personal/weather-server: weather_server/static/graph.js annotate

annotate weather_server/static/graph.js @ 41:4af79d69b12e v0.2.0

Use units better suited for science.

author	Paul Fisher <paul@pfish.zone>
date	Tue, 01 Apr 2025 16:04:52 -0400
parents	beedfa8eaa3f
children

rev	line source
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	1 var __awaiter = (this && this.__awaiter) \|\| function (thisArg, _arguments, P, generator) {
28 f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	2 function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	3 return new (P \|\| (P = Promise))(function (resolve, reject) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	4 function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	5 function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
28 f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	6 function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	7 step((generator = generator.apply(thisArg, _arguments \|\| [])).next());
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	8 });
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	9 };
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	10 define("math", ["require", "exports"], function (require, exports) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	11 "use strict";
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	12 Object.defineProperty(exports, "__esModule", { value: true });
41 4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	13 exports.dewPointC = exports.cToK = exports.cToF = void 0;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	14 function cToF(tempC) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	15 return tempC * 9 / 5 + 32;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	16 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	17 exports.cToF = cToF;
41 4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	18 function cToK(tempC) {
4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	19 return tempC + 273.15;
4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	20 }
4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	21 exports.cToK = cToK;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	22 const MAGNUS_B = 17.62;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	23 const MAGNUS_C = 243.12;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	24 function gammaFn(tempC, rhPct) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	25 return Math.log(rhPct / 100) + MAGNUS_B * tempC / (MAGNUS_C + tempC);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	26 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	27 function dewPointC(tempC, rhPct) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	28 const gamma = gammaFn(tempC, rhPct);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	29 return MAGNUS_C * gamma / (MAGNUS_B - gamma);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	30 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	31 exports.dewPointC = dewPointC;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	32 });
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	33 define("graph", ["require", "exports", "math"], function (require, exports, math_1) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	34 "use strict";
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	35 Object.defineProperty(exports, "__esModule", { value: true });
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	36 exports.setUp = void 0;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	37 const HISTORY_SECONDS = 60 * 60 * 4;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	38 const BUFFER_SECONDS = 300;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	39 function setUp(root, tempElement, dewPointElement) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	40 return __awaiter(this, void 0, void 0, function* () {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	41 const nowTS = new Date().getTime() / 1000;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	42 const startTS = nowTS - HISTORY_SECONDS;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	43 const query = new URL('?', location.href);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	44 query.pathname = query.pathname + '/recent';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	45 query.searchParams.set('seconds', String(HISTORY_SECONDS + BUFFER_SECONDS));
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	46 const results = yield fetch(query.href);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	47 if (!results.ok)
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	48 return;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	49 const data = yield results.json();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	50 const readings = data.readings;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	51 if (readings.length === 0)
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	52 return;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	53 root.classList.remove('plain');
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	54 root.classList.add('fancy');
41 4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	55 const tempsF = readings.map(s => [s.sample_time, (0, math_1.cToK)(s.temp_c)]);
4af79d69b12e Use units better suited for science. Paul Fisher <paul@pfish.zone> parents: 33 diff changeset	56 const dewPointsF = readings.map(s => [s.sample_time, (0, math_1.cToK)((0, math_1.dewPointC)(s.temp_c, s.rh_pct))]);
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	57 setUpElement(tempElement, [startTS, nowTS], tempsF);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	58 setUpElement(dewPointElement, [startTS, nowTS], dewPointsF);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	59 });
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	60 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	61 exports.setUp = setUp;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	62 function setUpElement(element, timeRange, data) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	63 if (data.length === 0)
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	64 return;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	65 const chart = new Chart(element, timeRange, data);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	66 chart.resize();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	67 addEventListener('resize', () => chart.resize());
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	68 }
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	69 const Y_DEGREE_RANGE = 12;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	70 const LINE_WIDTH_PX = 2;
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	71 const GRID_WIDTH_PX = 0.5;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	72 const FONT_SIZE = '40px';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	73 class Chart {
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	74 constructor(element, timeRange, data, timezone) {
