In-browser modular synthesis with Web Audio and Web MIDI.

The GUI should be inviting and feel natural.

Done:

• don't spam requestAnimationFrame
• stop the viewport from growing for no apparent reason
• support undo/redo of patch state changes (modules, connections, name)
• newly-added modules' names are based on the type of module
• adjust the viewport size to something reasonable during drag-continue and drag-end events

TODO:

• newly-added modules are positioned "meaningfully" (try to avoid overlaps, aim for the center of the viewport)
• modify the existing selection properly when using shift+drag
• scroll when dragging a module past the edge of the viewport
• infinite-scroll zoomable module canvas

Done:

• Some way to move selection from module to module using only the keyboard
• modules can be deleted with the keyboard
• Some way to go in-to/out-of a module's controls

TODO:

• A way to navigate structurally, based on existing connections
• A way to navigate independent of structure/tab-order (search?)

Done:

• modules have names
• K-rate audio params have a relevant input
• A-rate audio params have a connector, text-input, and slider
• signal-flow is represented as left-to-right

TODO:

• modules can be renamed
• modules look nice
• sequencer is cool
• modules have colors and can be re-colored

Done:

• a way to connect/disconnect modules with the mouse
• a way to connect/disconnect modules with the keyboard

TODO:

• undo/redo takes connections into account
• connector inputs have some kind of gain control
• connection ports/cables give some visual feedback of what's passing through them

Done:

• export/import files containing JSON-stringified IState.modules

TODO:

• export/import files including connection state
• catch and handle parse errors
• catch and handle a potentially-malformed state
• ability to define custom modules based on sub-patches

TODO:

• MidiDevice module
• MidiOscillator module
• MidiEnvelope module
• MidiSequencer module
• MidiSequencer module can output to external devices (latency compensation?)

Done:

• some way™️ to sync sequencers, envelopes, etc.

TODO:

• sync with external MIDI clocks
• Ableton Link support