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kepler.gl

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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'; Object.defineProperty(exports, "__esModule", { value: true }); exports.heatmapVisConfigs = undefined; var _extends2 = require('babel-runtime/helpers/extends'); var _extends3 = _interopRequireDefault(_extends2); var _objectWithoutProperties2 = require('babel-runtime/helpers/objectWithoutProperties'); var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2); var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); var _createClass2 = require('babel-runtime/helpers/createClass'); var _createClass3 = _interopRequireDefault(_createClass2); var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); var _get2 = require('babel-runtime/helpers/get'); var _get3 = _interopRequireDefault(_get2); var _inherits2 = require('babel-runtime/helpers/inherits'); var _inherits3 = _interopRequireDefault(_inherits2); var _toConsumableArray2 = require('babel-runtime/helpers/toConsumableArray'); var _toConsumableArray3 = _interopRequireDefault(_toConsumableArray2); var _reselect = require('reselect'); var _defaultSettings = require('../../constants/default-settings'); var _colorUtils = require('../../utils/color-utils'); var _mapboxUtils = require('../mapbox-utils'); var _mapboxglLayer = require('../mapboxgl-layer'); var _mapboxglLayer2 = _interopRequireDefault(_mapboxglLayer); var _heatmapLayerIcon = require('./heatmap-layer-icon'); var _heatmapLayerIcon2 = _interopRequireDefault(_heatmapLayerIcon); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } // Copyright (c) 2018 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. var MAX_ZOOM_LEVEL = 18; 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 scale = scaleFunction().domain([0, 1]).range(colorRange.colors); return scale.range().reduce(function (bands, level) { var invert = scale.invertExtent(level); return [].concat((0, _toConsumableArray3.default)(bands), [invert[0], // first value in the range 'rgb(' + (0, _colorUtils.hexToRgb)(level).join(',') + ')' // color ]); }, []); }; var shouldRebuild = function shouldRebuild(sameData, sameConfig) { return !(sameData && sameConfig); }; var HeatmapLayer = function (_MapboxGLLayer) { (0, _inherits3.default)(HeatmapLayer, _MapboxGLLayer); function HeatmapLayer(props) { (0, _classCallCheck3.default)(this, HeatmapLayer); var _this = (0, _possibleConstructorReturn3.default)(this, (HeatmapLayer.__proto__ || Object.getPrototypeOf(HeatmapLayer)).call(this, props)); _this.isSameData = function (_ref, config) { var allData = _ref.allData, filteredIndex = _ref.filteredIndex, oldLayerData = _ref.oldLayerData, _ref$opt = _ref.opt, opt = _ref$opt === undefined ? {} : _ref$opt; return Boolean(oldLayerData && oldLayerData.columns === config.columns && opt.sameData); }; _this.isSameConfig = function (_ref2) { var oldLayerData = _ref2.oldLayerData, config = _ref2.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; }; _this.datasetSelector = function (config) { return config.dataId; }; _this.isVisibleSelector = function (config) { return config.isVisible; }; _this.visConfigSelector = function (config) { return config.visConfig; }; _this.weightFieldSelector = function (config) { return config.weightField ? config.weightField.name : null; }; _this.weightDomainSelector = function (config) { return config.weightDomain; }; _this.computeHeatmapConfiguration = (0, _reselect.createSelector)(_this.datasetSelector, _this.isVisibleSelector, _this.visConfigSelector, _this.weightFieldSelector, _this.weightDomainSelector, function (datasetId, isVisible, visConfig, weightField, weightDomain) { var layer = { type: 'heatmap', id: _this.id, source: datasetId, layout: { visibility: isVisible ? 'visible' : 'none' }, 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, _toConsumableArray3.default)(heatmapDensity(visConfig.colorRange))), 'heatmap-radius': ['interpolate', ['linear'], ['zoom'], 0, 2, MAX_ZOOM_LEVEL, visConfig.radius // radius ], 'heatmap-opacity': visConfig.opacity } }; return layer; }); _this.registerVisConfig(heatmapVisConfigs); return _this; } (0, _createClass3.default)(HeatmapLayer, [{ 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$weightField = (0, _extends3.default)({}, (0, _get3.default)(HeatmapLayer.prototype.