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253 lines
8.4 KiB
253 lines
8.4 KiB
import fs from "node:fs"
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import path from "node:path"
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import process from "node:process"
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const projectRoot = path.resolve(path.dirname(new URL(import.meta.url).pathname), "..")
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const sourcePath = process.argv[2]
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const targetPath = path.join(projectRoot, "public/datas/yak-industry-chain/artificial_grassland_plots.geojson")
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const summaryPath = path.join(projectRoot, "src/views/yakIndustryChain/artificialGrasslandSummary.json")
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const townshipPath = path.join(projectRoot, "public/datas/geojsons/hongyuan-townships.geojson")
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if (!sourcePath) {
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console.error("Usage: node scripts/prepare-artificial-grassland-data.mjs <source.geojson>")
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process.exit(1)
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}
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const source = readJson(sourcePath)
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const townships = readJson(townshipPath)
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const sourceLabel = "21.95万亩种草矢量数据"
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const displayTownOrder = (townships.features || []).map((feature) => feature.properties?.name).filter(Boolean)
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const seenTopology = new Set()
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const features = []
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for (const sourceFeature of source.features || []) {
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const candidate = toPlotCandidate(sourceFeature)
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if (!candidate) continue
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const topologyKey = canonicalRing(candidate.ring)
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if (!topologyKey || seenTopology.has(topologyKey)) continue
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seenTopology.add(topologyKey)
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const name = cleanName(sourceFeature.properties?.name)
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const category = getPlotCategory(name)
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const center = getRingCenter(candidate.ring)
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const town = getTownByPoint(center, townships.features || [])
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const id = `AG-${String(features.length + 1).padStart(3, "0")}`
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features.push({
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type: "Feature",
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properties: {
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id,
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plot_code: id,
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name,
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plot_name: name,
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stageKey: "artificial-grassland",
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stage_name: "人工种草",
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town,
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town_name: town,
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plot_category: category.name,
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plot_category_key: category.key,
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data_status: "待核定",
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source_type: candidate.sourceType,
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data_source: sourceLabel,
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geometry_note: candidate.note,
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},
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geometry: {
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type: "Polygon",
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coordinates: [closeRing(candidate.ring)],
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},
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})
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}
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const summary = buildSummary(features, displayTownOrder)
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writeJson(targetPath, {
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type: "FeatureCollection",
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name: "artificial_grassland_plots",
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generatedAt: new Date().toISOString(),
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description: "人工种草空间资料。图斑为待核定资料，不作为正式面积统计口径。",
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features,
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})
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writeJson(summaryPath, summary)
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console.log(`Generated ${features.length} artificial grassland plots.`)
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console.log(`GeoJSON: ${targetPath}`)
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console.log(`Summary: ${summaryPath}`)
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function readJson(filePath) {
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return JSON.parse(fs.readFileSync(filePath, "utf8"))
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}
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function writeJson(filePath, value) {
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fs.mkdirSync(path.dirname(filePath), { recursive: true })
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fs.writeFileSync(filePath, `${JSON.stringify(value, null, 2)}\n`, "utf8")
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}
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function toPlotCandidate(feature = {}) {
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const geometry = feature.geometry || {}
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if (geometry.type === "Polygon") {
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const ring = cleanRing(geometry.coordinates?.[0])
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if (ring.length < 3) return null
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return {
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ring,
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sourceType: "面图斑",
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note: "原始面图斑已闭合后展示",
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}
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}
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if (geometry.type !== "LineString") return null
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const originalRing = Array.isArray(geometry.coordinates) ? geometry.coordinates : []
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if (originalRing.length < 4 || !samePoint(originalRing[0], originalRing.at(-1))) return null
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const ring = cleanRing(originalRing)
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if (ring.length < 3) return null
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return {
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ring,
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sourceType: "边界图斑",
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note: "原始闭合边界转换为图斑展示",
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}
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}
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function cleanRing(coordinates = []) {
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const ring = []
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coordinates.forEach((coordinate) => {
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if (!Array.isArray(coordinate) || coordinate.length < 2) return
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const next = [roundCoordinate(coordinate[0]), roundCoordinate(coordinate[1])]
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if (!ring.length || !samePoint(ring.at(-1), next)) ring.push(next)
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})
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if (ring.length > 1 && samePoint(ring[0], ring.at(-1))) ring.pop()
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return ring
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}
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function closeRing(ring = []) {
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return [...ring, [...ring[0]]]
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}
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function canonicalRing(ring = []) {
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if (ring.length < 3) return ""
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const variants = [ring, [...ring].reverse()]
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let result = ""
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variants.forEach((variant) => {
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variant.forEach((_, index) => {
