914 lines
38 KiB
C#
914 lines
38 KiB
C#
/************************************************************************************
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Copyright : Copyright 2017 Oculus VR, LLC. All Rights reserved.
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Licensed under the Oculus VR Rift SDK License Version 3.4.1 (the "License");
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you may not use the Oculus VR Rift SDK except in compliance with the License,
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which is provided at the time of installation or download, or which
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otherwise accompanies this software in either electronic or hard copy form.
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You may obtain a copy of the License at
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https://developer.oculus.com/licenses/sdk-3.4.1
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Unless required by applicable law or agreed to in writing, the Oculus VR SDK
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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************************************************************************************/
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using System;
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using System.Collections.Generic;
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namespace UnityEngine.EventSystems
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{
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/// <summary>
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/// VR extension of PointerInputModule which supports gaze and controller pointing.
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/// </summary>
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public class OVRInputModule : PointerInputModule
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{
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[Tooltip("Object which points with Z axis. E.g. CentreEyeAnchor from OVRCameraRig")]
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public Transform rayTransform;
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[Tooltip("Gamepad button to act as gaze click")]
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public OVRInput.Button joyPadClickButton = OVRInput.Button.One;
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[Tooltip("Keyboard button to act as gaze click")]
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public KeyCode gazeClickKey = KeyCode.Space;
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[Header("Physics")]
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[Tooltip("Perform an sphere cast to determine correct depth for gaze pointer")]
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public bool performSphereCastForGazepointer;
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[Tooltip("Match the gaze pointer normal to geometry normal for physics colliders")]
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public bool matchNormalOnPhysicsColliders;
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[Header("Gamepad Stick Scroll")]
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[Tooltip("Enable scrolling with the right stick on a gamepad")]
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public bool useRightStickScroll = true;
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[Tooltip("Deadzone for right stick to prevent accidental scrolling")]
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public float rightStickDeadZone = 0.15f;
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[Header("Touchpad Swipe Scroll")]
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[Tooltip("Enable scrolling by swiping the GearVR touchpad")]
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public bool useSwipeScroll = true;
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[Tooltip("Minimum trackpad movement in pixels to start swiping")]
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public float swipeDragThreshold = 2;
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[Tooltip("Distance scrolled when swipe scroll occurs")]
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public float swipeDragScale = 1f;
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/* It's debatable which way left and right are on the Gear VR touchpad since it's facing away from you
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* the following bool allows this to be swapped*/
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[Tooltip("Invert X axis on touchpad")]
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public bool InvertSwipeXAxis = false;
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// The raycaster that gets to do pointer interaction (e.g. with a mouse), gaze interaction always works
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[NonSerialized]
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public OVRRaycaster activeGraphicRaycaster;
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[Header("Dragging")]
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[Tooltip("Minimum pointer movement in degrees to start dragging")]
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public float angleDragThreshold = 1;
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// The following region contains code exactly the same as the implementation
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// of StandaloneInputModule. It is copied here rather than inheriting from StandaloneInputModule
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// because most of StandaloneInputModule is private so it isn't possible to easily derive from.
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// Future changes from Unity to StandaloneInputModule will make it possible for this class to
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// derive from StandaloneInputModule instead of PointerInput module.
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//
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// The following functions are not present in the following region since they have modified
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// versions in the next region:
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// Process
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// ProcessMouseEvent
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// UseMouse
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#region StandaloneInputModule code
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private float m_NextAction;
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private Vector2 m_LastMousePosition;
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private Vector2 m_MousePosition;
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protected OVRInputModule()
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{}
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#if UNITY_EDITOR
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protected override void Reset()
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{
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allowActivationOnMobileDevice = true;
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}
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#endif
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[Obsolete("Mode is no longer needed on input module as it handles both mouse and keyboard simultaneously.", false)]
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public enum InputMode
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{
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Mouse,
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Buttons
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}
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[Obsolete("Mode is no longer needed on input module as it handles both mouse and keyboard simultaneously.", false)]
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public InputMode inputMode
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{
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get { return InputMode.Mouse; }
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}
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[Header("Standalone Input Module")]
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[SerializeField]
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private string m_HorizontalAxis = "Horizontal";
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/// <summary>
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/// Name of the vertical axis for movement (if axis events are used).
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/// </summary>
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[SerializeField]
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private string m_VerticalAxis = "Vertical";
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/// <summary>
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/// Name of the submit button.
