kepler.gl.geoiq/dist/utils/color-utils.js

kepler.gl is a webgl based application to visualize large scale location data in the browser

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createLinearGradient = createLinearGradient;
exports.getColorGroupByName = getColorGroupByName;
exports.hexToRgb = hexToRgb;
exports.isHexColor = isHexColor;
exports.reverseColorRange = reverseColorRange;
exports.rgbToHex = rgbToHex;

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));

function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }

function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { (0, _defineProperty2["default"])(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }

// Copyright (c) 2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

/**
 * get r g b from hex code
 *
 * @param {string} hex
 * @returns {array} array of r g bs
 */
function hexToRgb(hex) {
  var result = isHexColor(hex);

  if (!result) {
    return [0, 0, 0];
  }

  var r = parseInt(result[1], 16);
  var g = parseInt(result[2], 16);
  var b = parseInt(result[3], 16);
  return [r, g, b];
}

function isHexColor(hex) {
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result;
}

function PadNum(c) {
  var hex = c.toString(16);
  return hex.length === 1 ? "0".concat(hex) : hex;
}
/**
 * get hex from r g b
 *
 * @param {array} rgb
 * @returns {string} hex string
 */


function rgbToHex(_ref) {
  var _ref2 = (0, _slicedToArray2["default"])(_ref, 3),
      r = _ref2[0],
      g = _ref2[1],
      b = _ref2[2];

  return "#".concat([r, g, b].map(function (n) {
    return PadNum(n);
  }).join('')).toUpperCase();
}
/**
 * Get color group name by parsing name, discard step in the name
 * e.g. Global Warming 6 -> Global Warming
 *
 * @param {Object} colorRange
 * @return {string}
 */


function getColorGroupByName(colorRange) {
  if (!colorRange || typeof colorRange.name !== 'string') {
    return null;
  }

  return colorRange.name.replace(/\b[^a-zA-Z]+$/, '');
}
/**
 * Get a reversed colorRange
 * @param {Boolean} reversed
 * @param {Object} colorRange
 */


function reverseColorRange(reversed, colorRange) {
  if (!colorRange) return null; // if (colorRange.reversed) return colorRange;

  return _objectSpread(_objectSpread({}, colorRange), {}, {
    reversed: reversed,
    colors: colorRange.colors.slice().reverse()
  });
}
/**
 * given a list of rgb arrays it will generate a linear gradient css rule
 * @param direction
 * @param colors
 * @return {string}
 */


function createLinearGradient(direction, colors) {
  var step = parseFloat(100.00 / colors.length).toFixed(2);
  var bands = colors.map(function (rgb, index) {
    return "rgba(".concat(rgb.join(','), ", 1) ").concat(step * index, "%, rgba(").concat(rgb.join(','), ", 1) ").concat(step * (index + 1), "%");
  });
  return "linear-gradient(to ".concat(direction, ", ").concat(bands.join(','), ")");
}
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