manifold_cylinder.cpp
4f65214374a5efficient_neuronet

manifold_cylinder.cpp
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			#include "manifold_cylinder.h"

			using namespace LAMMPS_NS;

			using namespace user_manifold;


			manifold_cylinder::manifold_cylinder( LAMMPS *lmp, int argc,
			char **argv ) : manifold(lmp)
			{}


			double manifold_cylinder::g( const double *x )
			{
			double R = params[0];
			double r2 = x[0]x[0] + x[1]x[1];
			return R*R - r2;
			}

			void manifold_cylinder::n( const double x, double n )
			{
			n[0] = -2*x[0];
			n[1] = -2*x[1];
			n[2] = 0.0;
			}