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kepler.gl.geoiq

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

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"use strict"; var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault"); Object.defineProperty(exports, "__esModule", { value: true }); exports.pointPosAccessor = exports.pointColResolver = exports.heatmapVisConfigs = exports["default"] = void 0; var _objectWithoutProperties2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutProperties")); var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck")); var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass")); var _assertThisInitialized2 = _interopRequireDefault(require("@babel/runtime/helpers/assertThisInitialized")); var _get2 = _interopRequireDefault(require("@babel/runtime/helpers/get")); var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits")); var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn")); var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf")); var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty")); var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray")); var _reselect = require("reselect"); var _lodash = _interopRequireDefault(require("lodash.memoize")); var _defaultSettings = require("../../constants/default-settings"); var _colorUtils = require("../../utils/color-utils"); var _mapboxUtils = require("../mapbox-utils"); var _mapboxglLayer = _interopRequireDefault(require("../mapboxgl-layer")); var _heatmapLayerIcon = _interopRequireDefault(require("./heatmap-layer-icon")); var _excluded = ["colorField", "colorDomain", "colorScale"]; 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; } function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = (0, _getPrototypeOf2["default"])(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = (0, _getPrototypeOf2["default"])(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return (0, _possibleConstructorReturn2["default"])(this, result); }; } function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } } var MAX_ZOOM_LEVEL = 18; var pointPosAccessor = exports.pointPosAccessor = function pointPosAccessor(_ref) { var lat = _ref.lat, lng = _ref.lng; return function (d) { return [// lng d.data[lng.fieldIdx], // lat d.data[lat.fieldIdx]]; }; }; var pointColResolver = exports.pointColResolver = function pointColResolver(_ref2) { var lat = _ref2.lat, lng = _ref2.lng; return "".concat(lat.fieldIdx, "-").concat(lng.fieldIdx); }; var heatmapVisConfigs = exports.heatmapVisConfigs = { opacity: 'opacity', colorRange: 'colorRange', radius: 'heatmapRadius' }; /** * * @param {Object} colorRange * @return {Array} [ * 0, "rgba(33,102,172,0)", * 0.2, "rgb(103,169,207)", * 0.4, "rgb(209,229,240)", * 0.6, "rgb(253,219,199)", * 0.8, "rgb(239,138,98)", * 1, "rgb(178,24,43)" * ] */ var heatmapDensity = function heatmapDensity(colorRange) { var scaleFunction = _defaultSettings.SCALE_FUNC.quantize; var colors = ['#000000'].concat((0, _toConsumableArray2["default"])(colorRange.colors)); var scale = scaleFunction().domain([0, 1]).range(colors); var colorDensity = scale.range().reduce(function (bands, level) { var invert = scale.invertExtent(level); return [].concat((0, _toConsumableArray2["default"])(bands), [invert[0], // first value in the range "rgb(".concat((0, _colorUtils.hexToRgb)(level).join(','), ")") // color ]); }, []); colorDensity[1] = 'rgba(0,0,0,0)'; return colorDensity; }; var shouldRebuild = function shouldRebuild(sameData, sameConfig) { return !