/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
AddBackSnapshot(e);
AddFrontSnapshot(e);
var prop = (Direction.IsHorizontal() ? TranslateTransform.XProperty : TranslateTransform.YProperty);
var value = 0.0;
switch (Direction) {
case MoveDirection.Up:
value = -e.Bounds.Height;
break;
case MoveDirection.Down:
value = +e.Bounds.Height;
break;
case MoveDirection.Left:
value = -e.Bounds.Width;
break;
case MoveDirection.Right:
value = +e.Bounds.Width;
break;
}
var txBack = new TranslateTransform();
txBack.SetValue(prop, 0.0);
e.BackSnapshot.RenderTransform = txBack;
AddAnimation(e, txBack, prop, 0.0, value);
var txFront = new TranslateTransform();
txFront.SetValue(prop, -value);
e.FrontSnapshot.RenderTransform = txFront;
AddAnimation(e, txFront, prop, -value, 0.0);
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
if (Direction == FadeDirection.FadeIn) {
AddBackSnapshot(e);
AddFrontSnapshot(e);
AddAnimation(e, e.FrontSnapshot, FrameworkElement.OpacityProperty, 0.0, 1.0);
} else {
AddFrontSnapshot(e);
AddBackSnapshot(e);
AddAnimation(e, e.BackSnapshot, FrameworkElement.OpacityProperty, 1.0, 0.0);
}
}
/// <summary>Adds a 3D viewport to the transition panel.</summary>
protected Viewport3D AddViewport3D(TransitionEventArgs e) {
var panel = (TransitionPanel)e.Source;
var viewport = new Viewport3D();
viewport.IsHitTestVisible = false;
viewport.Camera = CreateCamera(panel, FieldOfView);
viewport.ClipToBounds = false;
ModelVisual3D light = new ModelVisual3D();
light.Content = Light;
viewport.Children.Add(light);
panel.Children.Add(viewport);
return viewport;
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
AddFrontSnapshot(e);
var viewport = AddViewport3D(e);
var panel = (TransitionPanel)e.Source;
var size = panel.RenderSize;
// Create a rectangle
MeshGeometry3D mesh = CreateMesh(new Point3D(),
new Vector3D(size.Width, 0, 0),
new Vector3D(0, size.Height, 0),
1, 1, new Rect(0, 0, 1, 1));
GeometryModel3D geometry = new GeometryModel3D();
geometry.Geometry = mesh;
var cloneBrush = ToBrush(e.BackSnapshot);
geometry.Material = new DiffuseMaterial(cloneBrush);
ModelVisual3D model = new ModelVisual3D();
model.Content = geometry;
viewport.Children.Add(model);
Vector3D axis;
Point3D center = new Point3D();
switch (Direction) {
case MoveDirection.Left:
axis = new Vector3D(0, 1, 0);
break;
case MoveDirection.Right:
axis = new Vector3D(0, -1, 0);
center = new Point3D(size.Width, 0, 0);
break;
case MoveDirection.Up:
axis = new Vector3D(-1, 0, 0);
break;
default:
axis = new Vector3D(1, 0, 0);
center = new Point3D(0, size.Height, 0);
break;
}
AxisAngleRotation3D rotation = new AxisAngleRotation3D(axis, 0);
model.Transform = new RotateTransform3D(rotation, center);
AddAnimation(e, rotation, AxisAngleRotation3D.AngleProperty, 90);
AddAnimation(e, cloneBrush, Brush.OpacityProperty, 0);
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
AddFrontSnapshot(e);
var viewport = AddViewport3D(e);
var panel = (TransitionPanel)e.Source;
var cloneBrush = ToBrush(e.BackSnapshot);
Size size = panel.RenderSize;
MeshGeometry3D leftDoor = CreateMesh(new Point3D(),
new Vector3D(size.Width / 2, 0, 0),
new Vector3D(0, size.Height, 0),
1, 1, new Rect(0, 0, 0.5, 1));
GeometryModel3D leftDoorGeometry = new GeometryModel3D();
leftDoorGeometry.Geometry = leftDoor;
leftDoorGeometry.Material = new DiffuseMaterial(cloneBrush);
AxisAngleRotation3D leftRotation = new AxisAngleRotation3D(new Vector3D(0, 1, 0), 0);
leftDoorGeometry.Transform = new RotateTransform3D(leftRotation);
GeometryModel3D rightDoorGeometry = new GeometryModel3D();
