5.21.2

.eslintrc

@@ -12,7 +12,8 @@
 		"RegionalCities": "readonly",
 		"StationInfo": "readonly",
 		"SunCalc": "readonly",
-		"NoSleep": "readonly"
+		"NoSleep": "readonly",
+		"OVERRIDES": "readonly"
 	},
 	"parserOptions": {
 		"ecmaVersion": "latest",

gulp/publish-frontend.mjs

@@ -14,9 +14,10 @@ import webpack from 'webpack-stream';
 import TerserPlugin from 'terser-webpack-plugin';
 import { readFile } from 'fs/promises';
 import file from 'gulp-file';
+import { CloudFrontClient, CreateInvalidationCommand } from '@aws-sdk/client-cloudfront';
+import OVERRIDES from '../src/overrides.mjs';
 
 // get cloudfront
-import { CloudFrontClient, CreateInvalidationCommand } from '@aws-sdk/client-cloudfront';
 import reader from '../src/playlist-reader.mjs';
 
 const clean = () => deleteAsync(['./dist/**/*', '!./dist/readme.txt']);
@@ -113,6 +114,7 @@ const compressHtml = async () => {
 		.pipe(ejs({
 			production: version,
 			version,
+			OVERRIDES,
 		}))
 		.pipe(rename({ extname: '.html' }))
 		.pipe(htmlmin({ collapseWhitespace: true }))

index.mjs

@@ -5,6 +5,7 @@ import corsPassThru from './cors/index.mjs';
 import radarPassThru from './cors/radar.mjs';
 import outlookPassThru from './cors/outlook.mjs';
 import playlist from './src/playlist.mjs';
+import OVERRIDES from './src/overrides.mjs';
 
 const app = express();
 const port = process.env.WS4KP_PORT ?? 8080;
@@ -57,6 +58,7 @@ const index = (req, res) => {
 	res.render('index', {
 		production: false,
 		version,
+		OVERRIDES,
 	});
 };
 

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "ws4kp",
-	"version": "5.20.2",
+	"version": "5.21.2",
 	"description": "Welcome to the WeatherStar 4000+ project page!",
 	"main": "index.mjs",
 	"type": "module",

server/scripts/index.mjs

@@ -61,7 +61,7 @@ const init = () => {
 		paramName: 'text',
 		params: {
 			f: 'json',
-			countryCode: 'USA', // 'USA,PRI,VIR,GUM,ASM',
+			countryCode: 'USA',
 			category,
 			maxSuggestions: 10,
 		},
@@ -82,7 +82,6 @@ const init = () => {
 
 	// attempt to parse the url parameters
 	const parsedParameters = parseQueryString();
-
 	const loadFromParsed = parsedParameters.latLonQuery && parsedParameters.latLon;
 
 	// Auto load the parsed parameters and fall back to the previous query

server/scripts/modules/almanac.mjs

@@ -1,5 +1,5 @@
 // display sun and moon data
-import { loadImg, preloadImg } from './utils/image.mjs';
+import { preloadImg } from './utils/image.mjs';
 import { DateTime } from '../vendor/auto/luxon.mjs';
 import STATUS from './status.mjs';
 import WeatherDisplay from './weatherdisplay.mjs';
@@ -9,9 +9,6 @@ class Almanac extends WeatherDisplay {
 	constructor(navId, elemId) {
 		super(navId, elemId, 'Almanac', true);
 
-		// pre-load background images (returns promises)
-		this.backgroundImage0 = loadImg('images/backgrounds/1.png');
-
 		// preload the moon images
 		preloadImg(imageName('Full'));
 		preloadImg(imageName('Last'));
@@ -122,10 +119,10 @@ class Almanac extends WeatherDisplay {
 		// sun and moon data
 		this.elem.querySelector('.day-1').innerHTML = Today.toLocaleString({ weekday: 'long' });
 		this.elem.querySelector('.day-2').innerHTML = Tomorrow.toLocaleString({ weekday: 'long' });
-		this.elem.querySelector('.rise-1').innerHTML = DateTime.fromJSDate(info.sun[0].sunrise).setZone(timeZone()).toLocaleString(DateTime.TIME_SIMPLE).toLowerCase();
-		this.elem.querySelector('.rise-2').innerHTML = DateTime.fromJSDate(info.sun[1].sunrise).setZone(timeZone()).toLocaleString(DateTime.TIME_SIMPLE).toLowerCase();
-		this.elem.querySelector('.set-1').innerHTML = DateTime.fromJSDate(info.sun[0].sunset).setZone(timeZone()).toLocaleString(DateTime.TIME_SIMPLE).toLowerCase();
-		this.elem.querySelector('.set-2').innerHTML = DateTime.fromJSDate(info.sun[1].sunset).setZone(timeZone()).toLocaleString(DateTime.TIME_SIMPLE).toLowerCase();
+		this.elem.querySelector('.rise-1').innerHTML = timeFormat(DateTime.fromJSDate(info.sun[0].sunrise));
+		this.elem.querySelector('.rise-2').innerHTML = timeFormat(DateTime.fromJSDate(info.sun[1].sunrise));
+		this.elem.querySelector('.set-1').innerHTML = timeFormat(DateTime.fromJSDate(info.sun[0].sunset));
+		this.elem.querySelector('.set-2').innerHTML = timeFormat(DateTime.fromJSDate(info.sun[1].sunset));
 
 		const days = info.moon.map((MoonPhase) => {
 			const fill = {};
@@ -171,6 +168,8 @@ const imageName = (type) => {
 	}
 };
 
