kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
180 lines (175 loc) • 24.1 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.generateMapboxLayers = generateMapboxLayers;
exports.geoJsonFromData = geoJsonFromData;
exports.gpuFilterToMapboxFilter = gpuFilterToMapboxFilter;
exports.prefixGpuField = void 0;
exports.updateMapboxLayers = updateMapboxLayers;
var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _baseLayer = require("./base-layer");
var _utils = require("@kepler.gl/utils");
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; } // SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
/**
* This function will convert layers to mapbox layers
* @param layers the layers to be converted
* @param layerData extra layer information
* @param layerOrder the order by which we should convert layers
* @param layersToRender {[id]: true | false} object whether each layer should be rendered
* @returns
*/
function generateMapboxLayers() {
var layers = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var layerData = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
var layerOrder = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
var layersToRender = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
if (layerData.length > 0) {
return layerOrder.slice().reverse().filter(function (layerId) {
var layer = (0, _utils.findById)(layerId)(layers);
return (layer === null || layer === void 0 ? void 0 : layer.overlayType) === _baseLayer.OVERLAY_TYPE_CONST.mapboxgl && layersToRender[layerId];
}).reduce(function (acc, layerId) {
var layerIndex = layers.findIndex(function (l) {
return l.id === layerId;
});
if (layerIndex === -1) {
return acc;
}
var layer = layers[layerIndex];
if (!(layer.overlayType === _baseLayer.OVERLAY_TYPE_CONST.mapboxgl && layersToRender[layerId])) {
return acc;
}
return _objectSpread(_objectSpread({}, acc), {}, (0, _defineProperty2["default"])({}, layer.id, {
id: layer.id,
data: layerData[layerIndex].data,
isVisible: layer.config.isVisible,
config: layerData[layerIndex].config,
hidden: layer.config.hidden,
sourceId: layerData[layerIndex].config.source
}));
}, {});
}
return {};
}
/**
* Update mapbox layers on the given map
* @param map
* @param newLayers Map of new mapbox layers to be displayed
* @param oldLayers Map of the old layers to be compare with the current ones to detect deleted layers
* {layerId: sourceId}
*/
function updateMapboxLayers(map) {
var newLayers = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var oldLayers = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
// delete no longer existed old layers
if (oldLayers) {
checkAndRemoveOldLayers(map, oldLayers, newLayers);
}
// insert or update new layer
Object.values(newLayers).forEach(function (overlay) {
var layerId = overlay.id,
config = overlay.config,
data = overlay.data,
sourceId = overlay.sourceId,
isVisible = overlay.isVisible;
if (!data && !config) {
return;
}
var _ref = oldLayers && oldLayers[layerId] || {},
oldData = _ref.data,
oldConfig = _ref.config;
if (data && data !== oldData) {
updateSourceData(map, sourceId, data);
}
// compare with previous configs
if (oldConfig !== config) {
updateLayerConfig(map, layerId, config, isVisible);
}
});
}
function checkAndRemoveOldLayers(map, oldLayers, newLayers) {
Object.keys(oldLayers).forEach(function (layerId) {
if (!newLayers[layerId]) {
map.removeLayer(layerId);
}
});
}
function updateLayerConfig(map, layerId, config, isVisible) {
var mapboxLayer = map.getLayer(layerId);
if (mapboxLayer) {
// check if layer already is set
// remove it if exists
map.removeLayer(layerId);
}
map.addLayer(config);
map.setLayoutProperty(layerId, 'visibility', isVisible ? 'visible' : 'none');
}
function updateSourceData(map, sourceId, data) {
var source = map.getSource(sourceId);
if (!source) {
map.addSource(sourceId, {
type: 'geojson',
data: data
});
} else {
source.setData(data);
}
}
/**
*
* @param filteredIndex
* @param getGeometry {({index: number}) => any}
* @param getProperties {({index: number}) => any}
