dctalbot
Get common or "dominant" color from an image given a source URL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
import Jimp from "npm:jimp";
const IMG_URL = "https://letsenhance.io/static/8f5e523ee6b2479e26ecc91b9c25261e/1015f/MainAfter.jpg";
const PERCENT_COVERAGE = 10; // lower is faster, but higher is more accurate
function getPixelIndex(numToRound) {
// Each pixel is 4 units long: r,g,b,a
const remainder = numToRound % 4;
if (remainder == 0) return numToRound;
return numToRound + 4 - remainder;
}
export async function getColor(src: string = IMG_URL): Promise<string> {
return Jimp.read(src)
.then((image) => {
const store = {};
const pixelCount = image.bitmap.width * image.bitmap.height;
const coverage = pixelCount * PERCENT_COVERAGE / 100;
const data = image.bitmap.data;
for (let i = 0; i < coverage; ++i) {
const x = getPixelIndex(Math.floor(Math.random() * (pixelCount - 1)));
const key = `${data[x]},${data[x + 1]},${data[x + 2]}`;
const val = store[key];
store[key] = val ? val + 1 : 1;
}
const rgb = Object.keys(store).reduce((a, b) => store[a] > store[b] ? a : b);
return `rgb(${rgb})`;
});
}
console.log(await getColor()); // TODO remove
dctalbot AQI Alerts
Get email alerts when AQI is unhealthy near you.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
import { email } from "https://esm.town/v/std/email?v=9";
import { easyAQI } from "https://esm.town/v/stevekrouse/easyAQI";
export async function aqi(interval: Interval) {
const location = "williamsburg brooklyn"; // <-- change to place, city, or zip code
const data = await easyAQI({ location });
if (!interval.lastRunAt) {
email({
text:
`You will now get Air Quality alerts for ${location} if it's unhealthy. It is now ${data.aqi} which is ${data.severity}.`,
subject: `AQI Alerts for ${location} setup!`,
});
}
if (data.severity.includes("Unhealthy")) {
email({
text: "Air Quality: " + data.severity,
subject: `AQI in ${location} is ${data.aqi}`,
});
}
}