---
title: "MaplibreWindowBuilding"
description: "Window-lit 3D buildings using a procedurally generated window grid as fill-extrusion-pattern."
canonical_url: "https://maplibre.mhaibaraai.cn/en/docs/effects/window-building"
---
# MaplibreWindowBuilding

> Window-lit 3D buildings using a procedurally generated window grid as fill-extrusion-pattern.

## Introduction

`MaplibreWindowBuilding` renders 3D buildings from the building data given by `source` / `sourceLayer`, applying a procedurally generated window-grid texture as `fill-extrusion-pattern`; `rows` / `cols` / `litColor` / `darkColor` / `litRatio` / `seed` control the window appearance. Requires a tilted view and zoom ≥ `minzoom` (default 15).

## Usage

Light up random window panes in a night-style map:

```vue [WindowBuildingExample.vue]
<template>
  <div class="h-115 w-full overflow-hidden rounded-(--ui-radius) border border-default">
    <MaplibreMap
      :options="{ style: 'https://tiles.openfreemap.org/styles/dark', center: [116.461, 39.909], zoom: 15.5, pitch: 60, bearing: -20 }"
    >
      <MaplibreWindowBuilding
        source="openmaptiles"
        source-layer="building"
        :rows="10"
        :cols="6"
        lit-color="#fde68a"
        dark-color="#1f2937"
        :lit-ratio="0.45"
      />
    </MaplibreMap>
  </div>
</template>
```

## API

### Props

```ts
/**
 * Props for the MaplibreWindowBuilding component
 */
interface MaplibreWindowBuildingProps {
  /**
   * 数据源 id（需已由 MaplibreSource 或样式声明）
   */
  source: string;
  /**
   * 矢量瓦片中的图层名（如 OpenMapTiles 的 'building'）；GeoJSON 源省略
   */
  sourceLayer?: string | undefined;
  /**
   * 建筑高度属性名
   * @default 'render_height'
   */
  heightProperty?: string | undefined;
  /**
   * 建筑底面高度属性名
   * @default 'render_min_height'
   */
  baseProperty?: string | undefined;
  /**
   * 图层 id；省略时自动生成，变更需配合 `:key` 重建
   */
  layerId?: string | undefined;
  /**
   * 窗户行数
   * @default 8
   */
  rows?: number | undefined;
  /**
   * 窗户列数
   * @default 6
   */
  cols?: number | undefined;
  /**
   * 亮窗颜色
   * @default '#fde68a'
   */
  litColor?: string | undefined;
  /**
   * 暗窗/墙体颜色
   * @default '#1f2937'
   */
  darkColor?: string | undefined;
  /**
   * 亮窗比例
   * @default 0.45
   */
  litRatio?: number | undefined;
  /**
   * 随机种子
   * @default 1
   */
  seed?: number | undefined;
  /**
   * 整体透明度
   * @default 1
   */
  opacity?: number | undefined;
  /**
   * 最小缩放级别
   * @default 15
   */
  minzoom?: number | undefined;
  /**
   * 插入到该图层之前
   */
  beforeId?: string | undefined;
}
```

## Changelog

See commit history for [src/runtime/components/effects/WindowBuilding.vue](https://github.com/mhaibaraai/movk-maplibre/commits/main/src/runtime/components/effects/WindowBuilding.vue).


## Sitemap

See the full [sitemap](https://maplibre.mhaibaraai.cn/sitemap.md) for all pages.