# startRotation3D

> The initial 3D rotation of particles when emitted. When using curves, this value acts as a scale on the curves.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

> **Warning:**
>
> **Deprecated.** startRotation3D property is deprecated. Use main.startRotationX, main.startRotationY and main.startRotationZ instead. (Or main.startRotationXMultiplier, main.startRotationYMultiplier and main.startRotationZMultiplier).

```csharp
public Vector3 startRotation3D { get; set; }
```

### Remarks

Note that the values are Euler angles and should be given in radians.