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/// </summary>
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[SerializeField]
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private string m_SubmitButton = "Submit";
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/// <summary>
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/// Name of the submit button.
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/// </summary>
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[SerializeField]
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private string m_CancelButton = "Cancel";
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[SerializeField]
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private float m_InputActionsPerSecond = 10;
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[SerializeField]
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private bool m_AllowActivationOnMobileDevice;
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public bool allowActivationOnMobileDevice
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{
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get { return m_AllowActivationOnMobileDevice; }
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set { m_AllowActivationOnMobileDevice = value; }
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}
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public float inputActionsPerSecond
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{
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get { return m_InputActionsPerSecond; }
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set { m_InputActionsPerSecond = value; }
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}
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/// <summary>
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/// Name of the horizontal axis for movement (if axis events are used).
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/// </summary>
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public string horizontalAxis
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{
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get { return m_HorizontalAxis; }
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set { m_HorizontalAxis = value; }
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}
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/// <summary>
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/// Name of the vertical axis for movement (if axis events are used).
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/// </summary>
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public string verticalAxis
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{
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get { return m_VerticalAxis; }
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set { m_VerticalAxis = value; }
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}
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public string submitButton
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{
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get { return m_SubmitButton; }
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set { m_SubmitButton = value; }
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}
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public string cancelButton
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{
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get { return m_CancelButton; }
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set { m_CancelButton = value; }
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}
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public override void UpdateModule()
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{
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m_LastMousePosition = m_MousePosition;
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m_MousePosition = Input.mousePosition;
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}
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public override bool IsModuleSupported()
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{
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// Check for mouse presence instead of whether touch is supported,
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// as you can connect mouse to a tablet and in that case we'd want
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// to use StandaloneInputModule for non-touch input events.
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return m_AllowActivationOnMobileDevice || Input.mousePresent;
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}
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public override bool ShouldActivateModule()
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{
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if (!base.ShouldActivateModule())
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return false;
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var shouldActivate = Input.GetButtonDown(m_SubmitButton);
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shouldActivate |= Input.GetButtonDown(m_CancelButton);
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shouldActivate |= !Mathf.Approximately(Input.GetAxisRaw(m_HorizontalAxis), 0.0f);
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shouldActivate |= !Mathf.Approximately(Input.GetAxisRaw(m_VerticalAxis), 0.0f);
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shouldActivate |= (m_MousePosition - m_LastMousePosition).sqrMagnitude > 0.0f;
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shouldActivate |= Input.GetMouseButtonDown(0);
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return shouldActivate;
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}
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public override void ActivateModule()
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{
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base.ActivateModule();
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m_MousePosition = Input.mousePosition;
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m_LastMousePosition = Input.mousePosition;
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var toSelect = eventSystem.currentSelectedGameObject;
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if (toSelect == null)
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toSelect = eventSystem.firstSelectedGameObject;
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eventSystem.SetSelectedGameObject(toSelect, GetBaseEventData());
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}
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public override void DeactivateModule()
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{
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base.DeactivateModule();
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ClearSelection();
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}
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/// <summary>
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/// Process submit keys.
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/// </summary>
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private bool SendSubmitEventToSelectedObject()
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{
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if (eventSystem.currentSelectedGameObject == null)
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return false;
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var data = GetBaseEventData();
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if (Input.GetButtonDown(m_SubmitButton))
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ExecuteEvents.Execute(eventSystem.currentSelectedGameObject, data, ExecuteEvents.submitHandler);
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if (Input.GetButtonDown(m_CancelButton))
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ExecuteEvents.Execute(eventSystem.currentSelectedGameObject, data, ExecuteEvents.cancelHandler);
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return data.used;
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}
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private bool AllowMoveEventProcessing(float time)
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{
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bool allow = Input.GetButtonDown(m_HorizontalAxis);
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allow |= Input.GetButtonDown(m_VerticalAxis);
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allow |= (time > m_NextAction);
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return allow;
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}
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private Vector2 GetRawMoveVector()
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{
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Vector2 move = Vector2.zero;
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move.x = Input.GetAxisRaw(m_HorizontalAxis);
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move.y = Input.GetAxisRaw(m_VerticalAxis);
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if (Input.GetButtonDown(m_HorizontalAxis))
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{
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if (move.x < 0)
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move.x = -1f;
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if (move.x > 0)
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move.x = 1f;
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}
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if (Input.GetButtonDown(m_VerticalAxis))
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{
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if (move.y < 0)
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move.y = -1f;
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if (move.y > 0)
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move.y = 1f;
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}
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return move;
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}
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/// <summary>
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/// Process keyboard events.
