6afe928c0d
feat(labs): visual polish wave — LabFX foundation + 33 sims juiced up
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ФУНДАМЕНТ (4 новых файла):
- _fx_core.js: LabFX namespace, glow.drawGlow, glow.pulse, haptic, shake
- _fx_particles.js: пул 1500 объектов, 6 shapes (dot/spark/ring/smoke/splash/dust)
- _fx_motion.js: tween + 12 easings + critically-damped spring
- _fx_sound.js: 9 procedural synth-звуков (click/tick/whoosh/chime/fizz/spark/bounce/pour/drone), Web Audio API
- Sound toggle в шапке lab.html с localStorage-persist
UX МИКРО (CSS + JS):
- Button states: hover scale+brightness, active scale-down, disabled grayscale
- Slider polish: custom thumb с тенью, filled-track gradient, hover/active
- Focus rings через :focus-visible
- Tooltip system .tt-host data-tt= с 400ms hover, fade-in
- Marching ants для selection
- Loading skeleton с shimmer
- Empty state .sim-empty-* паттерн
- Toast: progress bar внизу, icons по типу
- Cursor states utility classes
- View Transitions API для smooth sim-switch, fallback на CSS fade
PHASE 2 — визуальные эффекты для 33 симуляций:
Physics motion: projectile (launch whoosh + landing splash/shake/haptic + target chime), pendulum (max-extension tick + bob glow), collision (bounce + sparks + shake), angrybirds (whoosh/bounce/fizz/chime + confetti), newton (rocket flame trail + scene transitions), forcesandbox (spring glow + impact sparks)
Physics fields: emfield (field-lines glow + particle trail + lightning при high field + Gauss-drag haptic + rod motion sparks), circuit (energized-wire glow ∝ current + LED bloom + short-circuit shake/spark + heat shimmer smoke + place/erase/switch sounds), opticsbench (beam glow на всех режимах + caustics dust у фокуса + TIR/Brewster one-shot sounds)
Thermo+waves: waves (mode-switch whoosh + Mach-cone particles + spectrum harmonic chime + waveform glow), hydrostatics (pour sound + splash при погружении + valve click), isoprocess (PV-trail dust), heatengine (drone цикла + hot/cold reservoir smoke/dust + phase-change ticks), radioactive (Geiger tick throttle + decay sparks + half-life chime + α/β/γ glow)
Chemistry: chemsandbox (pour splash + fizz bubbles/dust/spark по типу реакции + shake при горении), equilibrium/electrolysis/reactions/titration/flask/ionexchange/redox (pour/fizz/spark/chime по событиям, частицы при ключевых моментах), stoichiometry (fizz bubbles + recipe-change click)
Math+geom: geometry (tool-click + object-create tick + locus glow + challenge confetti via LabFX + haptic), triangle (vertex-drop tick + special-point glow), stereo (figure-change whoosh + cross-section chime, no particles — Three.js), trigcircle (drag-haptic + pitch∝angle tick + sin/cos glow), graph/graphtransform/quadratic (slider-tick throttled + curve glow + discriminant-cross chime), probability (bounce + finish-chime burst), normaldist (pulsing shade + bell glow)
Bio+misc: celldivision (phase-change whoosh + prophase dust + anaphase poles spark + cytokinesis chime), photosynthesis (photon tick + ATP chime + glucose sparkle), bohratom (electron-jump chime ∝ levels + photon spark), orbitals/crystal (mode-change whoosh — Three.js, sound only), logic (gate-place + wire-connect + LED bloom + HIGH wire flowing dots + preset chime), gas/brownian/diffusion/states (preset whoosh, throttled tick по событиям)
Все LabFX вызовы обёрнуты в if (window.LabFX) guard — graceful degradation если фундамент не загружен. 47 JS файлов прошли syntax check.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com >
2026-05-23 13:58:49 +03:00
8f30a8cef6
feat(labs): wave 2 — depth features across 6 sims
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Электрические цепи (circuit):
- Индуктивность L как новый компонент (1–1000 мГн, шорт в DC, jωL в AC)
- RLC preset для демонстрации резонанса
- Осциллограф: U(t)/I(t) для выбранного компонента, 100 sample, dual-axis
- Heatmap мощности: радиальный градиент halo от blue→red пропорционально P=UI
Стереометрия 3D (stereo):
- Сечение через 3 произвольные точки: pick на гранях/рёбрах/вершинах
- Плоскость + полигон пересечения с авто-определением типа (3–6-угольник) и площадью
- Step-by-step режим: визуализация P1→линия→P2→линия→P3→плоскость→сечение
