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process images

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This commit is contained in:
Matt Walsh 2020-12-29 15:26:58 -06:00
parent a9d0968e28
commit f409576fa7
5 changed files with 77 additions and 120 deletions
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9
gulp/update-vendor.js
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@ -1,3 +1,4 @@
/* eslint-disable import/no-extraneous-dependencies */
const gulp = require('gulp');
const del = require('del');
const rename = require('gulp-rename');
@ -7,15 +8,16 @@ const clean = (cb) => {
cb();
};
const vendor_files = [
const vendorFiles = [
'./node_modules/luxon/build/global/luxon.js',
'./node_modules/luxon/build/global/luxon.js.map',
'./node_modules/nosleep.js/dist/NoSleep.js',
'./node_modules/jquery/dist/jquery.js',
'./node_modules/suncalc/suncalc.js',
'./node_modules/swiped-events/src/swiped-events.js',
];
const copy = () => gulp.src(vendor_files)
const copy = () => gulp.src(vendorFiles)
.pipe(rename((path) => {
path.dirname = path.dirname.toLowerCase();
path.basename = path.basename.toLowerCase();
@ -23,5 +25,4 @@ const copy = () => gulp.src(vendor_files)
}))
.pipe(gulp.dest('./server/scripts/vendor/auto'));
module.exports = gulp.series(clean, copy);
module.exports = gulp.series(clean, copy);

