Tilføj danskHEADmain

1 files changed, 308 insertions, 0 deletions

diff --git a/src/i18n.ts b/src/i18n.ts
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+export type Language = 'en' | 'da';
+
+export const languageOptions: { id: Language; label: string }[] = [
+  { id: 'en', label: 'English' },
+  { id: 'da', label: 'Dansk' },
+];
+
+export interface Chrome {
+  subtitle: string;
+  title: string;
+  documentTitle: string;
+  metaDescription: string;
+  home: string;
+  collection: string;
+  language: string;
+  test: string;
+  experiments: string;
+  overview: string;
+  overviewTitle: string;
+  overviewText: string;
+  score: string;
+  subjects: string;
+  lessons: string;
+  reset: string;
+  original: string;
+  parameters: string;
+  measurements: string;
+  camera: string;
+  pause: string;
+  resume: string;
+  hint: string;
+  notice: string;
+  connect: string;
+  physics: string;
+  learn: string;
+  try: string;
+  scales: string;
+  build: string;
+  reasoning: string;
+  originalAnswers: string;
+  predict: string;
+  reveal: string;
+  hide: string;
+  navigation: string;
+  previous: string;
+  next: string;
+  view: string;
+  viewport: string;
+  study: string;
+  canvas: string;
+  webglStart: string;
+  webglLost: string;
+  experimentKicker: (index: number, total: number) => string;
+  questionKicker: (section: string, question: number, points: number) => string;
+}
+
+const pad = (value: number) => String(value).padStart(2, '0');
+
+const chrome: Record<Language, Chrome> = {
+  en: {
+    subtitle: 'Explore the invisible. Understand the physical.',
+    title: 'Electrotechnique & Electrophysics',
+    documentTitle: 'Test 4 in 3D · Electrophysics Lab',
+    metaDescription: 'Learn electric work, potential energy and dipole rotation through six interactive 3D lessons from Test 4.',
+    home: 'Field Lab home',
+    collection: 'Learning collection',
+    language: 'Language',
+    test: 'Test 4 in 3D',
+    experiments: 'All experiments',
+    overview: 'FROM EQUATIONS TO INTUITION',
+    overviewTitle: 'Electric energy, made visible.',
+    overviewText: 'Explore the six questions from Test 4. Change the scene, make a prediction, then follow the derivation.',
+    score: '6 questions · 3D study guide',
+    subjects: 'Electrophysics subjects',
+    lessons: 'Lessons',
+    reset: 'Reset experiment',
+    original: 'Original test question',
+    parameters: 'Experiment parameters',
+    measurements: 'Live measurements',
+    camera: 'Reset camera',
+    pause: 'Pause animation',
+    resume: 'Resume animation',
+    hint: 'Drag to orbit · Scroll to zoom · Right-drag to pan · Arrow keys to pan when focused',
+    notice: 'NOTICE WHAT CHANGES',
+    connect: 'Connect the scene to the answer',
+    physics: 'THE PHYSICS',
+    learn: 'Learn the physics',
+    try: 'TRY THIS',
+    scales: 'Model & visual scales',
+    build: 'BUILD YOUR ANSWER',
+    reasoning: 'Follow the reasoning',
+    originalAnswers: 'Original answers ↗',
+    predict: 'PAUSE & PREDICT',
+    reveal: 'Reveal explanation',
+    hide: 'Hide explanation',
+    navigation: 'Question navigation',
+    previous: '← Previous question',
+    next: 'Next question →',
+    view: '3D VIEW',
+    viewport: '3D workbench',
+    study: 'Test answers and prediction',
+    canvas: '3D experiment: drag to orbit, scroll to zoom, right-drag to pan',
+    webglStart: 'WebGL could not start. Enable browser hardware acceleration and reload to see the 3D scenes. Lessons, controls and measurements still work.',
+    webglLost: 'WebGL context lost. Reload to restore the 3D view. Numeric experiments still work.',
+    experimentKicker: (index, total) => `EXPERIMENT ${pad(index)} / ${pad(total)}`,
