TitanML — AI Knowledge Nexus

An interactive knowledge graph and visual encyclopedia for AI/ML concepts. Built with Next.js 16, featuring a canvas-based force-directed graph, architecture visualizer, and structured learning paths.

Features

• Interactive Knowledge Graph — Canvas-rendered force-directed graph with physics simulation, spatial grid optimization, and smooth zoom/pan. Click nodes to explore term definitions, relationships, and code examples.
• Architecture Visualizer — Visual flowcharts of AI architectures (RAG, Agentic, fine-tuning pipelines) with step-by-step breakdowns.
• Knowledge Paths — Curated learning curricula with difficulty levels, from foundational ML concepts to advanced topics like multi-agent systems.
• Dark Mode — Comprehensive theme system with 50+ CSS variables, smooth transitions, and canvas-aware dark rendering.
• Search — Debounced full-text search across term names, descriptions, and tags with real-time graph highlighting.
• Add Terms — Contribute new AI concepts directly through the in-app modal form.
• Keyboard Shortcuts — / to focus search, Escape to close panels, Alt+Arrow for history navigation.
• Touch Support — Pinch-zoom and tap-to-select on mobile devices.

Tech Stack

Layer	Technology
Framework	Next.js 16 (App Router, Turbopack)
Language	TypeScript
Styling	Custom CSS with CSS variables, @property animations
State	Zustand (atomic selectors for render optimization)
Graph Engine	Custom Canvas 2D — force-directed physics, spatial grid partitioning, lerp-smoothed camera
Font	Plus Jakarta Sans (Google Fonts)

Project Structure

src/
├── app/
│   ├── globals.css          # Base reset, loading screen, toast, panel/modal animations,
│   │                         # scrollbar, code blocks, tooltip, accessibility
│   ├── layout.tsx           # Root layout (meta, fonts, CSS imports)
│   └── page.tsx             # Main page — LoadingScreen, Toast, Home (data orchestrator),
│                             # AppContent (all UI split into prop-driven component)
├── lib/
│   └── graph-engine.ts      # Canvas knowledge graph engine (~1010 lines)
│       ├── Physics: spatial grid O(n) neighbor lookup, repulsion/attraction/gravity
│       ├── Rendering: radial gradient bg, cached dot grid, curved edges with arrows,
│       │             quantum packet animations, gradient-filled nodes with glow
│       ├── Interaction: mouse drag/pan, wheel zoom (lerp-smoothed), touch pinch-zoom
│       ├── Performance: dirty flag + idle frame skipping with full rAF stop/wake,
│       │              label truncation cache, sorted node draw order cache
│       └── Dark mode: full theme swap via setDarkMode()
├── store/
│   └── useTitanMLStore.ts   # Zustand store — all app state and actions
└── public/
    ├── css/
    │   ├── styles.css           # Main component styles + dark mode overrides
    │   ├── architectureStyles.css  # Architecture gallery & flow visualizer
    │   └── knowledgePath.css       # Knowledge path gallery & timeline
    ├── data/
    │   ├── graphData.json      # Categories & terms with relationships
    │   ├── architecture.json   # Architecture definitions with steps
    │   └── knowledgePath.json  # Learning paths with steps/subpaths
    └── assets/

Architecture Decisions

Render Optimization

• Atomic Zustand selectors — Each UI section subscribes to only the state slices it needs, preventing unnecessary re-renders when unrelated state changes.
• AppContent extraction — The main UI is a separate function component from the data-loading orchestrator, allowing React to skip the entire AppContent tree during loading.
• useMemo for derived data — relatedTerms, selectedTermCategory, and currentArch are memoized to avoid recomputation on every render.
• Graph engine idle stopping — The canvas render loop fully stops after 60 idle frames (~1s at 60fps), then wakes on user interaction via _wake(). Saves CPU and battery.
• Sorted node draw cache — Node sort order (for z-ordering) is cached and only recomputed when selection changes via _sortedDirty flag.
• Label truncation cache — Truncated labels are cached by nodeId:maxLabelPx and cleared on data reload.

Memory Management

• Proper cleanup — Graph engine destroy() clears all arrays, maps, caches, event listeners, and canvas references. ResizeObserver is disconnected on unmount.
• No dead code — Unused files (db.ts, utils.ts, api/route.ts, components/ui/, hooks/) removed. Unused codeBlockRef eliminated.
• Event listener tracking — Graph engine tracks all bound listeners in _boundListeners[] for complete cleanup.

Animation System

• Loading screen — Dual-ring spinner with CSS @keyframes, emoji rotation, fade-in on mount via loaderFadeIn keyframe, and fade-out + scale transition on data load. Loader is conditionally rendered (removed from DOM after fade-out).
• Toast — Spring-based entrance (translateY + scale + opacity) and smooth exit animation with 300ms crossfade.
• View transitions — Architecture and knowledge path views conditionally render with key prop, triggering viewFadeIn animation on each navigation.
• Panel — Slides in with spring transition from styles.css. Panel sections stagger-animate on open.
• Modal — Overlay fades in, modal scales up with spring. Form fields stagger-animate.
• Interactive elements — Category/filter items translate on hover, buttons scale on press, related terms lift with shadow.

Bug Fixes (Godmode Audit)

• L1: Hydration mismatch — suppressHydrationWarning on both <html> and <body> to handle browser extension attribute injection.
• L1: _drawNodes array mutation — Node drawing uses a separate _sortedNodes copy instead of mutating this.nodes during iteration.
• L2: Critical getTerm ReferenceError — graph.onNodeSelect callback was calling undefined getTerm(). Fixed to use useTitanMLStore.getState().terms.find().
• L2: Loading screen double-trigger — loaderFading state was set but never applied to className. Now conditionally renders the fade-out loader div.
• L2: Canvas render loop — Added full rAF stop after 60 idle frames + _wake() mechanism on all interaction handlers.
• L2: Label truncation cache — _labelCache now cleared in loadData() to prevent stale entries after data reload.
• L2: Panel/Modal entrance animations — Added staggered section animations and form field animations.
• L3: Visitor counter — Repositioned to bottom-right corner, subtler opacity.
• L3: Code block — Removed unused codeBlockRef. Copy button is fully inline React state. Added padding-top: 40px for button clearance.
• L3: View transitions — Architecture and knowledge path views now conditionally render with keys, triggering proper viewFadeIn animation each time.
• L3: Accessibility — Added :focus-visible styles and :focus:not(:focus-visible) reset.
• L3: Dead code — Removed db.ts, utils.ts, api/route.ts, components/ui/, hooks/.

Getting Started

# Install dependencies
npm install

# Development server
npm run dev

# Production build
npm run build
npm start

Open http://localhost:3000 in your browser.

Credits

Created by Abhishek Shah — Portfolio | Email

License

All rights reserved.