3D Compositing with Action > Action: The Particle System >
Generating Particles

You can create a particle stream that behaves in different ways depending on the type of generator you use. When creating a particle stream, you can use three different generators: light source, surface, and 3D object.

Use as a Generator: | To:
--- | ---
light source | Create a stream of particles starting from a single point.
surface | Generate particles based on the area, shape, and colour of a surface.
3D object | Generate particles from the centre of each polygon.

#### Topics in this section

- Using a Light Source
- Using a Surface
- Using a 3D Object