+    questionKicker: (section, question, points) => `TEST ${section} · QUESTION ${question} · ${points} POINTS`,
+  },
+  da: {
+    subtitle: 'Udforsk det usynlige. Forstå fysikken.',
+    title: 'Elektroteknik og elektrofysik',
+    documentTitle: 'Test 4 i 3D · Elektrofysiklaboratoriet',
+    metaDescription: 'Lær elektrisk arbejde, potentiel energi og dipolrotation gennem seks interaktive 3D-lektioner fra Test 4.',
+    home: 'Feltlaboratoriets forside',
+    collection: 'Læringssamling',
+    language: 'Sprog',
+    test: 'Test 4 i 3D',
+    experiments: 'Alle eksperimenter',
+    overview: 'FRA LIGNINGER TIL INTUITION',
+    overviewTitle: 'Elektrisk energi gjort synlig.',
+    overviewText: 'Udforsk de seks spørgsmål fra Test 4. Ændr scenen, forudsig resultatet, og følg derefter udledningen.',
+    score: '6 spørgsmål · 3D-studievejledning',
+    subjects: 'Elektrofysikkens emner',
+    lessons: 'Lektioner',
+    reset: 'Nulstil eksperiment',
+    original: 'Oprindeligt eksamensspørgsmål',
+    parameters: 'Eksperimentparametre',
+    measurements: 'Målinger i realtid',
+    camera: 'Nulstil kamera',
+    pause: 'Sæt animation på pause',
+    resume: 'Genoptag animation',
+    hint: 'Træk for at dreje · Rul for at zoome · Højreklik og træk for at panorere · Piletaster panorerer, når feltet er valgt',
+    notice: 'BEMÆRK, HVAD DER ÆNDRER SIG',
+    connect: 'Forbind scenen med svaret',
+    physics: 'FYSIKKEN',
+    learn: 'Lær fysikken',
+    try: 'PRØV DETTE',
+    scales: 'Model- og visuelle skalaer',
+    build: 'BYG DIT SVAR',
+    reasoning: 'Følg ræsonnementet',
+    originalAnswers: 'Oprindelige svar ↗',
+    predict: 'PAUSE OG FORUDSIG',
+    reveal: 'Vis forklaring',
+    hide: 'Skjul forklaring',
+    navigation: 'Spørgsmålsnavigation',
+    previous: '← Forrige spørgsmål',
+    next: 'Næste spørgsmål →',
+    view: '3D-VISNING',
+    viewport: '3D-arbejdsbord',
+    study: 'Prøvesvar og forudsigelse',
+    canvas: '3D-eksperiment: træk for at dreje, rul for at zoome, højreklik og træk for at panorere',
+    webglStart: 'WebGL kunne ikke starte. Slå browserens hardwareacceleration til, og genindlæs for at se 3D-scenerne. Lektioner, betjening og målinger virker stadig.',
+    webglLost: 'WebGL-konteksten gik tabt. Genindlæs for at gendanne 3D-visningen. De numeriske eksperimenter virker stadig.',
+    experimentKicker: (index, total) => `EKSPERIMENT ${pad(index)} / ${pad(total)}`,
+    questionKicker: (section, question, points) => `TEST ${section} · SPØRGSMÅL ${question} · ${points} POINT`,
+  },
+};
+
+const scenePhrases = {
+  en: {
+    origin: 'Origin',
+    onRightCharge: 'on right charge',
+    gaussian: 'Gaussian surface',
+    probe: 'Probe',
+    isolated: 'isolated',
+    connected: 'supply connected',
+    noCurrent: 'No net current',
+    conventional: 'Conventional current',
+    drift: String.raw`Electron drift · displayed $\times600$`,
+    conduction: 'Conduction band',
+    valence: 'Valence band',
+    midgap: 'midgap',
+    gap: 'gap',
+    energyConstant: 'Energy changes form · total stays constant',
+  },
+  da: {
+    origin: 'Origo',
+    onRightCharge: 'på højre ladning',
+    gaussian: 'Gaussisk flade',
+    probe: 'Sonde',
+    isolated: 'isoleret',
+    connected: 'forsyning tilsluttet',
+    noCurrent: 'Ingen nettostrøm',
+    conventional: 'Konventionel strøm',
+    drift: String.raw`Elektrondrift · vist $\times600$`,
+    conduction: 'Ledningsbånd',
+    valence: 'Valensbånd',
+    midgap: 'båndmidte',
+    gap: 'gab',
+    energyConstant: 'Energien skifter form · summen er konstant',
+  },
+} as const;
+
+export type SceneKey = keyof typeof scenePhrases.en;
+
+const words: Record<Language, Record<string, string>> = {
+  en: {},
+  da: {
+    Repulsive: 'Frastødende',