MeshGeometry3D rightDoor = CreateMesh(new Point3D(size.Width / 2, 0, 0),
new Vector3D(size.Width / 2, 0, 0),
new Vector3D(0, size.Height, 0),
1, 1, new Rect(0.5, 0, 0.5, 1));
rightDoorGeometry.Geometry = rightDoor;
rightDoorGeometry.Material = new DiffuseMaterial(cloneBrush);
AxisAngleRotation3D rightRotation = new AxisAngleRotation3D(new Vector3D(0, 1, 0), 0);
rightDoorGeometry.Transform = new RotateTransform3D(rightRotation, size.Width, 0, 0);
Model3DGroup doors = new Model3DGroup();
doors.Children.Add(leftDoorGeometry);
doors.Children.Add(rightDoorGeometry);
ModelVisual3D model = new ModelVisual3D();
model.Content = doors;
viewport.Children.Add(model);
AddAnimation(e, leftRotation, AxisAngleRotation3D.AngleProperty, 90 - 0.5 * FieldOfView);
AddAnimation(e, rightRotation, AxisAngleRotation3D.AngleProperty, -(90 - 0.5 * FieldOfView));
AddAnimation(e, cloneBrush, Brush.OpacityProperty, 0);
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
var viewport = AddViewport3D(e);
var panel = (TransitionPanel)e.Source;
var size = panel.RenderSize;
Point3D origin = new Point3D(); // origin of 2nd face
Vector3D u = new Vector3D(), v = new Vector3D(); // u & v vectors of 2nd face
double angleRads = Angle.ToRadians();
double halfAngleRads = (Angle / 2).ToRadians();
Point3D rotationCenter;
Vector3D rotationAxis;
TranslateTransform3D translation = null;
if (Direction.IsHorizontal()) {
var RTL = (Direction == MoveDirection.Left);
if (IsContained) {
rotationCenter = new Point3D(RTL ? size.Width : 0, 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation x = new DoubleAnimation(RTL ? -size.Width : size.Width, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetXProperty, x);
} else {
rotationCenter = new Point3D(size.Width / 2, 0, size.Width / 2 * Math.Tan(halfAngleRads));
}
rotationAxis = new Vector3D(0, 1, 0);
if (RTL) {
u.X = -size.Width * Math.Cos(angleRads);
u.Z = size.Width * Math.Sin(angleRads);
origin.X = size.Width;
} else {
u.X = -size.Width * Math.Cos(angleRads);
u.Z = -size.Width * Math.Sin(angleRads);
origin.X = -u.X;
origin.Z = -u.Z;
}
v.Y = size.Height;
} else {
var BTT = (Direction == MoveDirection.Up);
if (IsContained) {
rotationCenter = new Point3D(0, BTT ? size.Height : 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation y = new DoubleAnimation(BTT ? -size.Height : size.Height, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetYProperty, y);
} else {
rotationCenter = new Point3D(0, size.Height / 2, size.Height / 2 * Math.Tan(halfAngleRads));
}
rotationAxis = new Vector3D(1, 0, 0);
if (BTT) {
v.Y = -size.Height * Math.Cos(angleRads);
v.Z = size.Height * Math.Sin(angleRads);
origin.Y = size.Height;
} else {
v.Y = -size.Height * Math.Cos(angleRads);
v.Z = -size.Height * Math.Sin(angleRads);
origin.Y = -v.Y;
origin.Z = -v.Z;
}
u.X = size.Width;
}
double endAngle = 180 - Angle;
if (Direction == MoveDirection.Right || Direction == MoveDirection.Up) {
endAngle = -endAngle;
}
var m1 = _createSide(e, e.BackSnapshot, new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), endAngle, rotationCenter, rotationAxis);
var m2 = _createSide(e, e.FrontSnapshot, origin, u, v, endAngle, rotationCenter, rotationAxis);
viewport.Children.Add(m1);
viewport.Children.Add(m2);
m1.Transform = m2.Transform = translation;
}
private ModelVisual3D _createSide(TransitionEventArgs e, Image snapshot, Point3D origin, Vector3D u, Vector3D v, double endAngle, Point3D rotationCenter, Vector3D rotationAxis) {
var sideMesh = CreateMesh(origin, u, v, 1, 1, new Rect(0, 0, 1, 1));
var sideModel = new GeometryModel3D();
