Codebase_overview.MD

Spectrometer Codebase Overview

Core Architecture

Module Structure

Core Modules
├── Input (camera.js)
├── Processing (imageProcessor.js)
├── Visualization (spectragraph.js)
├── Control (main.js)
└── Export (recordingManager.js)

Extension Points
├── Input Handlers
├── Processing Pipelines
├── Visualization Layers
└── Export Formats

Core Modules

1. Input Module (camera.js)

Base Functionality
├── Device Management
│   ├── Device enumeration
│   └── Stream control
├── Frame Capture
│   ├── Raw frame acquisition
│   └── Format conversion
└── Extension Points
    ├── Custom input sources
    └── Pre-processing filters

2. Processing Module (imageProcessor.js)

Base Functionality
├── Region Processing
│   ├── ROI extraction
│   └── Intensity calculation
├── Wavelength Mapping
│   ├── Calibration
│   └── Conversion
└── Extension Points
    ├── Custom processing pipelines
    ├── Additional corrections
    └── Analysis algorithms

3. Visualization Module (spectragraph.js)

Base Functionality
├── Display Engine
│   ├── Grid system
│   └── Spectrum plotting
├── Interaction Handler
│   ├── Zoom/Pan
│   └── Data inspection
└── Extension Points
    ├── Custom overlays
    ├── Additional visualizations
    └── Interactive tools

4. Control Module (main.js)

Base Functionality
├── Module Coordination
│   ├── Initialization
│   └── Communication
├── Event Management
│   ├── UI events
│   └── Data flow
└── Extension Points
    ├── Custom workflows
    ├── Additional controls
    └── State management

5. Export Module (recordingManager.js)

Base Functionality
├── Data Export
│   ├── CSV generation
│   └── Frame capture
├── Recording
│   ├── Video recording
│   └── Data logging
└── Extension Points
    ├── Custom formats
    ├── Export processors
    └── Metadata handlers

Data Flow Interfaces

Input Interface

/**
 * @interface InputSource
 * Base interface for all input sources
 * 
 * @method initialize - Initializes the input source
 * @method getFrame - Returns the current frame as ImageData
 * @method getMetadata - Returns metadata about the current frame
 */
class InputSource {
    async initialize() {}
    getFrame() { return new ImageData(1920, 1080); }
    getMetadata() { return {}; }
}

Processing Interface

/**
 * @interface ProcessingPipeline
 * Base interface for all processing pipelines
 * 
 * @method processFrame - Processes a single frame
 * @method applyCorrections - Applies corrections to spectral data
 */
class ProcessingPipeline {
    processFrame(frame) { return { wavelengths: [], intensities: [] }; }
    applyCorrections(data) { return data; }
}

Visualization Interface

/**
 * @interface VisualizationLayer
 * Base interface for all visualization layers
 * 
 * @method draw - Renders the layer to the canvas context
 * @method handleInteraction - Handles user interaction events
 */
class VisualizationLayer {
    draw(context) {}
    handleInteraction(event) {}
}

Export Interface

/**
 * @interface ExportHandler
 * Base interface for all export handlers
 * 
 * @method formatData - Formats spectral data for export
 * @method generateOutput - Generates the output file
 */
class ExportHandler {
    formatData(data) { return data; }
    generateOutput(format) {}
}

Extension Guidelines

Adding New Input Sources

1. Implement InputSource interface
2. Register with Input Module
3. Add necessary UI controls
4. Handle source-specific metadata

Creating Processing Pipelines

1. Implement ProcessingPipeline interface
2. Define correction algorithms
3. Add pipeline configuration
4. Register with Processing Module

Developing Visualization Features

1. Implement VisualizationLayer interface
2. Define rendering methods
3. Add interaction handlers
4. Register with Visualization Module

Adding Export Formats

1. Implement ExportHandler interface
2. Define format conversion
3. Add export controls
4. Register with Export Module

State Management

Core State

/**
 * Core application state structure
 * @typedef {Object} CoreState
 * @property {Object} inputConfig - Input device configuration
 * @property {Object} processingConfig - Processing pipeline settings
 * @property {Object} displayConfig - Display and visualization settings
 * @property {Object} exportConfig - Export format configuration
 */
const coreState = {
    inputConfig: {},
    processingConfig: {},
    displayConfig: {},
    exportConfig: {}
};

Module State

• Each module maintains its internal state
• State changes propagate through event system
• Modules can subscribe to relevant state updates

Event System

/**
 * Event types enumeration
 * @enum {string}
 */
const EventType = {
    INPUT_CHANGED: 'input_changed',
    PROCESSING_UPDATED: 'processing_updated',
    DISPLAY_CHANGED: 'display_changed',
    EXPORT_REQUESTED: 'export_requested'
    // Extensible for new features
};

Event Handling

• Centralized event bus in Control Module
• Modular event subscription
• Async event processing support

Performance Optimization Points

Input Optimization

• Frame rate control
• Resolution adaptation
• Buffer management

Processing Optimization

• Worker thread processing
• Batch processing
• Memory pooling

Display Optimization

• Canvas layer management
• Render throttling
• WebGL acceleration

Export Optimization

• Streaming export
• Compression
• Background processing

Development Workflow

Adding New Features

1. Identify target module
2. Implement required interfaces
3. Add necessary UI elements
4. Register with core system
5. Add documentation
6. Update tests

Module Integration

1. Define module interface
2. Implement state management
3. Add event handlers
4. Register extension points
5. Update documentation

Testing Framework

Test Categories

Tests
├── Unit Tests
│   ├── Module functions
│   └── Interface compliance
├── Integration Tests
│   ├── Module interaction
│   └── Data flow
└── Extension Tests
    ├── Plugin compatibility
    └── Performance impact