+const timeFormat = (dt) => dt.setZone(timeZone()).toLocaleString(DateTime.TIME_SIMPLE).toLowerCase();
+
 // register display
 const display = new Almanac(9, 'almanac');
 registerDisplay(display);

server/scripts/modules/autocomplete.mjs

@@ -3,43 +3,24 @@ import { json } from './utils/fetch.mjs';
 
 const KEYS = {
 	ESC: 27,
-	TAB: 9,
-	RETURN: 13,
-	LEFT: 37,
 	UP: 38,
-	RIGHT: 39,
 	DOWN: 40,
 	ENTER: 13,
 };
 
 const DEFAULT_OPTIONS = {
-	autoSelectFirst: false,
 	serviceUrl: null,
-	lookup: null,
-	onSelect: () => { },
-	onHint: null,
-	width: 'auto',
 	minChars: 3,
 	maxHeight: 300,
 	deferRequestBy: 0,
 	params: {},
-	delimiter: null,
 	zIndex: 9999,
 	type: 'GET',
-	noCache: false,
-	preserveInput: false,
 	containerClass: 'autocomplete-suggestions',
-	tabDisabled: false,
-	dataType: 'text',
-	currentRequest: null,
-	triggerSelectOnValidInput: true,
-	preventBadQueries: true,
 	paramName: 'query',
 	transformResult: (a) => a,
 	showNoSuggestionNotice: false,
 	noSuggestionNotice: 'No results',
-	orientation: 'bottom',
-	forceFixPosition: false,
 };
 
 const escapeRegExChars = (string) => string.replace(/[/\-\\^$*+?.()|[\]{}]/g, '\\$&');

server/scripts/modules/currentweather.mjs

@@ -1,6 +1,6 @@
 // current weather conditions display
 import STATUS from './status.mjs';
-import { loadImg, preloadImg } from './utils/image.mjs';
+import { preloadImg } from './utils/image.mjs';
 import { json } from './utils/fetch.mjs';
 import { directionToNSEW } from './utils/calc.mjs';
 import { locationCleanup } from './utils/string.mjs';
@@ -17,8 +17,6 @@ const skipStations = ['U', 'C', 'H', 'W', 'Y', 'T', 'S', 'M', 'O', 'L', 'A', 'F'
 class CurrentWeather extends WeatherDisplay {
 	constructor(navId, elemId) {
 		super(navId, elemId, 'Current Conditions', true);
-		// pre-load background image (returns promise)
-		this.backgroundImage = loadImg('images/backgrounds/1.png');
 	}
 
 	async getData(weatherParameters, refresh) {

server/scripts/modules/extendedforecast.mjs

@@ -59,11 +59,10 @@ class ExtendedForecast extends WeatherDisplay {
 				date: Day.dayName,
 			};
 
-			const { low } = Day;
+			const { low, high } = Day;
 			if (low !== undefined) {
 				fill['value-lo'] = Math.round(low);
 			}
-			const { high } = Day;
 			fill['value-hi'] = Math.round(high);
 
 			// return the filled template
@@ -121,17 +120,17 @@ const parse = (fullForecast) => {
 	return forecast;
 };
 
+const regexList = [
+	[/ and /gi, ' '],
+	[/slight /gi, ''],
+	[/chance /gi, ''],
+	[/very /gi, ''],
+	[/patchy /gi, ''],
+	[/areas /gi, ''],
+	[/dense /gi, ''],
+	[/Thunderstorm/g, 'T\'Storm'],
+];
 const shortenExtendedForecastText = (long) => {
-	const regexList = [
-		[/ and /gi, ' '],
-		[/slight /gi, ''],
-		[/chance /gi, ''],
-		[/very /gi, ''],
-		[/patchy /gi, ''],
-		[/areas /gi, ''],
-		[/dense /gi, ''],
-		[/Thunderstorm/g, 'T\'Storm'],
-	];
 	// run all regexes
 	const short = regexList.reduce((working, [regex, replace]) => working.replace(regex, replace), long);
 