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/// </summary>
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private bool SendMoveEventToSelectedObject()
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{
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float time = Time.unscaledTime;
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if (!AllowMoveEventProcessing(time))
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return false;
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Vector2 movement = GetRawMoveVector();
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// Debug.Log(m_ProcessingEvent.rawType + " axis:" + m_AllowAxisEvents + " value:" + "(" + x + "," + y + ")");
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var axisEventData = GetAxisEventData(movement.x, movement.y, 0.6f);
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if (!Mathf.Approximately(axisEventData.moveVector.x, 0f)
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|| !Mathf.Approximately(axisEventData.moveVector.y, 0f))
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{
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ExecuteEvents.Execute(eventSystem.currentSelectedGameObject, axisEventData, ExecuteEvents.moveHandler);
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}
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m_NextAction = time + 1f / m_InputActionsPerSecond;
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return axisEventData.used;
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}
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private bool SendUpdateEventToSelectedObject()
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{
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if (eventSystem.currentSelectedGameObject == null)
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return false;
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var data = GetBaseEventData();
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ExecuteEvents.Execute(eventSystem.currentSelectedGameObject, data, ExecuteEvents.updateSelectedHandler);
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return data.used;
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}
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/// <summary>
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/// Process the current mouse press.
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/// </summary>
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private void ProcessMousePress(MouseButtonEventData data)
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{
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var pointerEvent = data.buttonData;
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var currentOverGo = pointerEvent.pointerCurrentRaycast.gameObject;
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// PointerDown notification
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if (data.PressedThisFrame())
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{
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pointerEvent.eligibleForClick = true;
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pointerEvent.delta = Vector2.zero;
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pointerEvent.dragging = false;
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pointerEvent.useDragThreshold = true;
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pointerEvent.pressPosition = pointerEvent.position;
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if (pointerEvent.IsVRPointer())
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{
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pointerEvent.SetSwipeStart(Input.mousePosition);
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}
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pointerEvent.pointerPressRaycast = pointerEvent.pointerCurrentRaycast;
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DeselectIfSelectionChanged(currentOverGo, pointerEvent);
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// search for the control that will receive the press
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// if we can't find a press handler set the press
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// handler to be what would receive a click.
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var newPressed = ExecuteEvents.ExecuteHierarchy(currentOverGo, pointerEvent, ExecuteEvents.pointerDownHandler);
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// didnt find a press handler... search for a click handler
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if (newPressed == null)
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newPressed = ExecuteEvents.GetEventHandler<IPointerClickHandler>(currentOverGo);
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// Debug.Log("Pressed: " + newPressed);
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float time = Time.unscaledTime;
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if (newPressed == pointerEvent.lastPress)
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{
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var diffTime = time - pointerEvent.clickTime;
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if (diffTime < 0.3f)
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++pointerEvent.clickCount;
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else
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pointerEvent.clickCount = 1;
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pointerEvent.clickTime = time;
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}
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else
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{
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pointerEvent.clickCount = 1;
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}
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pointerEvent.pointerPress = newPressed;
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pointerEvent.rawPointerPress = currentOverGo;
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pointerEvent.clickTime = time;
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// Save the drag handler as well
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pointerEvent.pointerDrag = ExecuteEvents.GetEventHandler<IDragHandler>(currentOverGo);
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if (pointerEvent.pointerDrag != null)
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ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.initializePotentialDrag);
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}
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// PointerUp notification
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if (data.ReleasedThisFrame())
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{
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// Debug.Log("Executing pressup on: " + pointer.pointerPress);
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ExecuteEvents.Execute(pointerEvent.pointerPress, pointerEvent, ExecuteEvents.pointerUpHandler);
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// Debug.Log("KeyCode: " + pointer.eventData.keyCode);
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// see if we mouse up on the same element that we clicked on...
