// current weather conditions display /* globals WeatherDisplay, utils, STATUS, icons, UNITS, draw, navigation */ // eslint-disable-next-line no-unused-vars class CurrentWeather extends WeatherDisplay { constructor(navId,elemId,weatherParameters) { super(navId,elemId); // pre-load background image (returns promise) this.backgroundImage = utils.image.load('images/BackGround1_1.png'); // get the data this.getData(weatherParameters); } async getData(weatherParameters) { super.getData(); // Load the observations let observations, station; try { // station observations const observationsPromise = $.ajaxCORS({ type: 'GET', url: `https://api.weather.gov/stations/${weatherParameters.stationId}/observations`, data: { limit: 2, }, dataType: 'json', crossDomain: true, }); // station info const stationPromise = $.ajax({ type: 'GET', url: `https://api.weather.gov/stations/${weatherParameters.stationId}`, dataType: 'json', crossDomain: true, }); // wait for the promises to resolve [observations, station] = await Promise.all([observationsPromise, stationPromise]); // TODO: add retry for further stations if observations are unavailable } catch (e) { console.error('Unable to get current observations'); console.error(e); this.setStatus(STATUS.error); return; } // we only get here if there was no error above this.data = Object.assign({}, observations, {station: station}); this.drawCanvas(); } async drawCanvas () { super.drawCanvas(); const observations = this.data.features[0].properties; // values from api are provided in metric let Temperature = Math.round(observations.temperature.value); let DewPoint = Math.round(observations.dewpoint.value); let Ceiling = Math.round(observations.cloudLayers[0].base.value); let CeilingUnit = 'm.'; let Visibility = Math.round(observations.visibility.value/1000); let VisibilityUnit = ' km.'; let WindSpeed = Math.round(observations.windSpeed.value); const WindDirection = utils.calc.directionToNSEW(observations.windDirection.value); let Pressure = Math.round(observations.barometricPressure.value); let HeatIndex = Math.round(observations.heatIndex.value); let WindChill = Math.round(observations.windChill.value); let WindGust = Math.round(observations.windGust.value); let Humidity = Math.round(observations.relativeHumidity.value); // TODO: switch to larger icon const Icon = icons.getWeatherRegionalIconFromIconLink(observations.icon); let PressureDirection = ''; const TextConditions = observations.textDescription; // difference since last measurement (pascals, looking for difference of more than 150) const pressureDiff = (observations.barometricPressure.value - this.data.features[1].properties.barometricPressure.value); if (pressureDiff > 150) PressureDirection = 'R'; if (pressureDiff < -150) PressureDirection = 'F'; if (navigation.units() === UNITS.english) { Temperature = utils.units.celsiusToFahrenheit(Temperature); DewPoint = utils.units.celsiusToFahrenheit(DewPoint); Ceiling = Math.round(utils.units.metersToFeet(Ceiling)/100)*100; CeilingUnit = 'ft.'; Visibility = utils.units.kilometersToMiles(observations.visibility.value/1000); VisibilityUnit = ' mi.'; WindSpeed = utils.units.kphToMph(WindSpeed); Pressure = utils.units.pascalToInHg(Pressure); HeatIndex = utils.units.celsiusToFahrenheit(HeatIndex); WindChill = utils.units.celsiusToFahrenheit(WindChill); WindGust = utils.units.kphToMph(WindGust); } // get main icon this.gifs.push(await utils.image.superGifAsync({ src: Icon, loop_delay: 100, auto_play: true, canvas: this.canvas, x: 140, y: 175, max_width: 126, })); this.context.drawImage(await this.backgroundImage, 0, 0); draw.horizontalGradientSingle(this.context, 0, 30, 500, 90, draw.topColor1, draw.topColor2); draw.triangle(this.context, 'rgb(28, 10, 87)', 500, 30, 450, 90, 500, 90); draw.horizontalGradientSingle(this.context, 0, 90, 52, 399, draw.sideColor1, draw.sideColor2); draw.horizontalGradientSingle(this.context, 584, 90, 640, 