server/scripts/modules/hazards.mjs

@@ -39,9 +39,9 @@ class Hazards extends WeatherDisplay {
 			// get the forecast
 			const url = new URL('https://api.weather.gov/alerts/active');
 			url.searchParams.append('point', `${this.weatherParameters.latitude},${this.weatherParameters.longitude}`);
-			url.searchParams.append('limit', 5);
 			const alerts = await json(url, { retryCount: 3, stillWaiting: () => this.stillWaiting() });
-			const unsortedAlerts = alerts.features ?? [];
+			const allUnsortedAlerts = alerts.features ?? [];
+			const unsortedAlerts = allUnsortedAlerts.slice(0, 5);
 			const hasImmediate = unsortedAlerts.reduce((acc, hazard) => acc || hazard.properties.urgency === 'Immediate', false);
 			const sortedAlerts = unsortedAlerts.sort((a, b) => (calcSeverity(b.properties.severity, b.properties.event)) - (calcSeverity(a.properties.severity, a.properties.event)));
 			const filteredAlerts = sortedAlerts.filter((hazard) => hazard.properties.severity !== 'Unknown' && (!hasImmediate || (hazard.properties.urgency === 'Immediate')));
@@ -50,7 +50,7 @@ class Hazards extends WeatherDisplay {
 			// show alert indicator
 			if (this.data.length > 0) alert.classList.add('show');
 		} catch (error) {
-			console.error('Get hourly forecast failed');
+			console.error('Get hazards failed');
 			console.error(error.status, error.responseJSON);
 			if (this.isEnabled) this.setStatus(STATUS.failed);
 			// return undefined to other subscribers
@@ -129,7 +129,7 @@ class Hazards extends WeatherDisplay {
 		// don't let offset go negative
 		if (offsetY < 0) offsetY = 0;
 
-		// copy the scrolled portion of the canvas
+		// move the element
 		this.elem.querySelector('.main').scrollTo(0, offsetY);
 	}
 

server/scripts/modules/hourly-graph.mjs

@@ -6,6 +6,10 @@ import WeatherDisplay from './weatherdisplay.mjs';
 import { registerDisplay, timeZone } from './navigation.mjs';
 import { DateTime } from '../vendor/auto/luxon.mjs';
 
+// get available space
+const availableWidth = 532;
+const availableHeight = 285;
+
 class HourlyGraph extends WeatherDisplay {
 	constructor(navId, elemId, defaultActive) {
 		super(navId, elemId, 'Hourly Graph', defaultActive);
@@ -47,10 +51,6 @@ class HourlyGraph extends WeatherDisplay {
 	drawCanvas() {
 		if (!this.image) this.image = this.elem.querySelector('.chart img');
 
-		// get available space
-		const availableWidth = 532;
-		const availableHeight = 285;
-
 		this.image.width = availableWidth;
 		this.image.height = availableHeight;
 

server/scripts/modules/hourly.mjs

@@ -69,8 +69,7 @@ class Hourly extends WeatherDisplay {
 			const fillValues = {};
 			// hour
 			const hour = startingHour.plus({ hours: index });
-			const formattedHour = hour.toLocaleString({ weekday: 'short', hour: 'numeric' });
-			fillValues.hour = formattedHour;
+			fillValues.hour = hour.toLocaleString({ weekday: 'short', hour: 'numeric' });
 
 			// temperatures, convert to strings with no decimal
 			const temperature = data.temperature.toString().padStart(3);
@@ -81,12 +80,11 @@ class Hourly extends WeatherDisplay {
 			fillValues.like = feelsLike;
 
 			// wind
-			let wind = 'Calm';
+			fillValues.wind = 'Calm';
 			if (data.windSpeed > 0) {
 				const windSpeed = Math.round(data.windSpeed).toString();
-				wind = data.windDirection + (Array(6 - data.windDirection.length - windSpeed.length).join(' ')) + windSpeed;
+				fillValues.wind = data.windDirection + (Array(6 - data.windDirection.length - windSpeed.length).join(' ')) + windSpeed;
 			}
-			fillValues.wind = wind;
 
 			// image
 			fillValues.icon = { type: 'img', src: data.icon };
@@ -96,8 +94,7 @@ class Hourly extends WeatherDisplay {
 			// alter the color of the feels like column to reflect wind chill or heat index
 			if (feelsLike < temperature) {
 				filledRow.querySelector('.like').classList.add('wind-chill');
-			}
-			if (feelsLike > temperature) {
+			} else if (feelsLike > temperature) {
 				filledRow.querySelector('.like').classList.add('heat-index');
 			}
 

server/scripts/modules/icons/icons-hourly.mjs

@@ -1,7 +1,7 @@
-const hourlyIcon = (skyCover, weather, iceAccumulation, probabilityOfPrecipitation, snowfallAmount, windSpeed, isNight = false) => {
-	// internal function to add path to returned icon
-	const addPath = (icon) => `images/icons/regional-maps/${icon}`;
+// internal function to add path to returned icon
+const addPath = (icon) => `images/icons/regional-maps/${icon}`;
 
+const hourlyIcon = (skyCover, weather, iceAccumulation, probabilityOfPrecipitation, snowfallAmount, windSpeed, isNight = false) => {
 	// possible phenomenon
 	let thunder = false;
 	let snow = false;

server/scripts/modules/latestobservations.mjs

@@ -22,8 +22,7 @@ class LatestObservations extends WeatherDisplay {
 		// this is intentional because up to 30 stations are available to pull data from
 
 		// calculate distance to each station
-		const stationsByDistance = Object.keys(StationInfo).map((key) => {
-			const station = StationInfo[key];
+		const stationsByDistance = Object.values(StationInfo).map((station) => {
 			const distance = calcDistance(station.lat, station.lon, this.weatherParameters.latitude, this.weatherParameters.longitude);
 			return { ...station, distance };
 		});
@@ -104,8 +103,6 @@ class LatestObservations extends WeatherDisplay {
 		linesContainer.innerHTML = '';
 		linesContainer.append(...lines);
 