(sameData && sameConfig); }; var HeatmapLayer = /*#__PURE__*/function (_MapboxGLLayer) { (0, _inherits2["default"])(HeatmapLayer, _MapboxGLLayer); var _super = _createSuper(HeatmapLayer); function HeatmapLayer(props) { var _this; (0, _classCallCheck2["default"])(this, HeatmapLayer); _this = _super.call(this, props); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "isSameData", function (_ref3, config) { var allData = _ref3.allData, filteredIndex = _ref3.filteredIndex, oldLayerData = _ref3.oldLayerData, _ref3$opt = _ref3.opt, opt = _ref3$opt === void 0 ? {} : _ref3$opt; return Boolean(oldLayerData && oldLayerData.columns === config.columns && opt.sameData); }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "isSameConfig", function (_ref4) { var oldLayerData = _ref4.oldLayerData, config = _ref4.config; // columns must use the same filedIdx // this is a fast way to compare columns object var columns = config.columns, weightField = config.weightField; if (!oldLayerData) { return false; } var sameColumns = columns === oldLayerData.columns; var sameWeightField = weightField === oldLayerData.weightField; return sameColumns && sameWeightField; }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "datasetSelector", function (config) { return config.dataId; }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "columnsSelector", function (config) { return pointColResolver(config.columns); }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "visConfigSelector", function (config) { return config.visConfig; }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "weightFieldSelector", function (config) { return config.weightField ? config.weightField.name : null; }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "weightDomainSelector", function (config) { return config.weightDomain; }); (0, _defineProperty2["default"])((0, _assertThisInitialized2["default"])(_this), "computeHeatmapConfiguration", (0, _reselect.createSelector)(_this.datasetSelector, _this.columnsSelector, _this.visConfigSelector, _this.weightFieldSelector, _this.weightDomainSelector, function (datasetId, columns, visConfig, weightField, weightDomain) { return { type: 'heatmap', id: _this.id, source: "".concat(datasetId, "-").concat(columns), layout: { visibility: 'visible' }, maxzoom: MAX_ZOOM_LEVEL, paint: { 'heatmap-weight': weightField ? ['interpolate', ['linear'], ['get', weightField], weightDomain[0], 0, weightDomain[1], 1] : 1, 'heatmap-intensity': ['interpolate', ['linear'], ['zoom'], 0, 1, MAX_ZOOM_LEVEL, 3], 'heatmap-color': ['interpolate', ['linear'], ['heatmap-density']].concat((0, _toConsumableArray2["default"])(heatmapDensity(visConfig.colorRange))), 'heatmap-radius': ['interpolate', ['linear'], ['zoom'], 0, 2, MAX_ZOOM_LEVEL, visConfig.radius // radius ], 'heatmap-opacity': visConfig.opacity } }; })); _this.registerVisConfig(heatmapVisConfigs); _this.getPosition = (0, _lodash["default"])(pointPosAccessor, pointColResolver); return _this; } (0, _createClass2["default"])(HeatmapLayer, [{ key: "type", get: function get() { return 'heatmap'; } }, { key: "visualChannels", get: function get() { return { weight: { property: 'weight', field: 'weightField', scale: 'weightScale', domain: 'weightDomain', key: 'weight', // supportedFieldTypes can be determined by channelScaleType // or specified here defaultMeasure: 'density', supportedFieldTypes: [_defaultSettings.ALL_FIELD_TYPES.real, _defaultSettings.ALL_FIELD_TYPES.integer], channelScaleType: _defaultSettings.CHANNEL_SCALES.size } }; } }, { key: "layerIcon", get: function get() { return _heatmapLayerIcon["default"]; } }, { key: "getVisualChannelDescription", value: function getVisualChannelDescription(channel) { return channel === 'color' ? { label: 'color', measure: 'Density' } : { label: 'weight', measure: this.config.weightField ? this.config.weightField.name : 'Density' }; } }, { key: "getDefaultLayerConfig", value: function getDefaultLayerConfig() { var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; // mapbox heatmap layer color is always based on density // no need to set colorField, colorDomain and colorScale /* eslint-disable no-unused-vars */ var _get$call$weightField = _objectSpread(_objectSpread({}, (0, _get2["default"])((0, _getPrototypeOf2["default"])(HeatmapLayer.prototype), "getDefaultLayerConfig", this).call(this, props)), {}, { weightField: null, weightDomain: [0, 1], weightScale: 'linear' }), colorField = _get$call$weightField.colorField, colorDomain = _get$call$weightField.colorDomain, colorScale = _get$call$weightField.colorScale, layerConfig = (0, _objectWithoutProperties2["default"])(_get$call$weightField, _excluded); /* eslint-enable no-unused-vars */ return layerConfig; } }, { key: "getPositionAccessor", value: