25:["$","title",null,{"children":"DeckGL before path override | mheard03 | Observable"}] 49:T559,class FeaturesLayer extends deck.CompositeLayer { static { FeaturesLayer.layerName = "FeaturesLayer"; FeaturesLayer.defaultProps = Object.assign({}, deck.GeoJsonLayer.defaultProps, { stroked: true, filled: true, extruded: false, wrapLongitude: true, autoHighlight: true, lineWidthUnits: 'common', lineJointRounded: true, lineWidthMinPixels: 1, lineWidthMaxPixels: 10, getLineWidth: 1, getFillColor: f => [128, 128, 128], getLineColor: f => [255, 0, 0], getOffset: f => 0.5, extensions: [new deck.PathStyleExtension({offset: true})], getFeatureId: f => f.properties.name }); } getForwardedProps() { const forwarded = { updateTriggers: {} }; for (let key of Object.keys(deck.GeoJsonLayer.defaultProps)) { if (key in this.props) forwarded[key] = this.props[key]; if (key in this.props.updateTriggers) forwarded.updateTriggers[key] = this.props.updateTriggers[key]; } return forwarded; } renderLayers() { const layers = []; for (let feature of this.props.data ?? []) { const id = this.props.getFeatureId(feature); const layer = new deck.GeoJsonLayer(this.getForwardedProps(), this.getSubLayerProps({ id }), { data: feature }); layers.push(layer); } return layers; } }4a:T737,countryRanks = { function getBbox(coords) { let x0 = Infinity, y0 = Infinity, x1 = -Infinity, y1 = -Infinity; for (let [x, y] of coords) { if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y; } return [x0, y0, x1, y1]; } function getBboxes(geometry) { let bboxes; if (geometry.type == "MultiPolygon") { bboxes = geometry.coordinates.map(p => getBbox(p[0])); } if (geometry.type == "Polygon") { bboxes = [getBbox(geometry.coordinates[0])]; } bboxes.forEach(b => b.area = Bbox.area(b)); bboxes.sort((a,b) => b.area - a.area); return bboxes; } function getDistance(bboxes1, bboxes2) { let minDistance = Infinity; for (let bbox1 of bboxes1) { for (let bbox2 of bboxes2) { const distance = Bbox.getDistance(bbox1, bbox2, [360]); if (distance == 0) return 0; if (distance < minDistance) minDistance = distance; } } return minDistance; } const countryInfos = []; for (let i = 0; i < countries_nostitch.length; i++) { const feature = countries_nostitch[i]; const bboxes = getBboxes(feature.geometry); const area = bboxes.reduce((sum, b) => sum + b.area, 0); countryInfos.push({ feature, bboxes, area, distances: [] }); } for (let i = 0; i < countryInfos.length; i++) { const bboxes_i = countryInfos[i].bboxes; for (let j = i; j < countryInfos.length; j++) { const bboxes_j = countryInfos[j].bboxes; const distance = getDistance(bboxes_i, bboxes_j); countryInfos[i].distances[j] = countryInfos[j].distances[i] = distance; } } for (let countryInfo of countryInfos) { countryInfo.touchCount = countryInfo.distances.filter(d => d < 15).length - 1; } return _.sortBy(countryInfos, c => -c.touchCount); }4b:T411,rangesDistance = { const RANGE_LESS_THAN = 1; const RANGE_OVERLAPS = 0; const RANGE_GREATER_THAN = -1; function rangeCompare([min, max], value) { if (value < min) return RANGE_LESS_THAN; if (value > max) return RANGE_GREATER_THAN; return RANGE_OVERLAPS; } function rangesCompare(range1, range2) { const compare1 = rangeCompare(range1, range2[0]); const compare2 = rangeCompare(range1, range2[1]); if (compare1 == compare2) return compare1; return RANGE_OVERLAPS; } function rangesDistance(range1, range2) { debugger; const compare1 = rangeCompare(range1, range2[0]); const compare2 = rangeCompare(range1, range2[1]); let compareResult = RANGE_OVERLAPS; if (compare1 == compare2) compareResult = compare1; if (compareResult == RANGE_OVERLAPS) return 0; const lowRange = (compareResult == RANGE_GREATER_THAN) ? range1 : range2; const highRange = (lowRange == range2) ? range1 : range2; return highRange[0] - lowRange[1]; } return rangesDistance; }4c:T8d9,Bbox = { const RANGE_LESS_THAN = 1; const RANGE_OVERLAPS = 0; const RANGE_GREATER_THAN = -1; function rangeCompare([min, max], value) { if (value < min) return RANGE_LESS_THAN; if (value > max) return RANGE_GREATER_THAN; return RANGE_OVERLAPS; } function rangesDistance(range1, range2, wrapDistance) { const compare1 = rangeCompare(range1, range2[0]); const compare2 = rangeCompare(range1, range2[1]); let compareResult = RANGE_OVERLAPS; if (compare1 == compare2) compareResult = compare1; if (compareResult == RANGE_OVERLAPS) return 0; const lowRange = (compareResult == RANGE_GREATER_THAN) ? range1 : range2; const highRange = (lowRange == range2) ? range1 : range2; const distance = highRange[0] - lowRange[1]; if (!wrapDistance) return distance; const lowRangeWrapped = [lowRange[0] + wrapDistance, lowRange[1] + wrapDistance]; const wrappedDistance = lowRangeWrapped[0] - highRange[1]; return Math.min(distance, wrappedDistance); } function getDistanceVector(bbox1, bbox2, worldSize) { const [worldSizeX, worldSizeY] = [...