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Rapid prototyping and experimentation framework for robotics and cognitive systems based synchronous data flow and visual programming.

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# CS::APEX (Algorithm Prototyper and EXperimentor for Cognitive Systems)

CS::APEX is a framework based on synchronous dataflow and event-based message passing that
aims to speed up prototyping of new robotic algorithms using visual programming aspects.

Example workflow: (click to show the video)

[![Graph Construction Video](http://img.youtube.com/vi/sNkHnQhNXuU/0.jpg)](http://www.youtube.com/watch?v=sNkHnQhNXuU)

## Dataflow Graph and Core Features

Calculations are represented by a nodes in a directed graph with data flowing on
the directed edges.This execution graph is manipulated using a simple graphical user
interface that allows spawning and deleting nodes, adding and removing edges and
visualizating data in the stream. To speed up the prototyping process,
other features like undo/redo mechanisms and profiling are implemented as well.
Finally there exists an easy to use parameter system that generates UI controls
for each block and allows parameter tuning and optimization.

## Functionality via Plug-ins

The framework itself does not provide any predefined computation nodes and does
not depend on specific message definitions or node types.
These details are instead implemented in plug-in libraries that extend
the functionality of the whole system.

## Application to Robotics

The framework is targeted toward use in robotics and is fully compatible with
[ROS](http://wiki.ros.org/). Configurations generated using the GUI can
directly be deployed on any ROS-based robotic system.

## Tutorials and more Information

For more information, please refer to the Wiki at
    [(https://github.com/cogsys-tuebingen/csapex/wiki](https://github.com/cogsys-tuebingen/csapex/wiki)

the official website at
    [(http://www.ra.cs.uni-tuebingen.de/forschung/apex](http://www.ra.cs.uni-tuebingen.de/forschung/apex)

or contact the maintainers via email.

## Dependencies

We rely on the [catkin](http://wiki.ros.org/catkin) build system
developed in the [ROS](http://wiki.ros.org/) ecosystem. The core framework
is independent of ROS, however.

Required for a build are:

- Linux system (tested with Ubuntu)
- CMake >= 3.8.2
- C++17 compatible compiler (g++, clang++)
- Qt5 (on Ubuntu: qt5-default libqt5svg5-dev)
- libraries:
  - boost (program_options, filesystem, system)
  - [classloader](https://github.com/ros/class_loader)
  - TinyXML (on Ubuntu: libtinyxml-dev)
  - yaml-cpp (on Ubuntu: libyaml-cpp-dev)

These dependencies can be installed via rosdep (see below.)

## Basic Installation

To get the cs::APEX framework and a set of core plugins, perform the following:

cd ~
    mkdir -p ws/csapex/src
    cd ws/csapex/src

git clone https://github.com/cogsys-tuebingen/csapex.git

cd csapex/plugins
    git clone https://github.com/cogsys-tuebingen/csapex_core_plugins.git

cd ../..
    mkdir libs
    cd libs

git clone https://github.com/cogsys-tuebingen/cslibs_vision.git
    git clone https://github.com/cogsys-tuebingen/cslibs_laser_processing.git
    git clone https://github.com/cogsys-tuebingen/cslibs_arff.git
    git clone https://github.com/cogsys-tuebingen/cslibs_indexed_storage.git

cd ../..
    rosdep install -y -r -i --from-paths src
    catkin_make

## Creating Documenation

To create the documentation, run

doxygen doc/Doxyfile

This will generate the documentation at

doc/html/index.html

## Contributions

All contributions are welcome, please refer to the CONTRIBUTING.md file.

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