Ledda/climate-server
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Starting anew, before I changed to a custom chart

Browse Source
This commit is contained in:
Daniel Ledda
2021-03-14 18:42:25 +01:00
commit 50362860ae
47 changed files with 13982 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
dashboard/src/Chart.ts Normal file
View File

@@ -0,0 +1,77 @@
import Snapshot from "./Snapshot";
export default class Chart {
private readonly ctx: CanvasRenderingContext2D;
constructor(context: CanvasRenderingContext2D) {
this.ctx = context;
}
render(snapshots: Snapshot[]) {
const snapshotWidth = this.ctx.canvas.width;
let minTemp = Infinity;
let maxTemp = -Infinity;
let minCo2 = Infinity;
let maxCo2 = -Infinity;
let minHumidity = Infinity;
let maxHumidity = -Infinity;
for (const snapshot of snapshots) {
if (snapshot.temp < minTemp) {
minTemp = snapshot.temp;
}
if (snapshot.temp > maxTemp) {
maxTemp = snapshot.temp;
}
if (snapshot.co2 < minCo2) {
minCo2 = snapshot.co2;
}
if (snapshot.co2 > maxCo2) {
maxCo2 = snapshot.co2;
}
if (snapshot.humidity < minHumidity) {
minHumidity = snapshot.humidity;
}
if (snapshot.humidity > maxHumidity) {
maxHumidity = snapshot.humidity;
}
}
const humidityRange = maxHumidity - minHumidity;
let x = snapshotWidth / 2;
let y = (snapshots[0].humidity - minHumidity) / humidityRange;
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
this.ctx.moveTo(x, y);
for (let i = 1; i < snapshots.length; i++) {
x += snapshotWidth;
y = (snapshots[i].humidity - minHumidity) / humidityRange;
this.ctx.lineTo(x, y);
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
}
this.ctx.stroke();
const co2Range = maxCo2 - minCo2;
x = snapshotWidth / 2;
y = (snapshots[0].humidity - minHumidity) / humidityRange;
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
this.ctx.moveTo(x, y);
for (let i = 1; i < snapshots.length; i++) {
x += snapshotWidth;
y = (snapshots[i].humidity - minHumidity) / humidityRange;
this.ctx.lineTo(x, y);
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
}
this.ctx.stroke();
const tempRange = maxTemp - minTemp;
x = snapshotWidth / 2;
y = (snapshots[0].humidity - minHumidity) / humidityRange;
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
this.ctx.moveTo(x, y);
for (let i = 1; i < snapshots.length; i++) {
x += snapshotWidth;
y = (snapshots[i].humidity - minHumidity) / humidityRange;
this.ctx.lineTo(x, y);
this.ctx.ellipse(x, y, 3, 3, 0, 0, 2 * Math.PI);
}
this.ctx.stroke();
}
}