# PhysicsBody.TransformWriteTween > Used to define a Transform write "tween" for a body. ## Definition * **Type:** Struct * **Namespace:** [Unity.U2D.Physics](/engine/7000.0/script-reference/unity/u2d/physics.md) * **Assembly:** UnityEngine.PhysicsCore2DModule * **Implements:** [IEquatable\](https://learn.microsoft.com/dotnet/api/system.iequatable-1) ```csharp public struct PhysicsBody.TransformWriteTween : IEquatable ``` ## Properties | Property | Description | | ----------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [angularVelocity](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/angularvelocity.md) | The angular velocity of the body to be used during the lifetime of the tween, in degrees per second. This is typically used when the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md). | | [body](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/body.md) | The body to be used during the lifetime of the tween. | | [linearVelocity](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/linearvelocity.md) | The linear velocity of the body to be used during the lifetime of the tween. This is typically used when the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md). | | [physicsTransform](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/physicstransform.md) | The physics transform to be used during the lifetime of the tween. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Interpolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/interpolate.md), this defines the target pose to move to. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md), this defines the source pose to move from. | | [positionFrom](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/positionfrom.md) | The start position of the tween. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Current](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/current.md), this is set to the last [Transform.position](/engine/7000.0/script-reference/unityengine/transform/position.md). but is not used. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Interpolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/interpolate.md), this is set to the last [Transform.position](/engine/7000.0/script-reference/unityengine/transform/position.md). When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md), this will be calculated from [PhysicsBody.TransformWriteTween.physicsTransform](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/physicstransform.md). See [Transform.position](/engine/7000.0/script-reference/unityengine/transform/position.md). | | [rotationFrom](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/rotationfrom.md) | The start rotation of the tween. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Current](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/current.md), this is set to the last [Transform.rotation](/engine/7000.0/script-reference/unityengine/transform/rotation.md) but is not used. When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Interpolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/interpolate.md), this is set to the last [Transform.rotation](/engine/7000.0/script-reference/unityengine/transform/rotation.md). When the [PhysicsBody.TransformWriteTween.transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) is [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md), this will be calculated from [PhysicsBody.TransformWriteTween.physicsTransform](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/physicstransform.md). See [Transform.rotation](/engine/7000.0/script-reference/unityengine/transform/rotation.md). | | [transform](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transform.md) | The [Transform](/engine/7000.0/script-reference/unityengine/transform.md) to be used during the lifetime of the tween. | | [transformDepth](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformdepth.md) | The depth of the [Transform](/engine/7000.0/script-reference/unityengine/transform.md) in the hierarchy where zero is the root. When the [PhysicsWorld.transformTweenMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsworld/transformtweenmode-1.md) is anything other than [PhysicsWorld.TransformTweenMode.Parallel](/engine/7000.0/script-reference/unity/u2d/physics/physicsworld/transformtweenmode/parallel.md), all [PhysicsBody.TransformWriteTween](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween.md) are sorted into ascending depth order so that writing the transforms in tween order will result in the deeper children correctly overwriting any parent transform writes. This is NOT set when the [PhysicsWorld.transformTweenMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsworld/transformtweenmode-1.md) is set to [PhysicsWorld.TransformTweenMode.Parallel](/engine/7000.0/script-reference/unity/u2d/physics/physicsworld/transformtweenmode/parallel.md) and will be zero. | | [transformWriteMode](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/transformwritemode.md) | The transform write mode to be used during the lifetime of the tween. Anything other than [PhysicsBody.TransformWriteMode.Interpolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/interpolate.md) or [PhysicsBody.TransformWriteMode.Extrapolate](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritemode/extrapolate.md) will be removed. | ## Methods | Method | Description | | ------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ | | [GetExtrapolatedPose](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/getextrapolatedpose.md) | Get the extrapolated pose for the current write tween. | | [GetInterpolatedPose](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/getinterpolatedpose.md) | Get the interpolated pose for the current write tween. | | [GetPose](/engine/7000.0/script-reference/unity/u2d/physics/physicsbody/transformwritetween/getpose.md) | Get the write pose for the current write tween. |