+    Attractive: 'Tiltrækkende',
+    'On surface': 'På overfladen',
+    Inside: 'Inden for',
+    Outside: 'Uden for',
+    Undefined: 'Udefineret',
+    pairs: 'par',
+  },
+};
+
+const measurementLabels: Record<Language, Record<string, string>> = {
+  en: {},
+  da: {
+    '|E| at origin': '|E| i origo',
+    '|Force on right charge|': '|Kraft på højre ladning|',
+    Interaction: 'Vekselvirkning',
+    'Net electric flux': 'Netto elektrisk flux',
+    'Enclosed charge': 'Indesluttet ladning',
+    'Source location': 'Kildens placering',
+    'Interaction energy': 'Vekselvirkningsenergi',
+    'Work by field, from 6 m': 'Feltets arbejde fra 6 m',
+    '|Force on moving charge|': '|Kraft på den bevægelige ladning|',
+    'Potential at probe': 'Potential ved sonden',
+    'Ex at probe': 'Ex ved sonden',
+    '|E| at probe': '|E| ved sonden',
+    Capacitance: 'Kapacitans',
+    'Stored free charge |Q|': 'Lagret fri ladning |Q|',
+    'Electric field': 'Elektrisk felt',
+    'Stored energy': 'Lagret energi',
+    'Plate voltage': 'Pladespænding',
+    'Free charge |Q|': 'Fri ladning |Q|',
+    'Net field': 'Nettofelt',
+    'Polarization |P|': 'Polarisering |P|',
+    Resistance: 'Resistans',
+    'Conventional current': 'Konventionel strøm',
+    'Electron drift, x': 'Elektrondrift, x',
+    'Dissipated power': 'Afgivet effekt',
+    'Electron density n': 'Elektrontæthed n',
+    'Hole density p': 'Hulletæthed p',
+    'Conductivity σ': 'Ledningsevne σ',
+    'Fermi shift EF − Ei': 'Forskydning af Fermi EF − Ei',
+    'Field work a → b': 'Feltets arbejde a → b',
+    'Work to current position': 'Arbejde til nuværende position',
+    'Potential energy Uᵦ': 'Potentiel energi Uᵦ',
+    'Potential energy U': 'Potentiel energi U',
+    'Kinetic energy K': 'Kinetisk energi K',
+    'Total K + U': 'Samlet K + U',
+    'Particle speed': 'Partikelhastighed',
+    'Potential energy Uₐ': 'Potentiel energi Uₐ',
+    'Energy of current assembly': 'Energi af den aktuelle samling',
+    'Three-charge energy U₁₂₃': 'Tre ladningers energi U₁₂₃',
+    'Additional energy ΔU₀': 'Ekstra energi ΔU₀',
+    'Pairs currently assembled': 'Par samlet nu',
+    'Projection Δx': 'Projektion Δx',
+    'Current angle θ': 'Aktuel vinkel θ',
+    'Torque τz': 'Kraftmoment τz',
+    'Work to current angle': 'Arbejde til aktuel vinkel',
+  },
+};
+
+function storedLanguage(): Language {
+  try {
+    const stored = globalThis.localStorage?.getItem('language');
+    if (stored === 'da' || stored === 'en') return stored;
+  } catch {
+    // Storage can be unavailable in private or non-browser contexts.
+  }
+  return 'en';
+}
+
+let language: Language = storedLanguage();
+const listeners = new Set<() => void>();
+
+export function getLanguage(): Language {
+  return language;
+}
+
+export function setLanguage(next: Language) {
+  language = next;
+  try {
+    localStorage.setItem('language', next);
+  } catch {
+    // Ignore storage failures; the in-memory choice still applies.
+  }
+  if (typeof document !== 'undefined') document.documentElement.lang = next;
+  for (const listener of listeners) listener();
+}
+
+export function onLanguageChange(listener: () => void) {
+  listeners.add(listener);
+  return () => listeners.delete(listener);
+}
+
+export function t<K extends keyof Chrome>(key: K): Chrome[K] {
+  return chrome[language][key];
+}
+
+export function scene(key: SceneKey): string {
+  return scenePhrases[language][key];
+}
+
+export function word(english: string): string {
+  return words[language][english] ?? english;
+}
+
+export function measurementLabel(english: string): string {
+  return measurementLabels[language][english] ?? english;
+}
+
+export const daMeasurementLabels = measurementLabels.da;
+export const daWords = words.da;