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[](https://magnum.travis-ci.com/mapbox/mapbox-gl-native)
An OpenGL renderer for [Mapbox vector tiles](https://www.mapbox.com/blog/vector-tiles),
implemented in C++11, currently targeting iOS, OS X, and Ubuntu Linux.
# Depends
- Modern C++ compiler that supports `-std=c++11`
- Boost headers
- `libpng`
- `libuv`
- `glfw3`
- `libcurl` (depends on OpenSSL; Linux only)
- `libboost_regex` (Linux only)
- Homebrew (for build on OS X)
- Python (for build only)
- Node.js (for build only)
# Build instructions
We use [mapnik-packaging](https://github.com/mapnik/mapnik-packaging) to build static libraries of
dependencies.
First off: if you hit problems during development try:
make clean
This will clear cached build data and update to the latest versions of dependencies.
## OS X
First run:
make setup
This downloads all required dependencies, builds them and creates universal libraries that can be used on both OS X and iOS.
To create projects, you can run:
- `make xproj`: Creates an Xcode project with OS X-specific handlers for HTTP downloads and
settings storage. It uses GLFW for window handling.
- `make lproj`: Creates an Xcode project with platform-independent handlers for downloads
and settings storage. This is what is also being built on Linux.
- `make linux`: Builds the Linux GLFW application with `make`.
## iOS
iOS makes use of a Cocoa-specific API called [mapbox-gl-cocoa](https://github.com/mapbox/mapbox-gl-cocoa),
which is included as a submodule and provides a `UIView` interface to the map view and some bundle resources.
First, pull down the submodule(s):
git submodule init
git submodule update
Then run:
make setup
This downloads all required dependencies, builds them and creates universal libraries that can be used on both OS X and iOS.
Lastly, `make iproj` to create and open an Xcode project with an iOS-specific view controller housing.
Target devices: iPhone 4 and above (4S, 5, 5c, 5s) and iPad 2 and above (3, 4, mini and/or retina).
## Ubuntu
Ensure you have git and other build essentials:
sudo apt-get update
sudo apt-get install git build-essential zlib1g-dev automake libtool xutils-dev make cmake pkg-config nodejs-legacy
Install a `-std=c++11` capable compiler
sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install gcc-4.8 g++-4.8
Install glfw3 dependencies:
sudo apt-get install libxi-dev libglu1-mesa-dev x11proto-randr-dev x11proto-xext-dev libxrandr-dev x11proto-xf86vidmode-dev libxxf86vm-dev libxcursor-dev
Then run:
make setup
This downloads all required dependencies, builds them and creates universal libraries that can be used on both OS X and iOS.
You can then proceed to build the library like:
make linux
# Style
We're currently embedding the stylesheet JSON in the binary. To create the C++
file and the associated header, run
```
node bin/build-style.js
```
This is automatically taken care of as a build phase.
# Usage
## Desktop
- Press `X` to reset the transform
- Press `N` to reset north
- Press `R` to toggle styles
- Press `Tab` to toggle debug information
- Press `Esc` to quit
## Mobile
- Pan to move
- Pinch to zoom
- Use two fingers to rotate
- Double-tap to zoom in one level
- Two-finger single-tap to zoom out one level
- Single-tap to toggle the command palette visibility for resetting north & the transform, toggling debug, toggling styles, and locating the user
- Double-tap, long-pressing the second, then pan up and down to "quick zoom" (iPhone only, meant for one-handed use)
# Other notes
Under early development, this project was called LLMR (Low-Level Map Renderer), in case you see any lingering references to it.
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