initial commit
This commit is contained in:
@@ -0,0 +1,197 @@
|
||||
# FastLED Python Code Investigation
|
||||
|
||||
## Overview
|
||||
This document summarizes the investigation of existing Python code in the FastLED project, particularly focusing on Playwright integration and web scraping capabilities for the FastLED online tool.
|
||||
|
||||
**Location**: All scripts are located in the `ci/ci/scrapers/` directory, organized within the CI infrastructure alongside the existing testing infrastructure, including the original Playwright implementation in `ci/wasm_test.py`.
|
||||
|
||||
## Existing Python Infrastructure
|
||||
|
||||
### Dependencies (pyproject.toml)
|
||||
The project already includes comprehensive dependencies for development and testing:
|
||||
- **Playwright**: `playwright` - for browser automation
|
||||
- **Testing**: `pytest`, `pytest-xdist` for parallel testing
|
||||
- **FastLED**: `fastled>=1.2.26` - the FastLED Python package
|
||||
- **FastLED WASM**: `fastled-wasm` - WebAssembly support
|
||||
- **HTTP Client**: `httpx` - for HTTP requests
|
||||
- **Build Tools**: `uv`, `ziglang`, `ninja`, `cmake`
|
||||
- **Code Quality**: `ruff`, `mypy`, `pyright`, `clang-format`, `isort`, `black`
|
||||
|
||||
### Existing Playwright Implementation (`ci/wasm_test.py`)
|
||||
|
||||
The project already has a sophisticated Playwright setup that:
|
||||
|
||||
1. **Automatic Browser Installation**:
|
||||
```python
|
||||
def install_playwright_browsers():
|
||||
os.system(f"{sys.executable} -m playwright install chromium")
|
||||
```
|
||||
|
||||
2. **FastLED WASM Testing**:
|
||||
- Starts an HTTP server for WASM examples
|
||||
- Tests browser automation with the FastLED.js library
|
||||
- Monitors `FastLED_onFrame` callback execution
|
||||
- Validates WebGL/WASM functionality
|
||||
|
||||
3. **Error Handling**:
|
||||
- Console log monitoring for errors
|
||||
- Timeout handling for page loads
|
||||
- Proper server cleanup
|
||||
|
||||
### MCP Server Integration (`mcp_server.py`)
|
||||
|
||||
The project includes a comprehensive MCP (Model Context Protocol) server with tools for:
|
||||
- Running tests with various options
|
||||
- Compiling examples for different platforms
|
||||
- Code fingerprinting and change detection
|
||||
- Linting and formatting
|
||||
- Project information and status
|
||||
|
||||
## FestivalStick Example Analysis
|
||||
|
||||
### Core Functionality
|
||||
The FestivalStick example (`examples/FestivalStick/`) is a sophisticated LED pattern demo featuring:
|
||||
|
||||
1. **Corkscrew LED Mapping**:
|
||||
- 19.25 turns, 288 LEDs
|
||||
- Maps 2D patterns to spiral LED positions
|
||||
- Uses `fl::Corkscrew` class for geometric calculations
|
||||
|
||||
2. **UI Controls**:
|
||||
- Speed, position, brightness controls
|
||||
- Noise pattern generation with customizable parameters
|
||||
- Color palette selection (Party, Heat, Ocean, Forest, Rainbow)
|
||||
- Rendering mode options (Noise, Position, Mixed)
|
||||
- Color boost with saturation/luminance functions
|
||||
|
||||
3. **Advanced Features**:
|
||||
- Multi-sampling for accurate LED positioning
|
||||
- Real-time noise generation with cylindrical mapping
|
||||
- Auto-advance mode with manual position override
|
||||
- ScreenMap integration for web visualization
|
||||
|
||||
### Key Components
|
||||
```cpp
|
||||
// Corkscrew configuration
|
||||
#define NUM_LEDS 288
|
||||
#define CORKSCREW_TURNS 19.25
|
||||
|
||||
// Runtime corkscrew with flexible configuration
|
||||
Corkscrew::Input corkscrewInput(CORKSCREW_TURNS, NUM_LEDS, 0);
|
||||
Corkscrew corkscrew(corkscrewInput);
|
||||
|
||||
// Frame buffer for 2D pattern drawing
|
||||
fl::Grid<CRGB> frameBuffer;
|
||||
|
||||
// ScreenMap for web interface visualization
|
||||
fl::ScreenMap corkscrewScreenMap = corkscrew.toScreenMap(0.2f);
|
||||
```
|
||||
|
||||
## Web Scraping Script Implementation
|
||||
|
||||
### Script Features (`scrape_festival_stick.py`)
|
||||
|
||||
1. **Robust Web Navigation**:
|
||||
- Navigates to https://fastled.onrender.com/docs
|
||||
- Handles dynamic content loading
|
||||
- Searches for multiple possible interface elements
|
||||
|
||||
2. **Smart Element Detection**:
|
||||
- Looks for example selection dropdowns
|
||||
- Detects file upload capabilities
|
||||
- Finds canvas/visualization elements
|
||||
- Searches for FestivalStick-specific content
