# PhysicsRotate > Represents a 2D rotation. ## Definition * **Type:** Struct * **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md) * **Assembly:** UnityEngine.Physics2DModule * **Implements:** [ISerializationCallbackReceiver](/engine/6000.3/script-reference/unityengine/iserializationcallbackreceiver.md) ```csharp public struct PhysicsRotate : ISerializationCallbackReceiver ``` ## Fields | Value | Description | | ----------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [direction](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/direction.md) | The rotation direction where X = cos(angle) and Y = sin(angle). This should always be normalized otherwise warnings will be produced when used, however this is not enforced. See [PhysicsRotate.isNormalized](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/isnormalized.md) and [PhysicsRotate.Normalized](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/normalized.md). | ## Constructors | Constructor | Description | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | | [PhysicsRotate()](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/ctor.md#physicsrotate\(\)) | Create an identity rotation. | | [PhysicsRotate(System.Single)](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/ctor.md#physicsrotate\(float\)) | Create a rotation with the specified angle. | | [PhysicsRotate(UnityEngine.Quaternion,UnityEngine.LowLevelPhysics2D.PhysicsWorld.TransformPlane)](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/ctor.md#physicsrotate\(quaternion-transformplane\)) | Create a rotation with the specified [Quaternion](/engine/6000.3/script-reference/unityengine/quaternion.md). | | [PhysicsRotate(UnityEngine.Vector2)](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/ctor.md#physicsrotate\(vector2\)) | Create a rotation with the specified direction. | ## Properties | Property | Description | | ----------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [angle](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/angle.md) | Get the angle which this rotation represents, in radians. | | [cos](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/cos.md) | The cosine of the rotation angle. | | [isNormalized](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/isnormalized.md) | Is the rotation normalized? If not, it should be normalized using [PhysicsRotate.Normalized](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/normalized.md). | | [isValid](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/isvalid.md) | Check if the rotation is valid (not NaN and Normalized). | | [sin](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/sin.md) | The sine of the rotation angle. | ## Static Properties | Property | Description | | --------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [down](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/down.md) | A rotation of -PI/2 Radians (-90 Degrees or +270 Degrees). | | [identity](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/identity.md) | The identity rotation i.e. no rotation. | | [left](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/left.md) | A rotation of +PI Radians (+/- 180 Degrees). | | [right](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/right.md) | A rotation of zero Radians. This is the same as identity. See [PhysicsRotate.identity](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/identity.md). | | [up](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/up.md) | A rotation of +PI/2 Radians (+90 Degrees). | ## Methods | Method | Description | | --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | [AngularVelocity](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/angularvelocity.md) | Calculate the angular velocity necessary to rotate the current rotation and the specified rotation over a give time. | | [GetMatrix](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/getmatrix.md) | Calculate a rotation [Matrix4x4](/engine/6000.3/script-reference/unityengine/matrix4x4.md) using the specified transform plane. | | [GetRelativeAngle](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/getrelativeangle.md) | Get the relative angle between this rotation and the specified rotation. The limits of this are +/- [PhysicsMath.PI](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsmath/pi.md). | | [IntegrateRotation](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/integraterotation.md) | Integrate the rotation using the specified angle change. | | [InverseMultiplyRotation](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/inversemultiplyrotation.md) | Inverse Multiply a rotation with this rotation. | | [InverseRotateVector](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/inverserotatevector.md) | Inverse Rotate a vector. | | [LerpRotation](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/lerprotation.md) | Calculate the normalized linear interpolation of this rotation and the specified rotation using the specified interval. | | [MultiplyRotation](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/multiplyrotation.md) | Multiply a rotation with this rotation. | | [Normalized](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/normalized.md) | Create a normalized rotation. | | [Rotate](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/rotate.md) | Rotate the rotation by the specified angle. | | [RotateVector](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/rotatevector.md) | Rotate a vector. | ## Static Methods | Method | Description | | ----------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | | [AngularVelocity](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/angularvelocity.md) | Calculate the angular velocity necessary to rotate between two rotations over a give time. | | [LerpRotation](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/lerprotation.md) | Calculate the normalized linear interpolation between two rotations using the specified fraction. | | [UnwindAngle](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsrotate/unwindangle.md) | Convert any angle into the range \[-pi, pi]. |