/// <summary>
/// Animates the camera view matrix after user screen drag completed
/// </summary>
private void AnimateCameraAfterFreeDrag()
{
_onDragEndAnimation = true;
XNAMatrixAnimation camAnim = new XNAMatrixAnimation(_cameraMatrix, _cameraMatrixBehindDrag, TimeSpan.FromSeconds(0.5), 30);
camAnim.OnAnimating += (XNAMatrixAnimation sender, XNAMatrixAnimationEventArgs e) =>
{
_cameraMatrix = e.Value;
};
camAnim.OnCompleted += (XNAMatrixAnimation sender, XNAMatrixAnimationEventArgs e) =>
{
_cameraMatrix = e.Value;
_onDragEndAnimation = false;
_gestureState = GestureStateEnum.OnMotion;
};
camAnim.Start();
}
private void HandleGesture()
{
while (TouchPanel.IsGestureAvailable)
{
GestureSample gestureSample = TouchPanel.ReadGesture();
switch (gestureSample.GestureType)
{
case GestureType.FreeDrag:
_gestureTimer.Stop();
_gestureState = GestureStateEnum.OnFreeDrag;
float rotateRate = 0.01f;
float translateRate = 0.1f;
_cameraMatrix = _cameraMatrix * Matrix.CreateRotationY(-gestureSample.Delta.X * rotateRate);
_cameraMatrix = _cameraMatrix * Matrix.CreateTranslation(0f, -gestureSample.Delta.Y * translateRate, 0f);
//rotate radar
Dispatcher.BeginInvoke(delegate()
{
(radarCanvas.RenderTransform as System.Windows.Media.RotateTransform).Angle += MathHelper.ToDegrees((gestureSample.Delta.X * rotateRate));
});
break;
case GestureType.DragComplete:
_gestureTime = 0;
_gestureTimer.Start();
break;
case GestureType.Tap:
_gestureState = GestureStateEnum.OnMotion;
if (myVM.ClickedNearbyLocation != null)
{
AnimateLocationDeselection(myVM.ClickedNearbyLocation);
myVM.ClickedNearbyLocation.IsClickedOnView = false;
if (OnLocationReleased != null)
{
OnLocationReleased(this, myVM.ClickedNearbyLocation);
}
}
if (_gestureState != GestureStateEnum.OnPressHold)
{
_gestureState = GestureStateEnum.OnPressHold;
float mouseX = gestureSample.Position.X;
float mouseY = gestureSample.Position.Y;
Vector3 nearsource = new Vector3((float)mouseX, (float)mouseY, 0f);
Vector3 farsource = new Vector3((float)mouseX, (float)mouseY, -1f);
Vector3 nearPoint = _device.Viewport.Unproject(nearsource, _projectionMatrix, _cameraMatrix, _phoneWorld);
Vector3 farPoint = _device.Viewport.Unproject(farsource, _projectionMatrix, _cameraMatrix, _phoneWorld);
Vector3 direction = -farPoint + nearPoint;
direction.Normalize();
Ray pickRay = new Ray(nearPoint, direction);
if (myVM.ClickedNearbyLocation != null)
{
AnimateLocationDeselection(myVM.ClickedNearbyLocation);
myVM.ClickedNearbyLocation.IsClickedOnView = false;
if (OnLocationReleased != null)
{
OnLocationReleased(this, myVM.ClickedNearbyLocation);
}
}
foreach (LocationsVM.Location l in myVM.SelectedNearbyLocations)
{
float?result = pickRay.Intersects(l.PlacemarkBoundingSphere);
if (result.HasValue)
{
AnimateLocationSelection(l);
l.IsClickedOnView = true;
if (OnLocationSelected != null)
{
OnLocationSelected(this, l);
}
break;
}
}
}
break;
}
}
}
