투명디스플레이 연구사업

using System;

using System.Collections;

using UnityEngine;

using UnityEngine.Serialization;

using UnityEngine.EventSystems;

/// <summary>

/// Interaction IM is the input module that may be used as component of the Unity-UI EventSystem.

/// </summary>

public class InteractionInputModule : PointerInputModule, InteractionListenerInterface

{

	[Tooltip("Index of the player, tracked by this component. 0 means the 1st player, 1 - the 2nd one, 2 - the 3rd one, etc.")]

	public int playerIndex = 0;

	//private bool m_isLeftHand = false;

	private bool m_leftHandGrip = false;

	private bool m_rightHandGrip = false;

	private Vector3 m_screenNormalPos = Vector3.zero;

	private PointerEventData.FramePressState m_framePressState = PointerEventData.FramePressState.NotChanged;

	private readonly MouseState m_MouseState = new MouseState();

	// interaction manager for the same player

	private InteractionManager intManager;

	// The single instance of InteractionInputModule

	private static InteractionInputModule instance;

	/// <summary>

	/// Gets the single InteractionInputModule instance.

	/// </summary>

	/// <value>The InteractionInputModule instance.</value>

	public static InteractionInputModule Instance

	{

		get

		{

			return instance;

		}

	}

	protected InteractionInputModule()

    {

		instance = this;

	}

    [SerializeField]

    [FormerlySerializedAs("m_AllowActivationOnMobileDevice")]

    private bool m_ForceModuleActive;

    public bool forceModuleActive

    {

        get { return m_ForceModuleActive; }

        set { m_ForceModuleActive = value; }

    }

    public override bool IsModuleSupported()

    {

        return m_ForceModuleActive || InteractionManager.Instance != null;

    }

    public override bool ShouldActivateModule()

    {

        if (!base.ShouldActivateModule())

            return false;

		//bool shouldActivate |= (InteractionManager.Instance != null && InteractionManager.Instance.IsInteractionInited());

        bool shouldActivate = m_ForceModuleActive || (m_framePressState != PointerEventData.FramePressState.NotChanged);

        return shouldActivate;

    }

//    public override void ActivateModule()

//    {

//        base.ActivateModule();

//	    

//        var toSelect = eventSystem.currentSelectedGameObject;

//        if (toSelect == null)

//            toSelect = eventSystem.firstSelectedGameObject;

//

//        eventSystem.SetSelectedGameObject(toSelect, GetBaseEventData());

//    }

//    public override void DeactivateModule()

//    {

//        base.DeactivateModule();

//        ClearSelection();

//    }

    public override void Process()

    {

		if (intManager == null) 

		{

			intManager = GetInteractionManager();

		}

		CheckGrippedCursorPosition();

        ProcessInteractionEvent();

    }

	private InteractionManager GetInteractionManager()

	{

		// find the proper interaction manager

		MonoBehaviour[] monoScripts = FindObjectsOfType(typeof(MonoBehaviour)) as MonoBehaviour[];

		foreach(MonoBehaviour monoScript in monoScripts)

		{

			if((monoScript is InteractionManager) && monoScript.enabled)

			{

				InteractionManager manager = (InteractionManager)monoScript;

				if (manager.playerIndex == playerIndex) 

				{

					return manager;

				}

			}

		}

		// not found

		return null;

	}

	private void CheckGrippedCursorPosition()

	{

		if (intManager) 

		{

			bool bIsLeftHand = intManager.IsLeftHandPrimary();

			// check for gripped hand

			bool bHandGrip = bIsLeftHand ? m_leftHandGrip : m_rightHandGrip;

			// check for cursor pos change

			Vector2 cursorNormalPos = bIsLeftHand ? intManager.GetLeftHandScreenPos() : intManager.GetRightHandScreenPos();

			if (bHandGrip && cursorNormalPos != (Vector2)m_screenNormalPos) 

			{

				// emulate new press

				m_framePressState = PointerEventData.FramePressState.Pressed;

				m_screenNormalPos = cursorNormalPos;

			}

		}

	}

	protected void ProcessInteractionEvent()

    {

		// Emulate mouse data

		var mouseData = GetMousePointerEventData(0);

		var leftButtonData = mouseData.GetButtonState(PointerEventData.InputButton.Left).eventData;

		// Process the interaction data

		ProcessHandPressRelease(leftButtonData);

		ProcessMove(leftButtonData.buttonData);

		ProcessDrag(leftButtonData.buttonData);

    }

	protected override MouseState GetMousePointerEventData(int id)

	{

		// Populate the left button...

		PointerEventData leftData;

		var created = GetPointerData(kMouseLeftId, out leftData, true);

		leftData.Reset();

		Vector2 handPos = new Vector2(m_screenNormalPos.x * Screen.width, m_screenNormalPos.y * Screen.height);

		if (created) 

		{

			leftData.position = handPos;

		}

		leftData.delta = handPos - leftData.position;

		leftData.position = handPos;

		//leftData.scrollDelta = 0f;

		leftData.button = PointerEventData.InputButton.Left;

		eventSystem.RaycastAll(leftData, m_RaycastResultCache);

		var raycast = FindFirstRaycast(m_RaycastResultCache);

		leftData.pointerCurrentRaycast = raycast;

		m_RaycastResultCache.Clear();

		m_MouseState.SetButtonState(PointerEventData.InputButton.Left, m_framePressState, leftData);

		m_framePressState = PointerEventData.FramePressState.NotChanged;

		return m_MouseState;

	}

    /// <summary>

    /// Process the current hand press or release event.

