所以我想检查节点是否在某个范围内,如果是,请绘制它们。在计时器内检查节点,因此创建一个线程。现在只发布是必须从UI线程调用方法setRenderable()。有没有办法绕过那个?我需要在某个时间间隔更新,这就是我创建计时器的原因。
public void updateNodes()
{
Camera camera = arFragment.getArSceneView().getScene().getCamera();
timer = new Timer();
timer.schedule(new TimerTask(){
int last = 0;
int copy_last = 0;
@Override
public void run(){
Vector3 camera_position = camera.getWorldPosition();
// We're checking all nodes for distance between them
for(Node al : copied_nodes_list){
if(last<copy_last) last++;
else if(countDistanceOfNodes(al,camera_position)<3.0 && copy_last >= last) {
al.setRenderable(andyRenderable);
last++;
copy_last = last;
}
else {
al.setRenderable(andyRenderable);
}
}
last = 0;
}
},0,250);
}
好的,所以在android中有一个名为runOnUiThread()的函数;这基本上是什么,它被称为。我附上了工作代码。
public void updateNodes()
{
Camera camera = arFragment.getArSceneView().getScene().getCamera();
Timer timer = new Timer();
timer.schedule(new TimerTask(){
int last = 0;
int copy_last = 0;
@Override
public void run(){
Vector3 camera_position = camera.getWorldPosition();
// We're checking all nodes for distance between them
for(Node al : copied_nodes_list){
camera_position = camera.getWorldPosition();
if(last<copy_last) last++;
else if(countDistanceOfNodes(al,camera_position)<3.0 && copy_last >= last) {
runOnUiThread(new Runnable(){
@Override
public void run(){
al.setRenderable(andyRenderable);
}
});
last++;
copy_last = last;
}
else {
runOnUiThread(new Runnable(){
@Override
public void run(){
al.setRenderable(null);
}
});
}
}
last = 0;
}
},0,100);
}