30 lines
2.0 KiB
Markdown
30 lines
2.0 KiB
Markdown
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# Noise properties
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Use Noise properties in a Virtual Camera to simulate camera shake. Cinemachine includes a __Basic Multi Channel Perlin__ component, which adds Perlin noise to the movement of the Virtual Camera. __Perlin noise__ is a technique to compute random movement with a natural behavior.
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The Basic Multi Channel Perlin component applies a noise profile. A noise profile is an Asset that defines the behavior of noise over time. Cinemachine includes a few noise profile assets. You can [edit these and create your own](CinemachineNoiseProfiles.md).
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To apply noise:
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1. Select your Virtual Camera in the [Scene](https://docs.unity3d.com/Manual/UsingTheSceneView.html) view or [Hierarchy](https://docs.unity3d.com/Manual/Hierarchy.html) window.
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2. In the [Inspector](https://docs.unity3d.com/Manual/UsingTheInspector.html), use the __Noise__ drop-down menu to choose __Basic Multi Channel Perlin__.
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3. In __Noise Profile__, choose an existing profile asset or [create your own profile](CinemachineNoiseProfiles.md).
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4. Use __Amplitude Gain__ and __Frequency Gain__ to fine-tune the noise.
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## Properties
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| **Property:** | **Function:** |
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|:---|:---|
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| __Noise Profile__ | The noise profile asset to use.|
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| __Amplitude Gain__ | Gain to apply to the amplitudes defined in the noise profile. Use 1 to use the amplitudes defined in the noise profile. Setting this to 0 mutes the noise. Tip: Animate this property to ramp the noise effect up and down.|
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| __Frequency Gain__ | Factor to apply to the frequencies defined in the noise profile. Use 1 to use the frequencies defined in the noise profile. Use larger values to shake the camera more rapidly. Tip: Animate this property to ramp the noise effect up and down. |
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| __Pivot Offset__ | When rotating the camera, offset the camera's pivot by the indicated x, y, and z distance when applying rotational noise. This generates some positional variation that corresponds to the rotation noise. |
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