Upgrade to Newton 3.14 and make it a thirdparty lib

thirdparty/src/newton/dgCore/dgPolyhedraMassProperties.h

@@ -0,0 +1,41 @@
+/* Copyright (c) <2003-2019> <Julio Jerez, Newton Game Dynamics>
+* 
+* This software is provided 'as-is', without any express or implied
+* warranty. In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* 
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef __dgPolyhedraMassProperties__
+#define __dgPolyhedraMassProperties__
+
+class dgPolyhedraMassProperties
+{
+	public:
+	dgPolyhedraMassProperties();
+
+	void AddCGFace (dgInt32 indexCount, const dgVector* const faceVertex);
+	void AddInertiaFace (dgInt32 indexCount, const dgFloat32* const faceVertex);
+	void AddInertiaAndCrossFace (dgInt32 indexCount, const dgFloat32* const faceVertex);
+	
+	dgFloat32 MassProperties (dgVector& cg, dgVector& inertia, dgVector& crossInertia);
+
+	private:
+	dgFloat32 intg[10];
+	dgFloat32 mult[10];
+};
+
+#endif