* @returns FeatureCollection
*/
function geoJsonFromData() {
var filteredIndex = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var getGeometry = arguments.length > 1 ? arguments[1] : undefined;
var getProperties = arguments.length > 2 ? arguments[2] : undefined;
var geojson = {
type: 'FeatureCollection',
features: []
};
for (var i = 0; i < filteredIndex.length; i++) {
var index = filteredIndex[i];
var rowIndex = {
index: index
};
var geometry = getGeometry(rowIndex);
if (geometry) {
geojson.features.push({
type: 'Feature',
properties: _objectSpread({
index: index
}, getProperties(rowIndex)),
geometry: geometry
});
}
}
return geojson;
}
var prefixGpuField = exports.prefixGpuField = function prefixGpuField(name) {
return "gpu:".concat(name);
};
function gpuFilterToMapboxFilter(gpuFilter) {
var filterRange = gpuFilter.filterRange,
filterValueUpdateTriggers = gpuFilter.filterValueUpdateTriggers;
var hasFilter = Object.values(filterValueUpdateTriggers).filter(function (d) {
return d;
});
if (!hasFilter.length) {
return null;
}
var condition = ['all'];
// [">=", key, value]
// ["<=", key, value]
var expressions = Object.values(filterValueUpdateTriggers).reduce(function (accu, gpu, i) {
return gpu !== null && gpu !== void 0 && gpu.name ? [].concat((0, _toConsumableArray2["default"])(accu), [['>=', prefixGpuField(gpu.name), filterRange[i][0]], ['<=', prefixGpuField(gpu.name), filterRange[i][1]]]) : accu;
}, condition);
return expressions;
}
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["_baseLayer","require","_utils","ownKeys","e","r","t","Object","keys","getOwnPropertySymbols","o","filter","getOwnPropertyDescriptor","enumerable","push","apply","_objectSpread","arguments","length","forEach","_defineProperty2","getOwnPropertyDescriptors","defineProperties","defineProperty","generateMapboxLayers","layers","undefined","layerData","layerOrder","layersToRender","slice","reverse","layerId","layer","findById","overlayType","OVERLAY_TYPE_CONST","mapboxgl","reduce","acc","layerIndex","findIndex","l","id","data","isVisible","config","hidden","sourceId","source","updateMapboxLayers","map","newLayers","oldLayers","checkAndRemoveOldLayers","values","overlay","_ref","oldData","oldConfig","updateSourceData","updateLayerConfig","removeLayer","mapboxLayer","getLayer","addLayer","setLayoutProperty","getSource","addSource","type","setData","geoJsonFromData","filteredIndex","getGeometry","getProperties","geojson","features","i","index","rowIndex","geometry","properties","prefixGpuField","exports","name","concat","gpuFilterToMapboxFilter","gpuFilter","filterRange","filterValueUpdateTriggers","hasFilter","d","condition","expressions","accu","gpu","_toConsumableArray2"],"sources":["../src/mapbox-utils.ts"],"sourcesContent":["// SPDX-License-Identifier: MIT\n// Copyright contributors to the kepler.gl project\n\nimport Layer, {OVERLAY_TYPE_CONST} from './base-layer';\nimport {Feature} from 'geojson';\n\nimport {findById} from '@kepler.gl/utils';\n\n/**\n * This function will convert layers to mapbox layers\n * @param layers the layers to be converted\n * @param layerData extra layer information\n * @param layerOrder the order by which we should convert layers\n * @param layersToRender {[id]: true | false} object whether each layer should be rendered\n * @returns\n */\nexport function generateMapboxLayers(\n  layers: Layer[] = [],\n  layerData: any[] = [],\n  layerOrder: string[] = [],\n  layersToRender: {[key: string]: boolean} = {}\n): {[key: string]: Layer} {\n  if (layerData.length > 0) {\n    return layerOrder\n      .slice()\n      .reverse()\n      .filter(layerId => {\n        const layer = findById(layerId)(layers);\n        return layer?.overlayType === OVERLAY_TYPE_CONST.mapboxgl && layersToRender[layerId];\n      })\n      .reduce((acc, layerId) => {\n        const layerIndex = layers.findIndex(l => l.id === layerId);\n        if (layerIndex === -1) {\n          return acc;\n        }\n\n        const layer = layers[layerIndex];\n\n        if (!