From b294ab1d7ccbfcfe1479cc18f461a85be4d8d845 Mon Sep 17 00:00:00 2001
From: Henry Weller <http://openfoam.org>
Date: Fri, 1 Mar 2019 13:47:22 +0000
Subject: [PATCH] rigidBodyModel: Added movingBodyNames() member function

which returns the list of names of the moving bodies in the model.
---
 .../rigidBodyModel/rigidBodyModel.C           | 19 +++++++++++++++++++
 .../rigidBodyModel/rigidBodyModel.H           |  5 ++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.C b/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.C
index c29efdb7ea..07a1975082 100644
--- a/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.C
+++ b/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.C
@@ -384,6 +384,25 @@ Foam::spatialTransform Foam::RBD::rigidBodyModel::X0
 }
 
 
+Foam::wordList Foam::RBD::rigidBodyModel::movingBodyNames() const
+{
+    wordList names(nBodies());
+
+    label j = 0;
+    for (label i=1; i<nBodies(); i++)
+    {
+        if (!isType<jointBody>(bodies_[i]))
+        {
+            names[j++] = bodies_[i].name();
+        }
+    }
+
+    names.setSize(j);
+
+    return names;
+}
+
+
 void Foam::RBD::rigidBodyModel::write(Ostream& os) const
 {
     os  << indent << "bodies" << nl
diff --git a/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.H b/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.H
index 7a749d9f41..ac36c7e765 100644
--- a/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.H
+++ b/src/rigidBodyDynamics/rigidBodyModel/rigidBodyModel.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2016-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -252,6 +252,9 @@ public:
         //- Return the name of body with the given ID
         inline const word& name(const label bodyID) const;
 
+        //- Return the names of the moving bodies
+        wordList movingBodyNames() const;
+
         //- Return the inertia of body i
         inline const rigidBodyInertia& I(const label i) const;