# PhysicsRotate > Represents a 2D rotation. ## Definition * **Type:** Struct * **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md) * **Assembly:** UnityEngine.PhysicsCore2DModule * **Implements:** [ISerializationCallbackReceiver](/engine/6000.5/script-reference/unityengine/iserializationcallbackreceiver.md) ```csharp public struct PhysicsRotate : ISerializationCallbackReceiver ``` ## Fields | Value | Description | | ----------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [direction](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/direction.md) | The rotation direction where X = cos(rotation) and Y = sin(rotation). This should always be normalized otherwise warnings will be produced when used, however this is not enforced. See [\_isNormalized](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/isnormalized.md) and [PhysicsRotate.Normalized](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/normalized.md). | ## Constructors | Constructor | Description | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | | [PhysicsRotate()](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/ctor.md#physicsrotate\(\)) | Create an identity rotation. | | [PhysicsRotate(UnityEngine.Quaternion,Unity.U2D.Physics.PhysicsWorld.TransformPlane)](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/ctor.md#physicsrotate\(quaternion-transformplane\)) | Create a rotation with the specified [Quaternion](/engine/6000.5/script-reference/unityengine/quaternion.md). | | [PhysicsRotate(UnityEngine.Vector2)](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/ctor.md#physicsrotate\(vector2\)) | Create a rotation with the specified direction. | ## Properties | Property | Description | | ----------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [cos](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/cos.md) | The cosine of the rotation angle. | | [degrees](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/degrees.md) | Get the rotation, in degrees. | | [isNormalized](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/isnormalized.md) | Is the rotation normalized? If not, it should be normalized using [PhysicsRotate.Normalized](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/normalized.md). | | [isValid](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/isvalid.md) | Check if the rotation is valid (not NaN and Normalized). | | [radians](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/radians.md) | Get the rotation, in radians. | | [sin](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/sin.md) | The sine of the rotation angle. | ## Static Properties | Property | Description | | --------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | | [down](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/down.md) | A rotation of -PI/2 Radians (-90 Degrees or +270 Degrees). | | [identity](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/identity.md) | The identity rotation i.e. no rotation. | | [left](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/left.md) | A rotation of +PI Radians (+/- 180 Degrees). | | [right](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/right.md) | A rotation of zero Radians. This is the same as identity. See [\_identity](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/identity.md). | | [up](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/up.md) | A rotation of +PI/2 Radians (+90 Degrees). | ## Methods | Method | Description | | --------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | [AngularVelocity](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/angularvelocity.md) | Calculate the angular velocity necessary to rotate the current rotation and the specified rotation over a give time. | | [GetMatrix](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/getmatrix.md) | Calculate a rotation [Matrix4x4](/engine/6000.5/script-reference/unityengine/matrix4x4.md) using the specified transform plane. | | [GetRelativeAngle](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/getrelativeangle.md) | Get the relative angle between this rotation and the specified rotation. The limits of this are +/- [PhysicsMath.PI](/engine/6000.5/script-reference/unity/u2d/physics/physicsmath/pi.md). | | [IntegrateRotation](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/integraterotation.md) | Integrate the rotation using the specified angle change. | | [Inverse](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/inverse.md) | Calculate a new inverse rotation of the current rotation. | | [InverseMultiplyRotation](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/inversemultiplyrotation.md) | Inverse Multiply a rotation with this rotation. | | [InverseRotateVector](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/inverserotatevector.md) | Inverse Rotate a vector. | | [LerpRotation](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/lerprotation.md) | Calculate the normalized linear interpolation of this rotation and the specified rotation using the specified interval. | | [MultiplyRotation](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/multiplyrotation.md) | Multiply a rotation with this rotation. | | [Normalized](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/normalized.md) | Create a normalized rotation. | | [Rotate](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/rotate.md) | Calculate a new rotation of the current rotation by the specified angle. | | [RotateVector](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/rotatevector.md) | Rotate a vector. | ## Static Methods | Method | Description | | ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | | [AngularVelocity](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/angularvelocity.md) | Calculate the angular velocity necessary to rotate between two rotations over a give time. | | [FromDegrees](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/fromdegrees.md) | Create a rotation with the specified rotation, in degrees. | | [FromRadians](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/fromradians.md) | Create a rotation with the specified rotation, in radians. | | [LerpRotation](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/lerprotation.md) | Calculate the normalized linear interpolation between two rotations using the specified fraction. | | [UnwindAngle](/engine/6000.5/script-reference/unity/u2d/physics/physicsrotate/unwindangle.md) | Convert any angle into the range \[-pi, pi]. |