    /// </summary>

	protected void ProcessHandPressRelease(MouseButtonEventData data)

    {

        var pointerEvent = data.buttonData;

        var currentOverGo = pointerEvent.pointerCurrentRaycast.gameObject;

        // PointerDown notification

        if (data.PressedThisFrame())

        {

            pointerEvent.eligibleForClick = true;

            pointerEvent.delta = Vector2.zero;

            pointerEvent.dragging = false;

            pointerEvent.useDragThreshold = true;

            pointerEvent.pressPosition = pointerEvent.position;

            pointerEvent.pointerPressRaycast = pointerEvent.pointerCurrentRaycast;

            DeselectIfSelectionChanged(currentOverGo, pointerEvent);

            // search for the control that will receive the press

            // if we can't find a press handler set the press

            // handler to be what would receive a click.

            var newPressed = ExecuteEvents.ExecuteHierarchy(currentOverGo, pointerEvent, ExecuteEvents.pointerDownHandler);

            // didnt find a press handler... search for a click handler

            if (newPressed == null)

                newPressed = ExecuteEvents.GetEventHandler<IPointerClickHandler>(currentOverGo);

            //Debug.Log("Pressed: " + newPressed);

            float time = Time.unscaledTime;

            if (newPressed == pointerEvent.lastPress)

            {

                var diffTime = time - pointerEvent.clickTime;

                if (diffTime < 0.3f)

                    ++pointerEvent.clickCount;

                else

                    pointerEvent.clickCount = 1;

                pointerEvent.clickTime = time;

            }

            else

            {

                pointerEvent.clickCount = 1;

            }

            pointerEvent.pointerPress = newPressed;

            pointerEvent.rawPointerPress = currentOverGo;

            pointerEvent.clickTime = time;

            // Save the drag handler as well

            pointerEvent.pointerDrag = ExecuteEvents.GetEventHandler<IDragHandler>(currentOverGo);

            if (pointerEvent.pointerDrag != null)

                ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.initializePotentialDrag);

        }

        // PointerUp notification

        if (data.ReleasedThisFrame())

        {

            // Debug.Log("Executing pressup on: " + pointer.pointerPress);

            ExecuteEvents.Execute(pointerEvent.pointerPress, pointerEvent, ExecuteEvents.pointerUpHandler);

            // see if we mouse up on the same element that we clicked on...

            var pointerUpHandler = ExecuteEvents.GetEventHandler<IPointerClickHandler>(currentOverGo);

            // PointerClick and Drop events

			if (pointerEvent.pointerPress != null && pointerEvent.pointerPress == pointerUpHandler && pointerEvent.eligibleForClick)

            {

                ExecuteEvents.Execute(pointerEvent.pointerPress, pointerEvent, ExecuteEvents.pointerClickHandler);

            }

            else if (pointerEvent.pointerDrag != null && pointerEvent.dragging)

            {

                ExecuteEvents.ExecuteHierarchy(currentOverGo, pointerEvent, ExecuteEvents.dropHandler);

            }

            pointerEvent.eligibleForClick = false;

            pointerEvent.pointerPress = null;

            pointerEvent.rawPointerPress = null;

            if (pointerEvent.pointerDrag != null && pointerEvent.dragging)

                ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.endDragHandler);

            pointerEvent.dragging = false;

            pointerEvent.pointerDrag = null;

            // redo pointer enter / exit to refresh state

            // so that if we moused over somethign that ignored it before

            // due to having pressed on something else

            // it now gets it.

            if (currentOverGo != pointerEvent.pointerEnter)

            {

                HandlePointerExitAndEnter(pointerEvent, null);

                HandlePointerExitAndEnter(pointerEvent, currentOverGo);

            }

        }

    }

	public void HandGripDetected(long userId, int userIndex, bool isRightHand, bool isHandInteracting, Vector3 handScreenPos)

	{

		if (userIndex != playerIndex || !isHandInteracting)

			return;

		//Debug.Log("HandGripDetected");

		m_framePressState = PointerEventData.FramePressState.Pressed;

		//m_isLeftHand = !isRightHand;

		m_screenNormalPos = handScreenPos;

		if (!isRightHand)

			m_leftHandGrip = true;

		else

			m_rightHandGrip = true;

	}

	public void HandReleaseDetected(long userId, int userIndex, bool isRightHand, bool isHandInteracting, Vector3 handScreenPos)

	{

		if (userIndex != playerIndex || !isHandInteracting)

			return;

		//Debug.Log("HandReleaseDetected");

		m_framePressState = PointerEventData.FramePressState.Released;

		//m_isLeftHand = !isRightHand;

		m_screenNormalPos = handScreenPos;

		if (!isRightHand)

			m_leftHandGrip = false;

		else

			m_rightHandGrip = false;

	}

	public bool HandClickDetected(long userId, int userIndex, bool isRightHand, Vector3 handScreenPos)

	{

		if (userIndex != playerIndex)

			return false;

		//Debug.Log("HandClickDetected");

		StartCoroutine(EmulateMouseClick(isRightHand, handScreenPos));

		return true;

	}

	private IEnumerator EmulateMouseClick(bool isRightHand, Vector3 handScreenPos)

	{

		m_framePressState = PointerEventData.FramePressState.Pressed;

		//m_isLeftHand = !isRightHand;

		m_screenNormalPos = handScreenPos;

		yield return new WaitForSeconds(0.2f);

		m_framePressState = PointerEventData.FramePressState.Released;

		//m_isLeftHand = !isRightHand;

		m_screenNormalPos = handScreenPos;

		yield return null;

	}

}