-		// update temperature unit header
-
 		this.finishDraw();
 	}
 }

server/scripts/modules/navigation.mjs

@@ -253,9 +253,9 @@ const resize = () => {
 
 	const scale = Math.min(widthZoomPercent, heightZoomPercent);
 	if (scale < 1.0 || document.fullscreenElement || settings.kiosk) {
-		document.querySelector('#container').style.transform = `scale(${scale})`;
+		document.querySelector('#container').style.zoom = scale;
 	} else {
-		document.querySelector('#container').style.transform = 'unset';
+		document.querySelector('#container').style.zoom = 'unset';
 	}
 };
 
@@ -266,6 +266,7 @@ const resetStatuses = () => {
 
 // allow displays to register themselves
 const registerDisplay = (display) => {
+	if (displays[display.navId]) console.warn(`Display nav ID ${display.navId} already in use`);
 	displays[display.navId] = display;
 
 	// generate checkboxes

server/scripts/modules/progress.mjs

@@ -1,5 +1,4 @@
 // regional forecast and observations
-import { loadImg } from './utils/image.mjs';
 import STATUS, { calcStatusClass, statusClasses } from './status.mjs';
 import WeatherDisplay from './weatherdisplay.mjs';
 import {
@@ -10,9 +9,6 @@ class Progress extends WeatherDisplay {
 	constructor(navId, elemId) {
 		super(navId, elemId, '', false);
 
-		// pre-load background image (returns promise)
-		this.backgroundImage = loadImg('images/backgrounds/1.png');
-
 		// disable any navigation timing
 		this.timing = false;
 

server/scripts/modules/radar-worker.mjs

@@ -0,0 +1,106 @@
+import * as utils from './radar-utils.mjs';
+
+const radarFullSize = { width: 2550, height: 1600 };
+const radarFinalSize = { width: 640, height: 367 };
+
+const fetchAsBlob = async (url) => {
+	const response = await fetch(url);
+	return response.blob();
+};
+
+const baseMapImages = new Promise((resolve) => {
+	fetchAsBlob('/images/maps/radar.webp').then((blob) => {
+		createImageBitmap(blob).then((imageBitmap) => {
+			// extract the black pixels to overlay on to the final image (boundaries)
+			const canvas = new OffscreenCanvas(imageBitmap.width, imageBitmap.height);
+			const context = canvas.getContext('2d');
+			context.drawImage(imageBitmap, 0, 0);
+			const imageData = context.getImageData(0, 0, imageBitmap.width, imageBitmap.height);
+
+			// go through the image data and preserve the black pixels, making the rest transparent
+			for (let i = 0; i < imageData.data.length; i += 4) {
+				if (imageData.data[i + 0] >= 116 || imageData.data[i + 1] >= 116 || imageData.data[i + 2] >= 116) {
+					// make it transparent
+					imageData.data[i + 3] = 0;
+				}
+			}
+			// write the image data back
+			context.putImageData(imageData, 0, 0);
+
+			resolve({
+				fullMap: imageBitmap,
+				overlay: canvas,
+			});
+		});
+	});
+});
+
+onmessage = async (e) => {
+	const {
+		url, RADAR_HOST, OVERRIDES, radarSourceXY, sourceXY, offsetX, offsetY,
+	} = e.data;
+
+	// get the image
+	const modifiedRadarUrl = OVERRIDES.RADAR_HOST ? url.replace(RADAR_HOST, OVERRIDES.RADAR_HOST) : url;
+	const radarResponsePromise = fetch(modifiedRadarUrl);
+
+	// calculate offsets and sizes
+
+	const radarSource = {
+		width: 240,
+		height: 163,
+		x: Math.round(radarSourceXY.x / 2),
+		y: Math.round(radarSourceXY.y / 2),
+	};
+
+	// create destination context
+	const baseCanvas = new OffscreenCanvas(radarFinalSize.width, radarFinalSize.height);
+	const baseContext = baseCanvas.getContext('2d');
+	baseContext.imageSmoothingEnabled = false;
+
+	// create working context for manipulation
+	const radarCanvas = new OffscreenCanvas(radarFullSize.width, radarFullSize.height);
+	const radarContext = radarCanvas.getContext('2d');
+	radarContext.imageSmoothingEnabled = false;
+
+	// get the base map
+	const baseMaps = await baseMapImages;
+	baseContext.drawImage(baseMaps.fullMap, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, radarFinalSize.width, radarFinalSize.height);
+
+	// test response
+	const radarResponse = await radarResponsePromise;
+	if (!radarResponse.ok) throw new Error(`Unable to fetch radar error ${radarResponse.status} ${radarResponse.statusText} from ${radarResponse.url}`);
+
+	// get the blob
+	const radarImgBlob = await radarResponse.blob();
+
+	// assign to an html image element
+	const radarImgElement = await createImageBitmap(radarImgBlob);
+	// draw the entire image
+	radarContext.clearRect(0, 0, radarFullSize.width, radarFullSize.height);
+	radarContext.drawImage(radarImgElement, 0, 0, radarFullSize.width, radarFullSize.height);
+
+	// crop the radar image without scaling
+	const croppedRadarCanvas = new OffscreenCanvas(radarSource.width, radarSource.height);
+	const croppedRadarContext = croppedRadarCanvas.getContext('2d');
+	croppedRadarContext.imageSmoothingEnabled = false;
+	croppedRadarContext.drawImage(radarCanvas, radarSource.x, radarSource.y, croppedRadarCanvas.width, croppedRadarCanvas.height, 0, 0, croppedRadarCanvas.width, croppedRadarCanvas.height);
+
+	// clean the image
+	utils.removeDopplerRadarImageNoise(croppedRadarContext);
+
+	// stretch the radar image
+	const stretchCanvas = new OffscreenCanvas(radarFinalSize.width, radarFinalSize.height);
+	const stretchContext = stretchCanvas.getContext('2d', { willReadFrequently: true });
+	stretchContext.imageSmoothingEnabled = false;
+	stretchContext.drawImage(croppedRadarCanvas, 0, 0, radarSource.width, radarSource.height, 0, 0, radarFinalSize.width, radarFinalSize.height);
+
+	// put the radar on the base map
+	baseContext.drawImage(stretchCanvas, 0, 0);
+	// put the road/boundaries overlay on the map
+	baseContext.drawImage(baseMaps.overlay, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, radarFinalSize.width, radarFinalSize.height);
+
+	const processedRadar = baseCanvas.transferToImageBitmap();
+
+	postMessage(processedRadar, [processedRadar]);
+};

