Function getSelectedColorMap

docs/tests/v2/es6/js/sanddance.js:148241–148272

(currentData, showSelectedData, showActive, viewerOptions)

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
function getSelectedColorMap(currentData, showSelectedData, showActive, viewerOptions) {
  function getSelectionColorItem(datum) {
    let item;

    if (showSelectedData) {
      item = datum[_constants.FieldNames.Selected] ? {
        color: viewerOptions.colors.selectedCube
      } : {
        unSelected: true
      };
    }

    if (showActive && datum[_constants.FieldNames.Active]) {
      item = {
        color: viewerOptions.colors.activeCube
      };
    }

    return item;
  }

  const colorMap = {};
  currentData.forEach(datum => {
    const selectionColor = getSelectionColorItem(datum);

    if (selectionColor) {
      const ordinal = datum[VegaDeckGl.constants.GL_ORDINAL];
      colorMap[ordinal] = selectionColor;
    }
  });
  return colorMap;
}

function colorMapFromCubes(cubes) {
  const map = {};