vectortiles:Mapbox矢量图块的本机Haskell编解码器-源码

上传者: 42126399 | 上传时间: 2021-02-03 01:06:54 | 文件大小: 77KB | 文件类型: ZIP
VectorTiles 什么是VectorTiles? 由发明,是有限大小的图块和矢量几何形状的组合。 Mapbox维护VectorTile编解码器的官方实现规范。 VectorTiles优于栅格图块,因为: 它们通常较小以存储 它们可以实时轻松地进行转换(旋转等) 它们允许在“ Slippy Maps”中连续(而不是逐步)缩放。 原始VectorTile数据以protobuf格式存储。 任何实施编解码器都必须根据对数据进行解码和编码。 这是什么图书馆? vectortiles是VectorTile规范2.1版的最小可行实现。 它旨在为实现其他编解码器提供坚实的参考。 vectortiles公开了原始protobuf数据与更高级的VectorTile类型之间的转换函数的小型API, VectorTile类型更有助于进一步处理。 vectortiles还公开了典型的GIS Geometry类型的相当简单(但很明智)的实现: 点 LineString 多边形 为了便于编码和解码,每个Geometry类型及其对应的Multi (即Multipoint )都被视为同一事物,即那

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