kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
181 lines (149 loc) • 22.1 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.findDefaultLayer = findDefaultLayer;
exports.calculateLayerData = calculateLayerData;
exports.getLayerHoverProp = getLayerHoverProp;
exports.renderDeckGlLayer = renderDeckGlLayer;
exports.isLayerRenderable = isLayerRenderable;
exports.isLayerVisible = isLayerVisible;
exports.prepareLayersForDeck = prepareLayersForDeck;
exports.prepareLayersToRender = prepareLayersToRender;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _baseLayer = require("../layers/base-layer");
var _defaultSettings = require("../constants/default-settings");
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; }
/**
* Find default layers from fields
* @type {typeof import('./layer-utils').findDefaultLayer}
*/
function findDefaultLayer(dataset, layerClasses) {
if (!dataset) {
return [];
}
var layerProps = Object.keys(layerClasses).reduce(function (previous, lc) {
var result = typeof layerClasses[lc].findDefaultLayerProps === 'function' ? layerClasses[lc].findDefaultLayerProps(dataset, previous) : {
props: []
};
var props = Array.isArray(result) ? result : result.props || [];
var foundLayers = result.foundLayers || previous;
return foundLayers.concat(props.map(function (p) {
return _objectSpread(_objectSpread({}, p), {}, {
type: lc,
dataId: dataset.id
});
}));
}, []); // go through all layerProps to create layer
return layerProps.map(function (props) {
var layer = new layerClasses[props.type](props);
return typeof layer.setInitialLayerConfig === 'function' && dataset.dataContainer ? layer.setInitialLayerConfig(dataset) : layer;
});
}
/**
* calculate layer data based on layer type, col Config,
* return updated layer if colorDomain, dataMap has changed
* @type {typeof import('./layer-utils').calculateLayerData}
*/
function calculateLayerData(layer, state, oldLayerData) {
var type = layer.type;
if (!type || !layer.hasAllColumns() || !layer.config.dataId) {
return {
layer: layer,
layerData: {}
};
}
var layerData = layer.formatLayerData(state.datasets, oldLayerData);
return {
layerData: layerData,
layer: layer
};
}
/**
* Calculate props passed to LayerHoverInfo
* @type {typeof import('./layer-utils').getLayerHoverProp}
*/
function getLayerHoverProp(_ref) {
var interactionConfig = _ref.interactionConfig,
hoverInfo = _ref.hoverInfo,
layers = _ref.layers,
layersToRender = _ref.layersToRender,
datasets = _ref.datasets;
if (interactionConfig.tooltip.enabled && hoverInfo && hoverInfo.picked) {
// if anything hovered
var object = hoverInfo.object,
overlay = hoverInfo.layer; // deckgl layer to kepler-gl layer
var layer = layers[overlay.props.idx];
if (object && layer && layer.getHoverData && layersToRender[layer.id]) {
// if layer is visible and have hovered data
var dataId = layer.config.dataId;
if (!dataId) {
return null;
}
var _datasets$dataId = datasets[dataId],
dataContainer = _datasets$dataId.dataContainer,
fields = _datasets$dataId.fields;
var data = layer.getHoverData(object, dataContainer, fields);
var fieldsToShow = interactionConfig.tooltip.config.fieldsToShow[dataId];
return {
data: data,
fields: fields,
fieldsToShow: fieldsToShow,
layer: layer
};
}
}
return null;
}
function renderDeckGlLayer(props, layerCallbacks, idx) {
var datasets = props.datasets,
layers = props.layers,
layerData = props.layerData,
hoverInfo = props.hoverInfo,
clicked = props.clicked,
mapState = props.mapState,
interactionConfig = props.interactionConfig,
animationConfig = props.animationConfig,
mapLayers = props.mapLayers;
var layer = layers[idx];
var data = layerData[idx];
var _ref2 = datasets[layer.config.dataId] || {},
gpuFilter = _ref2.gpuFilter;
var objectHovered = clicked || hoverInfo;
var visible = !mapLayers || mapLayers && mapLayers[layer.id]; // Layer is Layer class
return layer.renderLayer({
data: data,
gpuFilter: gpuFilter,
idx: idx,
interactionConfig: interactionConfig,
layerCallbacks: layerCallbacks,
mapState: mapState,
animationConfig: animationConfig,
objectHovered: objectHovered,
visible: visible
});
}
function isLayerRenderable(layer, layerData) {
return layer.id !== _defaultSettings.GEOCODER_LAYER_ID && layer.shouldRenderLayer(layerData);
}
function isLayerVisible(layer, mapLayers) {
return layer.config.isVisible && ( // if layer.id is not in mapLayers, don't render it
!mapLayers || mapLayers && mapLayers[layer.id]);
} // Prepare a dict of layers rendered by the deck.gl
// Note, isVisible: false layer is passed to deck.gl here
// return {[id]: true \ false}
function prepareLayersForDeck(layers, layerData) {
return layers.reduce(function (accu, layer, idx) {
return _objectSpread(_objectSpread({}, accu), {}, (0, _defineProperty2["default"])({}, layer.id, isLayerRenderable(layer, layerData[idx]) && layer.overlayType === _baseLayer.OVERLAY_TYPE.deckgl));
}, {});
} // Prepare a dict of rendered layers rendered in the map
// This includes only the visibile layers for single map view and split map view
// return {[id]: true \ false}
