In your removing the "pre-augmentations" you remove everything from the child of the target, but the Elephant is not the child of the Cow. Get a reference to the elephant and then you can either disable it with SetActive
or remove completely with Destroy
.
Swap 3D model using Vuforia and Unity
题
I am developing a Vuforia AR app using Unity 3D. I want to change the model being augmented with other based on a UI action.
Below code is working. See the attached screenshot. In chips target cow & elephant models are showing. I drag the ModelSwapper script to ARCamera and in Inspector view i choosed cow. When i run the app click the button the cow is gone. It's works fine. Second screenshot tarmac showing cow & elephant model. In inspector what should i do? I need to remove elephant while click the button. Is i need to create another script for tarmac?
using UnityEngine;
using System.Collections;
public class ModelSwapper : MonoBehaviour {
// public TrackableBehaviour theTrackable;
private GameObject theTrackable;
private GameObject cube;
private bool mSwapModel = false;
public Transform MyPrefab;
// Use this for initialization
void Start () {
theTrackable=GameObject.Find("Cow");
cube = GameObject.Find("Cow");
if (theTrackable == null)
{
Debug.Log ("Warning: Trackable not set !!");
}
}
// Update is called once per frame
void Update () {
if (mSwapModel && theTrackable != null) {
SwapModel();
mSwapModel = false;
}
}
void OnGUI() {
if (GUI.Button (new Rect(50,50,120,40), "Swap Model")) {
mSwapModel = true;
}
}
private void SwapModel()
{
GameObject trackableGameObject = theTrackable.gameObject;
//disable any pre-existing augmentation
for (int i = 0; i < trackableGameObject.transform.GetChildCount(); i++)
{
Transform child = trackableGameObject.transform.GetChild(i);
child.gameObject.active = false;
}
// Create a simple cube object
//GameObject model = GameObject.CreatePrimitive(PrimitiveType.Cube);
if (MyPrefab != null)
{
Transform model = GameObject.Instantiate(MyPrefab) as Transform;
// Re-parent the model as child of the trackable gameObject
model.parent = theTrackable.transform;
// Adjust the position and scale
// so that it fits nicely on the target
model.transform.localPosition = new Vector3(0,0.2f,0);
model.transform.localRotation = Quaternion.identity;//you might need to adjust the rotation
model.transform.localScale = new Vector3(0.01f, 0.01f, 0.01f);
// Make sure it is active
model.active = true;
}
}
}
解决方案
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