private static void AnimationFunction_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
QuaternionAnimation a = (QuaternionAnimation)d;
a._isAnimationFunctionValid = false;
a.PropertyChanged(e.Property);
}
internal static void AddRotationAnimation(Storyboard storyboard, TimeSpan animationTime, TimeSpan beginTime, double angleOfRotation, Vector3D axisOfRotation, Quaternion currentRotationQuaternion)
{
Quaternion delta = new Quaternion(axisOfRotation, angleOfRotation);
Quaternion newRotation = currentRotationQuaternion * delta;
QuaternionAnimation rotationAnimation = new QuaternionAnimation(newRotation, new Duration(animationTime));
rotationAnimation.AccelerationRatio = 0.5;
rotationAnimation.DecelerationRatio = 0.5;
rotationAnimation.BeginTime = beginTime;
Storyboard.SetTargetName(rotationAnimation, "viewportCamera");
//Property path for the animation target is going to be the Transform property's Children collection. Specifically the item at index 1 (the first item is the zoom transform),
//which is our rotation transform, and on it we want to animate the Rotation property's Quarternion property...whew, that was confusing :)
PropertyPath path = new PropertyPath("(0).(1)[1].(2).(3)", PerspectiveCamera.TransformProperty, Transform3DGroup.ChildrenProperty, RotateTransform3D.RotationProperty, QuaternionRotation3D.QuaternionProperty);
Storyboard.SetTargetProperty(rotationAnimation, path);
storyboard.Children.Add(rotationAnimation);
}
void ps_GeoLocationSelected(double longitude, double latitude, FlickrPhoto photo)
{
MakeEarthVisible();
// convert relative to our object
longitude = 180 + longitude;
if (earthLocationVisual != null)
{
earthLocationVisual.SetPinFill(Brushes.White);
((Transform3DGroup)earthLocationVisual.Transform).Children.RemoveAt(0);
}
earthLocationVisual = _photoToPushpin[photo];
earthLocationVisual.SetPinFill(Brushes.Red);
// if it had any children, clear the now
Transform3DGroup transformGroup = new Transform3DGroup();
transformGroup.Children.Add(new ScaleTransform3D(1, 1, 1.1));
transformGroup.Children.Add(new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(1, 0, 0), -latitude)));
transformGroup.Children.Add(new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(0, 1, 0), longitude)));
earthLocationVisual.Transform = transformGroup;
if (!earth.Children.Contains(earthLocationVisual))
{
earth.Children.Add(earthLocationVisual);
}
QuaternionAnimation quatAnimLong = new QuaternionAnimation(new Quaternion(new Vector3D(0, 1, 0), -longitude),
new Duration(TimeSpan.FromMilliseconds(500)));
QuaternionAnimation quatAnimLat = new QuaternionAnimation(new Quaternion(new Vector3D(1, 0, 0), latitude),
new Duration(TimeSpan.FromMilliseconds(500)));
quatAnimLat.Completed += new EventHandler(quatAnimLat_Completed);
_myQuaternionRotLong.BeginAnimation(QuaternionRotation3D.QuaternionProperty, quatAnimLong);
_myQuaternionRotLat.BeginAnimation(QuaternionRotation3D.QuaternionProperty, quatAnimLat);
}