# Examples

This directory contains example scripts demonstrating how to use Mainline's features.

## Default Visualization

**`default_visualization.py`** - Renders the standard Mainline visualization using the graph-based DSL.

```bash
python examples/default_visualization.py
```

This script demonstrates:
- Graph-based pipeline configuration using TOML
- Default Mainline behavior: headlines source, scroll camera, terminal display
- Classic effects: noise, fade, glitch, firehose
- One-shot rendering (prints to stdout)

### Configuration

The visualization is defined in `default_visualization.toml`:

```toml
[nodes.source]
type = "source"
source = "headlines"

[nodes.camera]
type = "camera"
mode = "scroll"
speed = 1.0

[nodes.noise]
type = "effect"
effect = "noise"
intensity = 0.3

[nodes.fade]
type = "effect"
effect = "fade"
intensity = 0.5

[nodes.display]
type = "display"
backend = "terminal"

[connections]
list = ["source -> camera -> noise -> fade -> display"]
```

## Graph DSL Demonstration

**`graph_dsl_demo.py`** - Demonstrates the graph-based DSL in multiple ways:

```bash
python examples/graph_dsl_demo.py
```

Shows:
- Imperative Python API for building graphs
- Dictionary-based API
- Graph validation (cycles, disconnected nodes)
- Different node types and configurations

## Integration Test

**`test_graph_integration.py`** - Tests the graph system with actual pipeline execution:

```bash
python examples/test_graph_integration.py
```

Verifies:
- Graph loading from TOML
- Pipeline execution
- Output rendering
- Comparison with preset-based pipelines

## Other Demos

- **`demo-lfo-effects.py`** - LFO modulation of effect intensities (Pygame display)
- **`demo_oscilloscope.py`** - Oscilloscope visualization
- **`demo_image_oscilloscope.py`** - Image-based oscilloscope

## Graph DSL Reference

See `docs/graph-dsl.md` for complete documentation on the graph-based DSL syntax.