399, draw.sideColor1, draw.sideColor2); draw.titleText(this.context, 'Current', 'Conditions'); draw.text(this.context, 'Star4000 Large', '24pt', '#FFFFFF', 170, 135, Temperature + String.fromCharCode(176), 2); let Conditions = observations.textDescription; if (TextConditions.length > 15) { Conditions = this.shortConditions(Conditions); } draw.text(this.context, 'Star4000 Extended', '24pt', '#FFFFFF', 195, 170, Conditions, 2, 'center'); draw.text(this.context, 'Star4000 Extended', '24pt', '#FFFFFF', 80, 330, 'Wind:', 2); draw.text(this.context, 'Star4000 Extended', '24pt', '#FFFFFF', 300, 330, WindDirection + ' ' + WindSpeed, 2, 'right'); if (WindGust) draw.text(this.context, 'Star4000 Extended', '24pt', '#FFFFFF', 80, 375, 'Gusts to ' + WindGust, 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFF00', 315, 120, this.data.station.properties.name.substr(0, 20), 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 165, 'Humidity:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 165, Humidity + '%', 2, 'right'); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 205, 'Dewpoint:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 205, DewPoint + String.fromCharCode(176), 2, 'right'); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 245, 'Ceiling:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 245, (Ceiling === '' ? 'Unlimited' : Ceiling + CeilingUnit), 2, 'right'); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 285, 'Visibility:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 285, Visibility + VisibilityUnit, 2, 'right'); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 325, 'Pressure:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 535, 325, Pressure, 2, 'right'); switch (PressureDirection) { case 'R': // Shadow draw.triangle(this.context, '#000000', 552, 302, 542, 312, 562, 312); draw.box(this.context, '#000000', 549, 312, 6, 15); // Border draw.triangle(this.context, '#000000', 550, 300, 540, 310, 560, 310); draw.box(this.context, '#000000', 547, 310, 6, 15); // Fill draw.triangle(this.context, '#FFFF00', 550, 301, 541, 309, 559, 309); draw.box(this.context, '#FFFF00', 548, 309, 4, 15); break; case 'F': // Shadow draw.triangle(this.context, '#000000', 552, 327, 542, 317, 562, 317); draw.box(this.context, '#000000', 549, 302, 6, 15); // Border draw.triangle(this.context, '#000000', 550, 325, 540, 315, 560, 315); draw.box(this.context, '#000000', 547, 300, 6, 15); // Fill draw.triangle(this.context, '#FFFF00', 550, 324, 541, 314, 559, 314); draw.box(this.context, '#FFFF00', 548, 301, 4, 15); break; default: } if (observations.heatIndex.value && HeatIndex !== Temperature) { draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 365, 'Heat Index:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 365, HeatIndex + String.fromCharCode(176), 2, 'right'); } else if (observations.windChill.value && WindChill !== '' && WindChill < Temperature) { draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 340, 365, 'Wind Chill:', 2); draw.text(this.context, 'Star4000 Large', 'bold 16pt', '#FFFFFF', 560, 365, WindChill + String.fromCharCode(176), 2, 'right'); } this.finishDraw(); this.setStatus(STATUS.loaded); } shortConditions(condition) { condition = condition.replace(/Light/g, 'L'); condition = condition.replace(/Heavy/g, 'H'); condition = condition.replace(/Partly/g, 'P'); condition = condition.replace(/Mostly/g, 'M'); condition = condition.replace(/Few/g, 'F'); condition = condition.replace(/Thunderstorm/g, 'T\'storm'); condition = condition.replace(/ in /g, ''); condition = condition.replace(/Vicinity/g, ''); condition = condition.replace(/ and /g, ' '); condition = condition.replace(/Freezing Rain/g, 'Frz Rn'); condition = condition.replace(/Freezing/g, 'Frz'); condition = condition.replace(/Unknown Precip/g, ''); condition = condition.replace(/L Snow Fog/g, 'L Snw/Fog'); condition = condition.replace(/ with /g, '/'); return condition; } }