---
title: "栅格瓦片-多个Plolygon掩模-并集取反"
language: "zh"
canonical: "https://l7.antv.antgroup.com/zh/examples/mask/basic/multi-mask-or-not/"
---

# 栅格瓦片-多个Plolygon掩模-并集取反

[运行示例](https://l7.antv.antgroup.com/zh/examples/mask/basic/multi-mask-or-not/)

[资料索引](/llms.txt)

页面需要一个 `id="container"` 的 DOM 元素。以下为原始示例源码。

## 源码

```ts
// @ts-ignore
import { PolygonLayer, RasterLayer, Scene } from '@antv/l7';
// @ts-ignore
import { Map } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',

  map: new Map({
    center: [110, 30],
    // zoom: 12,
    zoom: 3,
  }),
});
const maskData = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        coordinates: [
          [
            [99.70402975806178, 36.598520593127276],
            [99.70402975806178, 23.990050715201292],
            [114.1889649431626, 23.990050715201292],
            [114.1889649431626, 36.598520593127276],
            [99.70402975806178, 36.598520593127276],
          ],
        ],
        type: 'Polygon',
      },
    },
  ],
};
const maskData2 = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        coordinates: [
          [
            [109.50019979654019, 32.46162165361247],
            [125.99460575876572, 29.37353862575138],
            [127.50170884160855, 39.24004564990585],
            [114.69133263744305, 41.22139040282963],
            [109.50019979654019, 32.46162165361247],
          ],
        ],
        type: 'Polygon',
      },
    },
  ],
};
const maskData3 = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        coordinates: [
          [
            [111.67712647175739, 27.533314060876805],
            [131.7718342429976, 27.533314060876805],
            [131.7718342429976, 34.55577879114256],
            [111.67712647175739, 34.55577879114256],
            [111.67712647175739, 27.533314060876805],
          ],
        ],
        type: 'Polygon',
      },
    },
  ],
};

const maskLayer1 = new PolygonLayer({
  visible: false,
  maskOperation: 'or',
  zIndex: 4,
})
  .source(maskData)
  .shape('fill')
  .color('#f00')
  .style({ opacity: 0.4 });
const maskLayer2 = new PolygonLayer({ visible: false, maskOperation: 'or', zIndex: 4 })
  .source(maskData2)
  .shape('fill')
  .color('#f00')
  .style({ opacity: 0.4 });
const maskLayer3 = new PolygonLayer({ visible: false, maskOperation: 'or', zIndex: 4 })
  .source(maskData3)
  .shape('fill')
  .color('#f00')
  .style({ opacity: 0.4 });

const layer = new RasterLayer({
  zIndex: 5,
  maskLayers: [maskLayer1, maskLayer2, maskLayer3],
  enableMask: true,
  maskInside: false, // 并集取反 notALL
})
  .source(
    'https://tiles{1-3}.geovisearth.com/base/v1/img/{z}/{x}/{y}?format=webp&tmsIds=w&token=b2a0cfc132cd60b61391b9dd63c15711eadb9b38a9943e3f98160d5710aef788',
    {
      parser: {
        type: 'rasterTile',
        tileSize: 256,
      },
    },
  )
  .style({
    opacity: 1,
  });

scene.on('loaded', () => {
  scene.addLayer(maskLayer1);
  scene.addLayer(maskLayer2);
  scene.addLayer(maskLayer3);
  scene.addLayer(layer);
});
```

## 运行环境

运行示例前，先在含有 #container 的页面中等待以下初始化完成。相关文件附于文末。

```js
await (await import("/src/demo/setup.ts")).default({ container: document.getElementById('container'), path: "/examples/mask/basic/demo/multi-mask-or-not.ts" });
```


## src/demo/setup.ts

```ts
import type { DemoSetupContext } from '@antv/astro-theme-antv';
import * as District from 'district-data';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';

export default async function setup({ container, path }: DemoSetupContext) {
  // Tool pages provide their own React layout and SDK imports.
  if (!path.startsWith('/examples/')) return;
  // Retain only the original globals still used by gallery examples.
  Object.assign(window, { District, GLTFLoader });
  const map = document.createElement('div');
  map.id = 'map';
  container.append(map);
  await import('./map.css');
  // Match the original gallery's shared AMap environment, including raw AMap demos.
  await import('./amap');
}
```

## src/demo/map.css

```css
#map {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 320px;
}

.labelclass {
  position: absolute;
  display: inline;
  cursor: pointer;
  background: rgb(255, 228, 120);
  border: solid 2px #fff;
  padding: 4px;
  white-space: nowrap;
  font:
    bold 12px/18px arial,
    sans-serif;
  color: #fff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  line-height: 30px;
  /* opacity: 0.7; */
  text-align: center;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
```

## src/demo/amap.ts

```ts
import AMapLoader from '@amap/amap-jsapi-loader';

// Preserve the site's development and production SDK registrations.
const credentials = import.meta.env.DEV
  ? { key: '6f025e700cbacbb0bb866712d20bb35c', securityJsCode: '290ddc4b0d33be7bc9b354bc6a4ca614' }
  : { key: 'f59bcf249433f8b05caaee19f349b3d7', securityJsCode: '2653011adeb04230b3a26cc9a780a800' };
window._AMapSecurityConfig = { securityJsCode: credentials.securityJsCode };
await AMapLoader.load({ key: credentials.key, version: '2.0', plugins: ['Map3D'] });
```