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	75 this.element = element;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	76 this.timeRange = timeRange;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	77 this.data = data;
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	78 this.timezone = timezone;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	79 this.canvas = document.createElement('canvas');
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	80 this.element.insertBefore(this.canvas, element.firstChild);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	81 const unit = element.getElementsByClassName('unit')[0];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	82 this.unit = unit && unit.textContent \|\| '';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	83 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	84 resize() {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	85 const dpr = self.devicePixelRatio \|\| 1;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	86 const [w, h] = this.size();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	87 const pxSize = [w * dpr, h * dpr];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	88 this.canvas.width = pxSize[0];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	89 this.canvas.height = pxSize[1];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	90 const ctx = this.canvas.getContext('2d');
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	91 ctx.clearRect(0, 0, pxSize[0], pxSize[1]);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	92 ctx.scale(dpr, dpr);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	93 this.redraw(ctx);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	94 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	95 redraw(ctx) {
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	96 ctx.strokeStyle = this.stroke();
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	97 ctx.lineJoin = 'round';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	98 ctx.lineWidth = LINE_WIDTH_PX;
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	99 ctx.font = `bold ${FONT_SIZE} ${this.font()}`;
28 f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	100 const onScreenData = this.data.filter(([time, _]) => this.timeRange[0] <= time);
f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	101 const yRange = calculateYRange(onScreenData.map(d => d[1]));
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	102 const [fullW, fullH] = this.size();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	103 const [xPad, yMargin] = this.measureMargin(ctx);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	104 const graphSize = [fullW - xPad, fullH];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	105 ctx.beginPath();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	106 for (const pt of this.data) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	107 const projected = project(pt, graphSize, this.timeRange, yRange);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	108 ctx.lineTo(...projected);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	109 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	110 ctx.stroke();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	111 ctx.beginPath();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	112 const lastPt = this.data[this.data.length - 1];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	113 const center = project(lastPt, graphSize, this.timeRange, yRange);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	114 ctx.ellipse(center[0], center[1], 1.5 * LINE_WIDTH_PX, 1.5 * LINE_WIDTH_PX, 0, 0, 2 * Math.PI);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	115 ctx.fillStyle = getComputedStyle(this.element).backgroundColor;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	116 ctx.fill();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	117 ctx.stroke();
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	118 this.drawGrid(ctx, graphSize, yRange);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	119 ctx.fillStyle = this.stroke();
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	120 ctx.textAlign = 'left';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	121 ctx.textBaseline = 'top';
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	122 ctx.fillText(`${niceNumber(lastPt[1])} ${this.unit}`, center[0] + 5 * LINE_WIDTH_PX, center[1] + yMargin);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	123 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	124 measureMargin(ctx) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	125 const bbox = ctx.measureText(`−99 ${this.unit}`);
28 f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	126 const margin = 5 * LINE_WIDTH_PX +
f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	127 bbox.width +
f817fa785c93 Make graph only consider visible points when setting range. Paul Fisher <paul@pfish.zone> parents: 19 diff changeset	128 16;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	129 return [margin, -31.5 / 2];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	130 }
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	131 drawGrid(ctx, size, yRange) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	132 ctx.save();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	133 ctx.lineCap = 'butt';
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	134 ctx.lineWidth = GRID_WIDTH_PX;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	135 this.drawTime(ctx, size);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	136 this.drawTemps(ctx, size, yRange);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	137 ctx.restore();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	138 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	139 drawTime(ctx, [w, h]) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	140 const minutes = minutesOf(this.timeRange, this.timezone);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	141 for (const [ts, hhmm] of minutes) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	142 const mins = Number(hhmm.split(':')[1]);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	143 let opacity;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	144 if (mins === 0) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	145 opacity = 1;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	146 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	147 else if (mins % 15 === 0) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	148 opacity = 0.5;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	149 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	150 else {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	151 continue;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	152 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	153 const x = project1D(ts, w, this.timeRange);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	154 ctx.save();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	155 