><td class="entry"><a class="el" href="class_s_p_h_1_1_external_force.html">SPH::ExternalForce</a></td><td class="entry"><span class="mlabel">inline</span><span class="mlabel">virtual</span></td></tr>
  <tr bgcolor="#f0f0f0"><td class="entry"><b>~Gravity</b>() (defined in <a class="el" href="class_s_p_h_1_1_gravity.html">SPH::Gravity</a>)</td><td class="entry"><a class="el" href="class_s_p_h_1_1_gravity.html">SPH::Gravity</a></td><td class="entry"><span class="mlabel">inline</span><span class="mlabel">virtu