# Sandbox.PhysicsGroupDescription

Describes the physics shapes of a model or standalone vphys resource.
Wraps native `CPhysicsData` the same way [Sandbox.Model](/api/Sandbox.Model) wraps `IModel`.

- Kind: class
- Namespace: `Sandbox`
- Assembly: `Sandbox.Engine`
- Inherits: [Sandbox.Resource](/api/Sandbox.Resource)
- Modifiers: sealed

## Properties

- [`BoneCount`](/api/Sandbox.PhysicsGroupDescription/BoneCount)
- [`IsValid`](/api/Sandbox.PhysicsGroupDescription/IsValid)
- [`Joints`](/api/Sandbox.PhysicsGroupDescription/Joints)
- [`Name`](/api/Sandbox.PhysicsGroupDescription/Name)
- [`Parts`](/api/Sandbox.PhysicsGroupDescription/Parts)
- [`Surfaces`](/api/Sandbox.PhysicsGroupDescription/Surfaces): Enumerate every [Sandbox.Surface](/api/Sandbox.Surface) in this physics description.

## Methods

- [`Load`](/api/Sandbox.PhysicsGroupDescription/Load): Load a [Sandbox.PhysicsGroupDescription](/api/Sandbox.PhysicsGroupDescription) from a vphys resource path.