sideModel.Geometry = sideMesh;
var cloneBrush = ToBrush(snapshot);
sideModel.Material = new DiffuseMaterial(cloneBrush);
var rotation = new AxisAngleRotation3D(rotationAxis, 0);
sideModel.Transform = new RotateTransform3D(rotation, rotationCenter);
AddAnimation(e, rotation, AxisAngleRotation3D.AngleProperty, endAngle);
var side = new ModelVisual3D();
side.Content = sideModel;
return side;
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
AddFrontSnapshot(e);
var viewport = AddViewport3D(e);
var panel = (TransitionPanel)e.Source;
var width = panel.ActualWidth;
var height = panel.ActualHeight;
if (!width.IsPositive() || !height.IsPositive()) {
CompleteTransition(e);
return;
}
var xparticles = (width > height ? MeshGranularity : (int)(MeshGranularity * width / height));
var yparticles = (width > height ? (int)(MeshGranularity * height / width) : MeshGranularity);
var mesh = CreateMesh(new Point3D(), new Vector3D(width, 0, 0), new Vector3D(0, height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
var cloneBrush = ToBrush(e.BackSnapshot);
var cloneMaterial = new DiffuseMaterial(cloneBrush);
var ustep = width / (xparticles - 1);
var vstep = height / (yparticles - 1);
var points = mesh.Positions;
var rand = new Random();
// add some random movement to the z order
for (int i = 0; i < points.Count; i++) {
points[i] += 0.1 * ustep * (rand.NextDouble() * 2 - 1) * new Vector3D(0, 0, 1);
}
var oldPoints = points.Clone();
// TODO: Respect the duration property
var timeStep = 1 / 60.0;
var timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep/2);
bool fading = false;
double time = 0;
double slideVelocity = width / 2.0;
double windScale = 30 * width * height;
Vector3D acceleration = new Vector3D(0, 700, 0); //gravity
timer.Tick += delegate {
time = time + timeStep;
Point mousePos = Mouse.GetPosition(viewport);
Point3D mousePos3D = new Point3D(mousePos.X, mousePos.Y, -10);
// Cloth physics based on work of Thomas Jakobsen http://www.teknikus.dk/tj/gdc2001.htm
for (int i = 0; i < oldPoints.Count; i++) {
Point3D currentPoint = points[i];
Vector3D wind = new Vector3D(0, 0, windScale / (mousePos3D - currentPoint).LengthSquared);
Point3D newPoint = currentPoint + (currentPoint - oldPoints[i]) + timeStep * timeStep * (acceleration + wind);
if (newPoint.Y > height) newPoint.Y = height;
oldPoints[i] = newPoint;
}
for (int i = oldPoints.Count - 1; i > 0; i--) {
// constrain with point to the left
if (i > yparticles) _constrain(oldPoints, i, i - yparticles, ustep);
// constrain with point to the top
if (i % yparticles != 0) _constrain(oldPoints, i, i - 1, vstep);
}
// slide the top row of points to the left
for (int i = 0; i < xparticles; i += 1) {
oldPoints[i * yparticles] = new Point3D((i * ustep - slideVelocity * time * i / (xparticles - 1)).Max(0), 0, 0);
}
if (!fading && points[points.Count - yparticles].X < width / 2) {
fading = true;
DoubleAnimation da = new DoubleAnimation(0, new Duration(TimeSpan.FromSeconds(1.0)));
da.Completed += delegate {
timer.Stop();
CompleteTransition(e);
};
cloneBrush.BeginAnimation(Brush.OpacityProperty, da);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
GeometryModel3D geo = new GeometryModel3D(mesh, cloneMaterial);
geo.BackMaterial = cloneMaterial;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
AddAnimation(e, timer);
}
// completes an animated transition
private void _onCompleteAnimatedTransition(TransitionEventArgs transitionData) {
if (transitionData == null || transitionData != _transitionData) return;
// remove any visual children added for the transition