(worldSize ?? []), 0, 0]; const dx = rangesDistance([bbox1[0], bbox1[2]], [bbox2[0], bbox2[2]], worldSizeX); const dy = rangesDistance([bbox1[1], bbox1[3]], [bbox2[1], bbox2[3]], worldSizeY); return [dx, dy]; } class Bbox { static getDistance(bbox1, bbox2, worldSize) { const [dx, dy] = getDistanceVector(bbox1, bbox2, worldSize); if (dx == 0) return dy; if (dy == 0) return dx; return Math.sqrt(dx**2 + dy**2); } static intersects(bbox1, bbox2, worldSize) { const [dx, dy] = getDistanceVector(bbox1, bbox2, worldSize); return dx * dy == 0; } static width(bbox) { return bbox[2] - bbox[0]; } static height(bbox) { return bbox[3] - bbox[1]; } static area(bbox) { return Bbox.width(bbox) * Bbox.height(bbox); } static fromPoints(points) { let x0 = Infinity, y0 = Infinity, x1 = -Infinity, y1 = -Infinity; for (let [x, y] of points) { if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y; } return [x0, y0, x1, y1]; } } return Bbox; }4d:T75e,_countryRanks = { function getBbox(coords) { let x0 = Infinity, y0 = Infinity, x1 = -Infinity, y1 = -Infinity; for (let [x, y] of coords) { if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y; } return [x0, y0, x1, y1]; } function getBboxes(geometry) { if (geometry.type == "MultiPolygon") { return [...geometry.coordinates.map(p => getBbox(p[0]))]; } if (geometry.type == "Polygon") { return getBbox(geometry.coordinates[0]); } } // const transform = jsts.Transformation.translationInstance(360, 0); const countryInfos = []; for (let i = 0; i < countries.features.length; i++) { const feature = countries.features[i]; debugger; const bboxes = getBboxes(feature.geometry); countryInfos.push({ feature, bboxes }); continue; let geom = jsts.parse(feature).geometry; geom = jsts.factory.createGeometryCollection([geom, transform.transform(geom)]); geom = geom.buffer(0); ////geom = geom.union(); //geom = jsts.Simplifier.simplify(jsts.parse(feature).geometry.buffer(0.05), 0.05); const countryInfo = { feature, geom, area: geom.getArea(), distances: [] }; countryInfo.distances[i] = 0; countryInfos.push(countryInfo); } return countryInfos; /* let distCount = 0; let totalDistCount = (countryInfos.length - 1)**2 for (let i = 0; i < countryInfos.length; i++) { const geom_i = countryInfos[i].geom; for (let j = i+1; j < countryInfos.length; j++) { const geom_j = countryInfos[j].geom; const distance = geom_i.intersects(geom_j) ? 0 : geom_i.distance(geom_j); countryInfos[i].distances[j] = countryInfos[j].distances[i] = Math.round(distance); distCount++; if (distCount % 2000 == 0) yield `${distCount} / ${totalDistCount}`; } } yield countryInfos; */ }4e:[] 29:{"id":"7366e2f188e53fe4","slug":null,"title":"DeckGL before path override","thumbnail":"67f8a9c11c98f7fe3dd39179df2164b4a17e741071a54758b8dfc246b99853d1","access_level":"public","create_time":"$D2023-11-04T17:24:17.367Z","update_time":"$D2023-11-04T17:24:17.367Z","view_time":null,"first_public_time":"$D2023-11-04T17:24:17.367Z","has_unpublished_edits":null,"fork":{"id":"ed7ca216d595fad3","slug":null,"title":"DeckGL","owner":{"id":"02d4ccf8951f2f02","login":"mheard03","name":""}},"stars":0,"starred":false,"owner":{"type":"team","id":"02d4ccf8951f2f02","login":"mheard03","name":"","avatar_url":"https://avatars-next.observableusercontent.com/ae42ada5dc924d7cd620a4ae3bb6279a3e82fb649668ee6c0729bdada1ebf016","tier":"starter_2024","bio":"","following":false},"version":664,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"6afb6cac5f188ec0","login":"mheard03","name":"","avatar_url":"https://avatars-next.observableusercontent.com/ae42ada5dc924d7cd620a4ae3bb6279a3e82fb649668ee6c0729bdada1ebf016","tier":null,"bio":"","following":false}],"members":[{"type":"individual","id":"6afb6cac5f188ec0","login":"mheard03","name":"","avatar_url":"https://avatars-next.observableusercontent.com/ae42ada5dc924d7cd620a4ae3bb6279a3e82fb649668ee6c0729bdada1ebf016","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"DeckGL before path override","cells":[{"id":0,"value":"# DeckGL before path override","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":36,"value":"container = html `

