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function SeriesComposer(resource, rainCanvas, color) {
this.rainCanvas = rainCanvas;
this.color = color;
this.priceDist = new Distributor(200);
this.volumeDist = new Distributor(200);
this.musicBox = new MusicBox(this.priceDist, this.volumeDist);
this.enabled = false;
this.setEnabled = (enabled) => this.enabled = enabled;
this.getEnabled = () => { return this.enabled; }
this.totalTrades = 0;
this.getTotalTrades = () => { return this.totalTrades; }
this.cw = new CW(resource);
this.cw.ontrades = (trades) => {
if (this.totalTrades > 0 && this.enabled) {
let priceVols = {}; // sum volumes by price, for deduplication
for (let i in trades) {
let price = trades[i].price, volume = trades[i].volume;
if (!priceVols[price]) priceVols[price] = 0;
priceVols[price] += volume;
}
trades = []; // overwrite trades with deduplicated ones.
for (let price in priceVols) {
let volume = priceVols[price];
let intensity = this.volumeDist.distribute(volume, 0, 1);
this.rainCanvas.newDrop({
x: this.priceDist.distribute(price, 0, 1),
y: Math.random(),
intensity: intensity,
color: this.color,
});
trades.push({price: price, volume: volume});
}
this.musicBox.playTrades(trades);
}
for (let i in trades) {
this.priceDist.add(trades[i].price);
this.volumeDist.add(trades[i].volume);
}
this.totalTrades += trades.length;
if (this.ontrades) this.ontrades(trades);
};
}
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