Each letter of the alphabet is an operation, lowercase letters operate on bang, uppercase letters operate each frame. Orca is designed to control other applications, create procedural sequencers, and to experiment with livecoding. See the documentation and installation instructions here, or have a look at a tutorial video.

Operators

• A add: Outputs the sum of inputs.
• B bool: Bangs if input is not empty, or 0.
• C clock: Outputs a constant value based on the runtime frame.
• D delay: Bangs on a fraction of the runtime frame.
• E east: Moves eastward, or bangs.
• F if: Bangs if both inputs are equal.
• G generator: Writes distant operators with offset.
• H halt: Stops southward operators from operating.
• I increment: Increments southward operator.
• J jumper: Outputs the northward operator.
• K konkat: Outputs multiple variables.
• L loop: Loops a number of eastward operators.
• M modulo: Outputs the modulo of input.
• N north: Moves Northward, or bangs.
• O offset: Reads a distant operator with offset.
• P push: Writes an eastward operator with offset.
• Q query: Reads distant operators with offset.
• R random: Outputs a random value.
• S south: Moves southward, or bangs.
• T track: Reads an eastward operator with offset.
• U uturn: Reverses movement of inputs.
• V variable: Reads and write globally available variables.
• W west: Moves westward, or bangs.
• X teleport: Writes a distant operator with offset.
• Y jymper: Outputs the westward operator.
• Z zoom: Moves eastwardly, respawns west on collision.
• * bang: Bangs neighboring operators.
• # comment: Comments a line, or characters until the next hash.
• : midi: Sends a MIDI note.
• ^ cc: Sends a MIDI CC value.
• ; udp: Sends a UDP message.
• = osc: Sends a OSC message.

Controls

Terminal Controls

• enter bang selected operator.
• shift+enter toggle insert/write.
• space toggle play/pause.
• > increase BPM.
• < decrease BPM.
• shift+arrowKey Expand cursor.
• ctrl+arrowKey Leap cursor.
• alt+arrowKey Move selection.

Edit

• ctrl+c copy selection.
• ctrl+x cut selection.
• ctrl+v paste selection.
• ctrl+z undo.
• ctrl+shift+z redo.

Grid Controls

• ] increase grid size vertically.
• [ decrease grid size vertically.
• } increase grid size horizontally.
• { decrease grid size horizontally.
• ctrl/meta+] increase program size vertically.
• ctrl/meta+[ decrease program size vertically.
• ctrl/meta+} increase program size horizontally.
• ctrl/meta+{ decrease program size horizontally.

Window

• ctrl+= Zoom In.
• ctrl+- Zoom Out.
• ctrl+0 Zoom Reset.
• tab Toggle interface.
• backquote Toggle background.

Download the app here : https://hundredrabbits.itch.io/orca
Source code : https://github.com/hundredrabbits/Orca
Video tutorial : https://www.youtube.com/watch?v=RaI_TuISSJE

To test midi on Macosx : http://notahat.com/simplesynth
Activate the virtual Midi input on Macosx : https://help.ableton.com/hc/en-us/articles/209774225-Using-virtual-MIDI-buses

Pilot (another way to create music with orca from the same creators) :

Download the app here : https://hundredrabbits.itch.io/pilot
Source code : https://github.com/hundredrabbits/Pilot

A good explanation of the software in German : http://tropone.de/2019/03/13/orca-ein-sequenzer-der-kryptischer-nicht-aussehen-kann-und-ein-versuch-einer-anleitung/

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