diff --git a/sources/reactphysics3d/constraint/EdgeEdgeContact.cpp b/sources/reactphysics3d/constraint/EdgeEdgeContact.cpp
deleted file mode 100644
index 8fdbb721..00000000
--- a/sources/reactphysics3d/constraint/EdgeEdgeContact.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "EdgeEdgeContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-EdgeEdgeContact::EdgeEdgeContact(Body* const body1, Body* const body2, const Vector3D normalVector, const Time& time, const Segment3D& contactSegment)
-                :Contact(body1, body2, normalVector, time), contactSegment(contactSegment) {
-
-}
-
-// Destructor
-EdgeEdgeContact::~EdgeEdgeContact() {
-
-}
diff --git a/sources/reactphysics3d/constraint/EdgeEdgeContact.h b/sources/reactphysics3d/constraint/EdgeEdgeContact.h
deleted file mode 100644
index b735d6b8..00000000
--- a/sources/reactphysics3d/constraint/EdgeEdgeContact.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef EDGEEDGECONTACT_H
-#define EDGEEDGECONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class EdgeEdgeContact :
-        This class represents a edge-edge collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class EdgeEdgeContact : public Contact {
-    private :
-        Segment3D contactSegment;               // Contact segment
-
-    public :
-        EdgeEdgeContact(Body* const body1, Body* const body2, const Vector3D normalVector, const Time& time, const Segment3D& contactSegment);  // Constructor
-        virtual ~EdgeEdgeContact();                                                                                                             // Destructor
-
-        Segment3D getContactSegment() const;        // Return the contact segment
-};
-
-// Return the contact segment
-inline Segment3D EdgeEdgeContact::getContactSegment() const {
-    return contactSegment;
-}
-
-} // End of the ReactPhysics3D namespace
-
-#endif
-
diff --git a/sources/reactphysics3d/constraint/EdgeVertexContact.cpp b/sources/reactphysics3d/constraint/EdgeVertexContact.cpp
deleted file mode 100644
index f5bd2de9..00000000
--- a/sources/reactphysics3d/constraint/EdgeVertexContact.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "EdgeVertexContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-EdgeVertexContact::EdgeVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time,  const Vector3D& contactVertex)
-                  :Contact(body1, body2, normalVector, time), contactVertex(contactVertex) {
-
-}
-
-// Destructor
-EdgeVertexContact::~EdgeVertexContact() {
-
-}
diff --git a/sources/reactphysics3d/constraint/EdgeVertexContact.h b/sources/reactphysics3d/constraint/EdgeVertexContact.h
deleted file mode 100644
index f9132f4f..00000000
--- a/sources/reactphysics3d/constraint/EdgeVertexContact.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef EDGEVERTEXCONTACT_H
-#define EDGEVERTEXCONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-
-/*  -------------------------------------------------------------------
-    Class EdgeVertexContact :
-        This class represents a edge-vertex collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class EdgeVertexContact : public Contact {
-    private :
-        Vector3D contactVertex;         // Contact vertex
-
-    public :
-        EdgeVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time,  const Vector3D& contactVertex);    // Constructor
-        virtual ~EdgeVertexContact();                                                                                                               // Destructor
-
-        Vector3D getContactVertex() const;          // Return the contact vertex
-};
-
-// Return the contact vertex
-inline Vector3D EdgeVertexContact::getContactVertex() const {
-    return contactVertex;
-}
-
-} // End of the ReactPhysics3D namespace
-#endif
diff --git a/sources/reactphysics3d/constraint/FaceEdgeContact.cpp b/sources/reactphysics3d/constraint/FaceEdgeContact.cpp
deleted file mode 100644
index 084045a7..00000000
--- a/sources/reactphysics3d/constraint/FaceEdgeContact.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "FaceEdgeContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-FaceEdgeContact::FaceEdgeContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Segment3D& contactSegment)
-                :Contact(body1, body2, normalVector, time), contactSegment(contactSegment) {
-
-}
-
-// Destructor
-FaceEdgeContact::~FaceEdgeContact() {
-
-}
-
-
diff --git a/sources/reactphysics3d/constraint/FaceEdgeContact.h b/sources/reactphysics3d/constraint/FaceEdgeContact.h
deleted file mode 100644
index 3c29edbf..00000000
--- a/sources/reactphysics3d/constraint/FaceEdgeContact.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/***************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef FACEEDGECONTACT_H
-#define FACEEDGECONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class FaceEdgeContact :
-        This class represents a face-edge collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class FaceEdgeContact : public Contact {
-    private :
-        Segment3D contactSegment;
-
-    public :
-        FaceEdgeContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time,  const Segment3D& contactSegment);  // Constructor
-        virtual ~FaceEdgeContact();                                                                                                         // Destructor
-
-        Segment3D getContactSegment() const;            // Return the contact segment
-};
-
-// Return the contact segment
-inline Segment3D FaceEdgeContact::getContactSegment() const {
-    return contactSegment;
-}
-
-} // End of the ReactPhysics3D namespace
-
-#endif
diff --git a/sources/reactphysics3d/constraint/FaceFaceContact.cpp b/sources/reactphysics3d/constraint/FaceFaceContact.cpp
deleted file mode 100644
index 4f50f17d..00000000
--- a/sources/reactphysics3d/constraint/FaceFaceContact.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "FaceFaceContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-FaceFaceContact::FaceFaceContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Polygon3D& contactPolygon)
-                :Contact(body1, body2, normalVector, time), contactPolygon(contactPolygon) {
-
-}
-
-// Destructor
-FaceFaceContact::~FaceFaceContact() {
-
-}
diff --git a/sources/reactphysics3d/constraint/FaceFaceContact.h b/sources/reactphysics3d/constraint/FaceFaceContact.h
