/*==============================================================================
Copyright (c) 2010-2014 Qualcomm Connected Experiences, Inc.
All Rights Reserved.
Confidential and Proprietary - Protected under copyright and other laws.
==============================================================================*/
using System.Collections.Generic;
using UnityEngine;
namespace Vuforia
{
///
/// A custom handler that implements the ITrackableEventHandler interface.
///
public class TrackableEventHandlerCorrected : MonoBehaviour,
ITrackableEventHandler
{
#region PRIVATE_MEMBER_VARIABLES
private TrackableBehaviour mTrackableBehaviour;
private Dictionary savedScales = new Dictionary();
private Dictionary savedLocalPos = new Dictionary();
private Vector3 savedScale;
private float scalePercentage = 0.14f;
#endregion // PRIVATE_MEMBER_VARIABLES
public GameObject targetObject;
public LayerMask mask;
#region UNTIY_MONOBEHAVIOUR_METHODS
void Start()
{
mTrackableBehaviour = GetComponent();
if (mTrackableBehaviour)
{
mTrackableBehaviour.RegisterTrackableEventHandler(this);
}
// saving local scale for target object (parent of all components)
savedScale = targetObject.transform.localScale;
Renderer[] rendererComponents = GetComponentsInChildren(true);
foreach (Renderer component in rendererComponents)
{
// saving local scale for every component
savedScales[component] = component.transform.localScale;
// saving local position for every component
savedLocalPos[component] = component.transform.localPosition;
}
}
#endregion // UNTIY_MONOBEHAVIOUR_METHODS
#region PUBLIC_METHODS
///
/// Implementation of the ITrackableEventHandler function called when the
/// tracking state changes.
///
public void OnTrackableStateChanged(
TrackableBehaviour.Status previousStatus,
TrackableBehaviour.Status newStatus)
{
if (newStatus == TrackableBehaviour.Status.DETECTED ||
newStatus == TrackableBehaviour.Status.TRACKED ||
newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)
{
OnTrackingFound();
}
else
{
OnTrackingLost();
}
if (newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED && targetObject != null)
{
Vector3 cameraPos = Camera.main.transform.position;
Vector3 objectPos = targetObject.transform.position;
Vector3 direction = targetObject.transform.position - cameraPos;
RaycastHit hitInfo;
// trying to hit the spatial mapping surfacing (note the inverted layer mask here)
if (Physics.Raycast(cameraPos, direction, out hitInfo, Mathf.Infinity, ~mask.value, QueryTriggerInteraction.UseGlobal))
{
Renderer[] rendererComponents = GetComponentsInChildren(true);
foreach (Renderer component in rendererComponents)
{
// restore saved local scale and saved local position
component.transform.localScale = savedScales[component];
component.transform.localPosition = savedLocalPos[component];
// setting the local scale according to the new distance
component.transform.localScale = component.transform.localScale * scalePercentage;
// setting the component to the hit point and correcting for components pivot position (assumed to be in center of component)
// Note: changing pivot of component is no option since Vuforia assumes it to be in center
component.transform.position = hitInfo.point;
// correcting constant z-axis offset
component.transform.localPosition = component.transform.localPosition + new Vector3(0, 0, 0.03f);
// correcting for components pivot position
component.transform.localPosition = component.transform.localPosition + savedLocalPos[component] * scalePercentage;
}
}
else
{
Debug.Log("NO HIT FOR RAYCAST!");
}
}
}
#endregion // PUBLIC_METHODS
#region PRIVATE_METHODS
private void OnTrackingFound()
{
Renderer[] rendererComponents = GetComponentsInChildren(true);
Collider[] colliderComponents = GetComponentsInChildren(true);
// Enable rendering:
foreach (Renderer component in rendererComponents)
{
component.enabled = true;
}
// Enable colliders:
foreach (Collider component in colliderComponents)
{
component.enabled = true;
}
Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " found");
}
private void OnTrackingLost()
{
Renderer[] rendererComponents = GetComponentsInChildren(true);
Collider[] colliderComponents = GetComponentsInChildren(true);
// Disable rendering:
foreach (Renderer component in rendererComponents)
{
component.enabled = false;
}
// Disable colliders:
foreach (Collider component in colliderComponents)
{
component.enabled = false;
}
Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " lost");
}
#endregion // PRIVATE_METHODS
}
}