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var pointerUpHandler = ExecuteEvents.GetEventHandler<IPointerClickHandler>(currentOverGo);
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// PointerClick and Drop events
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if (pointerEvent.pointerPress == pointerUpHandler && pointerEvent.eligibleForClick)
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{
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ExecuteEvents.Execute(pointerEvent.pointerPress, pointerEvent, ExecuteEvents.pointerClickHandler);
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}
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else if (pointerEvent.pointerDrag != null)
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{
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ExecuteEvents.ExecuteHierarchy(currentOverGo, pointerEvent, ExecuteEvents.dropHandler);
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}
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pointerEvent.eligibleForClick = false;
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pointerEvent.pointerPress = null;
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pointerEvent.rawPointerPress = null;
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if (pointerEvent.pointerDrag != null && pointerEvent.dragging)
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ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.endDragHandler);
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pointerEvent.dragging = false;
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pointerEvent.pointerDrag = null;
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// redo pointer enter / exit to refresh state
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// so that if we moused over somethign that ignored it before
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// due to having pressed on something else
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// it now gets it.
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if (currentOverGo != pointerEvent.pointerEnter)
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{
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HandlePointerExitAndEnter(pointerEvent, null);
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HandlePointerExitAndEnter(pointerEvent, currentOverGo);
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}
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}
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}
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#endregion
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#region Modified StandaloneInputModule methods
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/// <summary>
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/// Process all mouse events. This is the same as the StandaloneInputModule version except that
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/// it takes MouseState as a parameter, allowing it to be used for both Gaze and Mouse
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/// pointerss.
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/// </summary>
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private void ProcessMouseEvent(MouseState mouseData)
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{
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var pressed = mouseData.AnyPressesThisFrame();
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var released = mouseData.AnyReleasesThisFrame();
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var leftButtonData = mouseData.GetButtonState(PointerEventData.InputButton.Left).eventData;
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if (!UseMouse(pressed, released, leftButtonData.buttonData))
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return;
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// Process the first mouse button fully
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ProcessMousePress(leftButtonData);
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ProcessMove(leftButtonData.buttonData);
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ProcessDrag(leftButtonData.buttonData);
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// Now process right / middle clicks
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ProcessMousePress(mouseData.GetButtonState(PointerEventData.InputButton.Right).eventData);
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ProcessDrag(mouseData.GetButtonState(PointerEventData.InputButton.Right).eventData.buttonData);
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ProcessMousePress(mouseData.GetButtonState(PointerEventData.InputButton.Middle).eventData);
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ProcessDrag(mouseData.GetButtonState(PointerEventData.InputButton.Middle).eventData.buttonData);
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if (!Mathf.Approximately(leftButtonData.buttonData.scrollDelta.sqrMagnitude, 0.0f))
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{
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var scrollHandler = ExecuteEvents.GetEventHandler<IScrollHandler>(leftButtonData.buttonData.pointerCurrentRaycast.gameObject);
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ExecuteEvents.ExecuteHierarchy(scrollHandler, leftButtonData.buttonData, ExecuteEvents.scrollHandler);
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}
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}
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/// <summary>
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/// Process this InputModule. Same as the StandaloneInputModule version, except that it calls
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/// ProcessMouseEvent twice, once for gaze pointers, and once for mouse pointers.