181
server/scripts/modules/radar.js
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@ -55,12 +55,12 @@ class Radar extends WeatherDisplay {
this.baseMap = await utils.image.load(src);
const baseUrl = 'https://mesonet.agron.iastate.edu/archive/data/';
const baseUrlEnd = '/GIS/uscomp';
const baseUrlEnd = '/GIS/uscomp/';
const baseUrls = [];
let date = DateTime.utc().minus({ days: 1 }).startOf('day');
// make urls for yesterday, today and tomorrow
while (date <= DateTime.utc().plus({ days: 1 }).startOf('day')) {
// make urls for yesterday and today
while (date <= DateTime.utc().startOf('day')) {
baseUrls.push(`${baseUrl}${date.toFormat('yyyy/LL/dd')}${baseUrlEnd}`);
date = date.plus({ days: 1 });
}
@ -87,44 +87,27 @@ class Radar extends WeatherDisplay {
base.href = baseUrls[htmlIdx];
xmlDoc.head.append(base);
const anchors = xmlDoc.getElementsByTagName('a');
const gifs = [];
for (const idx in anchors) {
if (anchors[idx].innerHTML?.includes('png') && anchors[idx].innerHTML?.includes('n0r_')) {
gifs.push(anchors[idx].href);
const urls = [];
Array.from(anchors).forEach((elem) => {
if (elem.innerHTML?.includes('.png') && elem.innerHTML?.includes('n0r_')) {
urls.push(elem.href);
}
}
return gifs;
});
return urls;
}).flat();
// filter for selected urls
let filter = /Conus_\d/;
if (weatherParameters.state === 'HI') filter = /hawaii_\d/;
// get the last few images
const urlsFull = gifs.filter((gif) => gif && gif.match(filter));
const urls = urlsFull.slice(-(this.dopplerRadarImageMax - 1));
// add additional 'latest.gif'
if (weatherParameters.state !== 'HI') urls.push('latest_radaronly.gif');
if (weatherParameters.state === 'HI') urls.push('hawaii_radaronly.gif');
const sortedPngs = pngs.sort((a, b) => (Date(a) < Date(b) ? -1 : 1));
const urls = sortedPngs.slice(-(this.dopplerRadarImageMax));
// calculate offsets and sizes
let offsetX = 120;
let offsetY = 69;
let sourceXY;
let width;
let height;
if (weatherParameters.State === 'HI') {
width = 600;
height = 571;
sourceXY = this.getXYFromLatitudeLongitudeHI(weatherParameters.latitude, weatherParameters.longitude, offsetX, offsetY);
} else {
width = 2550;
height = 1600;
offsetX *= 2;
offsetY *= 2;
sourceXY = this.getXYFromLatitudeLongitudeDoppler(weatherParameters.latitude, weatherParameters.longitude, offsetX, offsetY);
}
const width = 2550;
const height = 1600;
offsetX *= 2;
offsetY *= 2;
const sourceXY = Radar.getXYFromLatitudeLongitudeMap(weatherParameters, offsetX, offsetY);
// create working context for manipulation
const workingCanvas = document.createElement('canvas');
@ -134,19 +117,11 @@ class Radar extends WeatherDisplay {
workingContext.imageSmoothingEnabled = false;
// calculate radar offsets
let radarOffsetX = 117;
let radarOffsetY = 60;
let radarSourceXY = this.getXYFromLatitudeLongitudeDoppler(weatherParameters.latitude, weatherParameters.longitude, offsetX, offsetY);
let radarSourceX = radarSourceXY.x / 2;
let radarSourceY = radarSourceXY.y / 2;
if (weatherParameters.State === 'HI') {
radarOffsetX = 120;
radarOffsetY = 69;
radarSourceXY = this.getXYFromLatitudeLongitudeHI(weatherParameters.latitude, weatherParameters.longitude, offsetX, offsetY);
radarSourceX = radarSourceXY.x;
radarSourceY = radarSourceXY.y;
}
const radarOffsetX = 120;
const radarOffsetY = 70;
const radarSourceXY = Radar.getXYFromLatitudeLongitudeDoppler(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) => {
@ -158,7 +133,7 @@ class Radar extends WeatherDisplay {
context.imageSmoothingEnabled = false;
// get the image
const response = await fetch(utils.cors.rewriteUrl(baseUrl + url));
const response = await fetch(utils.cors.rewriteUrl(url));
// test response
if (!response.ok) throw new Error(`Unable to fetch radar error ${response.status} ${response.statusText} from ${response.url}`);
@ -167,7 +142,7 @@ class Radar extends WeatherDisplay {
const blob = await response.blob();
// store the time
const timeMatch = url.match(/_(\d{4})(\d\d)(\d\d)_(\d\d)(\d\d)_/);
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;
@ -187,13 +162,9 @@ class Radar extends WeatherDisplay {
const imgBlob = await utils.image.load(blob);
// draw the entire image
if (weatherParameters.State === 'HI') {
workingContext.clearRect(0, 0, 571, 600);
workingContext.drawImage(imgBlob, 0, 0, 571, 600);
} else {
workingContext.clearRect(0, 0, 2550, 1600);
workingContext.drawImage(imgBlob, 0, 0, 2550, 1600);
}
workingContext.clearRect(0, 0, width, 1600);
workingContext.drawImage(imgBlob, 0, 0, width, 1600);
// get the base map
context.drawImage(await this.baseMap, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, 640, 367);
@ -206,10 +177,10 @@ class Radar extends WeatherDisplay {
cropContext.imageSmoothingEnabled = false;
cropContext.drawImage(workingCanvas, radarSourceX, radarSourceY, (radarOffsetX * 2), (radarOffsetY * 2.33), 0, 0, 640, 367);
// clean the image
this.removeDopplerRadarImageNoise(cropContext);
Radar.removeDopplerRadarImageNoise(cropContext);
// merge the radar and map
this.mergeDopplerRadarImage(context, cropContext);
