---
title: init()
framework: realitykit
role: symbol
role_heading: Initializer
path: realitykit/physicsmassproperties/init()
---

# init()

Creates a mass properties instance with default settings.

## Declaration

```swift
init()
```

## See Also

### Creating custom mass properties

- [init(mass:inertia:centerOfMass:)](realitykit/physicsmassproperties/init(mass:inertia:centerofmass:).md)
- [init(shape:density:)](realitykit/physicsmassproperties/init(shape:density:).md)
- [init(shape:mass:)](realitykit/physicsmassproperties/init(shape:mass:).md)