如何告诉KmlLayer关于自定义地图投影？

问题描述

我有自定义投影（对于maps.yandex.ru图块）和默认投影（Google和OSM图块）的地图。当我添加KmlLayer来映射默认投影时，它似乎可以：

但将地图切换到maps.yandex图层（在自定义投影中）...

和kml-objects错位。

我如何判断关于自定义投影的KmlLayer？

解决方案

根据我的理解，任何给定的对象具有纬度/经度（a，b）在自定义投影下，墨卡托投影将具有与（a，b）不同的值。例如，如果您的自定义投影是极性的，则该对象将具有距固定点的距离和来自固定方向的角度，并且根本没有经度/纬度。因此，告诉您的KMLLayer关于自定义投影的方法是转换每个对象的坐标并重写KML。

I have a map with a custom projection (for maps.yandex.ru tiles) and default projection (Google and OSM tiles). When I add KmlLayer to map in the default projection it seems ok:

But switching map to maps.yandex layer (in custom projection)...

and kml-objects are misplaced.

How do I tell KmlLayer about custom projection?

解决方案

The way I understand it, any given object that has lat/lon (a,b) under a Mercator projection will have a different value than (a,b) under a custom projection. For example, if your custom projection was polar, the object would have distance from a fixed point and an angle from a fixed direction, and no lat/lon at all. So, the way to tell your KMLLayer about the custom projection would be to convert the coordinates of each object and rewrite the KML.

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