server/scripts/modules/radar.mjs

@@ -1,13 +1,12 @@
 // current weather conditions display
 import STATUS from './status.mjs';
 import { DateTime } from '../vendor/auto/luxon.mjs';
-import { loadImg } from './utils/image.mjs';
 import { text } from './utils/fetch.mjs';
-import { rewriteUrl } from './utils/cors.mjs';
 import WeatherDisplay from './weatherdisplay.mjs';
 import { registerDisplay, timeZone } from './navigation.mjs';
 import * as utils from './radar-utils.mjs';
 
+const RADAR_HOST = 'mesonet.agron.iastate.edu';
 class Radar extends WeatherDisplay {
 	constructor(navId, elemId) {
 		super(navId, elemId, 'Local Radar', true);
@@ -40,6 +39,9 @@ class Radar extends WeatherDisplay {
 			{ time: 1, si: 4 },
 			{ time: 12, si: 5 },
 		];
+
+		// get some web workers started
+		this.workers = (new Array(this.dopplerRadarImageMax)).fill(null).map(() => radarWorker());
 	}
 
 	async getData(weatherParameters, refresh) {
@@ -51,12 +53,8 @@ class Radar extends WeatherDisplay {
 			return;
 		}
 
-		// get the base map
-		const src = 'images/maps/radar.webp';
-		this.baseMap = await loadImg(src);
-
-		const baseUrl = 'https://mesonet.agron.iastate.edu/archive/data/';
-		const baseUrlEnd = '/GIS/uscomp/';
+		const baseUrl = `https://${RADAR_HOST}/archive/data/`;
+		const baseUrlEnd = '/GIS/uscomp/?F=0&P=n0r*.png';
 		const baseUrls = [];
 		let date = DateTime.utc().minus({ days: 1 }).startOf('day');
 
@@ -102,91 +100,45 @@ class Radar extends WeatherDisplay {
 		const urls = sortedPngs.slice(-(this.dopplerRadarImageMax));
 
 		// calculate offsets and sizes
-		let offsetX = 120;
-		let offsetY = 69;
-		const width = 2550;
-		const height = 1600;
-		offsetX *= 2;
-		offsetY *= 2;
+		const offsetX = 120 * 2;
+		const offsetY = 69 * 2;
 		const sourceXY = utils.getXYFromLatitudeLongitudeMap(this.weatherParameters, offsetX, offsetY);
-
-		// calculate radar offsets
-		const radarOffsetX = 120;
-		const radarOffsetY = 70;
 		const radarSourceXY = utils.getXYFromLatitudeLongitudeDoppler(this.weatherParameters, offsetX, offsetY);
-		const radarSourceX = radarSourceXY.x / 2;
-		const radarSourceY = radarSourceXY.y / 2;
 
 		// Load the most recent doppler radar images.
-		const radarInfo = await Promise.all(urls.map(async (url) => {
-			// create destination context
-			const canvas = document.createElement('canvas');
-			canvas.width = 640;
-			canvas.height = 367;
-			const context = canvas.getContext('2d');
-			context.imageSmoothingEnabled = false;
-
-			// create working context for manipulation
-			const workingCanvas = document.createElement('canvas');
-			workingCanvas.width = width;
-			workingCanvas.height = height;
-			const workingContext = workingCanvas.getContext('2d');
-			workingContext.imageSmoothingEnabled = false;
-
-			// get the image
-			const response = await fetch(rewriteUrl(url));
-
-			// test response
-			if (!response.ok) throw new Error(`Unable to fetch radar error ${response.status} ${response.statusText} from ${response.url}`);
-
-			// get the blob
-			const blob = await response.blob();
+		const radarInfo = await Promise.all(urls.map(async (url, index) => {
+			const processedRadar = await this.workers[index].processRadar({
+				url,
+				RADAR_HOST,
+				OVERRIDES,
+				sourceXY,
+				radarSourceXY,
+				offsetX,
+				offsetY,
+			});
 