function getPositionAccessor() { return this.getPosition(this.config.columns); } }, { key: "updateLayerMeta", value: function updateLayerMeta(allData) { var getPosition = this.getPositionAccessor(); var bounds = this.getPointsBounds(allData, function (d) { return getPosition({ data: d }); }); this.updateMeta({ bounds: bounds }); } }, { key: "formatLayerData", value: function formatLayerData(_, allData, filteredIndex, oldLayerData) { var opt = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {}; var options = { allData: allData, filteredIndex: filteredIndex, oldLayerData: oldLayerData, opt: opt, config: this.config }; var weightField = this.config.weightField; var isSameData = this.isSameData(options, this.config); var isSameConfig = this.isSameConfig(options); var getPosition = this.getPositionAccessor(); if (!oldLayerData || oldLayerData.getPosition !== getPosition) { this.updateLayerMeta(allData, getPosition); } var data = !shouldRebuild(isSameData, isSameConfig) ? oldLayerData.data : (0, _mapboxUtils.geojsonFromPoints)(allData, filteredIndex, this.config.columns, weightField ? 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Copyright (c) 2023 Uber Technologies, Inc.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nimport {createSelector} from 'reselect';\nimport memoize from 'lodash.memoize';\nimport {\n  CHANNEL_SCALES,\n  SCALE_FUNC,\n  ALL_FIELD_TYPES\n} from 'constants/default-settings';\nimport {hexToRgb} from 'utils/color-utils';\nimport {geojsonFromPoints} from '../mapbox-utils';\nimport MapboxGLLayer from '../mapboxgl-layer';\nimport HeatmapLayerIcon from './heatmap-layer-icon';\n\nconst MAX_ZOOM_LEVEL = 18;\n\nexport const pointPosAccessor = ({lat, lng}) => d => [\n  // lng\n  d.data[lng.fieldIdx],\n  // lat\n  d.data[lat.fieldIdx]\n];\n\nexport const pointColResolver = ({lat, lng}) =>\n  `${lat.fieldIdx}-${lng.fieldIdx}`;\n\nexport const heatmapVisConfigs = {\n  opacity: 'opacity',\n  colorRange: 'colorRange',\n  radius: 'heatmapRadius'\n};\n\n/**\n *\n * @param {Object} colorRange\n * @return {Array} [\n *  0, \"rgba(33,102,172,0)\",\n *  0.2, \"rgb(103,169,207)\",\n *  0.4, \"rgb(209,229,240)\",\n *  0.6, \"rgb(253,219,199)\",\n *  0.8, \"rgb(239,138,98)\",\n *  1, \"rgb(178,24,43)\"\n * ]\n */\nconst heatmapDensity = colorRange => {\n  const scaleFunction = SCALE_FUNC.quantize;\n\n  const colors = ['#000000', ...colorRange.colors];\n\n  const scale = scaleFunction()\n    .domain([0, 1])\n    .range(colors);\n\n  const colorDensity = scale.range().reduce((bands, level) => {\n    const invert = scale.invertExtent(level);\n    return [\n      ...bands,\n      invert[0], // first value in the range\n      `rgb(${hexToRgb(level).join(',')})` // color\n    ];\n  }, []);\n  colorDensity[1] = 'rgba(0,0,0,0)';\n  return colorDensity;\n};\n\nconst shouldRebuild = (sameData, sameConfig) => !(sameData && sameConfig);\n\nclass HeatmapLayer extends MapboxGLLayer {\n  constructor(props) {\n    super(props);\n    this.registerVisConfig(heatmapVisConfigs);\n    this.getPosition = memoize(pointPosAccessor, pointColResolver);\n  }\n\n  get type() {\n    return 'heatmap';\n  }\n\n  get visualChannels() {\n    return {\n      weight: {\n        property: 'weight',\n        field: 'weightField',\n        scale: 'weightScale',\n        domain: 'weightDomain',\n        key: 'weight',\n        // supportedFieldTypes can be determined by channelScaleType\n        // or specified here\n        defaultMeasure: 'density',\n        supportedFieldTypes: [ALL_FIELD_TYPES.real, ALL_FIELD_TYPES.integer],\n        channelScaleType: CHANNEL_SCALES.size\n      }\n    };\n  }\n\n  get layerIcon() {\n    return HeatmapLayerIcon;\n  }\n\n  getVisualChannelDescription(channel) {\n    return channel === 'color'\n      ? {\n          label: 'color',\n          measure: 'Density'\n        }\n      : {\n          label: 'weight',\n          measure: this.config.weightField\n            ? this.config.weightField.name\n            : 'Density'\n        };\n  }\n\n  getDefaultLayerConfig(props = {}) {\n    // mapbox heatmap layer color is always based on density\n    // no need to set