142 lines
3.9 KiB
C#
142 lines
3.9 KiB
C#
// "Wave SDK
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// © 2020 HTC Corporation. All Rights Reserved.
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//
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// Unless otherwise required by copyright law and practice,
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// upon the execution of HTC SDK license agreement,
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// HTC grants you access to and use of the Wave SDK(s).
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// You shall fully comply with all of HTC’s SDK license agreement terms and
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// conditions signed by you and all SDK and API requirements,
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// specifications, and documentation provided by HTC to You."
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using UnityEngine;
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namespace VIVE.OpenXR.Toolkits.RealisticHandInteraction
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{
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/// <summary>
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/// This class is designed to generate appropriately sized colliders for each joint.
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/// </summary>
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public class GrabCollider : MonoBehaviour
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{
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public enum CollisionState
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{
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start = 0,
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keep = 1,
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end = 2,
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}
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private CapsuleCollider m_Collider = null;
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public Collider Collider => m_Collider;
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private bool m_IsCollision = false;
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public bool IsCollision { get { return m_IsCollision; } set { m_IsCollision = value; } }
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private const float k_ColliderRadius = 0.01f;
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private const float k_ColliderHeight = 0.01f;
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private JointType jointType = JointType.Count;
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public delegate void CollisionHandler(JointType joint, Collision collision, CollisionState state);
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private CollisionHandler m_CollisionHandler;
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private void OnEnable()
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{
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m_Collider = transform.GetComponent<CapsuleCollider>();
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if (m_Collider == null)
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{
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m_Collider = transform.gameObject.AddComponent<CapsuleCollider>();
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}
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m_Collider.radius = k_ColliderRadius;
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m_Collider.height = k_ColliderHeight;
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m_Collider.direction = 2;
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Rigidbody rigidbody = transform.GetComponent<Rigidbody>();
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if (rigidbody == null)
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{
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rigidbody = transform.gameObject.AddComponent<Rigidbody>();
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}
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rigidbody.useGravity = false;
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rigidbody.collisionDetectionMode = CollisionDetectionMode.ContinuousSpeculative;
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rigidbody.constraints = RigidbodyConstraints.FreezeAll;
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}
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/// <summary>
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/// Set the joint id and adjust collider size..
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/// </summary>
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/// <param name="id">JointType of joint.</param>
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public void SetJointId(int id)
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{
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jointType = (JointType)id;
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if (m_Collider)
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{
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// Adjust the size and position of the collider based on jointId.
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switch (jointType)
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{
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case JointType.Thumb_Joint0:
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case JointType.Thumb_Joint1:
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m_Collider.height = 0.03f;
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break;
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case JointType.Index_Joint0:
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case JointType.Middle_Joint0:
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case JointType.Ring_Joint0:
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case JointType.Pinky_Joint0:
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m_Collider.height = 0.08f;
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m_Collider.center = new Vector3(0f, 0f, 0.02f);
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break;
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case JointType.Index_Joint1:
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case JointType.Middle_Joint1:
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case JointType.Ring_Joint1:
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case JointType.Pinky_Joint1:
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m_Collider.height = 0.05f;
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m_Collider.center = new Vector3(0f, 0f, 0.02f);
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break;
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case JointType.Index_Tip:
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case JointType.Middle_Tip:
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case JointType.Ring_Tip:
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case JointType.Pinky_Tip:
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m_Collider.radius = 0.005f;
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break;
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}
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}
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}
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public void AddListener(CollisionHandler handler)
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{
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m_CollisionHandler += handler;
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}
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public void RemoveListener(CollisionHandler handler)
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{
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m_CollisionHandler -= handler;
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}
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private void OnCollisionEnter(Collision collision)
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{
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if (!IsGrabCollider(collision.collider) && m_CollisionHandler != null)
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{
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m_CollisionHandler.Invoke(jointType, collision, CollisionState.start);
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}
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}
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private void OnCollisionStay(Collision collision)
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{
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if (!IsGrabCollider(collision.collider) && m_CollisionHandler != null)
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{
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m_CollisionHandler.Invoke(jointType, collision, CollisionState.keep);
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}
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}
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private void OnCollisionExit(Collision collision)
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{
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if (!IsGrabCollider(collision.collider) && m_CollisionHandler != null)
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{
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m_CollisionHandler.Invoke(jointType, collision, CollisionState.end);
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}
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}
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private bool IsGrabCollider(Collider collider)
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{
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GrabCollider grabCollider = collider.gameObject.GetComponent<GrabCollider>();
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return grabCollider != null;
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}
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}
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}
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