void OnDisable()
{
// Is there a current target?
if (currentTarget != null)
{
currentTarget.OnGazeExit();
}
// Tell pointer to exit target.
if (pointer != null)
{
// Is there a pending trigger?
if (isTriggered)
{
pointer.OnGazeTriggerEnd(cam);
}
if (currentGazeObject != null)
{
pointer.OnGazeExit(cam, currentGazeObject);
}
pointer.OnGazeDisabled();
}
currentGazeObject = null;
currentTarget = null;
isTriggered = false;
}
private GameObject FindGazeTarget(float radius, out INvrGazeResponder responder,
out Vector3 intersectPosition)
{
RaycastHit hit;
GameObject targetObject = null;
bool hitResult = false;
// Use Raycast or SphereCast?
if (radius > 0.0f)
{
// Cast a sphere against the scene.
hitResult = Physics.SphereCast(transform.position,
radius, transform.forward, out hit, cam.farClipPlane, mask);
}
else
{
// Cast a Ray against the scene.
Ray ray = new Ray(transform.position, transform.forward);
hitResult = Physics.Raycast(ray, out hit, cam.farClipPlane, mask);
}
// Found anything?
if (hitResult)
{
// Set object and INvrGazeResponder if any.
targetObject = hit.collider.gameObject;
responder = targetObject.GetComponent(typeof(INvrGazeResponder))
as INvrGazeResponder;
intersectPosition = transform.position + transform.forward * hit.distance;
}
else
{
// Nothing? Reset variables.
intersectPosition = Vector3.zero;
responder = null;
}
return(targetObject);
}
private void HandleGaze()
{
// Retrieve GazePointer radius.
float innerRadius = 0.0f;
float outerRadius = 0.0f;
if (pointer != null)
{
pointer.GetPointerRadius(out innerRadius, out outerRadius);
}
// Find what object the user is looking at.
Vector3 intersectPosition;
INvrGazeResponder target = null;
GameObject targetObject = FindGazeTarget(innerRadius, out target, out intersectPosition);
// Found a target?
if (targetObject != null)
{
lastIntersectPosition = intersectPosition;
// Is the object new?
if (targetObject != currentGazeObject)
{
if (pointer != null)
{
pointer.OnGazeExit(cam, currentGazeObject);
}
if (currentTarget != null)
{
// Replace with current object.
currentTarget.OnGazeExit();
}
// Save new object.
currentTarget = target;
currentGazeObject = targetObject;
// Inform pointer and target of gaze.
if (pointer != null)
{
pointer.OnGazeStart(cam, currentGazeObject, intersectPosition,
currentTarget != null);
}
if (currentTarget != null)
{
currentTarget.OnGazeEnter();
}
}
else
{
// Same object, inform pointer of new intersection.
if (pointer != null)
{
pointer.OnGazeStay(cam, currentGazeObject, intersectPosition,
currentTarget != null);
}
}
}
else
{
// Failed to find an object by inner radius.
if (currentGazeObject != null)
{
// Already gazing an object? Check against outer radius.
if (IsGazeNearObject(outerRadius, currentGazeObject, out intersectPosition))
{
// Still gazing.
if (pointer != null)
{
pointer.OnGazeStay(cam, currentGazeObject, intersectPosition, currentTarget != null);
}
}
else
{
// No longer gazing any object.
if (pointer != null)
{
pointer.OnGazeExit(cam, currentGazeObject);
}
if (currentTarget != null)
{
currentTarget.OnGazeExit();
}
currentTarget = null;
currentGazeObject = null;
}
}
}
}