- Поддержка всех solids (включая cylinder/cone через sampling fallback)
Планиметрия (geometry):
- Задачник framework: CHALLENGES[] с setup/check функциями
- 5 стартовых задач: серединный перпендикуляр, биссектриса, описанная окружность, ГМТ, касательная
- Авто-checker: толерантности ±0.5° для углов, ±1–5% для расстояний
- UI: collapsible панель с статус-иконками, конфетти + «Молодец!» на success
Электромагнитные поля (emfield):
- Preset «Тороид»: 16+16 проводов в концентрических кольцах
- Поверхность Гаусса: draggable круг, считает Φ = q_enc/ε₀, подсвечивает охваченные заряды
- Motional EMF: draggable rod, arrow-keys управление, считает ε = ∫(v×B)·dl
Химическая песочница (chemsandbox):
- Live-overlay с уравнением реакции: молекулярное / полное ионное / сокращённое ионное
- Coverage: 49/49 молекулярных, 34/49 ионных, 36/49 сокращённых
- Auto-hide через 5 сек, fade-in animation, цветовая кодировка типов
Волны и звук (waves):
- Doppler: source+observer drag, expanding wavefronts, f_obs формула, Mach cone при v>c
- Beats: f1+f2, sum waveform с envelope, индикация f_beat=|f1-f2|
- Spectrum (DFT): N=256 samples pure JS, bar-chart с пиками и labels, «Добавить гармонику»
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com >
2026-05-23 12:48:14 +03:00
ae31e4c4e8
refactor: distribute lab-init.js into 34 engine files
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lab-init.js: 4098 -> 543 lines (infrastructure + THEORY only)
Each sim's _open*() + UI helpers moved to its engine file:
graph.js, projectile.js, collision.js, magnetic.js, triangle.js,
geometry.js, trigcircle.js, gas.js (molphys), coulomb.js, circuit.js,
reactions.js (chemistry), newton.js (dynamics), chemsandbox.js,
celldivision.js, photosynthesis.js, angrybirds.js, quadratic.js,
normaldist.js, graphtransform.js, pendulum.js, equilibrium.js,
thinlens.js, mirror.js, isoprocess.js, titration.js, refraction.js,
probability.js, bohratom.js, electrolysis.js, waves.js,
crystal.js, orbitals.js, stereo.js, hydrostatics.js
All 34 engine files syntax-checked OK.
2026-05-08 14:54:54 +03:00
fd29acbbdd
feat: WebSocket real-time + rAF render gate + guest board + screen picker
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Classroom performance:
- WebSocket server (ws-server.js) for low-latency cursor & stroke preview
Replaces HTTP POST per event → eliminates per-message auth overhead
Session member cache (30s TTL) avoids SQLite query per WS message
Fallback to HTTP POST when WS not connected
- Cursor throttle reduced 100ms → 33ms (~30fps)
- Stroke preview throttle reduced 50ms → 20ms
- whiteboard.js: render() is now rAF-gated (_doRender/_rafPending)
Multiple render() calls within one frame collapse into one repaint
document.hidden check — zero CPU when tab is in background
visibilitychange listener restores canvas on tab focus
Guest board:
- guestClassroom.js route: public token-based read-only access
- guest-board.html: name entry + read-only whiteboard + SSE
- SSE: addGuestClient/removeGuestClient/emitToGuests
Screen share picker:
- Discord-style modal with tab switching (screen/window/tab)
- Live video preview before confirming share
- useExistingScreenStream() in ClassroomRTC
Fullscreen exit overlay:
- #cr-fs-exit-overlay button inside cr-board-wrap
- Visible only via CSS :fullscreen selector (touchpad users)
File sharing from library:
- Teacher picks file from library, sends as styled card in chat
- crDownloadLibraryFile() fetches with Bearer auth
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-04-13 18:04:59 +03:00
be4d43105e
LearnSpace: full-stack educational whiteboard platform
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Node.js/Express backend + vanilla JS frontend.
Features: real-time collaborative whiteboard (SSE), multi-page support,
LaTeX formulas, shapes/connectors, coordinate systems, number lines,
compass, zoom/pan, Catmull-Rom pencil smoothing, ruler/protractor with
rotation & resize controls, minimap navigation overlay, auto-measurements,
multi-page thumbnails sidebar, PNG export, page templates.
Student/teacher workflows: classes, assignments, library, dashboard.
Mobile responsive. SQLite (better-sqlite3).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com >
2026-04-12 10:10:37 +03:00
Maxim Dolgolyov