[SanchoBuendia]

Hi everyone,


I need create an UDF to simulate the movement of the body as sinusoidal movement. I`m trying write but I still have some doubts, my udf


#include "udf.h"
#define f 34
#define pi 3.14
#define A 0.0015

DEFINE_PROFILE(velocity_z,t,i)
{
real tt = CURRENT_TIME;
double FreqAng;

FreqAng = 2*3.14*f;
F_PROFILE(f,t,i) = -A*FreqAng*sin(FreqAng*tt);

}


Do I need put the



begin_f_loop(f,thread)



and




F_CENTROID(x, f, thread);


What will be the correct form of write the UDF?