118 lines
3.4 KiB
JavaScript
118 lines
3.4 KiB
JavaScript
// sounds
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class Sounder {
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constructor(args) {
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this.soundfile = args.soundfile;
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this.gain = args.gain; // (dB)
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this.latitude = args.location[0];
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this.longitude = args.location[1];
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this.spread = args.spread; // (deg)
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this.distmap = args.distmap;
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this.volmin = args.volmin; // (dB)
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this.ramptime = args.ramptime; // (seconds)
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}
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async load() {
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//start sound playback
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this.pv = new Tone.PanVol(0, -99).toDestination();
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this.snd = await AudioImport(this.soundfile); // NOTE: url with spaces didn't work here.
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// this.snd.connect(this.pv).start();
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this.snd.connect(this.pv);
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this.snd.loop = true;
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}
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update() {
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//
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//update sound pan/volume
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//
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// this.ang = getBearing(latitude, longitude, this.latitude, this.longitude); (deg)
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this.ang = getBearing(latitude, longitude, this.latitude, this.longitude); // (deg)
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this.angerr = (((this.ang - heading + 360) % 360) + 180) % 360 - 180;
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this.dist = getDistance(latitude, longitude, this.latitude, this.longitude); // (km)
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//
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this.distvol = map(this.dist, this.distmap[0], this.distmap[1], this.distmap[2], this.distmap[3], true); //(dB)
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// (from Pure Data patch "iamyou", [eqpan2~])
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// arg #1 (inlet #3): width:
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// -width*(1.5) ~ -width/2 -> left fade-in
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// -width/2 ~ width/2 -> cross fading
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// +width/2 ~ width*(1.5) -> right fade-out
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let panleft_start = this.spread * (-1.5);
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let panleft_end = this.spread * (-0.5);
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let panright_start = this.spread * (0.5);
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let panright_end = this.spread * (1.5);
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//left fade-in
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if (this.angerr > panleft_start && this.angerr < panleft_end) {
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this.pv.pan.value = -1; //left-full
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this.pv.volume.rampTo(this.distvol + this.gain + map(this.angerr, panleft_start, panleft_end, this.volmin, 0), this.ramptime)//cross fading; //(dB)
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} else if (this.angerr > panleft_end && this.angerr < panright_start) {
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this.pv.pan.value = map(this.angerr, panleft_end, panright_start, -1, 1); // crossfade
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this.pv.volume.rampTo(this.distvol + this.gain, this.ramptime)//right fade-out; //(dB)
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} else if (this.angerr > panright_start && this.angerr < panright_end) {
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this.pv.pan.value = 1; //right-full
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this.pv.volume.rampTo(this.distvol + this.gain + map(this.angerr, panright_start, panright_end, 0, this.volmin), this.ramptime)//slience; //(dB)
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} else {
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this.pv.volume.rampTo(-99, 10); //(dB)
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}
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}
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draw() {
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//draw sound location
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}
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}
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//
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class RadioSounder extends Sounder {
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//do nothing
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async load() {
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;
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}
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link(audiotag) {
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//start sound playback
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this.pv = new Tone.PanVol(0, -99).toDestination();
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let stream = Tone.context.createMediaElementSource(audiotag);
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this.snd = Tone.context.createGain();
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stream.connect(this.snd);
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console.log(stream);
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console.log(this.snd);
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console.log(this.pv);
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// this.snd.connect(this.pv.input.input); a hack ...
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this.snd.gain.value = 1;
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this.snd.connect(Tone.context.destination);
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}
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}
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//p5
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class Compass {
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constructor(size, colors) {
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this.size = size;
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this.colors = colors;
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this.heading = 0;
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}
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draw() {
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push();
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//
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scale(this.size);
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//
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translate(0.5, 0.5);
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//
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noStroke();
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//
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fill(this.colors[0]);
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circle(0, 0, 0.9);
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//
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fill(this.colors[1]);
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rotate(this.heading);
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quad(0.1, 0.2, 0, -0.4, -0.1, 0.2, 0, 0.1);
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//
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fill(this.colors[2]);
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circle(0, 0, 0.05);
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//
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pop();
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}
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}
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