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using System;
using UnityEngine.XR.Interaction.Toolkit.Utilities.Tweenables.Primitives;
namespace UnityEngine.XR.Interaction.Toolkit.Samples.Hands
{
/// <summary>
/// Class used to sync the transform of a target game object with this one.
/// </summary>
public class TransformSync : MonoBehaviour
{
[SerializeField]
[Tooltip("Transform to apply this transform's data to.")]
Transform m_TargetTransform;
[SerializeField]
[Range(0f, 30f)]
[Tooltip("Set to 0 for no smoothing. Higher values indicate more smoothing.")]
float m_SmoothFollowSpeed = 8f;
Rigidbody m_Rigidbody;
bool m_HasTransform;
bool m_HasRigidbody;
Transform m_ThisTransform;
#pragma warning disable CS0618 // Type or member is obsolete
readonly Vector3TweenableVariable m_PositionTweenable = new Vector3TweenableVariable();
readonly QuaternionTweenableVariable m_RotationTweenable = new QuaternionTweenableVariable();
#pragma warning restore CS0618 // Type or member is obsolete
/// <summary>
/// See <see cref="MonoBehaviour"/>.
/// </summary>
void OnValidate()
{
if (m_TargetTransform != null)
{
transform.localPosition = transform.parent == null
? m_TargetTransform.position
: transform.parent.InverseTransformPoint(m_TargetTransform.position);
}
}
/// <summary>
/// See <see cref="MonoBehaviour"/>.
/// </summary>
void Awake()
{
m_ThisTransform = transform;
}
/// <summary>
/// See <see cref="MonoBehaviour"/>.
/// </summary>
void OnEnable()
{
if (m_TargetTransform == null)
{
enabled = false;
return;
}
m_HasTransform = true;
if (m_TargetTransform.TryGetComponent(out Rigidbody rigidBodyComponent))
{
m_Rigidbody = rigidBodyComponent;
m_HasRigidbody = true;
}
m_PositionTweenable.Value = m_ThisTransform.position;
m_RotationTweenable.Value = m_ThisTransform.rotation;
}
/// <summary>
/// See <see cref="MonoBehaviour"/>.
/// </summary>
void Update()
{
m_PositionTweenable.target = m_ThisTransform.position;
m_RotationTweenable.target = m_ThisTransform.rotation;
var tweenTarget = m_SmoothFollowSpeed > 0f ? m_SmoothFollowSpeed * Time.deltaTime : 1f;
m_PositionTweenable.HandleTween(tweenTarget);
m_RotationTweenable.HandleTween(tweenTarget);
if (!m_HasRigidbody && m_HasTransform)
m_TargetTransform.SetPositionAndRotation(m_PositionTweenable.Value, m_RotationTweenable.Value);
}
/// <summary>
/// See <see cref="MonoBehaviour"/>.
/// </summary>
void FixedUpdate()
{
if (!m_HasRigidbody)
return;
m_Rigidbody.MovePosition(m_PositionTweenable.Value);
m_Rigidbody.MoveRotation(m_RotationTweenable.Value);
}
}
}
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