/// <summary>
/// Function called when the manipulation is continued.
/// </summary>
/// <param name="gesture">The current gesture.</param>
protected virtual void OnContinueManipulation(TapGesture gesture)
{
// Optional override.
}
/// <summary>
/// Function called when the manipulation is started.
/// </summary>
/// <param name="gesture">The current gesture.</param>
protected virtual void OnStartManipulation(TapGesture gesture)
{
// Optional override.
}
/// <summary>
/// Returns true if the manipulation can be started for the given gesture.
/// </summary>
/// <param name="gesture">The current gesture.</param>
/// <returns>True if the manipulation can be started.</returns>
protected override bool CanStartManipulationForGesture(TapGesture gesture)
{
return(true);
}
/// <summary>
/// Function called when the manipulation is ended.
/// </summary>
/// <param name="gesture">The current gesture.</param>
protected override void OnEndManipulation(TapGesture gesture)
{
if (gesture.WasCancelled)
{
return;
}
// If gesture is targeting an existing object we are done.
if (gesture.TargetObject != null)
{
return;
}
// Raycast against the location the player touched to search for planes.
TrackableHit hit;
TrackableHitFlags raycastFilter = TrackableHitFlags.PlaneWithinPolygon;
if (Frame.Raycast(
gesture.StartPosition.x, gesture.StartPosition.y, raycastFilter, out hit))
{
// Use hit pose and camera pose to check if hittest is from the
// back of the plane, if it is, no need to create the anchor.
if ((hit.Trackable is DetectedPlane) &&
Vector3.Dot(FirstPersonCamera.transform.position - hit.Pose.position,
hit.Pose.rotation * Vector3.up) < 0)
{
Debug.Log("Hit at back of the current DetectedPlane");
}
else
{
ObjectToPlace = itemManager.ObjectToPlace;
// Instantiate model at the hit pose.
var modelObject = Instantiate(ObjectToPlace, hit.Pose.position, hit.Pose.rotation);
// Instantiate manipulator.
var manipulator =
Instantiate(ManipulatorPrefab, hit.Pose.position, hit.Pose.rotation);
// Make model a child of the manipulator.
modelObject.transform.parent = manipulator.transform;
// Create an anchor to allow ARCore to track the hitpoint as understanding of
// the physical world evolves.
var anchor = hit.Trackable.CreateAnchor(hit.Pose);
// Make manipulator a child of the anchor.
manipulator.transform.parent = anchor.transform;
// Select the placed object.
manipulator.GetComponent <Manipulator>().Select();
//Disable object placement after item placed.
GameObject manipulationPanel = GameObject.Find("Controls");
manipulationPanel.GetComponent <ManipulationButtons>().togglePlace = false;
PlacedObjects.Add(modelObject);
GameObject.Find("Controls").GetComponent <ManipulationButtons>().TogglePressedColour();
}
}
}
/// <summary>
/// Returns true if the manipulation can be started for the given gesture.
/// </summary>
/// <param name="gesture">The current gesture.</param>
/// <returns>True if the manipulation can be started.</returns>
protected virtual bool CanStartManipulationForGesture(TapGesture gesture)
{
return(false);
}
private void OnFinished(TapGesture gesture)
{
m_IsManipulating = false;
OnEndManipulation(gesture);
}
