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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| /* eslint-env browser */ | ||
|
|
||
| import { H3ClusterLayer } from '@deck.gl/geo-layers'; | ||
| import { ViewMode } from '@nebula.gl/edit-modes'; | ||
| import { polyfill } from 'h3-js'; | ||
| import EditableGeoJsonLayer from './editable-geojson-layer'; | ||
| import EditableLayer from './editable-layer'; | ||
|
|
||
| const DEFAULT_EDIT_MODE = ViewMode; | ||
| const DEFAULT_H3_RESOLUTION = 9; | ||
|
|
||
| const defaultProps = { | ||
| mode: DEFAULT_EDIT_MODE, | ||
|
|
||
| // EditableGeoJsonLayer | ||
| geoJsonData: {}, | ||
| ...EditableGeoJsonLayer.defaultProps, | ||
|
|
||
| // h3 layer | ||
| h3Data: {}, | ||
| filled: false, | ||
| stroked: true, | ||
| lineWidthScale: 1, | ||
| lineWidthMinPixels: 1, | ||
| lineWidthMaxPixels: Number.MAX_SAFE_INTEGER, | ||
| lineWidthUnits: 'pixels', | ||
| getHexagons: (d) => d.hexIds, | ||
| resolution: DEFAULT_H3_RESOLUTION, | ||
| }; | ||
|
|
||
| export default class EditableH3Layer extends EditableLayer { | ||
| static layerName = 'EditableH3Layer'; | ||
| static defaultProps = defaultProps; | ||
|
|
||
| initializeState() { | ||
| super.initializeState(); | ||
|
|
||
| this.setState({ | ||
| tentativeHexagonIDs: [], | ||
| }); | ||
| } | ||
|
|
||
| getDerivedHexagonIDs(coords) { | ||
| return polyfill(coords, this.props.resolution, true); | ||
| } | ||
|
|
||
| renderLayers() { | ||
| const layers: any = [ | ||
| new EditableGeoJsonLayer( | ||
| this.getSubLayerProps({ | ||
| id: 'editable-geojson', | ||
|
|
||
| mode: this.props.mode, | ||
| data: { | ||
| type: 'FeatureCollection', | ||
| features: [], | ||
| }, | ||
| selectedFeatureIndexes: this.props.selectedFeatureIndexes || [], | ||
|
|
||
| onEdit: (editAction) => { | ||
| const { editType, editContext } = editAction; | ||
|
|
||
| switch (editType) { | ||
| case 'updateTentativeFeature': | ||
| // tentative feature updates, updated on every pointer move | ||
| if (editContext.feature.geometry.type === 'Polygon') { | ||
| const coords = editContext.feature.geometry.coordinates; | ||
| const hexIDs = this.getDerivedHexagonIDs(coords); | ||
|
|
||
| this.setState({ tentativeHexagonIDs: hexIDs }); | ||
| } | ||
| break; | ||
| case 'addFeature': | ||
| // once the shape is finished drawing, calculate final hexagons | ||
| let finalHexagonIDs; | ||
| const committedHexagonIDs = new Set(this.getHexIdsFromH3Data()); | ||
| const tentativeHexagonIDs = new Set(this.state.tentativeHexagonIDs); | ||
|
|
||
| switch (this.props.modeConfig.booleanOperation) { | ||
| case 'union': | ||
| finalHexagonIDs = [ | ||
| ...new Set([...committedHexagonIDs, ...tentativeHexagonIDs]), | ||
| ]; | ||
| break; | ||
| case 'intersection': | ||
| finalHexagonIDs = [...committedHexagonIDs].filter((hexID: string) => | ||
| tentativeHexagonIDs.has(hexID) | ||
| ); | ||
| break; | ||
| case 'difference': | ||
| finalHexagonIDs = [...committedHexagonIDs].filter( | ||
| (hexID: string) => !tentativeHexagonIDs.has(hexID) | ||
| ); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
|
||
| this.setState({ | ||
| tentativeHexagonIDs: [], | ||
| }); | ||
|
|
||
| this.props.onEdit({ updatedData: finalHexagonIDs }); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| }, | ||
| }) | ||
| ), | ||
|
|
||
| new H3ClusterLayer( | ||
| this.getSubLayerProps({ | ||
| id: 'tentative-hexagons', | ||
| data: [ | ||
| { | ||
| count: this.state.tentativeHexagonIDs.length, | ||
| hexIds: this.state.tentativeHexagonIDs, | ||
| }, | ||
| ], | ||
| getHexagons: (d) => d.hexIds, | ||
| }) | ||
| ), | ||
| new H3ClusterLayer( | ||
| this.getSubLayerProps({ | ||
| id: 'hexagons', | ||
| data: this.props.h3Data, | ||
| getHexagons: this.props.getHexagons, | ||
| }) | ||
| ), | ||
| ]; | ||
| return layers; | ||
| } | ||
|
|
||
| // because h3Data is an array of hexagon data, we take the cumulative hexIds from all entries | ||
| getHexIdsFromH3Data() { | ||
| let cumulativeHexIds = []; | ||
| this.props.h3Data.forEach( | ||
| (h3Data) => (cumulativeHexIds = cumulativeHexIds.concat(h3Data.hexIds)) | ||
| ); | ||
| return cumulativeHexIds; | ||
| } | ||
|
|
||
| getCursor({ isDragging }: { isDragging: boolean }) { | ||
| let { cursor } = this.state; | ||
| if (!cursor) { | ||
| // default cursor | ||
| cursor = isDragging ? 'grabbing' : 'grab'; | ||
| } | ||
| return cursor; | ||
| } | ||
| } |
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