function prepareLayersToRender(layers, layerData, mapLayers) {
return layers.reduce(function (accu, layer, idx) {
return _objectSpread(_objectSpread({}, accu), {}, (0, _defineProperty2["default"])({}, layer.id, isLayerRenderable(layer, layerData[idx]) && isLayerVisible(layer, mapLayers)));
}, {});
}
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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 'layers/base-layer';\nimport {GEOCODER_LAYER_ID} from 'constants/default-settings';\n\n/**\n * Find default layers from fields\n * @type {typeof import('./layer-utils').findDefaultLayer}\n */\nexport function findDefaultLayer(dataset, layerClasses) {\n  if (!dataset) {\n    return [];\n  }\n  const layerProps = Object.keys(layerClasses).reduce((previous, lc) => {\n    const result =\n      typeof layerClasses[lc].findDefaultLayerProps === 'function'\n        ? layerClasses[lc].findDefaultLayerProps(dataset, previous)\n        : {props: []};\n\n    const props = Array.isArray(result) ? result : result.props || [];\n    const foundLayers = result.foundLayers || previous;\n\n    return foundLayers.concat(\n      props.map(p => ({\n        ...p,\n        type: lc,\n        dataId: dataset.id\n      }))\n    );\n  }, []);\n\n  // go through all layerProps to create layer\n  return layerProps.map(props => {\n    const layer = new layerClasses[props.type](props);\n    return typeof layer.setInitialLayerConfig === 'function' && dataset.dataContainer\n      ? layer.setInitialLayerConfig(dataset)\n      : layer;\n  });\n}\n\n/**\n * calculate layer data based on layer type, col Config,\n * return updated layer if colorDomain, dataMap has changed\n * @type {typeof import('./layer-utils').calculateLayerData}\n */\nexport function calculateLayerData(layer, state, oldLayerData) {\n  const {type} = layer;\n\n  if (!type || !layer.hasAllColumns() || !layer.config.dataId) {\n    return {layer, layerData: {}};\n  }\n\n  const layerData = layer.formatLayerData(state.datasets, oldLayerData);\n  return {layerData, layer};\n}\n\n/**\n * Calculate props passed to LayerHoverInfo\n * @type {typeof import('./layer-utils').getLayerHoverProp}\n */\nexport function getLayerHoverProp({\n  interactionConfig,\n  hoverInfo,\n  layers,\n  layersToRender,\n  datasets\n}) {\n  if (interactionConfig.tooltip.enabled && hoverInfo && hoverInfo.picked) {\n    // if anything hovered\n    const {object, layer: overlay} = hoverInfo;\n\n    // deckgl layer to kepler-gl layer\n    const layer = layers[overlay.props.idx];\n\n    if (object && layer && layer.getHoverData && layersToRender[layer.id]) {\n      // if layer is visible and have hovered data\n      const {\n        config: {dataId}\n      } = layer;\n      if (!dataId) {\n        return null;\n      }\n      const {dataContainer, fields} = datasets[dataId];\n      const data = layer.getHoverData(object, dataContainer, fields);\n      const fieldsToShow = interactionConfig.tooltip.config.fieldsToShow[dataId];\n\n      return {\n        data,\n        fields,\n        fieldsToShow,\n        layer\n      };\n    }\n  }\n\n  return null;\n}\n\nexport function renderDeckGlLayer(props, layerCallbacks, idx) {\n  const {\n    datasets,\n    layers,\n    layerData,\n    hoverInfo,\n    clicked,\n    mapState,\n    interactionConfig,\n    animationConfig,\n    mapLayers\n  } = props;\n  const layer = layers[idx];\n  const data = layerData[idx];\n  const {gpuFilter} = datasets[layer.config.dataId] || {};\n  const objectHovered = clicked || hoverInfo;\n  const visible = !mapLayers || (mapLayers && mapLayers[layer.id]);\n  // Layer is Layer class\n  return layer.renderLayer({\n    data,\n    gpuFilter,\n    idx,\n    interactionConfig,\n    layerCallbacks,\n    mapState,\n    animationConfig,\n    objectHovered,\n    visible\n  });\n}\n\nexport function isLayerRenderable(layer, layerData) {\n  return layer.id !== GEOCODER_LAYER_ID && layer.shouldRenderLayer(layerData);\n}\n\nexport function isLayerVisible(layer, mapLayers) {\n  return (\n    layer.config.isVisible &&\n    // if layer.id is not in mapLayers, don't render it\n    (!mapLayers || (mapLayers && mapLayers[layer.id]))\n  );\n}\n\n// Prepare a dict of layers rendered by the deck.gl\n// Note, isVisible: false layer is passed to deck.gl here\n// return {[id]: true \\ false}\nexport function prepareLayersForDeck(layers, layerData) {\n  return layers.reduce(\n    (accu, layer, idx) => ({\n      ...accu,\n      [layer.id]:\n        isLayerRenderable(layer, layerData[idx]) && layer.overlayType === OVERLAY_TYPE.deckgl\n    }),\n    {}\n  );\n}\n\n// Prepare a dict of rendered layers rendered in the map\n// This includes only the visibile layers for single map view and split map view\n// return {[id]: true \\ false}\nexport function prepareLayersToRender(layers, layerData, mapLayers) {\n  return layers.reduce(\n    (accu, layer, idx) => ({\n      ...accu,\n      [layer.id]: isLayerRenderable(layer, layerData[idx]) && isLayerVisible(layer, mapLayers)\n    }),\n    {}\n  );\n}\n"]}