Radar.mergeDopplerRadarImage(context, cropContext);
return {
canvas,
@ -256,63 +227,38 @@ class Radar extends WeatherDisplay {
this.finishDraw();
}
// utility latitude/pixel conversions
getXYFromLatitudeLongitude(Latitude, Longitude, OffsetX, OffsetY, state) {
if (state === 'HI') return this.getXYFromLatitudeLongitudeHI(...arguments);
static getXYFromLatitudeLongitudeMap(pos, offsetX, offsetY) {
let y = 0;
let x = 0;
const ImgHeight = 1600;
const ImgWidth = 2550;
const imgHeight = 3200;
const imgWidth = 5100;
y = (51.75 - pos.latitude) * 55.2;
// center map
y -= offsetY;
y = (50.5 - Latitude) * 55.2;
y -= OffsetY; // Centers map.
// Do not allow the map to exceed the max/min coordinates.
if (y > (ImgHeight - (OffsetY * 2))) {
y = ImgHeight - (OffsetY * 2);
if (y > (imgHeight - (offsetY * 2))) {
y = imgHeight - (offsetY * 2);
} else if (y < 0) {
y = 0;
}
x = ((-127.5 - Longitude) * 41.775) * -1;
x -= OffsetX; // Centers map.
x = ((-130.37 - pos.longitude) * 41.775) * -1;
// center map
x -= offsetX;
// Do not allow the map to exceed the max/min coordinates.
if (x > (ImgWidth - (OffsetX * 2))) {
x = ImgWidth - (OffsetX * 2);
if (x > (imgWidth - (offsetX * 2))) {
x = imgWidth - (offsetX * 2);
} else if (x < 0) {
x = 0;
}
return { x, y };
return { x: x * 2, y: y * 2 };
}
static getXYFromLatitudeLongitudeHI(Latitude, Longitude, OffsetX, OffsetY) {
let y = 0;
let x = 0;
const ImgHeight = 571;
const ImgWidth = 600;
y = (25 - Latitude) * 55.2;
y -= OffsetY; // Centers map.
// Do not allow the map to exceed the max/min coordinates.
if (y > (ImgHeight - (OffsetY * 2))) {
y = ImgHeight - (OffsetY * 2);
} else if (y < 0) {
y = 0;
}
x = ((-164.5 - Longitude) * 41.775) * -1;
x -= OffsetX; // Centers map.
// Do not allow the map to exceed the max/min coordinates.
if (x > (ImgWidth - (OffsetX * 2))) {
x = ImgWidth - (OffsetX * 2);
} else if (x < 0) {
x = 0;
}
return { x, y };
}
static GetXYFromLatitudeLongitudeDoppler(pos, offsetX, offsetY) {
static getXYFromLatitudeLongitudeDoppler(pos, offsetX, offsetY) {
let y = 0;
let x = 0;
const imgHeight = 6000;
@ -353,61 +299,68 @@ class Radar extends WeatherDisplay {
// i + 1 = green
// i + 2 = blue
// i + 3 = alpha (0 = transparent, 255 = opaque)
let [R, G, B, A] = RadarImageData.data.slice(i, i + 4);
let R = RadarImageData.data[i];
let G = RadarImageData.data[i + 1];
let B = RadarImageData.data[i + 2];
let A = RadarImageData.data[i + 3];
// is this pixel the old rgb?
if ((R === 1 && G === 159 && B === 244)
|| (R >= 200 && G >= 200 && B >= 200)
|| (R === 4 && G === 233 && B === 231)
|| (R === 3 && G === 0 && B === 244)) {
if ((R === 0 && G === 0 && B === 0)
|| (R === 0 && G === 236 && B === 236)
|| (R === 1 && G === 160 && B === 246)
|| (R === 0 && G === 0 && B === 246)) {
// change to your new rgb
// Transparent
R = 0;
G = 0;
B = 0;
A = 0;
} else if (R === 2 && G === 253 && B === 2) {
} else if ((R === 0 && G === 255 && B === 0)) {
// Light Green 1
R = 49;
G = 210;
B = 22;
A = 255;
} else if (R === 1 && G === 197 && B === 1) {
} else if ((R === 0 && G === 200 && B === 0)) {
// Light Green 2
R = 0;
G = 142;
B = 0;
A = 255;
} else if (R === 0 && G === 142 && B === 0) {
} else if ((R === 0 && G === 144 && B === 0)) {
// Dark Green 1
R = 20;
G = 90;
B = 15;
A = 255;
} else if (R === 253 && G === 248 && B === 2) {
} else if ((R === 255 && G === 255 && B === 0)) {
// Dark Green 2
R = 10;
G = 40;
B = 10;
A = 255;
} else if (R === 229 && G === 188 && B === 0) {
} else if ((R === 231 && G === 192 && B === 0)) {
// Yellow
R = 196;
G = 179;
B = 70;
A = 255;
} else if (R === 253 && G === 139 && B === 0) {
} else if ((R === 255 && G === 144 && B === 0)) {
// Orange
R = 190;
G = 72;
B = 19;
A = 255;
} else if (R === 212 && G === 0 && B === 0) {
} else if ((R === 214 && G === 0 && B === 0)
|| (R === 255 && G === 0 && B === 0)) {
// Red
R = 171;
G = 14;
B = 14;
A = 255;
} else if (R === 188 && G === 0 && B === 0) {
} else if ((R === 192 && G === 0 && B === 0)
|| (R === 255 && G === 0 && B === 255)) {
// Brown
R = 115;
G = 31;
@ -415,15 +368,15 @@ class Radar extends WeatherDisplay {
A = 255;
}
// store new values
RadarImageData.data[i] = R;
RadarImageData.data[i + 1] = G;
RadarImageData.data[i + 2] = B;
RadarImageData.data[i + 3] = A;
}
// rewrite the image
RadarContext.putImageData(RadarImageData, 0, 0);
// MapContext.drawImage(RadarContext.canvas, 0, 0);
}
static mergeDopplerRadarImage(mapContext, radarContext) {

1
server/scripts/vendor/auto/luxon.js.map vendored Normal file
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File diff suppressed because one or more lines are too long

2
version.js
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@ -1 +1 @@
module.exports = '3.8.5';
module.exports = '4.0.0';

4
ws4kp.code-workspace
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@ -18,6 +18,7 @@
"'storm",
"Battaglia",
"Noaa",
"Pngs",
"T",
"T'storm",
"Visib",
@ -25,7 +26,8 @@
"devbridge",
"ltrim",
"nosleep",
"rtrim"
"rtrim",
"uscomp"
],
"cSpell.ignorePaths": [
"**/package-lock.json",