set(xVal, yVal, zVal, time) {
    this.positionX(xVal, time);
    this.positionY(yVal, time);
    this.positionZ(zVal, time);
    return [
      this.panner.positionX.value,
      this.panner.positionY.value,
      this.panner.positionZ.value,
    ];
  }
Set the X,Y,Z position of the Panner
@method set
@for p5.Panner3D
@param  {Number} xVal
@param  {Number} yVal
@param  {Number} zVal
@param  {Number} time
@return {Array}      Updated x, y, z values as an array