private void _DrawARLogo(Touch touch)
{
List <ARHitResult> hitResults = ARFrame.HitTest(touch);
ARHitResult hitResult = null;
ARTrackable trackable = null;
Boolean hasHitFlag = false;
ARDebug.LogInfo("_DrawARLogo hitResults count {0}", hitResults.Count);
foreach (ARHitResult singleHit in hitResults)
{
trackable = singleHit.GetTrackable();
ARDebug.LogInfo("_DrawARLogo GetTrackable {0}", singleHit.GetTrackable());
if ((trackable is ARPlane && ((ARPlane)trackable).IsPoseInPolygon(singleHit.HitPose)) ||
(trackable is ARPoint))
{
hitResult = singleHit;
hasHitFlag = true;
if (trackable is ARPlane)
{
break;
}
}
}
if (hasHitFlag != true)
{
ARDebug.LogInfo("_DrawARLogo can't hit!");
return;
}
if (addedAnchors.Count > 16)
{
ARAnchor toRemove = addedAnchors[0];
toRemove.Detach();
addedAnchors.RemoveAt(0);
}
GameObject prefab;
trackable = hitResult.GetTrackable();
if (trackable is ARPlane)
{
prefab = arDiscoveryLogoPlanePrefabs;
}
else
{
prefab = arDiscoveryLogoPointPrefabs;
}
/*
* ARAnchor anchor = hitResult.CreateAnchor();
* var logoObject = Instantiate(prefab, anchor.GetPose().position, anchor.GetPose().rotation);
* logoObject.GetComponent<ARDiscoveryLogoVisualizer>().Initialize(anchor);
* addedAnchors.Add(anchor);
*/
}
private ARHitResult HitTest4Result(ARFrame frame, ARCamera camera, MotionEvent mEvent)
{
ARHitResult hitResult = null;
IList <ARHitResult> hitTestResults = frame.HitTest(mEvent);
for (int i = 0; i < hitTestResults.Count; i++)
{
// Determine whether the hit point is within the plane polygon.
ARHitResult hitResultTemp = hitTestResults.ElementAt(i);
if (hitResultTemp == null)
{
continue;
}
IARTrackable trackable = hitResultTemp.Trackable;
Java.Lang.Object PointOrPlane = null;
bool isPlanHitJudge = false;
bool isPointHitJudge = false;
try
{
PointOrPlane = trackable.JavaCast <ARPlane>();
isPlanHitJudge =
PointOrPlane.GetType() == typeof(ARPlane) && ((ARPlane)PointOrPlane).IsPoseInPolygon(hitResultTemp.HitPose) &&
(CalculateDistanceToPlane(hitResultTemp.HitPose, camera.Pose) > 0);
}
catch (Exception e)
{
PointOrPlane = trackable.JavaCast <ARPoint>();
isPointHitJudge = PointOrPlane.GetType() == typeof(ARPoint) &&
((ARPoint)PointOrPlane).GetOrientationMode() == ARPoint.OrientationMode.EstimatedSurfaceNormal;
};
// Determine whether the point cloud is clicked and whether the point faces the camera.
// Select points on the plane preferentially.
if (isPlanHitJudge)
{
hitResult = hitResultTemp;
}
}
return(hitResult);
}
private void DoWhenEventTypeSingleTap(ARHitResult hitResult)
{
// The hit results are sorted by distance. Only the nearest hit point is valid.
// Set the number of stored objects to 10 to avoid the overload of rendering and AR Engine.
if (mVirtualObjects.Count >= 16)
{
mVirtualObjects.ElementAt(0).GetAnchor().Detach();
mVirtualObjects.RemoveAt(0);
}
IARTrackable currentTrackable = hitResult.Trackable;
Java.Lang.Object PointOrPlane = null;
bool isPlanHitJudge = false;
bool isPointHitJudge = false;
try
{
PointOrPlane = currentTrackable.JavaCast <ARPlane>();
isPlanHitJudge = PointOrPlane.GetType() == typeof(ARPlane);
}
catch (Exception e)
{
PointOrPlane = currentTrackable.JavaCast <ARPoint>();
isPointHitJudge = PointOrPlane.GetType() == typeof(ARPoint);
};
if (isPointHitJudge)
{
mVirtualObjects.Add(new VirtualObject(hitResult.CreateAnchor(), BLUE_COLORS));
}
else if (isPlanHitJudge)
{
mVirtualObjects.Add(new VirtualObject(hitResult.CreateAnchor(), GREEN_COLORS));
}
else
{
Log.Info(TAG, "Hit result is not plane or point.");
}
}
private void HandleGestureEvent(ARFrame arFrame, ARCamera arCamera, float[] projectionMatrix, float[] viewMatrix)
{
GestureEvent mEvent = mQueuedSingleTaps.Poll().JavaCast <GestureEvent>();
if (mEvent == null)
{
return;
}
// Do not perform anything when the object is not tracked.
if (arCamera.TrackingState != ARTrackableTrackingState.Tracking)
{
return;
}
int eventType = mEvent.GetType();
switch (eventType)
{
case GestureEvent.GESTURE_EVENT_TYPE_DOUBLETAP:
DoWhenEventTypeDoubleTap(viewMatrix, projectionMatrix, mEvent);
break;
case GestureEvent.GESTURE_EVENT_TYPE_SCROLL:
{
if (mSelectedObj == null)
{
break;
}
ARHitResult hitResult = HitTest4Result(arFrame, arCamera, mEvent.GetEventSecond());
if (hitResult != null)
{
mSelectedObj.SetAnchor(hitResult.CreateAnchor());
}
break;
}
case GestureEvent.GESTURE_EVENT_TYPE_SINGLETAPCONFIRMED:
{
// Do not perform anything when an object is selected.
if (mSelectedObj != null)
{
mSelectedObj.SetIsSelected(false);
mSelectedObj = null;
}
MotionEvent tap = mEvent.GetEventFirst();
ARHitResult hitResult = null;
hitResult = HitTest4Result(arFrame, arCamera, tap);
if (hitResult == null)
{
break;
}
DoWhenEventTypeSingleTap(hitResult);
break;
}
default:
Log.Info(TAG, "Unknown motion event type, and do nothing.");
break;
}
}