__proto__ || Object.getPrototypeOf(HeatmapLayer.prototype), 'getDefaultLayerConfig', this).call(this, props), { weightField: null, weightDomain: [0, 1], weightScale: 'linear' }), colorField = _get$call$weightField.colorField, colorDomain = _get$call$weightField.colorDomain, colorScale = _get$call$weightField.colorScale, layerConfig = (0, _objectWithoutProperties3.default)(_get$call$weightField, ['colorField', 'colorDomain', 'colorScale']); /* eslint-enable no-unused-vars */ return layerConfig; } }, { 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 data = !shouldRebuild(isSameData, isSameConfig) ? null : (0, _mapboxUtils.geojsonFromPoints)(allData, filteredIndex, this.config.columns, weightField ? [weightField] : []); var newConfig = this.computeHeatmapConfiguration(this.config); newConfig.id = this.id; return { columns: this.config.columns, config: newConfig, data: data, weightField: weightField }; } }, { 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 _heatmapLayerIcon2.default; } }]); return HeatmapLayer; }(_mapboxglLayer2.default); exports.default = HeatmapLayer; //# 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Copyright (c) 2018 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 {CHANNEL_SCALES, SCALE_FUNC, ALL_FIELD_TYPES} 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 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\n  const scaleFunction = SCALE_FUNC.quantize;\n\n  const scale = scaleFunction()\n    .domain([0, 1])\n    .range(colorRange.colors);\n\n  return 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};\n\nconst shouldRebuild = (sameData, sameConfig) => !(sameData && sameConfig);\n\nclass HeatmapLayer extends MapboxGLLayer {\n  constructor(props) {\n    super(props);\n    this.registerVisConfig(heatmapVisConfigs);\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      label: 'color',\n      measure: 'Density'\n    } : {\n      label: 'weight',\n      measure: this.config.weightField ? this.config.weightField.name : 'Density'\n    }\n  }\n\n  getDefaultLayerConfig(props = {}) {\n\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(oldLayerData && oldLayerData.columns === config.columns &&\n      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 {\n      columns,\n      weightField\n    } = 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  isVisibleSelector = config => config.isVisible;\n  visConfigSelector = config => config.visConfig;\n  weightFieldSelector = config => config.weightField ? config.weightField.name : null;\n  weightDomainSelector = config => config.weightDomain;\n\n  computeHeatmapConfiguration = createSelector(\n    this.datasetSelector,\n    this.isVisibleSelector,\n    this.visConfigSelector,\n    this.weightFieldSelector,\n    this.weightDomainSelector,\n\n    (datasetId, isVisible, visConfig, weightField, weightDomain) => {\n\n      const layer = {\n        type: 'heatmap',\n        id: this.id,\n        source: datasetId,\n        layout: {\n          visibility: isVisible ? 'visible' : 'none'\n        },\n        maxzoom: MAX_ZOOM_LEVEL,\n        paint: {\n          'heatmap-weight': weightField ? [\n            'interpolate',\n            ['linear'],\n            ['get', weightField],\n            weightDomain[0], 0,\n            weightDomain[1], 1\n          ] : 1,\n          'heatmap-intensity': [\n            'interpolate',\n            ['linear'],\n            ['zoom'],\n            0, 1,\n            MAX_ZOOM_LEVEL, 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, 2,\n            MAX_ZOOM_LEVEL, visConfig.radius // radius\n          ],\n          'heatmap-opacity': visConfig.opacity\n        }\n      };\n\n      return layer;\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 data = !shouldRebuild(isSameData, isSameConfig) ?\n      null :\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    };\n  }\n}\n\nexport default HeatmapLayer;\n"]}