public void DidLoad(VirtualObjectManager manager, VirtualObject virtualObject)
{
IsLoadingObject = false;
//Remove progress indicator
Spinner.RemoveFromSuperview();
AddObjectButton.SetImage(UIImage.FromBundle("add"), UIControlState.Normal);
AddObjectButton.SetImage(UIImage.FromBundle("addPressed"), UIControlState.Highlighted);
}
public Gesture(NSSet currentTouches, ARSCNView sceneView, VirtualObject lastUsedObject, VirtualObjectManager manager)
{
this.currentTouches = currentTouches;
this.SceneView = sceneView;
this.LastUsedObject = lastUsedObject;
this.manager = manager;
// Refresh the current gesture at 60 Hz - This ensures smooth updates even when no
// new touch events are incoming (but the camera might have moved).
this.refreshTimer = new System.Threading.Timer(CheckedUpdateGesture, null, 0, 17);
}
public void WillLoad(VirtualObjectManager manager, VirtualObject virtualObject)
{
// Show progress indicator
Spinner = new UIActivityIndicatorView();
Spinner.Center = AddObjectButton.Center;
Spinner.Bounds = new CGRect(0, 0, AddObjectButton.Bounds.Width - 5, AddObjectButton.Bounds.Height - 5);
AddObjectButton.SetImage(UIImage.FromBundle("buttonring"), UIControlState.Normal);
SceneView.AddSubview(Spinner);
Spinner.StartAnimating();
IsLoadingObject = true;
}
// Static factory method
public static Gesture StartGestureFromTouches(NSSet currentTouches, ARSCNView sceneView, VirtualObject lastUsedObject, VirtualObjectManager manager)
{
switch (currentTouches.Count)
{
case 1: return(new SingleFingerGesture(currentTouches, sceneView, lastUsedObject, manager));
case 2: return(new TwoFingerGesture(currentTouches, sceneView, lastUsedObject, manager));
default:
return(null);
}
}
public TwoFingerGesture(NSSet touches, ARSCNView view, VirtualObject parentObject, VirtualObjectManager manager) : base(touches, view, parentObject, manager)
{
var tArray = touches.ToArray <UITouch>();
FirstTouch = tArray[0];
SecondTouch = tArray[1];
var firstTouchPoint = FirstTouch.LocationInView(SceneView);
var secondTouchPoint = SecondTouch.LocationInView(SceneView);
InitialMidpoint = firstTouchPoint.Add(secondTouchPoint).Divide(2f);
// Compute the two other corners of the rectangle defined by the two fingers
// and compute the points in between.
var thirdCorner = new CGPoint(firstTouchPoint.X, secondTouchPoint.Y);
var fourthCorner = new CGPoint(secondTouchPoint.X, firstTouchPoint.Y);
// Compute points in between.
var midpoints = new[]
{
thirdCorner.Add(firstTouchPoint).Divide(2f),
thirdCorner.Add(secondTouchPoint).Divide(2f),
fourthCorner.Add(firstTouchPoint).Divide(2f),
fourthCorner.Add(secondTouchPoint).Divide(2f),
InitialMidpoint.Add(firstTouchPoint).Divide(2f),
InitialMidpoint.Add(secondTouchPoint).Divide(2f),
InitialMidpoint.Add(thirdCorner).Divide(2f),
InitialMidpoint.Add(fourthCorner).Divide(2f)
};
// Check if any of the two fingers or their midpoint is touching the object.
// Based on that, translation, rotation and scale will be enabled or disabled.
var allPoints = new List <CGPoint>(new[] { firstTouchPoint, secondTouchPoint, thirdCorner, fourthCorner, InitialMidpoint });
allPoints.AddRange(midpoints);
FirstTouchedObject = allPoints.Select(pt => this.VirtualObjectAt(pt)).Where(vo => vo != null).FirstOrDefault();
if (FirstTouchedObject != null)
{
ObjectBaseScale = FirstTouchedObject.Scale.X;
AllowTranslation = true;
AllowRotation = true;
InitialDistanceBetweenFingers = (firstTouchPoint.Subtract(secondTouchPoint)).Length();
InitialFingerAngle = Math.Atan2(InitialMidpoint.X, InitialMidpoint.Y);
InitialObjectAngle = FirstTouchedObject.EulerAngles.Y;
}
else
{
AllowTranslation = false;
AllowRotation = false;
}
}
public SingleFingerGesture(NSSet touches, ARSCNView scnView, VirtualObject lastUsedObject, VirtualObjectManager vom)
: base(touches, scnView, lastUsedObject, vom)
{
var firstTouch = (UITouch)touches.First();
initialTouchPosition = firstTouch.LocationInView(scnView);
latestTouchPosition = initialTouchPosition;
firstTouchedObject = this.VirtualObjectAt(initialTouchPosition);
}
public void CouldNotPlace(VirtualObjectManager manager, VirtualObject virtualObject)
{
UserFeedback.ShowMessage("Cannot place object\nTry moving left or right.");
}