line

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用 MapboxLayer 的 line 类型渲染线图层,经 paint 控制线宽、颜色与端点样式。

简介

MapboxLayertype="line" 渲染线图层,line-width / line-color 控制描边,line-cap / line-join 控制端点与拐角样式。

line 由通用组件 MapboxLayer 承载,完整 Props 与事件见其文档。

用法

一条折线,圆角端点:

<script setup lang="ts">
import type { FeatureCollection } from 'geojson'

const data: FeatureCollection = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        type: 'LineString',
        coordinates: [
          [116.32, 39.88],
          [116.38, 39.92],
          [116.44, 39.9],
          [116.5, 39.95]
        ]
      }
    }
  ]
}
</script>

<template>
  <div class="h-115 w-full overflow-hidden rounded-(--ui-radius) border border-default">
    <MapboxMap
      :options="{ style: 'mapbox://styles/mapbox/light-v11', center: [116.41, 39.91], zoom: 11 }"
    >
      <MapboxLayer
        layer-id="route"
        type="line"
        :source="{ type: 'geojson', data }"
        :layout="{ 'line-cap': 'round', 'line-join': 'round' }"
        :paint="{ 'line-color': '#f43f5e', 'line-width': 4 }"
      />
    </MapboxMap>
  </div>
</template>

API

Props

Prop Default Type
layerIdstring

图层 id,全局唯一

type"symbol" | "fill" | "line" | "circle" | "heatmap" | "fill-extrusion" | "building" | "raster" | "raster-particle" | "hillshade" | "model" | "background" | "sky" | "slot" | "clip"

图层类型,决定渲染方式与可用的 paint / layout 属性

sourcestring | mapboxgl.VectorSourceSpecification | mapboxgl.RasterSourceSpecification | mapboxgl.RasterDEMSourceSpecification | mapboxgl.RasterArraySourceSpecification | mapboxgl.GeoJSONSourceSpecification | mapboxgl.VideoSourceSpecification | mapboxgl.ImageSourceSpecification | mapboxgl.ModelSourceSpecification

source id 字符串引用,或内联 source 对象(自动创建匿名源并随图层卸载)

sourceLayerstring

矢量瓦片源内的子图层名(source-layer),消费矢量源时必填

paintPropBag

绘制样式属性,响应式变更经 setPaintProperty 增量下发

layoutPropBag

布局属性,响应式变更经 setLayoutProperty 增量下发

filtermapboxgl.ExpressionSpecification | ["has", string] | ["!has", string] | ["==", string, string | number | boolean] | ["!=", string, string | number | boolean] | [">", string, string | number | boolean] | [">=", string, string | number | boolean] | ["<", string, string | number | boolean] | ["<=", string, string | number | boolean] | (string | mapboxgl.FilterSpecification)[]

过滤表达式,仅渲染匹配的要素

minzoom0number

最小缩放级别,低于此级别不渲染

maxzoom24number

最大缩放级别,高于此级别不渲染

beforeIdstring

插入到该 id 图层之前;省略则追加到图层栈顶部

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