Quadtrees iterating on pairs of neighbours

Implementation of a smart version of quadtrees specialised in tracking distance between moving objects.

Python interface

Installation

Recommended installation procedure :

• virtualenv (optional, but a good idea nonetheless):

 virtualenv quadtree_test
 source quadtree_test/bin/activate

• installation:

pip install smartquadtree

If no version is available, you can compile your own:

pip install git+git://github.com/xoolive/quadtree

Usage

import smartquadtree

You can refer to the tutorial.iypnb file for an introduction to the possibilities of the package. If you are not familiar with the iPython notebook, you can also access to a static version on PyPI

C++ library

Installation

You can use CMake to build the C++ library.

The minimal installation is obtained by setting the BUILD_TESTS option to OFF. If you keep the BUILD_TESTS option ON, you will need to have OpenGL and GLUT installed. freeglut is a valid implementation for the current example.

If you try the library in a virtual machine, do set the RUN_IN_VM option to ON.

You can try the application by launching make run. The simulation is made of elements moving in a map. A red line is drawn between elements closer than a preset threshold. At the beginning of the simulation, all elements inside a predefined shape are painted in green.

You can then:

• zoom in/out with +/-;
• move left/down/up/right with the standard vim movement keys: h, j, k, l;
• press g to repaint elements inside the original shape in green.

Usage

A good way to learn how to use the library would be to have a look at file tests/test_simu.cpp.

For a more basic introduction, it is recommended to start with the Python interface, its documentation, and the tutorial.ipynb file that you can also view here.