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Flow Chart Software - Requirements Documentation

Project Overview

A revolutionary flow chart software designed to create, edit, and visualize complex diagrams with stunning performance and ease of use.

Core Requirements

1. Visual Diagramming Core

  • Drag and Drop Interface: Create nodes, edges, and connections with mouse
  • Multi-format Node Types: Decision, Process, Start/End, Database, External Systems, etc.
  • Connection Types: Straight, curved, orthogonal, and animated flows
  • Auto-layout Algorithms: Force-directed, hierarchical, circular layouts
  • Responsive Canvas: Infinite panning and zooming with smooth scroll
  • Grid Alignment: Snap-to-grid and magnetic alignment guides

2. Editing & Interaction

  • Node Properties Panel: Customize colors, fonts, labels, and behaviors
  • Context Menus: Right-click actions for nodes and connections
  • Keyboard Shortcuts: Comprehensive shortcut system for power users
  • Multi-selection: Select and manipulate multiple elements simultaneously
  • Copy/Paste/Export: Export diagrams to JSON, PNG, SVG, and other formats
  • Version Control: History tracking and undo/redo functionality

3. Advanced Visual Features

  • Custom Themes: Dark/Light modes with custom color schemes
  • Export to Image: High-resolution PNG/SVG export
  • Animation Support: Flow animations, transitions, and triggers
  • Collaboration Features: Real-time sharing and editing
  • Template Library: Pre-built diagram templates

4. Performance Requirements

  • Complex Diagram Support: Handle 1000+ nodes and connections efficiently
  • WebGL Rendering: Hardware-accelerated 3D visualizations
  • Memory Management: Efficient garbage collection for large diagrams
  • Responsive UI: Sub-100ms interaction times
  • Offline Capability: Local storage and performance without internet

5. Technical Specifications

  • Framework: React + Three.js + Node.js
  • Frontend: Electron + Web Technologies
  • Backend: RESTful API with WebSocket support
  • Database: PostgreSQL for user data and diagram storage
  • Real-time: Socket.io for live collaboration

Implementation Phases

Phase 1: Core MVP (Week 1-2)

  • Basic node/edge creation and manipulation
  • Simple save/load functionality
  • Basic UI with drag-and-drop

Phase 2: Advanced Features (Week 3-4)

  • Auto-layout algorithms
  • Export/import functionality
  • Custom themes and styles

Phase 3: Performance & Advanced (Week 5-6)

  • Real-time collaboration
  • WebGL rendering
  • Advanced export formats

Phase 4: polish & Deploy (Week 7-8)

  • Cross-platform packaging
  • Store integration
  • Documentation

Architecture

Frontend (Electron)
├── React Components
├── Three.js Canvas
├── WebSocket Client
├── State Management (Redux)
├── UI Framework (Material-UI/Chakra)

Backend (Node.js)
├── Express Server
├── WebSocket Server
├── PostgreSQL Database
├── File Storage (S3/MinIO)
├── Authentication (JWT)
└── API Documentation (Swagger)

Technologies Stack

Frontend

  • Framework: React 18 + Electron 24
  • Visualization: Three.js + D3.js for advanced diagrams
  • State: Redux Toolkit
  • Styling: Tailwind CSS + Emotion
  • UI: Material-UI components
  • Build: Webpack 5 with Vite integration

Backend

  • Runtime: Node.js 18+
  • Framework: Express.js
  • Database: PostgreSQL 15+
  • Real-time: Socket.io
  • Security: CORS, Rate Limiting, Helmet
  • Deployment: Docker + Kubernetes

DevOps

  • CI/CD: GitHub Actions
  • Testing: Jest + Cypress
  • Documentation: Swagger/OpenAPI
  • Monitoring: PM2 + Logtail

User Stories

Basic Users

  1. "I need to create a simple workflow diagram quickly"
  2. "I want to share my flowcharts with my team"
  3. "I need to export my diagrams for reports"

Power Users

  1. "I need to create complex process flows with automation"
  2. "I want to collaborate in real-time with my team"
  3. "I need advanced analytics for my diagrams"

Enterprise Users

  1. "I need role-based access control for my organization"
  2. "I need integration with existing tools and systems"
  3. "I need audit trails and versioning"

Success Metrics

Technical

  • 95% test coverage
  • <100ms page load time
  • 99.9% uptime SLA
  • <100MB bundle size

User Experience

  • <2s first diagram creation time

  • 90% user satisfaction rate

  • <10 support tickets per 1000 users

  • 80% feature adoption rate

Business

  • 10,000+ active users in first month
  • 90% conversion from free to paid
  • 30-day average revenue per user >$5

Timeline

Week 1: Setup development environment, create basic UI structure Week 2: Implement core diagramming functionality Week 3: Add advanced visualization features Week 4: Implement collaboration and export features Week 5: Performance optimization and testing Week 6: Documentation and deployment setup Week 7-8: Beta testing and market launch

Risk Assessment

Risk Probability Impact Mitigation
Performance issues with large diagrams High High Incremental testing, lazy loading
Team collaboration complexity Medium Medium Phased rollout, thorough testing
Cross-browser compatibility Medium Medium Browser testing matrix
Security vulnerabilities Low Critical Regular security audits

Next Steps

  1. Set up development environment
  2. Create project scaffolding
  3. Implement basic node/edge creation
  4. Add save/load functionality
  5. Build UI components
  6. Implement real-time features
  7. Add export capabilities
  8. Launch MVP