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Added missing zlib build requirement

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Martin Tůma 2018-11-01 23:29:53 +01:00 committed by GitHub
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@ -16,7 +16,7 @@ OpenMapTiles is part of the plugin.
## Usage
Due to a major design flaw in the Mapbox vector tiles specification - the zoom
is not part of the PBF data - the plugin can not be used "as is", but passing
the zoom level is necessary. This is done by exploiting the optional format
the zoom level is necessary. This is done by exploiting the optional *format*
parameter of the QImage constructor or the QImage::fromData() or
QPixmap::loadFromData() functions. The zoom number is passed as ASCII string
to the functions:
@ -29,6 +29,7 @@ pm.loadFromData(tileData, QString::number(zoom).toLatin1());
Build requirements:
* QT 5.x
* Google Protocol Buffers (protobuf-lite)
* Zlib
Build steps:
```shell