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const rotated = [...variant.slice(index), ...variant.slice(0, index)]
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const signature = rotated.map((point) => `${point[0]},${point[1]}`).join("|")
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if (!result || signature < result) result = signature
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})
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})
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return result
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}
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function getRingCenter(ring = []) {
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if (!ring.length) return [0, 0]
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const total = ring.reduce(
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(result, point) => [result[0] + Number(point[0] || 0), result[1] + Number(point[1] || 0)],
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[0, 0],
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)
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return [total[0] / ring.length, total[1] / ring.length]
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}
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function getTownByPoint(point, townshipFeatures) {
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for (const feature of townshipFeatures) {
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const geometry = feature.geometry || {}
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const polygons = geometry.type === "MultiPolygon" ? geometry.coordinates : geometry.type === "Polygon" ? [geometry.coordinates] : []
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if (polygons.some((polygon) => isPointInRing(point, polygon?.[0] || []))) {
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return feature.properties?.name || "未归属"
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}
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}
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return "未归属"
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}
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function isPointInRing(point, ring = []) {
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if (!Array.isArray(point) || ring.length < 3) return false
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let inside = false
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for (let index = 0, previous = ring.length - 1; index < ring.length; previous = index++) {
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const [currentX, currentY] = ring[index]
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const [previousX, previousY] = ring[previous]
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const crosses = (currentY > point[1]) !== (previousY > point[1])
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&& point[0] < ((previousX - currentX) * (point[1] - currentY)) / (previousY - currentY) + currentX
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if (crosses) inside = !inside
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}
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return inside
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}
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function getPlotCategory(name) {
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if (name.startsWith("撒播")) return { key: "broadcast", name: "撒播图斑" }
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if (name.startsWith("总范围")) return { key: "high-yield", name: "高产稳产范围" }
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if (name.startsWith("调拨")) return { key: "allocation", name: "调拨地块" }
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if (name.includes("地块")) return { key: "project-plot", name: "项目地块" }
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return { key: "unclassified", name: "待分类图斑" }
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}
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function buildSummary(plotFeatures, townOrder) {
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const rows = plotFeatures.map((feature) => feature.properties || {})
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const townRows = townOrder.map((name) => {
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const value = rows.filter((item) => item.town === name).length
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return {
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key: name,
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name,
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value,
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unit: "个",
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extra: value ? "待核定图斑" : "暂无图斑",
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zero: value === 0,
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}
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})
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const categoryRows = groupRows(rows, "plot_category").map((item) => ({
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...item,
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unit: "个",
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}))
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const sourceRows = groupRows(rows, "source_type").map((item) => ({
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...item,
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unit: "个",
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}))
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const plotRows = rows
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.map((item) => ({
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key: item.id,
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id: item.id,
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name: item.name,
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fullName: item.name,
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town: item.town,
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category: item.plot_category,
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status: item.data_status,
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stageKey: "artificial-grassland",
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stageName: "人工种草",
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canLocate: true,
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locateText: "定位",
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searchText: [item.name, item.town, item.plot_category, item.data_status].filter(Boolean).join(" "),
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}))
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.sort((left, right) => Number(right.category === "项目地块") - Number(left.category === "项目地块") || left.name.localeCompare(right.name, "zh-CN"))
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return {
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generatedAt: new Date().toISOString(),
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sourceLabel,
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statusLabel: "待核定",
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totalPlots: rows.length,
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coveredTowns: townRows.filter((item) => item.value > 0).length,
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projectPlots: rows.filter((item) => item.plot_category === "项目地块").length,
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pendingPlots: rows.length,
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townRows,
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categoryRows,
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sourceRows,
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plotRows,
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}
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}
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function groupRows(rows, key) {
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const grouped = new Map()
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rows.forEach((item) => {
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const name = String(item[key] || "未分类")
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grouped.set(name, (grouped.get(name) || 0) + 1)
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})
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return [...grouped.entries()]
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.map(([name, value]) => ({ key: name, name, value }))
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.sort((left, right) => right.value - left.value || left.name.localeCompare(right.name, "zh-CN"))
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}
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function cleanName(value) {
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const text = String(value || "").trim()
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return text || "未命名图斑"
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}
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function roundCoordinate(value) {
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return Number(Number(value).toFixed(8))
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}
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function samePoint(left = [], right = []) {
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return Math.abs(Number(left[0]) - Number(right[0])) < 1e-8 && Math.abs(Number(left[1]) - Number(right[1])) < 1e-8
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}
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