 			// store the time
 			const timeMatch = url.match(/_(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)\./);
-			let time;
-			if (timeMatch) {
-				const [, year, month, day, hour, minute] = timeMatch;
-				time = DateTime.fromObject({
-					year,
-					month,
-					day,
-					hour,
-					minute,
-				}, {
-					zone: 'UTC',
-				}).setZone(timeZone());
-			} else {
-				time = DateTime.fromHTTP(response.headers.get('last-modified')).setZone(timeZone());
-			}
 
-			// assign to an html image element
-			const imgBlob = await loadImg(blob);
+			const [, year, month, day, hour, minute] = timeMatch;
+			const time = DateTime.fromObject({
+				year,
+				month,
+				day,
+				hour,
+				minute,
+			}, {
+				zone: 'UTC',
+			}).setZone(timeZone());
 
-			// draw the entire image
-			workingContext.clearRect(0, 0, width, 1600);
-			workingContext.drawImage(imgBlob, 0, 0, width, 1600);
-
-			// get the base map
-			context.drawImage(this.baseMap, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, 640, 367);
-
-			// crop the radar image
-			const cropCanvas = document.createElement('canvas');
-			cropCanvas.width = 640;
-			cropCanvas.height = 367;
-			const cropContext = cropCanvas.getContext('2d', { willReadFrequently: true });
-			cropContext.imageSmoothingEnabled = false;
-			cropContext.drawImage(workingCanvas, radarSourceX, radarSourceY, (radarOffsetX * 2), (radarOffsetY * 2.33), 0, 0, 640, 367);
-			// clean the image
-			utils.removeDopplerRadarImageNoise(cropContext);
-
-			// merge the radar and map
-			utils.mergeDopplerRadarImage(context, cropContext);
-
-			const elem = this.fillTemplate('frame', { map: { type: 'img', src: canvas.toDataURL() } });
+			const onscreenCanvas = document.createElement('canvas');
+			onscreenCanvas.width = processedRadar.width;
+			onscreenCanvas.height = processedRadar.height;
+			const onscreenContext = onscreenCanvas.getContext('bitmaprenderer');
+			onscreenContext.transferFromImageBitmap(processedRadar);
 
+			const elem = this.fillTemplate('frame', { map: { type: 'canvas', canvas: onscreenCanvas } });
 			return {
-				canvas,
 				time,
 				elem,
 			};
@@ -199,8 +151,6 @@ class Radar extends WeatherDisplay {
 
 		// set max length
 		this.timing.totalScreens = radarInfo.length;
-		// store the images
-		this.data = radarInfo.map((radar) => radar.canvas);
 
 		this.times = radarInfo.map((radar) => radar.time);
 		this.setStatus(STATUS.loaded);
@@ -223,5 +173,30 @@ class Radar extends WeatherDisplay {
 	}
 }
 
+// create a radar worker with helper functions
+const radarWorker = () => {
+	// create the worker
+	const worker = new Worker(new URL('./radar-worker.mjs', import.meta.url), { type: 'module' });
+
+	const processRadar = (url) => new Promise((resolve, reject) => {
+		// prepare for done message
+		worker.onmessage = (e) => {
+			if (e?.data instanceof Error) {
+				reject(e.data);
+			} else if (e?.data instanceof ImageBitmap) {
+				resolve(e.data);
+			}
+		};
+
+		// start up the worker
+		worker.postMessage(url);
+	});
+
+	// return the object
+	return {
+		processRadar,
+	};
+};
+
 // register display
 registerDisplay(new Radar(11, 'radar'));

server/scripts/modules/regionalforecast-utils.mjs

@@ -20,7 +20,7 @@ const buildForecast = (forecast, city, cityXY) => {
 const getRegionalObservation = async (point, city) => {
 	try {
 		// get stations
-		const stations = await json(`https://api.weather.gov/gridpoints/${point.wfo}/${point.x},${point.y}/stations`);
+		const stations = await json(`https://api.weather.gov/gridpoints/${point.wfo}/${point.x},${point.y}/stations?limit=1`);
 
 		// get the first station
 		const station = stations.features[0].id;

server/scripts/modules/regionalforecast.mjs

@@ -13,6 +13,12 @@ import { registerDisplay } from './navigation.mjs';
 import * as utils from './regionalforecast-utils.mjs';
 import { getPoint } from './utils/weather.mjs';
 
+// map offset
+const mapOffsetXY = {
+	x: 240,
+	y: 117,
+};
+
 class RegionalForecast extends WeatherDisplay {
 	constructor(navId, elemId) {
 		super(navId, elemId, 'Regional Forecast', true);
@@ -36,23 +42,18 @@ class RegionalForecast extends WeatherDisplay {
 		}
 		this.elem.querySelector('.map img').src = baseMap;
 
