Can I connect a particle emitter to the position of a 3D null?

[seanj_vfx]

I'm trying to connect a particle emitter to a 3D null instead of lights. The reason is that when I connect Particular to a light it no longer seems to have any directional control. So I can't rotate it and make all the particles shoot in one direction, for example. All the rotate functions are disabled.

I'm trying to make a plane in in Video Copilots Element 3D look like it's firing bullets. I have a light attached to the muzzle of the gun but I had the directional problems I just outlined. So now I'm trying to attach the emitter to a 3D null object that will replace the light.

I'm not great at coding so if there's a way to control the direction of light emitters, or attach an emitter to a 3D null... or even a better way altogether I'd much appreciate the help.

Many thanks.

SJ.

[Mathias Moehl]

I don't have Element 3D and therefore I don't know exactly which parameters it has, but to connect any 3D point parameter to the position of a null, you can use the pick-whip or alternatively the Simple Link 3D iExpression.

If Element 3D has three separate parameters for x, y and z, you also use the pick-whip or use the Simple Link 1D iExpression.

If you use the Simple Link 1D to link to a 3D property (like the position of a 3D null), in the options of the link you find a dropdown to choose whether you want to link to the X-value, the Y-value or the Z-value. Hence, you can simply apply the link to all the properties (x,y and z) and each time choose the corresponding option.