+ for (vector<Speaker>::iterator i = _speakers.begin(); i != _speakers.end(); ++i) {
+ if ((*i).id == id) {
+ (*i).move (new_position);
+ update ();
+ break;
+ }
+ }
+}
+
+void
+Speakers::setup_default_speakers (uint32_t n)
+{
+ double o = 180.0;
+
+ /* default assignment of speaker position for n speakers */
+
+ assert (n>0);
+
+ switch (n) {
+ case 1:
+ add_speaker (AngularVector (o +0.0, 0.0));
+ break;
+
+ case 2:
+ add_speaker (AngularVector (o +60.0, 0.0));
+ add_speaker (AngularVector (o -60.0, 0.0));
+ break;
+
+ case 3:
+ add_speaker (AngularVector (o +60.0, 0.0));
+ add_speaker (AngularVector (o -60.0, 0.0));
+ add_speaker (AngularVector (o +180.0, 0.0));
+ break;
+ case 4:
+ /* 4.0 with regular spacing */
+ add_speaker (AngularVector (o +45.0, 0.0));
+ add_speaker (AngularVector (o -45.0, 0.0));
+ add_speaker (AngularVector (o +135.0, 0.0));
+ add_speaker (AngularVector (o -135.0, 0.0));
+ break;
+ case 5:
+ /* 5.0 with regular spacing */
+ add_speaker (AngularVector (o +72.0, 0.0));
+ add_speaker (AngularVector (o -72.0, 0.0));
+ add_speaker (AngularVector (o +0.0, 0.0));
+ add_speaker (AngularVector (o +144.0, 0.0));
+ add_speaker (AngularVector (o -144.0, 0.0));
+ break;
+ case 6:
+ /* 6.0 with regular spacing */
+ add_speaker (AngularVector (o +60.0, 0.0));
+ add_speaker (AngularVector (o -60.0, 0.0));
+ add_speaker (AngularVector (o +0.0, 0.0));
+ add_speaker (AngularVector (o +120.0, 0.0));
+ add_speaker (AngularVector (o -120.0, 0.0));
+ add_speaker (AngularVector (o +180.0, 0.0));
+ break;
+ case 7:
+ /* 7.0 with regular front spacing */
+ add_speaker (AngularVector (o +45.0, 0.0));
+ add_speaker (AngularVector (o -45.0, 0.0));
+ add_speaker (AngularVector (o +0.0, 0.0));
+ add_speaker (AngularVector (o +90.0, 0.0));
+ add_speaker (AngularVector (o -90.0, 0.0));
+ add_speaker (AngularVector (o +150.0, 0.0));
+ add_speaker (AngularVector (o -150.0, 0.0));
+ break;
+ case 10:
+ /* 5+4 with 45°/90° spacing */
+ add_speaker (AngularVector (o +45.0, 0.0));
+ add_speaker (AngularVector (o -45.0, 0.0));
+ add_speaker (AngularVector (o +0.0, 0.0));
+ add_speaker (AngularVector (o +135.0, 0.0));
+ add_speaker (AngularVector (o -135.0, 0.0));
+ add_speaker (AngularVector (o +45.0, 60.0));
+ add_speaker (AngularVector (o -45.0, 60.0));
+ add_speaker (AngularVector (o +135.0, 60.0));
+ add_speaker (AngularVector (o -135.0, 60.0));
+ add_speaker (AngularVector (o +0.0, 90.0));
+ break;
+
+ default:
+ {
+ double degree_step = 360.0 / n;
+ double deg;
+ uint32_t i;
+
+ /* even number of speakers? make sure the top two are either side of "top".
+ otherwise, just start at the "top" (90.0 degrees) and rotate around
+ */
+
+ if (n % 2) {
+ deg = 360 + o + degree_step;
+ } else {
+ deg = 360 + o;
+ }
+ for (i = 0; i < n; ++i, deg -= degree_step) {
+ add_speaker (AngularVector (fmod(deg, 360), 0.0));
+ }
+ }