/// <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 OSVRRayPointerEventData 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();
OSVRRaycaster osvrRaycaster = raycast.module as OSVRRaycaster;
if (osvrRaycaster) // 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 = osvrRaycaster.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);
}
// Overridden so that we can process the two types of pointer separately
// 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>
protected MouseState GetGazePointerData()
{
// Get the OSVRRayPointerEventData reference
OSVRRayPointerEventData 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();
OSVRRaycaster osvrRaycaster = raycast.module as OSVRRaycaster;
// We're only interested in intersections from OSVRRaycasters
if (osvrRaycaster)
{
// 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 = osvrRaycaster.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);
OSVRGazePointer.instance.SetPosition(worldPos, normal);
// Make sure it's being shown
OSVRGazePointer.instance.RequestShow();
}
}
OSVRPhysicsRaycaster physicsRaycaster = raycast.module as OSVRPhysicsRaycaster;
if (physicsRaycaster)
{
leftData.position = physicsRaycaster.GetScreenPos(raycast.worldPosition);
OSVRGazePointer.instance.RequestShow();
OSVRGazePointer.instance.SetPosition(raycast.worldPosition, raycast.worldNormal);
}
// Stick default data values in right and middle slots for compatability
// copy the apropriate data into right and middle slots
OSVRRayPointerEventData rightData;
GetPointerData(kMouseRightId, out rightData, true);
CopyFromTo(leftData, rightData);
rightData.button = PointerEventData.InputButton.Right;
OSVRRayPointerEventData 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);
}