|
||||
|
||||
3. **Screenshot Capabilities**:
|
||||
- Full page screenshots with timestamps
|
||||
- Focused canvas screenshots when available
|
||||
- Error screenshots for debugging
|
||||
- Multiple resolution support (1920x1080 default)
|
||||
|
||||
4. **File Upload Attempt**:
|
||||
- Automatically tries to upload `FestivalStick.ino`
|
||||
- Handles missing file scenarios gracefully
|
||||
- Waits for upload processing
|
||||
|
||||
### Script Workflow
|
||||
1. Install Playwright browsers automatically
|
||||
2. Launch visible browser with slow motion for debugging
|
||||
3. Navigate to online FastLED tool
|
||||
4. Search for example/upload functionality
|
||||
5. Attempt to load FestivalStick example
|
||||
6. Capture screenshots of the visualization
|
||||
7. Save timestamped results to `screenshots/` directory
|
||||
|
||||
## Project Testing Infrastructure
|
||||
|
||||
### Unit Tests
|
||||
- Location: `tests/` directory
|
||||
- Command: `bash test` (per user rules)
|
||||
- Comprehensive C++ unit tests for all components
|
||||
- Platform compilation tests
|
||||
- Code quality checks
|
||||
|
||||
### Example Compilation
|
||||
- Multi-platform support: `uno`, `esp32`, `teensy`, etc.
|
||||
- Command: `./compile <platform> --examples <example_name>`
|
||||
- Batch compilation for multiple platforms
|
||||
- Interactive and automated modes
|
||||
|
||||
## Key Findings
|
||||
|
||||
1. **Comprehensive Infrastructure**: The FastLED project already has extensive Python tooling with Playwright, testing, and web automation capabilities.
|
||||
|
||||
2. **Advanced LED Visualization**: The FestivalStick example represents sophisticated LED pattern generation with real-time parameter control and web visualization.
|
||||
|
||||
3. **Web Integration Ready**: The existing WASM testing infrastructure provides a solid foundation for web-based LED visualization and interaction.
|
||||
|
||||
4. **Documentation Gap**: While the code is well-implemented, there could be more comprehensive documentation of the web tooling capabilities.
|
||||
|
||||
## Recommendations
|
||||
|
||||
1. **Extend Web Scraping**: The created script could be enhanced to:
|
||||
- Test multiple examples automatically
|
||||
- Capture video recordings of animations
|
||||
- Perform parameter sweeps for different configurations
|
||||
|
||||
2. **Integration Testing**: Consider adding the web scraping script to the CI/CD pipeline for automated web interface testing.
|
||||
|
||||
3. **User Documentation**: Create user guides for the online FastLED tool and example usage.
|
||||
|
||||
## Results
|
||||
|
||||
✅ **Successfully captured screenshot**: `ci/ci/scrapers/screenshots/festival_stick_20250620_224055.png` (82KB)
|
||||
|
||||
The script successfully:
|
||||
1. Navigated to https://fastled.onrender.com/docs
|
||||
2. Detected and interacted with the FastLED web interface
|
||||
3. Captured a full-page screenshot of the FestivalStick example visualization
|
||||
4. Saved the result with timestamp for easy identification
|
||||
|
||||
## Files Created/Modified
|
||||
|
||||
- `ci/ci/scrapers/scrape_festival_stick.py` - Main web scraping script with Playwright automation
|
||||
- `ci/ci/scrapers/run_fastled_scraper.py` - Utility script for easy execution with different configurations
|
||||
- `ci/ci/scrapers/screenshots/` - Directory containing captured images
|
||||
- `ci/ci/scrapers/screenshots/festival_stick_20250620_224055.png` - Successfully captured screenshot (82KB)
|
||||
- `ci/ci/scrapers/fastled_python_investigation.md` - This documentation file
|
||||
|
||||
## Usage Examples
|
||||
|
||||
```bash
|
||||
# Run the scraper directly from project root
|
||||
uv run ci/ci/scrapers/scrape_festival_stick.py
|
||||
|
||||
# Use the utility script with options
|
||||
uv run ci/ci/scrapers/run_fastled_scraper.py --example FestivalStick --headless --timeout 60
|
||||
|
||||
# Make scripts executable and run from project root
|
||||
chmod +x ci/ci/scrapers/scrape_festival_stick.py ci/ci/scrapers/run_fastled_scraper.py
|
||||
./ci/ci/scrapers/scrape_festival_stick.py
|
||||
./ci/ci/scrapers/run_fastled_scraper.py --help
|
||||
|
||||
# Or run from within the scrapers directory
|
||||
cd ci/ci/scrapers
|
||||
uv run scrape_festival_stick.py
|
||||
uv run run_fastled_scraper.py --help
|
||||
```
|
||||
Reference in New Issue
Block a user