custom operator for javascript Orca

Orca custom operator

/* this gist is javascript and goes in the library.js file   */
/* that's part of Orca install.  I had it between the        */
/* 'OperatorMidi' and 'OperatorCC' functions, though that order   */
/* is just for organization, not necessary.                  */

library['~'] = function OperatorMidiWithTranspose (orca, x, y, passive) {
  Operator.call(this, orca, x, y, '~', true)

  this.name = 'midiwithtranspose'
  this.info = 'Sends MIDI note with note transpose'
  this.ports.channel = { x: 1, y: 0 }
  this.ports.octave = { x: 2, y: 0, clamp: { min: 0, max: 8 } }
  this.ports.note = { x: 3, y: 0 }
  this.ports.velocity = { x: 4, y: 0, default: 'f', clamp: { min: 0, max: 16 } }
  this.ports.length = { x: 5, y: 0, default: '1', clamp: { min: 0, max: 32 } }
  this.ports.transpose = { x: 6, y: 0, default: '0', clamp: { min: 0, max: 35 } }

  this.operation = function (force = false) {
    if (!this.hasNeighbor('*') && force === false) { return }
    if (this.listen(this.ports.channel) === '.') { return }
    if (this.listen(this.ports.octave) === '.') { return }
    if (this.listen(this.ports.note) === '.') { return }
    if (!isNaN(this.listen(this.ports.note))) { return }

    const channel = this.listen(this.ports.channel, true)
    if (channel > 15) { return }
    const octave = this.listen(this.ports.octave, true)
    /* const basenote = this.listen(this.ports.note, true) */
    const basenote = notetoval[this.listen(this.ports.note)]
    const trval = this.listen(this.ports.transpose, true)
    const note = notearray[basenote + trval]
    const velocity = this.listen(this.ports.velocity, true)
    const length = this.listen(this.ports.length, true)

    client.io.midi.push(channel, octave, note, velocity, length)

    if (force === true) {
      client.io.midi.run()
    }

    this.draw = false
  }
}