@deck.gl/experimental-layers
Version:
Experimental layers for deck.gl
148 lines (131 loc) • 5.73 kB
JavaScript
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
import { GeoJsonLayer, CompositeLayer } from 'deck.gl';
import TileCache from './utils/tile-cache';
const defaultProps = {
renderSubLayers: props => new GeoJsonLayer(props),
getTileData: (_ref) => {
let x = _ref.x,
y = _ref.y,
z = _ref.z;
return Promise.resolve(null);
},
onDataLoaded: () => {},
// eslint-disable-next-line
onGetTileDataError: err => console.error(err),
maxZoom: null,
minZoom: null,
maxCacheSize: null
};
export default class TileLayer extends CompositeLayer {
initializeState() {
const _this$props = this.props,
maxZoom = _this$props.maxZoom,
minZoom = _this$props.minZoom,
getTileData = _this$props.getTileData,
onGetTileDataError = _this$props.onGetTileDataError;
this.state = {
tiles: [],
tileCache: new TileCache({
getTileData,
maxZoom,
minZoom,
onGetTileDataError
}),
isLoaded: false
};
}
shouldUpdateState(_ref2) {
let changeFlags = _ref2.changeFlags;
return changeFlags.somethingChanged;
}
updateState(_ref3) {
let props = _ref3.props,
oldProps = _ref3.oldProps,
context = _ref3.context,
changeFlags = _ref3.changeFlags;
const onDataLoaded = props.onDataLoaded,
onGetTileDataError = props.onGetTileDataError;
if (changeFlags.updateTriggersChanged && (changeFlags.updateTriggersChanged.all || changeFlags.updateTriggersChanged.getTileData)) {
const getTileData = props.getTileData,
maxZoom = props.maxZoom,
minZoom = props.minZoom,
maxCacheSize = props.maxCacheSize;
this.state.tileCache.finalize();
this.setState({
tileCache: new TileCache({
getTileData,
maxSize: maxCacheSize,
maxZoom,
minZoom,
onGetTileDataError
})
});
}
if (changeFlags.viewportChanged) {
const viewport = context.viewport;
const z = this.getLayerZoomLevel();
if (viewport.id !== 'DEFAULT-INITIAL-VIEWPORT') {
this.state.tileCache.update(viewport, tiles => {
const currTiles = tiles.filter(tile => tile.z === z);
const allCurrTilesLoaded = currTiles.every(tile => tile.isLoaded);
this.setState({
tiles,
isLoaded: allCurrTilesLoaded
});
if (!allCurrTilesLoaded) {
Promise.all(currTiles.map(tile => tile.data)).then(() => {
this.setState({
isLoaded: true
});
onDataLoaded(currTiles.filter(tile => tile._data).map(tile => tile._data));
});
} else {
onDataLoaded(currTiles.filter(tile => tile._data).map(tile => tile._data));
}
});
}
}
}
getPickingInfo(_ref4) {
let info = _ref4.info,
sourceLayer = _ref4.sourceLayer;
info.sourceLayer = sourceLayer;
info.tile = sourceLayer.props.tile;
return info;
}
getLayerZoomLevel() {
const z = Math.floor(this.context.viewport.zoom);
const _this$props2 = this.props,
maxZoom = _this$props2.maxZoom,
minZoom = _this$props2.minZoom;
if (maxZoom && parseInt(maxZoom, 10) === maxZoom && z > maxZoom) {
return maxZoom;
} else if (minZoom && parseInt(minZoom, 10) === minZoom && z < minZoom) {
return minZoom;
}
return z;
}
renderLayers() {
// eslint-disable-next-line no-unused-vars
const _this$props3 = this.props,
getTileData = _this$props3.getTileData,
renderSubLayers = _this$props3.renderSubLayers,
visible = _this$props3.visible,
geoProps = _objectWithoutProperties(_this$props3, ["getTileData", "renderSubLayers", "visible"]);
const z = this.getLayerZoomLevel();
return this.state.tiles.map(tile => {
return renderSubLayers(_objectSpread({}, geoProps, {
id: `${this.id}-${tile.x}-${tile.y}-${tile.z}`,
data: tile.data,
visible: visible && (!this.state.isLoaded || tile.z === z),
tile
}));
});
}
}
TileLayer.layerName = 'TileLayer';
TileLayer.defaultProps = defaultProps;
//# sourceMappingURL=tile-layer.js.map