colorField, colorDomain and colorScale\n    /* eslint-disable no-unused-vars */\n    const {colorField, colorDomain, colorScale, ...layerConfig} = {\n      ...super.getDefaultLayerConfig(props),\n\n      weightField: null,\n      weightDomain: [0, 1],\n      weightScale: 'linear'\n    };\n    /* eslint-enable no-unused-vars */\n\n    return layerConfig;\n  }\n\n  isSameData = ({allData, filteredIndex, oldLayerData, opt = {}}, config) => {\n    return Boolean(\n      oldLayerData && oldLayerData.columns === config.columns && opt.sameData\n    );\n  };\n\n  isSameConfig = ({oldLayerData, config}) => {\n    // columns must use the same filedIdx\n    // this is a fast way to compare columns object\n    const {columns, weightField} = config;\n\n    if (!oldLayerData) {\n      return false;\n    }\n\n    const sameColumns = columns === oldLayerData.columns;\n    const sameWeightField = weightField === oldLayerData.weightField;\n    return sameColumns && sameWeightField;\n  };\n\n  datasetSelector = config => config.dataId;\n  columnsSelector = config => pointColResolver(config.columns);\n  visConfigSelector = config => config.visConfig;\n  weightFieldSelector = config =>\n    config.weightField ? config.weightField.name : null;\n  weightDomainSelector = config => config.weightDomain;\n\n  getPositionAccessor() {\n    return this.getPosition(this.config.columns);\n  }\n\n  updateLayerMeta(allData) {\n    const getPosition = this.getPositionAccessor();\n    const bounds = this.getPointsBounds(allData, d => getPosition({data: d}));\n    this.updateMeta({bounds});\n  }\n\n  computeHeatmapConfiguration = createSelector(\n    this.datasetSelector,\n    this.columnsSelector,\n    this.visConfigSelector,\n    this.weightFieldSelector,\n    this.weightDomainSelector,\n\n    (datasetId, columns, visConfig, weightField, weightDomain) => {\n      return {\n        type: 'heatmap',\n        id: this.id,\n        source: `${datasetId}-${columns}`,\n        layout: {\n          visibility: 'visible'\n        },\n        maxzoom: MAX_ZOOM_LEVEL,\n        paint: {\n          'heatmap-weight': weightField\n            ? [\n                'interpolate',\n                ['linear'],\n                ['get', weightField],\n                weightDomain[0],\n                0,\n                weightDomain[1],\n                1\n              ]\n            : 1,\n          'heatmap-intensity': [\n            'interpolate',\n            ['linear'],\n            ['zoom'],\n            0,\n            1,\n            MAX_ZOOM_LEVEL,\n            3\n          ],\n          'heatmap-color': [\n            'interpolate',\n            ['linear'],\n            ['heatmap-density'],\n            ...heatmapDensity(visConfig.colorRange)\n          ],\n          'heatmap-radius': [\n            'interpolate',\n            ['linear'],\n            ['zoom'],\n            0,\n            2,\n            MAX_ZOOM_LEVEL,\n            visConfig.radius // radius\n          ],\n          'heatmap-opacity': visConfig.opacity\n        }\n      };\n    }\n  );\n\n  formatLayerData(_, allData, filteredIndex, oldLayerData, opt = {}) {\n    const options = {\n      allData,\n      filteredIndex,\n      oldLayerData,\n      opt,\n      config: this.config\n    };\n\n    const {weightField} = this.config;\n    const isSameData = this.isSameData(options, this.config);\n    const isSameConfig = this.isSameConfig(options);\n\n    const getPosition = this.getPositionAccessor();\n\n    if (!oldLayerData || oldLayerData.getPosition !== getPosition) {\n      this.updateLayerMeta(allData, getPosition);\n    }\n\n    const data = !shouldRebuild(isSameData, isSameConfig)\n      ? oldLayerData.data\n      : geojsonFromPoints(\n          allData,\n          filteredIndex,\n          this.config.columns,\n          weightField ? [weightField] : []\n        );\n\n    const newConfig = this.computeHeatmapConfiguration(this.config);\n    newConfig.id = this.id;\n\n    return {\n      columns: this.config.columns,\n      config: newConfig,\n      data,\n      weightField,\n      getPosition\n    };\n  }\n}\n\nexport default HeatmapLayer;\n"]}