-		// map offset
-		const offsetXY = {
-			x: 240,
-			y: 117,
-		};
 		// get user's location in x/y
-		const sourceXY = utils.getXYFromLatitudeLongitude(this.weatherParameters.latitude, this.weatherParameters.longitude, offsetXY.x, offsetXY.y, weatherParameters.state);
+		const sourceXY = utils.getXYFromLatitudeLongitude(this.weatherParameters.latitude, this.weatherParameters.longitude, mapOffsetXY.x, mapOffsetXY.y, weatherParameters.state);
 
 		// get latitude and longitude limits
-		const minMaxLatLon = utils.getMinMaxLatitudeLongitude(sourceXY.x, sourceXY.y, offsetXY.x, offsetXY.y, this.weatherParameters.state);
+		const minMaxLatLon = utils.getMinMaxLatitudeLongitude(sourceXY.x, sourceXY.y, mapOffsetXY.x, mapOffsetXY.y, this.weatherParameters.state);
 
 		// get a target distance
 		let targetDistance = 2.5;
 		if (this.weatherParameters.state === 'HI') targetDistance = 1;
 
 		// make station info into an array
-		const stationInfoArray = Object.values(StationInfo).map((value) => ({ ...value, targetDistance }));
+		const stationInfoArray = Object.values(StationInfo).map((station) => ({ ...station, targetDistance }));
 		// combine regional cities with station info for additional stations
 		// stations are intentionally after cities to allow cities priority when drawing the map
 		const combinedCities = [...RegionalCities, ...stationInfoArray];
@@ -137,7 +138,7 @@ class RegionalForecast extends WeatherDisplay {
 		// return the weather data and offsets
 		this.data = {
 			regionalData,
-			offsetXY,
+			mapOffsetXY,
 			sourceXY,
 		};
 
@@ -147,7 +148,7 @@ class RegionalForecast extends WeatherDisplay {
 	drawCanvas() {
 		super.drawCanvas();
 		// break up data into useful values
-		const { regionalData: data, sourceXY, offsetXY } = this.data;
+		const { regionalData: data, sourceXY } = this.data;
 
 		// draw the header graphics
 
@@ -170,7 +171,7 @@ class RegionalForecast extends WeatherDisplay {
 		}
 
 		// draw the map
-		const scale = 640 / (offsetXY.x * 2);
+		const scale = 640 / (mapOffsetXY.x * 2);
 		const map = this.elem.querySelector('.map');
 		map.style.transform = `scale(${scale}) translate(-${sourceXY.x}px, -${sourceXY.y}px)`;
 

server/scripts/modules/share.mjs

@@ -1,3 +1,5 @@
+import { elemForEach } from './utils/elem.mjs';
+
 document.addEventListener('DOMContentLoaded', () => init());
 
 // shorthand mappings for frequently used values
@@ -19,21 +21,18 @@ const init = () => {
 const createLink = async (e) => {
 	// cancel default event (click on hyperlink)
 	e.preventDefault();
-	// get all checkboxes on page
-	const checkboxes = document.querySelectorAll('input[type=checkbox]');
 
 	// list to receive checkbox statuses
 	const queryStringElements = {};
 
-	[...checkboxes].forEach((elem) => {
+	elemForEach('input[type=checkbox]', (elem) => {
 		if (elem?.id) {
 			queryStringElements[elem.id] = elem?.checked ?? false;
 		}
 	});
 
 	// get all select boxes
-	const selects = document.querySelectorAll('select');
-	[...selects].forEach((elem) => {
+	elemForEach('select', (elem) => {
 		if (elem?.id) {
 			queryStringElements[elem.id] = elem?.value ?? 0;
 		}

server/scripts/modules/utils/image.mjs

@@ -1,21 +1,4 @@
 import { blob } from './fetch.mjs';
-import { rewriteUrl } from './cors.mjs';
-
-// ****************************** load images *********************************
-// load an image from a blob or url
-const loadImg = (imgData, cors = false) => new Promise((resolve) => {
-	const img = new Image();
-	img.onload = (e) => {
-		resolve(e.target);
-	};
-	if (imgData instanceof Blob) {
-		img.src = window.URL.createObjectURL(imgData);
-	} else {
-		let url = imgData;
-		if (cors) url = rewriteUrl(imgData);
-		img.src = url;
-	}
-});
 
 // preload an image
 // the goal is to get it in the browser's cache so it is available more quickly when the browser needs it
@@ -29,6 +12,6 @@ const preloadImg = (src) => {
 };
 
 export {
-	loadImg,
+	// eslint-disable-next-line import/prefer-default-export
 	preloadImg,
 };

server/scripts/modules/utils/weather.mjs

@@ -2,7 +2,7 @@ import { json } from './fetch.mjs';
 
 const getPoint = async (lat, lon) => {
 	try {
-		return await json(`https://api.weather.gov/points/${lat},${lon}`);
+		return await json(`https://api.weather.gov/points/${lat.toFixed(4)},${lon.toFixed(4)}`);
 	} catch (error) {
 		console.log(`Unable to get point ${lat}, ${lon}`);
 		console.error(error);

