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const tradesToWaitFor = 5;
function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return [
parseInt(result[1], 16),
parseInt(result[2], 16),
parseInt(result[3], 16),
];
}
const colorPalette = [
"#28D2EE",
"#ED778E",
"#6557DC",
"#EEE386",
"#B55AA0",
];
// Use https://api.cryptowat.ch/markets/<exchange>
// or https://api.cryptowat.ch/pairs (for "all")
const markets = {
"kraken":[
{
name: "BTCUSD",
resource: "markets:87:trades",
},
{
name: "BTCEUR",
resource: "markets:86:trades",
},
{
name: "BTCEUR",
resource: "markets:96:trades",
},
{
name: "ETHEUR",
resource: "markets:97:trades",
},
{
name: "BCHUSD",
resource: "markets:146:trades",
},
],
"bitfinex":[
{
name: "BTCUSD",
resource: "markets:1:trades",
},
{
name: "ETHUSD",
resource: "markets:4:trades",
},
{
name: "BSVUSD",
resource: "markets:5558:trades",
},
{
name: "BTCEUR",
resource: "markets:415:trades",
},
{
name: "XRPUSD",
resource: "markets:25:trades",
},
],
"all": [
{
name: "BTCUSD",
resource: "instruments:9:trades",
},
{
name: "ETHUSD",
resource: "instruments:125:trades",
},
{
name: "LTCUSD",
resource: "instruments:138:trades",
},
{
name: "EOSUSD",
resource: "instruments:4:trades",
},
{
name: "XRPUSD",
resource: "instruments:160:trades",
},
],
};
const exchange = "all";
function fillMarketP() {
let marketsEl = document.getElementById("markets");
for (let i in markets[exchange]) {
let name = markets[exchange][i].name;
let color = colorPalette[i];
if (i > 0) marketsEl.innerHTML += "</br>";
marketsEl.innerHTML += `<strong style="color: ${color}; font-size: 2rem;">${name}</strong>`;
}
}
function run() {
document.getElementById("button").style.display = "none";
let progress = document.getElementById("progress");
progress.innerHTML = "Connecting to Cryptowat.ch...";
let canvas = document.getElementById("rainCanvas");
let rainCanvas = new RainCanvas(canvas);
let modalHidden = false;
for (let i in markets[exchange]) {
let seriesComposer = new SeriesComposer(
markets[exchange][i].resource,
rainCanvas,
hexToRgb(colorPalette[i]),
);
seriesComposer.cw.onconnect = () => {
progress.innerHTML = "Preloading a few trades before continuing.";
};
// wait for each series to rech tradesToWaitFor before letting it begin.
// Hide the modal when the first series is enabled.
seriesComposer.ontrades = (trades) => {
if (!modalHidden && seriesComposer.getTotalTrades() < tradesToWaitFor) {
progress.innerHTML += "."; // indicate that _something_ is happening
return;
}
if (!modalHidden) {
let modal = document.getElementById("tradingInRainModal");
modal.style.display = "none";
modalHidden = true;
}
seriesComposer.setEnabled(true);
seriesComposer.ontrades = undefined;
};
}
}
function autorun() {
loadMIDI();
}
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