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/// </summary>
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public override void Process()
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{
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bool usedEvent = SendUpdateEventToSelectedObject();
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if (eventSystem.sendNavigationEvents)
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{
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if (!usedEvent)
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usedEvent |= SendMoveEventToSelectedObject();
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if (!usedEvent)
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SendSubmitEventToSelectedObject();
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}
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ProcessMouseEvent(GetGazePointerData());
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#if !UNITY_ANDROID
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ProcessMouseEvent(GetCanvasPointerData());
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#endif
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}
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/// <summary>
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/// Decide if mouse events need to be processed this frame. Same as StandloneInputModule except
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/// that the IsPointerMoving method from this class is used, instead of the method on PointerEventData
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/// </summary>
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private static bool UseMouse(bool pressed, bool released, PointerEventData pointerData)
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{
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if (pressed || released || IsPointerMoving(pointerData) || pointerData.IsScrolling())
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return true;
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return false;
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}
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#endregion
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/// <summary>
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/// Convenience function for cloning PointerEventData
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/// </summary>
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/// <param name="from">Copy this value</param>
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/// <param name="to">to this object</param>
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protected void CopyFromTo(OVRPointerEventData @from, OVRPointerEventData @to)
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{
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@to.position = @from.position;
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@to.delta = @from.delta;
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@to.scrollDelta = @from.scrollDelta;
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@to.pointerCurrentRaycast = @from.pointerCurrentRaycast;
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@to.pointerEnter = @from.pointerEnter;
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@to.worldSpaceRay = @from.worldSpaceRay;
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}
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/// <summary>
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/// Convenience function for cloning PointerEventData
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/// </summary>
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/// <param name="from">Copy this value</param>
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/// <param name="to">to this object</param>
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protected new void CopyFromTo(PointerEventData @from, PointerEventData @to)
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{
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@to.position = @from.position;
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@to.delta = @from.delta;
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@to.scrollDelta = @from.scrollDelta;
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@to.pointerCurrentRaycast = @from.pointerCurrentRaycast;
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@to.pointerEnter = @from.pointerEnter;
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}
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// In the following region we extend the PointerEventData system implemented in PointerInputModule
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// We define an additional dictionary for ray(e.g. gaze) based pointers. Mouse pointers still use the dictionary
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// in PointerInputModule
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#region PointerEventData pool
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// Pool for OVRRayPointerEventData for ray based pointers
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protected Dictionary<int, OVRPointerEventData> m_VRRayPointerData = new Dictionary<int, OVRPointerEventData>();
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protected bool GetPointerData(int id, out OVRPointerEventData data, bool create)
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{
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if (!m_VRRayPointerData.TryGetValue(id, out data) && create)
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{
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data = new OVRPointerEventData(eventSystem)
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|
{
|
|
pointerId = id,
|
|
};
|
|
|
|
