Re: Spiralling particles effect

You can animate the position in a spiral by moving the x & y on a sine and cosine wave and z in time like this:

phase=0;
amplitude=20;
frequency=10;
z_stretch=100;
x=Math.sin((time+phase)*frequency)*amplitude;
y=Math.cos((time+phase)*frequency)*amplitude;
z= (time+phase)*z_stretch;
[x,y,z]



You can change the value of the phase (positive or negative) for your second strand so that they twirl around each other.

If you are using particular you'll need to split the expression out like this:

phase=0;
amplitude=20;
frequency=10;
z_stretch=100;
x=Math.sin((time+phase)*frequency)*amplitude;
y=Math.cos((time+phase)*frequency)*amplitude;
[x,y]

and:

phase=0;
amplitude=20;
frequency=10;
z_stretch=100;
z=(time+phase)*z_stretch;


-Lloyd

http://aescripts.com