MapboxBufferPolygon
多边形缓冲区,向外扩展或负值向内收缩指定米宽。
简介
MapboxBufferPolygon 把面要素向外扩展 width 米(负值向内收缩),polygon 接受面要素、几何或外环坐标数组。
用法
拖动滑块在扩展与收缩间切换:
宽度 800m
<script setup lang="ts">
const polygon: [number, number][] = [
[116.38, 39.94],
[116.44, 39.94],
[116.44, 39.89],
[116.38, 39.89],
[116.38, 39.94]
]
const width = ref(800)
</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, 39.915], zoom: 11 }"
>
<div
class="absolute left-3 top-3 z-10 flex items-center gap-2 rounded-(--ui-radius) border border-default bg-default/80 px-3 py-1.5 backdrop-blur"
>
<span class="text-sm text-muted">宽度 {{ width }}m</span>
<USlider v-model="width" :min="-400" :max="1500" :step="100" class="w-32" />
</div>
<!-- 正值向外扩展、负值向内收缩 -->
<MapboxBufferPolygon :polygon="polygon" :width="width" color="#8b5cf6" />
</MapboxMap>
</div>
</template>
API
Props
| Prop | Default | Type |
|---|---|---|
polygon | GeoJSON.Polygon | GeoJSON.Feature<GeoJSON.Polygon, { [name: string]: any; }> | [number, number][]面要素、几何或外环坐标数组 | |
width | number缓冲宽度(米),负值向内收缩 | |
layerId | string图层 id 前缀;省略时自动生成 | |
color | string主色(快捷样式) | |
fillPaint | Record<string, unknown>整体覆盖填充 paint | |
linePaint | Record<string, unknown>整体覆盖描边 paint | |
beforeId | string插入到该图层之前 |
Changelog
No recent changes