compute_gravity.hh
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compute_gravity.hh
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			#ifndef __COMPUTE_GRAVITY__HH__
			#define __COMPUTE_GRAVITY__HH__

			/* -------------------------------------------------------------------------- */
			#include "compute_interaction.hh"

			//! Compute Newton gravity interaction
			class ComputeGravity : public ComputeInteraction {

			// Virtual implementation
			public:
			//! Newton gravity implementation
			void compute(System& system) override;

			// Accessors
			public:
			//! set the gravitational constant
			void setG(Real G);

			// Members
			private:
			//! newton constant
			Real G = 1.;
			};

			/* -------------------------------------------------------------------------- */
			#endif //__COMPUTE_GRAVITY__HH__