m_VRRayPointerData.Add(id, data);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Clear pointer state for both types of pointer
|
|
/// </summary>
|
|
protected new void ClearSelection()
|
|
{
|
|
var baseEventData = GetBaseEventData();
|
|
|
|
foreach (var pointer in m_PointerData.Values)
|
|
{
|
|
// clear all selection
|
|
HandlePointerExitAndEnter(pointer, null);
|
|
}
|
|
foreach (var pointer in m_VRRayPointerData.Values)
|
|
{
|
|
// clear all selection
|
|
HandlePointerExitAndEnter(pointer, null);
|
|
}
|
|
|
|
m_PointerData.Clear();
|
|
eventSystem.SetSelectedGameObject(null, baseEventData);
|
|
}
|
|
#endregion
|
|
|
|
/// <summary>
|
|
/// For RectTransform, calculate it's normal in world space
|
|
/// </summary>
|
|
static Vector3 GetRectTransformNormal(RectTransform rectTransform)
|
|
{
|
|
Vector3[] corners = new Vector3[4];
|
|
rectTransform.GetWorldCorners(corners);
|
|
Vector3 BottomEdge = corners[3] - corners[0];
|
|
Vector3 LeftEdge = corners[1] - corners[0];
|
|
rectTransform.GetWorldCorners(corners);
|
|
return Vector3.Cross(BottomEdge, LeftEdge).normalized;
|
|
}
|
|
|
|
private readonly MouseState m_MouseState = new MouseState();
|
|
|
|
|
|
// The following 2 functions are equivalent to PointerInputModule.GetMousePointerEventData but are customized to
|
|
// get data for ray pointers and canvas mouse pointers.
|
|
|
|
/// <summary>
|
|
/// State for a pointer controlled by a world space ray. E.g. gaze pointer
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
virtual protected MouseState GetGazePointerData()
|
|
{
|
|
// Get the OVRRayPointerEventData reference
|
|
OVRPointerEventData leftData;
|
|
GetPointerData(kMouseLeftId, out leftData, true );
|
|
leftData.Reset();
|
|
|
|
//Now set the world space ray. This ray is what the user uses to point at UI elements
|
|
leftData.worldSpaceRay = new Ray(rayTransform.position, rayTransform.forward);
|
|
leftData.scrollDelta = GetExtraScrollDelta();
|
|
|
|
//Populate some default values
|
|
leftData.button = PointerEventData.InputButton.Left;
|
|
leftData.useDragThreshold = true;
|
|
// Perform raycast to find intersections with world
|
|
eventSystem.RaycastAll(leftData, m_RaycastResultCache);
|
|
var raycast = FindFirstRaycast(m_RaycastResultCache);
|
|
leftData.pointerCurrentRaycast = raycast;
|
|
m_RaycastResultCache.Clear();
|
|
|
|
OVRRaycaster ovrRaycaster = raycast.module as OVRRaycaster;
|
|
// We're only interested in intersections from OVRRaycasters
|
|
if (ovrRaycaster)
|
|
{
|
|
// The Unity UI system expects event data to have a screen position
|
|
// so even though this raycast came from a world space ray we must get a screen
|
|
// space position for the camera attached to this raycaster for compatability
|
|
leftData.position = ovrRaycaster.GetScreenPosition(raycast);
|
|
|
|
|
|
// Find the world position and normal the Graphic the ray intersected
|
|
RectTransform graphicRect = raycast.gameObject.GetComponent<RectTransform>();
|
|
if (graphicRect != null)
|
|
{
|
|
// Set are gaze indicator with this world position and normal
|
|
Vector3 worldPos = raycast.worldPosition;
|
|
Vector3 normal = GetRectTransformNormal(graphicRect);
|
|
OVRGazePointer.instance.SetPosition(worldPos, normal);
|
|
// Make sure it's being shown
|
|
OVRGazePointer.instance.RequestShow();
|
|
}
|
|
}
|
|
|
|
// Now process physical raycast intersections
|
|
OVRPhysicsRaycaster physicsRaycaster = raycast.module as OVRPhysicsRaycaster;
|
|
if (physicsRaycaster)
|
|
{
|
|
Vector3 position = raycast.worldPosition;
|
|
|
|
if (performSphereCastForGazepointer)
|
|
{
|
|
// Here we cast a sphere into the scene rather than a ray. This gives a more accurate depth
|
|
// for positioning a circular gaze pointer
|
|
List<RaycastResult> results = new List<RaycastResult>();
|
|
physicsRaycaster.Spherecast(leftData, results, OVRGazePointer.instance.GetCurrentRadius());
|
|
if (results.Count > 0 && results[0].distance < raycast.distance)
|
|
{
|
|
position = results[0].worldPosition;
|
|
}
|
|
}
|
|
|
|
leftData.position = physicsRaycaster.GetScreenPos(raycast.worldPosition);
|
|
|
|
// Show the cursor while pointing at an interactable object
|
|
OVRGazePointer.instance.RequestShow();
|
|
if (matchNormalOnPhysicsColliders)
|
|
{
|
|
OVRGazePointer.instance.SetPosition(position, raycast.worldNormal);
|
|
}
|
|
else
|
|
{
|
|
OVRGazePointer.instance.SetPosition(position);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
// Stick default data values in right and middle slots for compatability
|
|
|
|
// copy the apropriate data into right and middle slots
|
|
OVRPointerEventData rightData;
|
|
GetPointerData(kMouseRightId, out rightData, true );
|
|
CopyFromTo(leftData, rightData);
|
|
rightData.button = PointerEventData.InputButton.Right;
|
|
|
|
OVRPointerEventData middleData;
|
|
GetPointerData(kMouseMiddleId, out middleData, true );
|
|
CopyFromTo(leftData, middleData);
|
|
middleData.button = PointerEventData.InputButton.Middle;
|
|
|
|
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Left, GetGazeButtonState(), leftData);
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Right, PointerEventData.FramePressState.NotChanged, rightData);
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Middle, PointerEventData.FramePressState.NotChanged, middleData);
|
|
return m_MouseState;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get state for pointer which is a pointer moving in world space across the surface of a world space canvas.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
protected MouseState GetCanvasPointerData()
|
|
{
|
|
// Get the OVRRayPointerEventData reference
|
|
PointerEventData leftData;
|
|
GetPointerData(kMouseLeftId, out leftData, true );
|
|
leftData.Reset();
|
|
|
|
// Setup default values here. Set position to zero because we don't actually know the pointer
|
|
// positions. Each canvas knows the position of its canvas pointer.
