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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

[1.1.0] - 2026-03-10

Added

  • Multi-Layer Composition System: Introduced a new architecture allowing multiple visualizer layers to be stacked and managed independently.
  • Fractal Visualizer Plugin: Added a new WebGL fragment shader visualizer (visualizers/fractal.js) capable of rendering high-performance Mandelbrot and Julia set fractals.
  • Per-Layer Spin Speed: Added independent Spin Speed controls to layer transforms, allowing nested layers to rotate at different speeds and directions simultaneously.
  • Organic Julia Morphing: The Auto-Rotate feature now drives organic mathematical morphing for Julia set fractals alongside 2D spinning.
  • Layer Manager UI: Added a new UI section to add, remove, and select active layers, seamlessly swapping controls based on the selected layer type.
  • Screensaver Mode: UI controls panel fades out when idle for 4 seconds to prevent screen burn-in.
  • Info/About Modal: Added an informational modal, accessible via a ? button, containing a "How To Use" guide and project details.
  • Angle Step Parameter: Added an "Angle Step" parameter to allow dynamic polygonal/geometric spiral shapes (e.g., squares, Golden Ratio/Fibonacci spirals) beyond the hard-coded hexagon.
  • Audio-Reactive Line Width: Line width can now dynamically react to audio amplitude.
  • AI Agent Skills: Imported and created a suite of specialized agent skills (visualizer-architect, ui-manager, ui-consistency, a11y-auditor, release-manager, documentation-sentinel) and updated workflows (create-new-visualizer.md) to standardize future AI-assisted development.
  • Created .github directory containing CONTRIBUTING.md and ISSUE_TEMPLATE configurations.
  • Created .gemini directory with PROJECT_CONTEXT.md and CODING_STANDARDS.md to assist AI development.

Changed

  • Plugin Architecture: Modularized the monolithic WebGL engine. Extracted the original spiral logic into a standalone plugin (visualizers/spiral.js), acting as the foundation for the new composition compositor.
  • State Management: Refactored state.js to support an array of layer configurations (appState.layers), moving away from a single global state object.
  • Global Audio Routing: Updated audio.js to broadcast audio-reactive effects to all active layers simultaneously.
  • WebGL Performance Optimization: Refactored the core rendering engine (drawing.js and webgl-setup.js) to cache geometry and perform transformations (rotation, scaling, mirroring) entirely on the GPU, greatly improving performance (smooth 60 fps) for auto-rotation and audio reactivity.
  • Updated repository references in README.md to the new BrainAV organization.
  • Standardized documentation filenames to uppercase (CHANGELOG.md, ROADMAP.md, DEV_GUIDE.md).
  • Updated DEV_GUIDE.md to reflect the new folder structure and contribution workflow.

Fixed

  • Fixed an autoRotate bug where a single global rotation variable was overwriting independent layer orientations.
  • Fixed a script loading race condition in index.html where script.js was referencing state.js functions before initialization.
  • Fixed WebGL state leakage (INVALID_OPERATION errors) preventing multiple shaders from co-existing by explicitly unbinding vertex attribute arrays safely between draws.

[1.0.0] - 2025-12-08

Added

  • Added a "Start/Stop Audio" button for explicit user control over microphone access.
  • Added user documentation and new visual styles to the ROADMAP.md.
  • ROADMAP.md for planning future development.
  • DEV_GUIDE.md for contributor guidelines.
  • CHANGELOG.md to track project changes.
  • Major Upgrade: Replaced 2D Canvas renderer with a high-performance WebGL engine from the /3/ prototype.

Changed

  • Updated DEV_GUIDE.md with current instructions for adding presets and maintaining README.md.
  • Updated README.md to reflect the current number of presets (16) and features.
  • Updated project title in index.html and README.md to "Audio Visualizer".
  • Refactored styles.css to use CSS variables for easier theming and maintenance.
  • Integrated advanced mobile touch controls (pinch-to-zoom and drag-to-rotate) from prototype.
  • Major Refactor: Modularized the monolithic script.js into smaller, focused files (webgl-setup.js, drawing.js, audio.js, ui.js, state.js) for improved maintainability.

Fixed

  • Fixed an issue where tooltips would render partially off-screen or be clipped by the controls panel.
  • Fixed a bug where curved lines would disappear or render incorrectly.
  • Simplified the layerRatio UI control by removing the redundant and less responsive number input.