Allolib C/C++ Libraries {#mainpage}

Library for interactive multimedia application development

Developed by:

AlloSphere Research Group

allolib is a fork of AlloSystem, maintained in separate repository.

University of California, Santa Barbara

Find us at #allolib on libera.chat. Try the libera.chat web interface interface if you don't have an IRC client

Documentation

The API documentation can be found at: https://allosphere-research-group.github.io/allolib-doc/

Installing Allolib

Dependencies

Allolib depends on Cmake version 3.8 (as the build tool), OpenGL and glew. See platform specific instructions below.

To clone the media required for some examples, you will need git-lfs. Installation of git-lfs is described below, but it is important that you install git-lfs before cloning this repo.

Windows

There are two paths for Windows installation. One through Visual Studio and one through the Chocolatey package manager.

For installation through Visual Studio:

1. Install Visual Studio 2017 or 2019 Community Edition from https://visualstudio.microsoft.com/downloads/

2. During installation options:

   a. Install "Desktop development with C++" workload

   b. Install Individual components: C++/CLI support (make sure the version matches your compiler version), Git for Windows, Visual C++ Tools for Cmake

For installation through Chocolatey (not currently recommended, but let us know if it works):

• Install Chocolatey: Aim your browser at https://chocolatey.org/install. Follow the directions there to install Chocolatey. Wait for this to finish before moving on.
• Use the choco command to install a C++ compiler. Open cmd.exe (Command Prompt) as administrator and run this command: choco install -y visualstudio2017buildtools visualstudio2017-workload-vctools
• Use the choco command to install some software. Open cmd.exe (Command Prompt) as administrator and run this command: choco install -y git git-lfs cmake graphviz doxygen atom vscode
• Install libsndfile: Aim your browser at http://www.mega-nerd.com/libsndfile/#Download. Download and install the 64-bit version: libsndfile-1.0.xx-w64-setup.exe.

macOS

• Install Xcode: Open the App Store app. Search for "xcode". Install the first result. Wait for this to finish before moving on.
• Install Homebrew: Open the Terminal app. Aim your browser at https://brew.sh. Copy and paste the text of the install command into the Terminal app.

• Use the brew command to install some software. In the Terminal app, run this command:

  brew install git git-lfs cmake libsndfile

Ubuntu/Debian

sudo apt install build-essential git git-lfs cmake libsndfile1-dev libassimp-dev libasound-dev libxrandr-dev libopengl-dev libxinerama-dev libxcursor-dev libxi-dev

allolib requires gcc >= 7. If you need to build on older versions, you can use a ppa to get gcc:

sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
sudo apt update
sudo -E apt-get install gcc-8 g++-8

Building library and running examples

On a bash shell on Windows, Linux and OS X do:

git clone https://github.com/AlloSphere-Research-Group/allolib
cd allolib
git submodule update --recursive --init
mkdir build
cd build
cmake .. -DALLOLIB_BUILD_EXAMPLES=1
cmake --build .

The library will be built in build/lib.

Building aplications with allolib

There are two options provided to build allolib applications. The first is allolib_playground that is great for prototyping single file applications and for exploring the examples. For more complex projects with multiple source files and dependencies, use allotemplate

Extensions

Allolib provides an extension mechanism for libraries that have large or platform dependent dependencies. The stable set of extensions can be found in the al_ext repo. The allotemplate repo linked above shows how to integrate them. al_ext is a separate repo that depends on the allolib library and provides cmake facilities for easy integration with it.