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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | 2x 2x 2x 2x 2x 2x 2x 11x 11x 11x 18x 18x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 12x 17x 1x 1x 16x 2x 14x 14x 34x 34x 34x 17x 17x 17x 3x 14x 14x 5x 9x 9x 9x 2x | const _ = require('lodash') const TableLayerMetadata = require('./table-layer-metadata') const { PointRenderer, LineRenderer, PolygonRenderer } = require('./renderers') const { calculateBounds } = require('@terraformer/spatial') const getSpatialReference = require('./get-spatial-reference') const getGeometryTypeFromGeojson = require('./get-geometry-type-from-geojson') const normalizeExtent = require('./normalize-extent') class FeatureLayerMetadata extends TableLayerMetadata { static create (geojson, options) { const { geojson: normalizedGeojson, options: normalizedOptions } = FeatureLayerMetadata.normalizeInput(geojson, options) const layerMetadata = new FeatureLayerMetadata() return layerMetadata.mixinOverrides(normalizedGeojson, normalizedOptions) } constructor () { super() Object.assign(this, { type: 'Feature Layer', minScale: 0, maxScale: 0, canScaleSymbols: false, drawingInfo: { renderer: {}, labelingInfo: null }, extent: { xmin: -180, ymin: -90, xmax: 180, ymax: 90, spatialReference: { wkid: 4326, latestWkid: 4326 } }, supportsCoordinatesQuantization: false, hasLabels: false }) } mixinOverrides (geojson = {}, options = {}) { super.mixinOverrides(geojson, options) const { renderer, extent, inputCrs, sourceSR, capabilities = {} } = options this.geometryType = getGeometryTypeFromGeojson({ ...geojson, ...options }) this.supportsCoordinatesQuantization = !!capabilities.quantization this._setExtent(geojson, { inputCrs, sourceSR, extent }) this._setRenderer(renderer) this._setDirectOverrides(options) return this } _setExtent (geojson, options) { const extent = getLayerExtent(geojson, options) if (extent) { this.extent = extent } } _setRenderer (renderer) { if (renderer) { this.drawingInfo.renderer = renderer return } if (this.geometryType === 'esriGeometryPolygon') { this.drawingInfo.renderer = new PolygonRenderer() } else Iif (this.geometryType === 'esriGeometryPolyline') { this.drawingInfo.renderer = new LineRenderer() } else { this.drawingInfo.renderer = new PointRenderer() } } _setDirectOverrides (options) { super._setDirectOverrides(options) const { minScale, maxScale } = options _.merge(this, { minScale, maxScale }) } } function getLayerExtent (geojson, options) { const spatialReference = getSpatialReference(geojson, options) || { wkid: 4326, latestWkid: 4326 } const { extent } = options if (extent) { return normalizeExtent(extent, spatialReference) } return calculateExtentFromFeatures(geojson, spatialReference) } function calculateExtentFromFeatures (geojson, spatialReference) { if (!geojson.features || geojson.features.length === 0) { return } try { const [xmin, ymin, xmax, ymax] = calculateBounds(geojson) return { xmin, xmax, ymin, ymax, spatialReference } } catch (error) { console.log(`Could not calculate extent from data: ${error.message}`) } } module.exports = FeatureLayerMetadata |