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@ -14,6 +14,8 @@ import { AnimationService } from './animation.service' |
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import type { MarkerData, MapProps } from '../types/map.types' |
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import { createMarkerStyle, getClusterMarkerData, getStatusColor } from '../utils/map.utils' |
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import { ANIMATION_CONFIG } from '../constants/map.constants' |
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// 防抖
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import { debounce } from 'lodash-es' |
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export class MarkerService { |
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private map: Map | null = null |
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markerLayer: VectorLayer<VectorSource | Cluster> | null = null |
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@ -38,21 +40,25 @@ export class MarkerService { |
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/** |
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* 创建标记图层 |
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*/ |
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createMarkerLayer(props: MapProps) { |
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// console.log('createMarkerLayer')
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// this.map?.removeLayer(this.markerLayer)
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createMarkerLayer = debounce((props: MapProps) => { |
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console.time('updateData') |
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this.updateData(props) |
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console.timeEnd('updateData') |
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console.time('createMarkerLayerFromProps') |
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this.createMarkerLayerFromProps(props) |
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} |
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console.timeEnd('createMarkerLayerFromProps') |
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}, 1000) |
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/** |
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* 更新标记数据 |
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*/ |
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updateData(props: MapProps): void { |
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this.animationService?.clear() |
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this.vectorSource.clear() |
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// 添加标记
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const markers = props.markers || [] |
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const features: Feature<Point>[] = [] |
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markers.forEach((marker) => { |
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const feature = new Feature({ |
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geometry: new Point(fromLonLat(marker.coordinates)), |
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@ -61,26 +67,84 @@ export class MarkerService { |
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const statusColor = marker.statusColor || '' |
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feature.setStyle(createMarkerStyle(statusColor)) |
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this.vectorSource.addFeature(feature) |
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features.push(feature) |
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}) |
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this.vectorSource.addFeatures(features) |
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this.getSinglePointsInView() |
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} |
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setClusterDistance= debounce(()=> { |
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if (!this.map) return |
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const clusterLayer = this.markerLayer |
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if (!clusterLayer) return |
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const clusterSource = clusterLayer.getSource() as Cluster<Feature<Point>> |
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if (!clusterSource) return |
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const zoom = this.map.getView().getZoom() || 0 |
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let distance = 2 |
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if (zoom <= 4) { |
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distance = 100 |
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}else if (zoom <= 6) { |
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distance = 80 |
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} else if (zoom <= 10) { |
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distance = 30 |
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} else if (zoom <= 16) { |
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distance = 30 |
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}else if (zoom <= 17) { |
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distance = 10 |
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} |
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console.log('zoom',zoom,'distance',distance) |
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clusterSource?.setDistance(distance) |
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},200) |
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/** |
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* 获取视图内聚合图层中没有聚合的单个点 |
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* @returns {Array} 单个点要素数组 |
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*/ |
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getSinglePointsInView = debounce(() => { |
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const map = this.map |
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const clusterLayer = this.markerLayer |
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if (!clusterLayer || !map) return [] |
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const singlePoints = [] |
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// 获取聚合图层的源
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const clusterSource = clusterLayer.getSource() |
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// 获取当前视图范围
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const view = map.getView() |
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const currentExtent = view.calculateExtent(map.getSize()) |
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// 获取视图范围内的所有聚合要素
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const featuresInView = clusterSource.getFeaturesInExtent(currentExtent) |
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// console.log('featuresInView',featuresInView)
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featuresInView.forEach((clusterFeature) => { |
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// 关键：获取聚合要素中包含的所有原始要素
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const originalFeatures = clusterFeature.get('features') |
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// console.log('originalFeatures',originalFeatures);
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if (originalFeatures && originalFeatures.length === 1) { |
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singlePoints.push(originalFeatures[0].get('markerData')) |
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} else if (!originalFeatures) { |
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singlePoints.push(clusterFeature.get('markerData')) |
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} |
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}) |
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this.animationService?.addAll(singlePoints || []) |
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return singlePoints |
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},300) |
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/** |
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* 从props创建markerLayer（内部方法） |
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* |
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*/ |
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// : VectorLayer<VectorSource | Cluster>
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private createMarkerLayerFromProps(props: MapProps) { |
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createMarkerLayerFromProps(props: MapProps) { |
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// console.log('createMarkerLayerFromProps')
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this.animationService?.clear() |
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this.updateData(props) |
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// this.updateData(props)
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// 检查是否应该强制使用单个marker模式
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const shouldForceSingleMark = () => { |
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if (!props.forceSingleMark || !this.map) return false |
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const currentZoom = this.map.getView().getZoom() |
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// console.log('currentZoom', currentZoom)
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// return currentZoom && currentZoom >= props.forceSingleMark
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return currentZoom && currentZoom >= ANIMATION_CONFIG.clusterThreshold |
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} |
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@ -89,16 +153,20 @@ export class MarkerService { |
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if (props.enableCluster && !shouldForceSingleMark()) { |
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if (this.currentLayerMode === 'cluster') return |
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this.currentLayerMode = 'cluster' |
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// this.animationService?.clear()
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console.log('聚合图层') |
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const clusterSource = new Cluster({ |
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source: this.vectorSource, |
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distance: Math.max(props.clusterDistance || 10, 10) |
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distance: 20 // 单位是像素
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}) |
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newLayer = new VectorLayer({ |
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source: clusterSource, |
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zIndex: 1, |
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style: (feature) => { |
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// 视图变化新视口内所有要素的样式重计算 (如平移、缩放),所以不能调用this.animationService?.add
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const features = feature.get('features') |
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// 确保features存在且不为空
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@ -111,8 +179,6 @@ export class MarkerService { |
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// 单个marker
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const markerData: MarkerData = features[0].get('markerData') |
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this.animationService?.add(markerData) |
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return markerData ? createMarkerStyle(markerData.statusColor || '') : new Style() |
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} else { |
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// 聚合marker
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@ -124,14 +190,10 @@ export class MarkerService { |
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} |
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}) |
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} else { |
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// markers可能变化，必须更新
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this.animationService?.addAll(props.markers || []) |
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if (this.currentLayerMode === 'single') return |
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this.currentLayerMode = 'single' |
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// console.log('基础marker')
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console.log('基础marker图层') |
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newLayer = new VectorLayer({ |
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source: this.vectorSource, |
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@ -169,6 +231,7 @@ export class MarkerService { |
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this.markerLayer = null |
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this.animationService?.destroy() |
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// this.currentProps = null
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this.createMarkerLayer.cancel() |
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this.map = null |
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} |
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} |
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xh