Method constructor

docs/ui/src/js/initialDivergingScale.js:21–55

({swatches, startKeys, endKeys, middleKey, colorSpace, smooth, distributeLightness = 'polynomial', shift = 1, output})

class DivergingScale {
  constructor({swatches, startKeys, endKeys, middleKey, colorSpace, smooth, distributeLightness = 'polynomial', shift = 1, output}) {
    this._startKeys = startKeys;
    this._endKeys = endKeys;
    this._middleKey = middleKey;
    this._colorKeys = this._combineColorKeys();
    this._distributeLightness = distributeLightness;
    this._colorspace = colorSpace;
    this._shift = shift;
    this._smooth = smooth;
    this._output = output;
    this._swatches = swatches;
    this._scaleSwatches = swatches / 2;
    this._startScale = new SequentialScale({
      swatches: this._scaleSwatches,
      colorKeys: this._startKeys,
      colorSpace: this._colorspace,
      distributeLightness: this._distributeLightness,
      smooth: this._smooth,
      shift: this._shift,
      output: this._output
    });

    this._endScale = new SequentialScale({
      swatches: this._scaleSwatches,
      colorKeys: this._endKeys,
      colorSpace: this._colorspace,
      distributeLightness: this._distributeLightness,
      smooth: this._smooth,
      shift: this._shift,
      output: this._output
    });

    this._domains = this._getDomains();
    this._colors = this._createColorScale();
  }

  set startKeys(colors) {
    this._startKeys = colors;