|
|
leftData.position = Vector2.zero;
|
|
leftData.scrollDelta = Input.mouseScrollDelta;
|
|
leftData.button = PointerEventData.InputButton.Left;
|
|
|
|
if (activeGraphicRaycaster)
|
|
{
|
|
// Let the active raycaster find intersections on its canvas
|
|
activeGraphicRaycaster.RaycastPointer(leftData, m_RaycastResultCache);
|
|
var raycast = FindFirstRaycast(m_RaycastResultCache);
|
|
leftData.pointerCurrentRaycast = raycast;
|
|
m_RaycastResultCache.Clear();
|
|
|
|
OVRRaycaster ovrRaycaster = raycast.module as OVRRaycaster;
|
|
if (ovrRaycaster) // raycast may not actually contain a result
|
|
{
|
|
// The Unity UI system expects event data to have a screen position
|
|
// so even though this raycast came from a world space ray we must get a screen
|
|
// space position for the camera attached to this raycaster for compatability
|
|
Vector2 position = ovrRaycaster.GetScreenPosition(raycast);
|
|
|
|
leftData.delta = position - leftData.position;
|
|
leftData.position = position;
|
|
}
|
|
}
|
|
|
|
// copy the apropriate data into right and middle slots
|
|
PointerEventData rightData;
|
|
GetPointerData(kMouseRightId, out rightData, true );
|
|
CopyFromTo(leftData, rightData);
|
|
rightData.button = PointerEventData.InputButton.Right;
|
|
|
|
PointerEventData middleData;
|
|
GetPointerData(kMouseMiddleId, out middleData, true );
|
|
CopyFromTo(leftData, middleData);
|
|
middleData.button = PointerEventData.InputButton.Middle;
|
|
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Left, StateForMouseButton(0), leftData);
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Right, StateForMouseButton(1), rightData);
|
|
m_MouseState.SetButtonState(PointerEventData.InputButton.Middle, StateForMouseButton(2), middleData);
|
|
return m_MouseState;
|
|
}
|
|
|
|
/// <summary>
|
|
/// New version of ShouldStartDrag implemented first in PointerInputModule. This version differs in that
|
|
/// for ray based pointers it makes a decision about whether a drag should start based on the angular change
|
|
/// the pointer has made so far, as seen from the camera. This also works when the world space ray is
|
|
/// translated rather than rotated, since the beginning and end of the movement are considered as angle from
|
|
/// the same point.
|
|
/// </summary>
|
|
private bool ShouldStartDrag(PointerEventData pointerEvent)
|
|
{
|
|
if (!pointerEvent.useDragThreshold)
|
|
return true;
|
|
|
|
if (!pointerEvent.IsVRPointer())
|
|
{
|
|
// Same as original behaviour for canvas based pointers
|
|
return (pointerEvent.pressPosition - pointerEvent.position).sqrMagnitude >= eventSystem.pixelDragThreshold * eventSystem.pixelDragThreshold;
|
|
}
|
|
else
|
|
{
|
|
#if UNITY_ANDROID && !UNITY_EDITOR // On android allow swiping to start drag
|
|
if (useSwipeScroll && ((Vector3)pointerEvent.GetSwipeStart() - Input.mousePosition).magnitude > swipeDragThreshold)
|
|
{
|
|
return true;
|
|
}
|
|
#endif
|
|
// When it's not a screen space pointer we have to look at the angle it moved rather than the pixels distance
|
|
// For gaze based pointing screen-space distance moved will always be near 0
|
|
Vector3 cameraPos = pointerEvent.pressEventCamera.transform.position;
|
|
Vector3 pressDir = (pointerEvent.pointerPressRaycast.worldPosition - cameraPos).normalized;
|
|
Vector3 currentDir = (pointerEvent.pointerCurrentRaycast.worldPosition - cameraPos).normalized;
|
|
return Vector3.Dot(pressDir, currentDir) < Mathf.Cos(Mathf.Deg2Rad * (angleDragThreshold));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// The purpose of this function is to allow us to switch between using the standard IsPointerMoving
|
|
/// method for mouse driven pointers, but to always return true when it's a ray based pointer.
|
|
/// All real-world ray-based input devices are always moving so for simplicity we just return true
|
|
/// for them.
|
|
///
|
|
/// If PointerEventData.IsPointerMoving was virtual we could just override that in
|
|
/// OVRRayPointerEventData.
|
|
/// </summary>
|
|
/// <param name="pointerEvent"></param>
|
|
/// <returns></returns>
|
|
static bool IsPointerMoving(PointerEventData pointerEvent)
|
|
{
|
|
if (pointerEvent.IsVRPointer())
|
|
return true;
|
|
else
|
|
return pointerEvent.IsPointerMoving();
|
|
}
|
|
|
|
protected Vector2 SwipeAdjustedPosition(Vector2 originalPosition, PointerEventData pointerEvent)
|
|
{
|
|
#if UNITY_ANDROID && !UNITY_EDITOR
|
|
// On android we use the touchpad position (accessed through Input.mousePosition) to modify
|
|
// the effective cursor position for events related to dragging. This allows the user to
|
|
// use the touchpad to drag draggable UI elements
|
|
if (useSwipeScroll)
|
|
{
|
|
Vector2 delta = (Vector2)Input.mousePosition - pointerEvent.GetSwipeStart();
|
|
if (InvertSwipeXAxis)
|
|
delta.x *= -1;
|
|
return originalPosition + delta * swipeDragScale;
|
|
}
|
|
#endif
|
|
// If not Gear VR or swipe scroll isn't enabled just return original position
|
|
return originalPosition;
|
|
|
|
}
|
|
|
|
/// <summary>
|
|
/// Exactly the same as the code from PointerInputModule, except that we call our own
|
|
/// IsPointerMoving.
