56 lines
2.2 KiB
JavaScript
56 lines
2.2 KiB
JavaScript
// Browser-safe. Geometry for the roast-curve SVG grid (viewBox 0 0 714 334), matching
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// manual-roast-planner.html's worksheet box 10 grid exactly.
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import { MACHINE } from "./reference-data.js?v=20260730-release2";
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export const PLOT = { x0: 52, x1: 652, y0: 24, y1: 294, tMaxS: 900 };
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export function tToX(seconds) {
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const clamped = Math.max(0, Math.min(PLOT.tMaxS, seconds));
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return PLOT.x0 + (clamped / PLOT.tMaxS) * (PLOT.x1 - PLOT.x0);
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}
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// 60C -> y294 (bottom axis), 200C label sits at y42 (confirmed by the FC band rect y=65.4,h=19.8 = 176-187C)
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export function tempToY(degC) {
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return PLOT.y1 - (degC - 60) * 1.8;
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}
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export function rorToY(rorCPerMin) {
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return PLOT.y1 - rorCPerMin * 9;
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}
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/** Build the five plan-curve points from the ledger + box-8 temps, falling back to machine medians. */
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export function buildPlanCurve(plan, ledger) {
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const temps = plan.temps ?? {};
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const num = (v) => {
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const n = Number.parseFloat(v);
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return Number.isFinite(n) ? n : null;
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};
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const points = [
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{ key: "charge", label: "Charge", timeS: 0, tempC: num(temps.charge?.tempC) ?? MACHINE.charge.medianC },
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{ key: "tp", label: "Turning point", timeS: parseTpTime(temps.tp?.time), tempC: num(temps.tp?.tempC) ?? MACHINE.turningPoint.medianC },
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{ key: "yellow", label: "Yellow", timeS: ledger.yellow, tempC: num(temps.yellow?.tempC) ?? MACHINE.yellow.medianC },
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{ key: "fc", label: "First crack", timeS: ledger.A, tempC: num(temps.fc?.tempC) ?? MACHINE.firstCrack.medianC },
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{ key: "drop", label: "Drop", timeS: ledger.D, tempC: num(temps.drop?.tempC) ?? MACHINE.drop.medianC },
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];
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return points.filter((p) => p.timeS !== null && p.timeS !== undefined);
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}
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function parseTpTime(str) {
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if (!str) return 52; // MACHINE.turningPoint.medianTime, "0:52"
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const m = String(str).match(/^(\d+):(\d{1,2})$/);
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if (!m) return null;
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return Number(m[1]) * 60 + Number(m[2]);
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}
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/** Build an SVG <path> "d" string through points, sorted by time, plain polyline (no kink invented). */
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export function pointsToPathD(points) {
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const sorted = [...points].sort((a, b) => a.timeS - b.timeS);
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if (sorted.length === 0) return "";
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return sorted
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.map((p, i) => `${i === 0 ? "M" : "L"}${tToX(p.timeS).toFixed(1)},${tempToY(p.tempC).toFixed(1)}`)
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.join(" ");
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}
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