for (var i = Children.Count - 1; i > 1; i--) {
Children.RemoveAt(i);
}
// restore the front/back layers and cleanup
_transitionData = null;
InTransition = false;
BackLayer.Content = null;
FrontLayer.Show();
BackLayer.Show();
CoerceValue(ClipToBoundsProperty);
// raise the transition completed event
var completedArgs = new TransitionEventArgs(TransitionPanel.TransitionCompletedEvent, this) {
OldContent = transitionData.OldContent,
NewContent = transitionData.NewContent
};
RaiseEvent(completedArgs);
}
// begins an animated self transition
private void _beginAnimatedSelfTransition(Transition transition, Action onComplete) {
InTransition = true;
CoerceValue(ClipToBoundsProperty);
_transitionData = new TransitionEventArgs(TransitionPanel.TransitionStartedEvent, this) {
Bounds = RenderSize,
OldContent = FrontLayer.Content,
NewContent = FrontLayer.Content,
Transition = transition
};
_transitionData.BackSnapshot = _selfTransitionSnapshot;
_transitionData.FrontSnapshot = _captureSnapshot(FrontLayer, true);
_transitionData.OnCompleteCallback = () => {
_onCompleteAnimatedTransition(_transitionData);
if (onComplete != null) onComplete();
};
RaiseEvent(_transitionData);
transition.InvokeBeginTransition(_transitionData);
}
// begins an animated transition
private void _beginAnimatedTransition(Transition transition, Action onComplete) {
// swap the front and back layers (without adding and removing them from the visual tree to avoid superfluous loaded/unloaded events)
_flipLayers = !_flipLayers;
// set the front layer's content
FrontLayer.Content = Content;
FrontLayer.ContentTemplate = ContentTemplate;
FrontLayer.ContentTemplateSelector = ContentTemplateSelector;
// start the transition from back layer to front layer
InTransition = true;
CoerceValue(ClipToBoundsProperty);
_transitionData = new TransitionEventArgs(TransitionPanel.TransitionStartedEvent, this) {
Bounds = RenderSize,
OldContent = BackLayer.Content,
NewContent = FrontLayer.Content,
Transition = transition
};
_transitionData.OnCompleteCallback = () => {
_onCompleteAnimatedTransition(_transitionData);
if (onComplete != null) onComplete();
};
Action invokeTransition = () => {
_transitionData.BackSnapshot = _captureSnapshot(BackLayer, true);
_transitionData.FrontSnapshot = _captureSnapshot(FrontLayer, true);
transition.InvokeBeginTransition(_transitionData);
};
RaiseEvent(_transitionData);
if ((Content is DependencyObject) && GetHasNestedTransitionPanel((DependencyObject)Content)) {
// if content has a nested transition panel, use a timer to allow the nested transition panel to draw its initial state before the
// enclosing transition is started to avoid seeing a blank panel during the transition
var timer = new GuiTimer(DispatcherPriority.Background);
timer.Start(t => invokeTransition());
} else {
invokeTransition();
}
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
CompleteTransition(e);
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
AddFrontSnapshot(e);
var viewport = AddViewport3D(e);
var panel = (TransitionPanel)e.Source;
var width = panel.ActualWidth;
var height = panel.ActualHeight;
if (!width.IsPositive() || !height.IsPositive()) {
CompleteTransition(e);
return;
}
var xparticles = (width > height ? MeshGranularity : (int)(MeshGranularity * width / height));
var yparticles = (width > height ? (int)(MeshGranularity * height / width) : MeshGranularity);
var mesh = CreateMesh(new Point3D(), new Vector3D(width, 0, 0), new Vector3D(0, height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
var cloneBrush = ToBrush(e.BackSnapshot);
var cloneMaterial = new DiffuseMaterial(cloneBrush);
