.. _Chap:ExamplePackedSpheres:

PackedSpheres
==============

Creates a scene of :math:`N^3` analytic spheres and combines them with two kinds of union: a
standard union that scans every object, and a BVH-accelerated union
(see :ref:`Chap:BVH`).  Demonstrates the algorithmic-complexity benefit of the BVH for
closest-object queries as the object count grows.

The source for this example is at :file:`Examples/PackedSpheres/main.cpp`. See
:ref:`Chap:Building` for how to compile it with CMake, GNU Make, or a direct compiler
invocation.

.. code-block:: bash

   cd Examples/PackedSpheres
   ./PackedSpheres.ex