deleted file mode 100644
index d58573ca..00000000
--- a/sources/reactphysics3d/constraint/FaceFaceContact.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef FACEFACECONTACT_H
-#define FACEFACECONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class FaceFaceContact :
-        This class represents a face-face collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class FaceFaceContact : public Contact {
-    private :
-        Polygon3D contactPolygon;
-
-    public :
-        FaceFaceContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time,  const Polygon3D& contactPolygon);    // Constructor
-        virtual ~FaceFaceContact();                                                                                                                 // Destructor
-
-        Polygon3D getContactPolygon() const;                // Return the contact polygon
-
-};
-
-// Return the contact polygon
-inline Polygon3D FaceFaceContact::getContactPolygon() const {
-    return contactPolygon;
-}
-
-} // End of the ReactPhysics3D namespace
-#endif
diff --git a/sources/reactphysics3d/constraint/FaceVertexContact.cpp b/sources/reactphysics3d/constraint/FaceVertexContact.cpp
deleted file mode 100644
index 62c54664..00000000
--- a/sources/reactphysics3d/constraint/FaceVertexContact.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "FaceVertexContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-FaceVertexContact::FaceVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Vector3D& contactVertex)
-                  :Contact(body1, body2, normalVector, time), contactVertex(contactVertex) {
-
-}
-
-// Destructor
-FaceVertexContact::~FaceVertexContact() {
-
-}
diff --git a/sources/reactphysics3d/constraint/FaceVertexContact.h b/sources/reactphysics3d/constraint/FaceVertexContact.h
deleted file mode 100644
index e94aa225..00000000
--- a/sources/reactphysics3d/constraint/FaceVertexContact.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef FACEVERTEXCONTACT_H
-#define FACEVERTEXCONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class FaceVertexContact :
-        This class represents a face-vertex collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class FaceVertexContact : public Contact {
-    private :
-        Vector3D contactVertex;             // Contact vertex
-
-    public :
-        FaceVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Vector3D& contactVertex);     // Constructor
-        virtual ~FaceVertexContact();                                                                                                               // Destructor
-
-        Vector3D getContactVertex() const;              // Return the contact vertex
-};
-
-// Return the contact vertex
-inline Vector3D FaceVertexContact::getContactVertex() const {
-    return contactVertex;
-}
-
-} // End of the ReactPhysics3D namespace
-
-#endif
diff --git a/sources/reactphysics3d/constraint/VertexVertexContact.cpp b/sources/reactphysics3d/constraint/VertexVertexContact.cpp
deleted file mode 100644
index 973b7712..00000000
--- a/sources/reactphysics3d/constraint/VertexVertexContact.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-// Libraries
-#include "VertexVertexContact.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-VertexVertexContact::VertexVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Vector3D& contactVertex)
-                    :Contact(body1, body2, normalVector, time), contactVertex(contactVertex) {
-
-}
-
-// Destructor
-VertexVertexContact::~VertexVertexContact() {
-
-}
diff --git a/sources/reactphysics3d/constraint/VertexVertexContact.h b/sources/reactphysics3d/constraint/VertexVertexContact.h
deleted file mode 100644
index 2ee545ba..00000000
--- a/sources/reactphysics3d/constraint/VertexVertexContact.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/****************************************************************************
-* Copyright (C) 2009      Daniel Chappuis                                  *
-****************************************************************************
-* This file is part of ReactPhysics3D.                                     *
-*                                                                          *
-* ReactPhysics3D is free software: you can redistribute it and/or modify   *
-* it under the terms of the GNU Lesser General Public License as published *
-* by the Free Software Foundation, either version 3 of the License, or     *
-* (at your option) any later version.                                      *
-*                                                                          *
-* ReactPhysics3D is distributed in the hope that it will be useful,        *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of           *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
-* GNU Lesser General Public License for more details.                      *
-*                                                                          *
-* You should have received a copy of the GNU Lesser General Public License *
-* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
-***************************************************************************/
-
-#ifndef VERTEXVERTEXCONTACT_H
-#define VERTEXVERTEXCONTACT_H
-
-// Libraries
-#include "Contact.h"
-#include "../mathematics/mathematics.h"
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class VertexVertexContact :
-        This class represents a vertex-vertex collision contact between two
-        bodies in the physics engine.
-    -------------------------------------------------------------------
-*/
-class VertexVertexContact : public Contact {
-    private :
-        Vector3D contactVertex;         // Contact vertex
-
-    public :
-        VertexVertexContact(Body* const body1, Body* const body2, const Vector3D& normalVector, const Time& time, const Vector3D& contactVertex);     // Constructor
-        virtual ~VertexVertexContact();                                                                                                               // Destructor
-
-        Vector3D getContactVertex() const;      // Return the contact vertex
-
-};
-
-// Return the contact vertex
-inline Vector3D VertexVertexContact::getContactVertex() const {
-    return contactVertex;
-}
-
-
-} // End of the ReactPhysics3D namespace
-#endif