(layer.overlayType === OVERLAY_TYPE_CONST.mapboxgl && layersToRender[layerId])) {\n          return acc;\n        }\n\n        return {\n          ...acc,\n          [layer.id]: {\n            id: layer.id,\n            data: layerData[layerIndex].data,\n            isVisible: layer.config.isVisible,\n            config: layerData[layerIndex].config,\n            hidden: layer.config.hidden,\n            sourceId: layerData[layerIndex].config.source\n          }\n        };\n      }, {});\n  }\n\n  return {};\n}\n\ntype newLayersType = {\n  [key: string]: Layer & Partial<{data: any; sourceId: any; isVisible: boolean}>;\n};\ntype oldLayersType = {[key: string]: Layer & {data?: any}};\n/**\n * Update mapbox layers on the given map\n * @param map\n * @param newLayers Map of new mapbox layers to be displayed\n * @param oldLayers Map of the old layers to be compare with the current ones to detect deleted layers\n *                  {layerId: sourceId}\n */\nexport function updateMapboxLayers(\n  map,\n  newLayers: newLayersType = {},\n  oldLayers: oldLayersType | null = null\n) {\n  // delete no longer existed old layers\n  if (oldLayers) {\n    checkAndRemoveOldLayers(map, oldLayers, newLayers);\n  }\n\n  // insert or update new layer\n  Object.values(newLayers).forEach(overlay => {\n    const {id: layerId, config, data, sourceId, isVisible} = overlay;\n    if (!data && !config) {\n      return;\n    }\n\n    const {data: oldData, config: oldConfig} = (oldLayers && oldLayers[layerId]) || {};\n\n    if (data && data !== oldData) {\n      updateSourceData(map, sourceId, data);\n    }\n\n    // compare with previous configs\n    if (oldConfig !== config) {\n      updateLayerConfig(map, layerId, config, isVisible);\n    }\n  });\n}\n\nfunction checkAndRemoveOldLayers(map, oldLayers: oldLayersType, newLayers: newLayersType) {\n  Object.keys(oldLayers).forEach(layerId => {\n    if (!newLayers[layerId]) {\n      map.removeLayer(layerId);\n    }\n  });\n}\n\nfunction updateLayerConfig(map, layerId, config, isVisible) {\n  const mapboxLayer = map.getLayer(layerId);\n\n  if (mapboxLayer) {\n    // check if layer already is set\n    // remove it if exists\n    map.removeLayer(layerId);\n  }\n\n  map.addLayer(config);\n  map.setLayoutProperty(layerId, 'visibility', isVisible ? 'visible' : 'none');\n}\n\nfunction updateSourceData(map, sourceId, data) {\n  const source = map.getSource(sourceId);\n\n  if (!source) {\n    map.addSource(sourceId, {\n      type: 'geojson',\n      data\n    });\n  } else {\n    source.setData(data);\n  }\n}\n\n/**\n *\n * @param filteredIndex\n * @param getGeometry {({index: number}) => any}\n * @param getProperties {({index: number}) => any}\n * @returns FeatureCollection\n */\nexport function geoJsonFromData(\n  filteredIndex: number[] = [],\n  getGeometry: (arg: {index: number}) => any,\n  getProperties: (arg: {index: number}) => object\n) {\n  const geojson: {type: string; features: Feature[]} = {\n    type: 'FeatureCollection',\n    features: []\n  };\n\n  for (let i = 0; i < filteredIndex.length; i++) {\n    const index = filteredIndex[i];\n    const rowIndex = {index};\n    const geometry = getGeometry(rowIndex);\n\n    if (geometry) {\n      geojson.features.push({\n        type: 'Feature',\n        properties: {\n          index,\n          ...getProperties(rowIndex)\n        },\n        geometry\n      });\n    }\n  }\n\n  return geojson;\n}\n\nexport const prefixGpuField = name => `gpu:${name}`;\n\nexport function gpuFilterToMapboxFilter(gpuFilter) {\n  const {filterRange, filterValueUpdateTriggers} = gpuFilter;\n\n  const hasFilter = Object.values(filterValueUpdateTriggers).filter(d => d);\n\n  if (!hasFilter.length) {\n    return null;\n  }\n\n  const condition = ['all'];\n\n  // [\">=\", key, value]\n  // [\"<=\", key, value]\n  const expressions = Object.values(filterValueUpdateTriggers as ({name: string} | null)[]).reduce(\n    (accu: any[], gpu, i) =>\n      gpu?.name\n        ? 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