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for leaflet 百度地图的一个问题 #58

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brahmachen opened this issue Nov 18, 2019 · 1 comment
Open

for leaflet 百度地图的一个问题 #58

brahmachen opened this issue Nov 18, 2019 · 1 comment
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@brahmachen
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Request a feature or report a bug? [这是一个需求还是一个缺陷]

缺陷

One-line summary [问题简述]

leaflet 里面的L.supermap.baiduTileLayer在加载百度地图时，若开启连续模式，就是 noWrap设置为false的话，并不是连续的，两个世界地图之间隔了一点距离

Version [产品及版本]

  • iClient product (for leaflet,for openlayers,for mapboxgl,classic)[iClient 产品]:for leaflet

Actual Behavior [当前现象]

两个世界瓦片之间有距离
image

Expected Behavior [期望现象]

没有距离

Example of reproducing the issue [重现现象的例子]

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title data-i18n="resources.title_baiduLayer"></title>
<script type="text/javascript" src="../js/include-web.js"></script>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%;position: absolute;top: 0;">
<div id="map" style="margin:0 auto;width: 100%;height: 100%"></div>
<script type="text/javascript" src="../../dist/leaflet/include-leaflet.js"></script>
<script type="text/javascript">
        var map = L.map('map', {
            crs: L.CRS.Baidu,
            center: [0, 0],
            zoom: 3
        });
        L.supermap.baiduTileLayer("", {
            noWrap: false,
        }).addTo(map);
    </script>
</body>
</html>

What is motivation or use case for changing the behavior? [需求的场景和目的是什么？]

需要展示全球地图，不美观
@songyumeng
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谢谢您的issue。
百度地图的瓦片金字塔组织方式与谷歌地图等不同，比如瓦片起算点为0,0而非左上角，分辨率和级别的计算关系是Math.pow(2, (18 - zoom))。
这些导致在zoom为3,4时，可能会出现世界边缘瓦片填充不满的情况，比如
http://online2.map.bdimg.com/onlinelabel/?qt=tile&x=2&y=0&z=3&styles=ph&udt=20150815&scaler=1
image
在返回瓦片自身就填充不满的情况下，暂时无法实现无缝拼接。

@snyk-bot snyk-bot mentioned this issue Sep 28, 2021
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@snyk-bot snyk-bot mentioned this issue Sep 15, 2022
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@ahnan ahnan mentioned this issue Dec 23, 2022
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@ahnan ahnan mentioned this issue Oct 15, 2023
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@brahmachen @songyumeng