|
|
///
|
|
/// This would also not be necessary if PointerEventData.IsPointerMoving was virtual
|
|
/// </summary>
|
|
/// <param name="pointerEvent"></param>
|
|
protected override void ProcessDrag(PointerEventData pointerEvent)
|
|
{
|
|
Vector2 originalPosition = pointerEvent.position;
|
|
bool moving = IsPointerMoving(pointerEvent);
|
|
if (moving && pointerEvent.pointerDrag != null
|
|
&& !pointerEvent.dragging
|
|
&& ShouldStartDrag(pointerEvent))
|
|
{
|
|
if (pointerEvent.IsVRPointer())
|
|
{
|
|
//adjust the position used based on swiping action. Allowing the user to
|
|
//drag items by swiping on the GearVR touchpad
|
|
pointerEvent.position = SwipeAdjustedPosition (originalPosition, pointerEvent);
|
|
}
|
|
ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.beginDragHandler);
|
|
pointerEvent.dragging = true;
|
|
}
|
|
|
|
// Drag notification
|
|
if (pointerEvent.dragging && moving && pointerEvent.pointerDrag != null)
|
|
{
|
|
if (pointerEvent.IsVRPointer())
|
|
{
|
|
pointerEvent.position = SwipeAdjustedPosition(originalPosition, pointerEvent);
|
|
}
|
|
// Before doing drag we should cancel any pointer down state
|
|
// And clear selection!
|
|
if (pointerEvent.pointerPress != pointerEvent.pointerDrag)
|
|
{
|
|
ExecuteEvents.Execute(pointerEvent.pointerPress, pointerEvent, ExecuteEvents.pointerUpHandler);
|
|
|
|
pointerEvent.eligibleForClick = false;
|
|
pointerEvent.pointerPress = null;
|
|
pointerEvent.rawPointerPress = null;
|
|
}
|
|
ExecuteEvents.Execute(pointerEvent.pointerDrag, pointerEvent, ExecuteEvents.dragHandler);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get state of button corresponding to gaze pointer
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
virtual protected PointerEventData.FramePressState GetGazeButtonState()
|
|
{
|
|
var pressed = Input.GetKeyDown(gazeClickKey) || OVRInput.GetDown(joyPadClickButton);
|
|
var released = Input.GetKeyUp(gazeClickKey) || OVRInput.GetUp(joyPadClickButton);
|
|
|
|
#if UNITY_ANDROID && !UNITY_EDITOR
|
|
// On Gear VR the mouse button events correspond to touch pad events. We only use these as gaze pointer clicks
|
|
// on Gear VR because on PC the mouse clicks are used for actual mouse pointer interactions.
|
|
pressed |= Input.GetMouseButtonDown(0);
|
|
released |= Input.GetMouseButtonUp(0);
|
|
#endif
|
|
|
|
if (pressed && released)
|
|
return PointerEventData.FramePressState.PressedAndReleased;
|
|
if (pressed)
|
|
return PointerEventData.FramePressState.Pressed;
|
|
if (released)
|
|
return PointerEventData.FramePressState.Released;
|
|
return PointerEventData.FramePressState.NotChanged;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get extra scroll delta from gamepad
|
|
/// </summary>
|
|
protected Vector2 GetExtraScrollDelta()
|
|
{
|
|
Vector2 scrollDelta = new Vector2();
|
|
if (useRightStickScroll)
|
|
{
|
|
Vector2 s = OVRInput.Get(OVRInput.Axis2D.SecondaryThumbstick);
|
|
if (Mathf.Abs(s.x) < rightStickDeadZone) s.x = 0;
|
|
if (Mathf.Abs(s.y) < rightStickDeadZone) s.y = 0;
|
|
scrollDelta = s;
|
|
}
|
|
return scrollDelta;
|
|
}
|
|
};
|
|
}
|