I have created a particle system which movement is controlled by a flow field over perlin noise - Available here.
I would be very thankful for any ideas and tips how to control their movement on the Z-plane (noise is 3d), as my 3d knowledge is still very poor.
How to describe the movement controlled by noise value in the third dimension? I guess the displacement has to be described by a vector directing the movement and added to current possition, but how to determine the z component?
3d example video is available here