server/scripts/modules/weatherdisplay.mjs

@@ -7,6 +7,7 @@ import {
 } from './navigation.mjs';
 import { parseQueryString } from './share.mjs';
 import settings from './settings.mjs';
+import { elemForEach } from './utils/elem.mjs';
 
 class WeatherDisplay {
 	constructor(navId, elemId, name, defaultEnabled) {
@@ -391,8 +392,7 @@ class WeatherDisplay {
 		this.templates = {};
 		this.elem = document.querySelector(`#${this.elemId}-html`);
 		if (!this.elem) return;
-		const templates = this.elem.querySelectorAll('.template');
-		templates.forEach((template) => {
+		elemForEach(`#${this.elemId}-html .template`, (template) => {
 			const className = template.classList[0];
 			const node = template.cloneNode(true);
 			node.classList.remove('template');
@@ -421,6 +421,8 @@ class WeatherDisplay {
 			} else if (value?.type === 'img') {
 				// fill the image source
 				elem.querySelector('img').src = value.src;
+			} else if (value?.type === 'canvas') {
+				elem.append(value.canvas);
 			}
 		});
 

server/styles/scss/_page.scss

@@ -189,11 +189,33 @@ body {
 #divTwcBottom>div {
 	padding-left: 6px;
 	padding-right: 6px;
+
+	// scale down the buttons on narrower screens
+	@media (max-width: 550px) {
+		zoom: 0.90;
+	}
+
+	@media (max-width: 500px) {
+		zoom: 0.80;
+	}
+
+	@media (max-width: 450px) {
+		zoom: 0.70;
+	}
+
+	@media (max-width: 400px) {
+		zoom: 0.60;
+	}
+
+	@media (max-width: 350px) {
+		zoom: 0.50;
+	}
 }
 
 #divTwcBottomLeft {
 	flex: 1;
 	text-align: left;
+
 }
 
 #divTwcBottomMiddle {
@@ -260,7 +282,7 @@ body {
 
 @font-face {
 	font-family: 'Star4000 Large';
-	src: url('../fonts/Star4000 Large.woff') format('woff');
+	src: url('../fonts/Star4000 Large.ttf') format('truetype');
 	font-display: swap;
 }
 

src/overrides.mjs

@@ -0,0 +1,10 @@
+// read overrides from environment variables
+
+const OVERRIDES = {};
+Object.entries(process.env).forEach(([key, value]) => {
+	if (key.match(/^OVERRIDE_/)) {
+		OVERRIDES[key.replace('OVERRIDE_', '')] = value;
+	}
+});
+
+export default OVERRIDES;

views/index.ejs

@@ -18,19 +18,22 @@
 	<meta property="og:image" content="https://weatherstar.netbymatt.com/images/social/1200x600.png">
 	<meta property="og:image:width" content="1200">
 	<meta property="og:image:height" content="627">
-	<link rel="preload" href="fonts/Star4000.woff" as="font" type="font/woff" crossorigin>
-	<link rel="preload" href="fonts/Star4000 Extended.woff" as="font" type="font/woff" crossorigin>
-	<link rel="preload" href="fonts/Star4000 Large.woff" as="font" type="font/woff" crossorigin>
-	<link rel="preload" href="fonts/Star4000 Small.woff" as="font" type="font/woff" crossorigin>
+	<link rel="prefetch" href="fonts/Star4000.woff" as="font" type="font/woff" crossorigin>
+	<link rel="prefetch" href="fonts/Star4000 Extended.woff" as="font" type="font/woff" crossorigin>
+	<link rel="prefetch" href="fonts/Star4000 Large.ttf" as="font" type="font/ttf" crossorigin>
+	<link rel="prefetch" href="fonts/Star4000 Small.woff" as="font" type="font/woff" crossorigin>
 
   <% if (production) { %>
   <link rel="stylesheet" type="text/css" href="resources/ws.min.css?_=<%=production%>" />
   <script type="text/javascript" src="resources/data.min.js?_=<%=production%>"></script>
   <script type="text/javascript" src="resources/vendor.min.js?_=<%=production%>"></script>
   <script type="text/javascript" src="resources/ws.min.js?_=<%=production%>"></script>
+	<script type="text/javascript">const OVERRIDES=<%-JSON.stringify(OVERRIDES)%>;</script>
   <% } else { %>
   <link rel="stylesheet" type="text/css" href="styles/main.css" />
-  <script type="text/javascript" src="scripts/vendor/auto/nosleep.js"></script>
+	<!--<script type="text/javascript">const OVERRIDES={};</script>-->
+	<script type="text/javascript">OVERRIDES=<%-JSON.stringify(OVERRIDES)%>;</script>
+	<script type="text/javascript" src="scripts/vendor/auto/nosleep.js"></script>
   <script type="text/javascript" src="scripts/vendor/auto/swiped-events.js"></script>
   <script type="text/javascript" src="scripts/vendor/auto/suncalc.js"></script>
   <script type="module" src="scripts/modules/hazards.mjs"></script>

views/partials/radar.ejs

@@ -35,7 +35,6 @@
 		<div class="scroll-area">
 			<div class="frame template">
 				<div class="map">
-					<img src="images/maps/radar.webp" />
 				</div>
 			</div>
 		</div>