internal static extern void NewtonMaterialSetCollisionCallback(IntPtr pNewtonWorld,
int pId0,
int pId1,
IntPtr pUserData,
NewtonContactBegin pBegin,
NewtonContactProcess pProcess,
NewtonContactEnd pEnd);
internal static extern void NewtonMaterialSetCollisionCallback(IntPtr pNewtonWorld, int pId0, int pId1, IntPtr pUserData, NewtonContactBegin pBegin, NewtonContactProcess pProcess, NewtonContactEnd pEnd);