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fix: 新版高德大于 21 级别抖动问题 #2433

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merged 1 commit into from
Apr 28, 2024
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fix: 新版高德大于 21 级别抖动问题 #2433

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20 changes: 18 additions & 2 deletions packages/maps/src/amap-next/map.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -118,13 +118,14 @@ export default class BMapService extends BaseMap<AMap.Map> {
};

private getViewState() {
const { center, zoom } = getMapHighPrecisionState(this.map);
const option = {
center: [this.map.getCenter().getLng(), this.map.getCenter().getLat()] as [number, number],
center: center,
viewportWidth: this.map.getContainer()!.clientWidth,
viewportHeight: this.map.getContainer()!.clientHeight,
bearing: -this.map.getRotation(),
pitch: this.map.getPitch(),
zoom: this.map.getZoom() - ZOOM_OFFSET,
zoom: zoom - ZOOM_OFFSET,
};

return option;
Expand Down Expand Up @@ -437,3 +438,18 @@ export default class BMapService extends BaseMap<AMap.Map> {
this.map.destroy();
}
}

/**
* 访问高精度的地图状态（临时解决方案）
* - 解决 map.getCenter() 方法只返回小数点五位有效数据
* - 解决 map.getZoom() 方法只返回小数点两位有效数据
*/
function getMapHighPrecisionState(map: AMap.Map) {
// @ts-expect-error 访问未暴露的内部属性
const viewStatus = map._view.getOptions();

const center: [number, number] = viewStatus.center;
const zoom: number = viewStatus.zoom;

return { center, zoom };
}
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