[Gergely Bencsik]

Hi

I think this could work for you. You did most of the work figuring out the modulus-thing, you can just put that in an if-else.

 

freq = 0.25;

// sin input

phi = time*freq;

if(phi%1>0.25)

{

y=0;

}

else

{

y = -Math.sin(Math.PI*2*phi)*200;

}

y