Browser window in miniAudicle (select
// "Human Interface Devices" in the drop-down menu)
// OR 2) from the command line:
// > chuck --probe
//
// author: Spencer Salazar
//-----------------------------------------------------------------------------
// which mouse
0 => int device;
// get from command line
if( me.args() ) me.arg(0) => Std.atoi => device;
// modulator to carrier
SinOsc m => SinOsc c => Envelope e => dac;
// carrier frequency
220 => c.freq;
// modulator frequency
550 => m.freq;
// index of modulation
1000 => m.gain;
// phase modulation is FM synthesis (sync is 2)
2 => c.sync;
// attack
10::ms => e.duration;
.5 => e.gain;
// variables
int base;
float a0;
float a1;
float a2;
int count;
// start things
set( base, a0, a1, a2 );
// HID input and HID message
Hid hi;
HidMsg msg;
// try
if( !hi.openMouse( device ) ) me.exit();
<<< "mouse '" + hi.name() + "' ready...", "" >>>;
// infinite time loop
while( true )
{
// wait on event
hi => now;
// loop over messages
while( hi.recv( msg ) )
{
if( msg.isMouseMotion() )
{
msg.deltaX * .001 + a0 => a0;
//else if( msg.which == 1 ) msg.fdata => a1;
msg.deltaY * .001 + a1 => a1;
set( base, a0, a1, a2 );
}
else if( msg.isButtonDown() )
{
msg.which => base;
count++;
if( count == 1 ) e.keyOn();
set( base, a0, a1, a2 );
}
else if( msg.isButtonUp() )
{
msg.which => base;
count--;
if( !count ) e.keyOff();
}
}
}
// mapping function
fun void set( int base, float v0, float v1, float v2 )
{
// modulator frequency
( 500 + 5*base + ( 500 * v0) ) => m.freq;
// carrier frequency
( 220 + (220 * v2) ) => c.freq;
// index of modulation
( 1000 * (v1+1) ) => m.gain;
<<< "carrier:", c.freq(), "modulator:", m.freq(), "index:", m.gain() >>>;
}