# PhysicsFixedJointDefinition

> A joint definition used to specify properties when creating a PhysicsFixedJoint.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public struct PhysicsFixedJointDefinition
```

## Constructors

| Constructor                                                                                                                                                                          | Description                                                                                                                          |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ |
| [PhysicsFixedJointDefinition()](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/ctor.md#physicsfixedjointdefinition\(\))                   | Create a default [PhysicsFixedJoint](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjoint.md) definition. |
| [PhysicsFixedJointDefinition(System.Boolean)](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/ctor.md#physicsfixedjointdefinition\(bool\)) | Create a default [PhysicsFixedJoint](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjoint.md) definition. |

## Properties

| Property                                                                                                                          | Description                                                                                                               |
| --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- |
| [angularDamping](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/angulardamping.md)     | Angular damping, non-dimensional. Use 1 for critical damping.                                                             |
| [angularFrequency](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/angularfrequency.md) | Angular stiffness frequency, in cycles per second. Use zero for maximum stiffness.                                        |
| [bodyA](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/bodya.md)                       | The first body the joint constrains.                                                                                      |
| [bodyB](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/bodyb.md)                       | The second body the joint constrains.                                                                                     |
| [collideConnected](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/collideconnected.md) | Whether the shapes on the pair of bodies can come into contact.                                                           |
| [drawScale](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/drawscale.md)               | Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling. |
| [forceThreshold](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/forcethreshold.md)     | The force threshold beyond which a joint event will be produced.                                                          |
| [linearDamping](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/lineardamping.md)       | Linear damping, non-dimensional. Use 1 for critical damping.                                                              |
| [linearFrequency](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/linearfrequency.md)   | Linear stiffness frequency, in cycles per second. Use zero for maximum stiffness.                                         |
| [localAnchorA](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/localanchora.md)         | The local anchor frame constraint relative to bodyA's origin.                                                             |
| [localAnchorB](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/localanchorb.md)         | The local anchor frame constraint relative to bodyB's origin.                                                             |
| [torqueThreshold](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/torquethreshold.md)   | The torque threshold beyond which a joint event will be produced.                                                         |
| [tuningDamping](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/tuningdamping.md)       | Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.                                        |
| [tuningFrequency](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/tuningfrequency.md)   | Controls the joint stiffness frequency, in cycles per second.                                                             |

## Static Properties

| Property                                                                                                                            | Description                                                                                                                       |
| ----------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| [defaultDefinition](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjointdefinition/defaultdefinition.md) | Get a default [PhysicsFixedJoint](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsfixedjoint.md) definition. |