ctx.globalAlpha = opacity;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	156 ctx.beginPath();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	157 ctx.moveTo(x, 0);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	158 ctx.lineTo(x, h);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	159 ctx.stroke();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	160 ctx.restore();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	161 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	162 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	163 drawTemps(ctx, [w, h], [yLo, yHi]) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	164 const lo = Math.floor(yLo);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	165 for (let deg = lo; deg < yHi; deg++) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	166 const ones = deg % 10;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	167 let opacity;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	168 if (ones === 0) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	169 opacity = 1;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	170 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	171 else if (ones === 5) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	172 opacity = 0.5;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	173 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	174 else {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	175 opacity = 0.15;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	176 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	177 const y = project1D(deg, h, [yHi, yLo]);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	178 ctx.save();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	179 ctx.globalAlpha = opacity;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	180 ctx.beginPath();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	181 ctx.moveTo(0, y);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	182 ctx.lineTo(w, y);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	183 ctx.stroke();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	184 ctx.restore();
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	185 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	186 }
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	187 size() {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	188 const cssSize = this.element.getBoundingClientRect();
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	189 return [cssSize.width, cssSize.height];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	190 }
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	191 stroke() {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	192 return getComputedStyle(this.element).color;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	193 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	194 font() {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	195 return getComputedStyle(this.element).fontFamily;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	196 }
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	197 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	198 function niceNumber(n) {
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	199 return Math.floor(n).toLocaleString('en-us').replace('-', '−');
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	200 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	201 const EDGE_FRACTION = 0.125;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	202 function calculateYRange(ys) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	203 const yMax = Math.max(...ys);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	204 const yMin = Math.min(...ys);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	205 const yMid = (yMin + yMax) / 2;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	206 const lastY = ys[ys.length - 1];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	207 const yLo = yMid - Y_DEGREE_RANGE / 2;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	208 const yProportion = Math.max(Math.min((lastY - yLo) / Y_DEGREE_RANGE, 1 - EDGE_FRACTION), EDGE_FRACTION);
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	209 const rangeLo = lastY - yProportion * Y_DEGREE_RANGE;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	210 return [rangeLo, rangeLo + Y_DEGREE_RANGE];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	211 }
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	212 function project(coord, size, xRange, yRange) {
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	213 const [x, y] = coord;
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	214 const [yMax, yMin] = yRange;
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	215 const [xSize, ySize] = size;
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	216 return [
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	217 project1D(x, xSize, xRange),
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	218 project1D(y, ySize, [yMin, yMax]),
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	219 ];
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	220 }
33 beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	221 function project1D(coord, size, range) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	222 const [min, max] = range;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	223 const span = max - min;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	224 return (coord - min) / span * size;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	225 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	226 const MINUTE = 60;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	227 function minutesOf([start, end], zone) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	228 const formatter = new Intl.DateTimeFormat('sv', { timeZone: zone, hour: '2-digit', minute: '2-digit' });
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	229 const startSeconds = MINUTE * Math.floor(start / MINUTE);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	230 const result = [];
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	231 for (let t = startSeconds; t <= end; t += MINUTE) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	232 result.push([t, goodBitsOnly(formatter.format(new Date(t * 1000)))]);
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	233 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	234 return result;
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	235 }
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	236 function goodBitsOnly(s) {
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	237 return s.replace(/[^0-9 :-]/, '');
beedfa8eaa3f Add grid lines to the graph. Paul Fisher <paul@pfish.zone> parents: 28 diff changeset	238 }
19 47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	239 });
47987502bf4c Add graph, make it public, and bump the version. Paul Fisher <paul@pfish.zone> parents: diff changeset	240 //# sourceMappingURL=graph.js.map