`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":38,"value":"deckgl = {\n const deckgl = new deck.DeckGL({\n views: new deck.MapView({repeat: true}),\n container,\n controller: true,\n initialViewState: {longitude: 0, latitude: 35, zoom: 1},\n layers: [new FeaturesLayer({\n id: 'countries',\n data: countries.features\n })]\n });\n invalidation.then(() => {\n try {\n deckgl.finalize();\n }\n catch (e) {\n console.log('error finalizing deckgl instance', e);\n }\n container.innerHTML = \"\";\n });\n return deckgl;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":183,"value":"fl = deckgl.layerManager.getLayers()[0].getSubLayers()[0]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":322,"value":"Object.keys(deck.GeoJsonLayer)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":316,"value":"Object.getPrototypeOf(fl).layerName","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":189,"value":"fl.props.id","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":219,"value":"fl.getSubLayers()[0] instanceof deck.SolidPolygonLayer // .PathLayer","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":412,"value":"deck.PathStyleExtension.defaultProps","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":408,"value":"class InnerBorderExtension extends deck.PathStyleExtension {\n static {\n InnerBorderExtension.layerName = \"InnerBorderExtension\";\n InnerBorderExtension.defaultProps = {}\n }\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":350,"value":"class PPGeoJsonLayer extends deck.GeoJsonLayer {\n static {\n PPGeoJsonLayer.layerName = \"PPGeoJsonLayer\";\n }\n renderLayers() {\n const layers = super.renderLayers();\n const ppEffect = new deck.PostProcessEffect(luma.shadertools.brightnessContrast, { brightness: 1, contrast: 1 });\n const pathLayers = layers.filter(l => l instanceof deck.PathLayer);\n pathLayers.forEach(p => p.updateState({ effects: [ppEffect] }));\n return layers;\n }\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":310,"value":"class MaskedGeoJsonLayer extends deck.GeoJsonLayer {\n static {\n MaskedGeoJsonLayer.layerName = \"MaskedGeoJsonLayer\";\n MaskedGeoJsonLayer.defaultProps = {\n extensions: [new deck.MaskExtension(), new deck.PathStyleExtension({offset: true})]\n }\n }\n renderLayers() {\n const layers = super.renderLayers();\n\n const pathLayers = layers.filter(l => l instanceof deck.PathLayer);\n if (pathLayers.length == 0) return layers;\n \n const maskLayer = super._renderPolygonLayer();\n maskLayer.props.id = maskLayer.props.id.replace(\"polygons-fill\", \"polygons-mask\");\n maskLayer.props.operation = \"mask\";\n debugger;\n // maskLayer.props.extensions.push(new deck.MaskExtension());\n layers.unshift(maskLayer);\n \n pathLayers.forEach(p => {\n p.props.maskId = maskLayer.props.id;\n p.props.maskByInstance = false;\n });\n return layers;\n }\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":172,"value":"$49","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":40,"value":"geoJsonLayer = new deck.GeoJsonLayer({\n id: 'countries',\n data,\n stroked: true,\n filled: true,\n extruded: false,\n wrapLongitude: true,\n autoHighlight: true,\n\n lineWidthUnits: 'common',\n lineJointRounded: true,\n lineWidthMinPixels: 1,\n lineWidthMaxPixels: 10,\n getLineWidth: 0.75,\n getFillColor: [0,0,0,128],\n getLineColor: f => [0, 0, 0, 0],\n getOffset: f => 0.5,\n\n extensions: [new deck.PathStyleExtension({offset: true})],\n \n pickable: true\n});","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":3,"value":"countries = fetch('https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_50m_admin_0_scale_rank.geojson')\n .then(resp => resp.json())\n .then(geo => d3.geoStitch(geo))\n .then(result => {\n // Join results\n const countries = new Map();\n for (const feature of result.features) {\n const name = feature.properties.sr_subunit;\n if (!countries.has(name)) countries.set(name, []);\n countries.get(name).push(feature);\n }\n const features = Array.from(countries.entries())\n .map(([name, features], i) => {\n // const color = [55 + i / 200, 55 + i % 200, 128];\n return (features.length === 1)\n ? turf.polygon(features[0].geometry.coordinates, {name})\n : turf.multiPolygon(features.map(f => f.geometry.coordinates), {name});\n // turf.coordEach(feature, c => c[2] = i);\n });\n const fc = turf.featureCollection(features);\n return d3.geoStitch(fc);\n });","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":5,"value":"d3 = require(\"d3\", \"d3-geo\", \"d3-geo-projection\");","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"import { sampleTopology as topoJson } from \"8c9dbd3e4bfdb2e9\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":374,"value":"deck.PostProcessEffect","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":425,"value":"### Stencil