kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
204 lines (164 loc) • 22 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.generateMapboxLayers = generateMapboxLayers;
exports.updateMapboxLayers = updateMapboxLayers;
exports.geoJsonFromData = geoJsonFromData;
exports.gpuFilterToMapboxFilter = gpuFilterToMapboxFilter;
exports.prefixGpuField = void 0;
var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _baseLayer = require("./base-layer");
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { (0, _defineProperty2["default"])(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
/** @typedef {import("geojson").FeatureCollection} FeatureCollection */
/** @typedef {import("geojson").Feature} Feature */
/**
* This function will convert layers to mapbox layers
* @param {Array<Object>} layers the layers to be converted
* @param {Array<Object>} layerData extra layer information
* @param {Array<Number>} layerOrder the order by which we should convert layers
* @param {Object} layersToRender {[id]: true | false} object whether each layer should be rendered
* @returns {Object} {[id]: layer}
*/
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 (idx) {
return layers[idx].overlayType === _baseLayer.OVERLAY_TYPE.mapboxgl && layersToRender[layers[idx].id];
}).reduce(function (accu, index) {
var layer = layers[index];
return _objectSpread(_objectSpread({}, accu), {}, (0, _defineProperty2["default"])({}, layer.id, {
id: layer.id,
data: layerData[index].data,
isVisible: layer.config.isVisible,
config: layerData[index].config,
hidden: layer.config.hidden,
sourceId: layerData[index].config.source
}));
}, {});
}
return {};
}
/**
* Update mapbox layers on the given map
* @param {Object} map
* @param {Object} newLayers Map of new mapbox layers to be displayed
* @param {Object} 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 ? arguments[2] : function (d) {};
var geojson = {
type: 'FeatureCollection',
/** @type {Feature[]} */
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 = function prefixGpuField(name) {
return "gpu:".concat(name);
};
exports.prefixGpuField = prefixGpuField;
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, name, i) {
return name ? [].concat((0, _toConsumableArray2["default"])(accu), [['>=', prefixGpuField(name), filterRange[i][0]], ['<=', prefixGpuField(name), filterRange[i][1]]]) : accu;
}, condition);
return expressions;
}
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Copyright (c) 2021 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 {OVERLAY_TYPE} from './base-layer';\n\n/** @typedef {import(\"geojson\").FeatureCollection} FeatureCollection */\n/** @typedef {import(\"geojson\").Feature} Feature */\n\n/**\n * This function will convert layers to mapbox layers\n * @param {Array<Object>} layers the layers to be converted\n * @param {Array<Object>} layerData extra layer information\n * @param {Array<Number>} layerOrder the order by which we should convert layers\n * @param {Object} layersToRender {[id]: true | false} object whether each layer should be rendered\n * @returns {Object} {[id]: layer}\n */\nexport function generateMapboxLayers(\n  layers = [],\n  layerData = [],\n  layerOrder = [],\n  layersToRender = {}\n) {\n  if (layerData.length > 0) {\n    return layerOrder\n      .slice()\n      .reverse()\n      .filter(\n        idx => layers[idx].overlayType === OVERLAY_TYPE.mapboxgl && layersToRender[layers[idx].id]\n      )\n      .reduce((accu, index) => {\n        const layer = layers[index];\n        return {\n          ...accu,\n          [layer.id]: {\n            id: layer.id,\n            data: layerData[index].data,\n            isVisible: layer.config.isVisible,\n            config: layerData[index].config,\n            hidden: layer.config.hidden,\n            sourceId: layerData[index].config.source\n          }\n        };\n      }, {});\n  }\n\n  return {};\n}\n\n/**\n * Update mapbox layers on the given map\n * @param {Object} map\n * @param {Object} newLayers Map of new mapbox layers to be displayed\n * @param {Object} oldLayers Map of the old layers to be compare with the current ones to detect deleted layers\n *                  {layerId: sourceId}\n */\nexport function updateMapboxLayers(map, newLayers = {}, oldLayers = null) {\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, newLayers) {\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(filteredIndex = [], getGeometry, getProperties = d => {}) {\n  const geojson = {\n    type: 'FeatureCollection',\n    /** @type {Feature[]} */\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).reduce(\n    (accu, name, i) =>\n      name\n        ? [\n            ...accu,\n            ['>=', prefixGpuField(name), filterRange[i][0]],\n            ['<=', prefixGpuField(name), filterRange[i][1]]\n          ]\n        : accu,\n    condition\n  );\n\n  return expressions;\n}\n"]}