Connect and disconnect gravity

The following example shows how use the Dynamic Relationships Editor. You’ll create a pair of emitters and connect the emitted particles of one of the emitters to gravity. You’ll then switch connections so that the other object’s emitted particles fall with gravity instead.

To create the pair of emitters

Create two Omni point emitters in different parts of the workspace.
Select the emitted particles of the first emitter you created, then select Fields > Gravity.
This creates a gravity field and connects the selected particles to it.
Play the animation.
The particles emitted by the first emitter fall after being emitted.

Change the connections to gravity:

You can use the Dynamic Relationships Editor to switch the connection of gravity from one group of emitted particles to the other.

In the Dynamic Relationship Editor, turn on All.
Select particle1 in the left column.
There are three items you can connect particle1 to: emitter2, emitter1, and gravityField1. Currently, it’s connected to gravityField1 and emitter1.
Select particle2 in the left column.
It’s connected only to emitter2.
Select gravityField1 in the right column.
This connects particle2 to gravityField1.
Rewind and play the animation.
Both groups of particles fall under gravity.

To disconnect gravity from particle1, select particle1 in the left side of the editor, then deselect gravityField1 in the right side:
Rewind and play the animation to see the switched connection to gravity.