JP","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":445,"value":"jf = countryRanks[0].geom","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":525,"value":"jf.getGeometryType();","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":447,"value":"_.groupBy(countryRanks.flatMap(r => r.distances))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":512,"value":"transform = jsts.Transformation.translationInstance(360, 0);","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":535,"value":"{\n const [,b1y1,,b1y2] = [1,2,3,4];\n return { b1y1, b1y2 }\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":574,"value":"$4a","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":584,"value":"Bbox.getDistance([180,5,354,178], [0,0,2,2], [360, 180]);","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":582,"value":"$4b","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":533,"value":"$4c","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":577,"value":"countries_nostitch = fetch('https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_50m_admin_0_scale_rank.geojson')\n .then(resp => resp.json())\n .then(geo => d3.geoStitch(geo))\n .then(result => {\n // Join results\n const countries = new Map();\n for (const feature of result.features) {\n const name = feature.properties.sr_subunit;\n if (!countries.has(name)) countries.set(name, []);\n countries.get(name).push(feature);\n }\n const features = Array.from(countries.entries())\n .map(([name, features], i) => {\n // const color = [55 + i / 200, 55 + i % 200, 128];\n return (features.length === 1)\n ? turf.polygon(features[0].geometry.coordinates, {name})\n : turf.multiPolygon(features.map(f => f.geometry.coordinates), {name});\n // turf.coordEach(feature, c => c[2] = i);\n });\n return features;\n });","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":431,"value":"$4d","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":423,"value":"### Imports","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":12,"value":"deck = require('deck.gl@8.9/dist.min.js');","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":382,"value":"luma = {\n await deck;\n window.luma.shadertools = await import('https://cdn.skypack.dev/@luma.gl/shadertools@8.5.21?min');\n return window.luma;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":420,"value":"jsts = {\n const jsts = await require('jsts@2.11/dist/jsts.min.js');\n const result = { \n ...jsts.geom,\n Orientation: jsts.algorithm.Orientation,\n DistanceOp: jsts.operation.distance.DistanceOp,\n ConvexHull: jsts.algorithm.ConvexHull,\n Simplifier: jsts.simplify.DouglasPeuckerSimplifier,\n Transformation: jsts.geom.util.AffineTransformation\n };\n delete result.util;\n \n const factory = new jsts.geom.GeometryFactory(new jsts.geom.PrecisionModel(), -1); // Integer precision, SRID -1\n const reader = new jsts.io.GeoJSONReader(factory);\n const writer = new jsts.io.GeoJSONWriter(factory);\n\n result.factory = factory;\n result.parse = g => reader.read(g);\n result.stringify = g => writer.write(g);\n \n return result;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":24,"value":"turf = require('@turf/turf@6.5')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":639,"value":"martinez = await import('https://cdn.skypack.dev/martinez-polygon-clipping@0.7.3?min')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":643,"value":"offset = (await import('https://cdn.skypack.dev/polygon-offset@0.3.2?min')).default","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":657,"value":"countries_nostitch[0].geometry","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":660,"value":"polyUtil.offset(countries_nostitch[0].geometry.coordinates, 1)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":646,"value":"polyUtil = {\n const { diff, intersection, union, xor } = await import('https://cdn.skypack.dev/martinez-polygon-clipping@0.7.3?min');\n const OffsetModule = (await import('https://cdn.skypack.dev/polygon-offset@0.3.2?min')).default\n const offsetInstance = new OffsetModule();\n\n function offset(points, distance) {\n return offsetInstance.data(points).offset(distance);\n }\n \n return { diff, intersection, union, xor, offset };\n /*\n var margined = offset.data(points).margin(10);\n var padding = offset.data(points).padding(10);\n \n // decides from the sign of x: negative for padding\n var unknown = offset.data(points).arcSegments(3).offset(x);\n */\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W4e","stdlib":"1"}} 24:null