mirror of
https://github.com/processing/processing4.git
synced 2026-01-29 19:31:16 +01:00
78 lines
2.3 KiB
Plaintext
Executable File
78 lines
2.3 KiB
Plaintext
Executable File
/**
|
|
* Get Set Pan
|
|
* by Damien Di Fede.
|
|
*
|
|
* This sketch demonstrates how to use the <code>getPan</code> and
|
|
* <code>setPan</code> methods of a <code>Controller</code> object.
|
|
* The class used here is an <code>AudioOutput</code> but you can also
|
|
* get and set the pan of <code>AudioSample</code>, <code>AudioSnippet</code>,
|
|
* <code>AudioInput</code>, and <code>AudioPlayer</code> objects.
|
|
* <code>getPan</code> and <code>setPan</code> will get and set the pan
|
|
* of the <code>DataLine</code> that is being used for input or output,
|
|
* but only if that line has a pan control. A <code>DataLine</code> is
|
|
* a low-level JavaSound class that is used for sending audio to,
|
|
* or receiving audio from, the audio system. You will notice in this
|
|
* sketch that you will hear the pan changing (if it's available) but you
|
|
* will not see any difference in the waveform being drawn. The reason
|
|
* for this is that what you see in the output's sample buffers is what
|
|
* it sends to the audio system. The system makes the pan change after
|
|
* receiving the samples.
|
|
*/
|
|
|
|
import ddf.minim.*;
|
|
import ddf.minim.signals.*;
|
|
|
|
Minim minim;
|
|
AudioOutput out;
|
|
Oscillator osc;
|
|
WaveformRenderer waveform;
|
|
|
|
void setup()
|
|
{
|
|
size(512, 200);
|
|
|
|
minim = new Minim(this);
|
|
out = minim.getLineOut();
|
|
|
|
// see the example AudioOutput >> SawWaveSignal for more about this class
|
|
osc = new SawWave(100, 0.2, out.sampleRate());
|
|
// see the example Polyphonic >> addSignal for more about this
|
|
out.addSignal(osc);
|
|
|
|
waveform = new WaveformRenderer();
|
|
// see the example Recordable >> addListener for more about this
|
|
out.addListener(waveform);
|
|
|
|
textFont(createFont("SanSerif", 12));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
background(0);
|
|
// see waveform.pde for more about this
|
|
waveform.draw();
|
|
|
|
if ( out.hasControl(Controller.PAN) )
|
|
{
|
|
// map the mouse position to the range of the pan
|
|
float val = map(mouseX, 0, width, -1, 1);
|
|
// if a pan control is not available, this will do nothing
|
|
out.setPan(val);
|
|
// if a pan control is not available this will report zero
|
|
text("The current pan is " + out.getPan() + ".", 5, 20);
|
|
}
|
|
else
|
|
{
|
|
text("The output doesn't have a pan control.", 5, 20);
|
|
}
|
|
}
|
|
|
|
void stop()
|
|
{
|
|
// always close Minim audio classes when you are finished with them
|
|
out.close();
|
|
minim.stop();
|
|
|
|
super.stop();
|
|
}
|