double ustep = width / (xparticles - 1), vstep = height / (yparticles - 1);
var points = mesh.Positions;
var oldPoints = points.Clone();
double time = 0;
double duration = Duration.TotalSeconds;
double timeStep = 1.0 / 30.0;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep * (duration / 2.0));
timer.Tick += delegate {
time = time + timeStep;
Point mousePos = Mouse.GetPosition(viewport);
Point3D mousePos3D = new Point3D(mousePos.X, mousePos.Y, -10);
// Cloth physics based on work of Thomas Jakobsen http://www.ioi.dk/~thomas
for (int i = 0; i < oldPoints.Count; i++) {
Point3D currentPoint = points[i];
Point3D newPoint = currentPoint + 0.9 * (currentPoint - oldPoints[i]);
if (newPoint.Y > height) newPoint.Y = height;
oldPoints[i] = newPoint;
}
for (int a = yparticles - 1; a >= 0; a--)
for (int b = xparticles - 1; b >= 0; b--) {
int i = b * yparticles + a;
// constrain with point to the left
if (i > yparticles) {
_constrain(oldPoints, i, i - yparticles, ustep);
}
// constrain with point to the top
if (i % yparticles != 0) {
_constrain(oldPoints, i, i - 1, vstep);
}
// constrain the sides
if (a == 0) {
oldPoints[i] = new Point3D(oldPoints[i].X, 0, oldPoints[i].Z);
}
if (a == yparticles - 1) {
oldPoints[i] = new Point3D(oldPoints[i].X, height, oldPoints[i].Z);
}
if (b == 0) {
oldPoints[i] = new Point3D(0, a * height / (yparticles - 1), 0);
}
if (b == xparticles - 1) {
double angle = time / duration * Math.PI / (0.8 + 0.5 * (yparticles - (double)a) / yparticles);
oldPoints[i] = new Point3D(width * Math.Cos(angle), a * height / (yparticles - 1), -width * Math.Sin(angle));
}
}
if (time > duration) {
timer.Stop();
CompleteTransition(e);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
GeometryModel3D geo = new GeometryModel3D(mesh, cloneMaterial);
geo.BackMaterial = cloneMaterial;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
AddAnimation(e, timer);
}
/// <summary/>
protected override void CompleteTransition(TransitionEventArgs e) {
Storyboard oldStoryboard = (Storyboard)e.BackSnapshot.GetValue(OldContentStoryboardProperty);
if (oldStoryboard != null)
oldStoryboard.Stop(e.BackSnapshot);
e.BackSnapshot.ClearValue(FrameworkElement.StyleProperty);
Storyboard newStoryboard = (Storyboard)e.FrontSnapshot.GetValue(NewContentStoryboardProperty);
if (newStoryboard != null)
newStoryboard.Stop(e.FrontSnapshot);
e.FrontSnapshot.ClearValue(FrameworkElement.StyleProperty);
base.CompleteTransition(e);
}
/// <summary/>
protected override void BeginTransition(TransitionEventArgs e) {
var oldStoryboard = OldContentStoryboard;
var newStoryboard = NewContentStoryboard;
if (NewContentOnTop) {
AddFrontSnapshot(e);
AddBackSnapshot(e);
} else {
AddBackSnapshot(e);
AddFrontSnapshot(e);
}
if (oldStoryboard != null || newStoryboard != null) {
e.BackSnapshot.Style = OldContentStyle;
e.FrontSnapshot.Style = NewContentStyle;
// Flag to determine when both storyboards are done
bool done = oldStoryboard == null || newStoryboard == null;
if (oldStoryboard != null) {
oldStoryboard = oldStoryboard.Clone();
e.BackSnapshot.SetValue(OldContentStoryboardProperty, oldStoryboard);
oldStoryboard.Completed += delegate {
if (done) CompleteTransition(e);
done = true;
};
oldStoryboard.Begin(e.BackSnapshot, true);
}
if (newStoryboard != null) {
newStoryboard = newStoryboard.Clone();
e.FrontSnapshot.SetValue(NewContentStoryboardProperty, newStoryboard);
newStoryboard.Completed += delegate {
if (done) CompleteTransition(e);
done = true;
};
newStoryboard.Begin(e.FrontSnapshot, true);
}
} else {
CompleteTransition(e);
}
}