---
title: "Emitter"
url: "https://help.maxon.net/c4d/en-us/Content/html/OPARTICLE-ID_EMITTER.html"
section_path: "Simulate Menu > Particles (legacy) > Particle Emitter Object > Emitter"
element_id: "OPARTICLE"
group_id: "ID_EMITTER"
description: "Choose whether the particles will be emitted in the shape of a cone or pyramid."
---

## Emitter

### Emitter Type

Parameter ID: `PARTICLEOBJECT_TYPE`

Choose whether the particles will be emitted in the shape of a cone or pyramid.

### X-Size

Parameter ID: `PARTICLEOBJECT_SIZEX` · Range: [0..+∞m]

### Y-Size

Parameter ID: `PARTICLEOBJECT_SIZEY` · Range: [0..+∞m]

Give the size of the emitter. You can also scale the emitter by selecting the Scale tool and dragging in the viewport.

### Angle Horizontal

Parameter ID: `PARTICLEOBJECT_ANGLEH` · Range: [0..360°]

### Angle Vertical

Parameter ID: `PARTICLEOBJECT_ANGLEV` · Range: [0..180°]

These parameters set the value of the emission angle.

![Image: 001978.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/001978.jpg)

If Emitter Type is set to **Cone**, the horizontal range is from 0° to 90°; with the Emitter Type set to **Pyramid**, the horizontal range is from 0° to 360° and the vertical range is from 0° to 180°.

> **Tip:** For example, to create a radial emitter, set Emitter Type to Pyramid, set X-Size and Y-Size both to 0, Angle Horizontal to 360° and Angle Vertical to 0°.

![Image: 001979.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/001979.jpg)