protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Brush clone = CreateBrush(oldContent);
Size size = transitionElement.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(clone);
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(clone);
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);
DoubleAnimation da = new DoubleAnimation(90 - 0.5 * FieldOfView, Duration);
leftRotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
da = new DoubleAnimation(-(90 - 0.5 * FieldOfView), Duration);
rightRotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
da = new DoubleAnimation(0, Duration);
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
clone.BeginAnimation(Brush.OpacityProperty, da);
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
DoubleAnimation da = new DoubleAnimation(0, Duration);
da.Completed += delegate {
EndTransition(transitionElement, oldContent, newContent);
};
oldContent.BeginAnimation(UIElement.OpacityProperty, da);
}
protected virtual Camera CreateCamera(TransitionPresenter transitionElement, double fov)
{
Size size = transitionElement.RenderSize;
return(new PerspectiveCamera(new Point3D(size.Width / 2, size.Height / 2, -size.Width / Math.Tan(fov / 2 * Math.PI / 180) / 2),
new Vector3D(0, 0, 1),
new Vector3D(0, -1, 0),
fov));
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
DoubleAnimation da = new DoubleAnimation(0, Duration);
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
oldContent.BeginAnimation(UIElement.OpacityProperty, da);
}
private static object CoerceTransition(object element, object value)
{
TransitionPresenter te = (TransitionPresenter)element;
if (te.IsTransitioning)
{
return(te._activeTransition);
}
return(value);
}
// Don't update content until done transitioning
private static object CoerceContent(object element, object value)
{
TransitionPresenter te = (TransitionPresenter)element;
if (te.IsTransitioning)
{
return(te.CurrentContentPresenter.Content);
}
return(value);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Brush clone = CreateBrush(oldContent);
Size size = transitionElement.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(clone);
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(clone);
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);
DoubleAnimation da = new DoubleAnimation(90 - 0.5 * FieldOfView, Duration);
leftRotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
da = new DoubleAnimation(-(90 - 0.5 * FieldOfView), Duration);
rightRotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
da = new DoubleAnimation(0, Duration);
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
clone.BeginAnimation(Brush.OpacityProperty, da);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Size size = transitionElement.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;
VisualBrush clone = new VisualBrush(oldContent);
geometry.Material = new DiffuseMaterial(clone);
ModelVisual3D model = new ModelVisual3D();
model.Content = geometry;
viewport.Children.Add(model);
Vector3D axis;
Point3D center = new Point3D();
switch (Direction)
{
case RotateDirection.Left:
axis = new Vector3D(0, 1, 0);
break;
case RotateDirection.Right:
axis = new Vector3D(0, -1, 0);
center = new Point3D(size.Width, 0, 0);
break;
case RotateDirection.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);
DoubleAnimation da = new DoubleAnimation(0, Duration);
clone.BeginAnimation(Brush.OpacityProperty, da);
da = new DoubleAnimation(90, Duration);
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
rotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
}
// Force clip to be true if the active Transition requires it
private static object CoerceClipToBounds(object element, object value)
{
TransitionPresenter transitionElement = (TransitionPresenter)element;
bool clip = (bool)value;
if (!clip && transitionElement.IsTransitioning)
{
Transition transition = transitionElement.Transition;
if (transition.ClipToBounds)
{
return(true);
}
}
return(value);
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Storyboard oldStoryboard = OldContentStoryboard;
Storyboard newStoryboard = NewContentStoryboard;
if (oldStoryboard != null || newStoryboard != null)
{
oldContent.Style = OldContentStyle;
newContent.Style = NewContentStyle;
// Flag to determine when both storyboards are done
bool done = oldStoryboard == null || newStoryboard == null;
if (oldStoryboard != null)
{
oldStoryboard = oldStoryboard.Clone();
oldContent.SetValue(OldContentStoryboardProperty, oldStoryboard);
oldStoryboard.Completed += delegate
{
if (done)
{
EndTransition(transitionElement, oldContent, newContent);
}
done = true;
};
oldStoryboard.Begin(oldContent, true);
}
if (newStoryboard != null)
{
newStoryboard = newStoryboard.Clone();
newContent.SetValue(NewContentStoryboardProperty, newStoryboard);
newStoryboard.Completed += delegate
{
if (done)
{
EndTransition(transitionElement, oldContent, newContent);
}
done = true;
};
newStoryboard.Begin(newContent, true);
}
}
else
{
EndTransition(transitionElement, oldContent, newContent);
}
}
// Setup the Viewport 3D
protected internal sealed override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Viewport3D viewport = new Viewport3D();
viewport.IsHitTestVisible = false;
viewport.Camera = CreateCamera(transitionElement, FieldOfView);
viewport.ClipToBounds = false;
ModelVisual3D light = new ModelVisual3D();
light.Content = Light;
viewport.Children.Add(light);
transitionElement.Children.Add(viewport);
BeginTransition3D(transitionElement, oldContent, newContent, viewport);
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
TranslateTransform tt = new TranslateTransform(StartPoint.X * transitionElement.ActualWidth, StartPoint.Y * transitionElement.ActualHeight);
if (IsNewContentTopmost)
newContent.RenderTransform = tt;
else
oldContent.RenderTransform = tt;
DoubleAnimation da = new DoubleAnimation(EndPoint.X * transitionElement.ActualWidth, Duration);
tt.BeginAnimation(TranslateTransform.XProperty, da);
da.To = EndPoint.Y * transitionElement.ActualHeight;
da.Completed += delegate {
EndTransition(transitionElement, oldContent, newContent);
};
tt.BeginAnimation(TranslateTransform.YProperty, da);
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Storyboard oldStoryboard = (Storyboard)oldContent.GetValue(OldContentStoryboardProperty);
if (oldStoryboard != null)
{
oldStoryboard.Stop(oldContent);
}
oldContent.ClearValue(ContentPresenter.StyleProperty);
Storyboard newStoryboard = (Storyboard)newContent.GetValue(NewContentStoryboardProperty);
if (newStoryboard != null)
{
newStoryboard.Stop(newContent);
}
newContent.ClearValue(ContentPresenter.StyleProperty);
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Storyboard oldStoryboard = OldContentStoryboard;
Storyboard newStoryboard = NewContentStoryboard;
if (oldStoryboard != null || newStoryboard != null)
{
oldContent.Style = OldContentStyle;
newContent.Style = NewContentStyle;
// Flag to determine when both storyboards are done
bool done = oldStoryboard == null || newStoryboard == null;
if (oldStoryboard != null)
{
oldStoryboard = oldStoryboard.Clone();
oldContent.SetValue(OldContentStoryboardProperty, oldStoryboard);
oldStoryboard.Completed += delegate
{
if (done)
EndTransition(transitionElement, oldContent, newContent);
done = true;
};
oldStoryboard.Begin(oldContent, true);
}
if (newStoryboard != null)
{
newStoryboard = newStoryboard.Clone();
newContent.SetValue(NewContentStoryboardProperty, newStoryboard);
newStoryboard.Completed += delegate
{
if (done)
EndTransition(transitionElement, oldContent, newContent);
done = true;
};
newStoryboard.Begin(newContent, true);
}
}
else
{
EndTransition(transitionElement, oldContent, newContent);
}
}
protected internal override void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
TranslateTransform tt = new TranslateTransform(StartPoint.X * transitionElement.ActualWidth, StartPoint.Y * transitionElement.ActualHeight);
if (IsNewContentTopmost)
{
newContent.RenderTransform = tt;
}
else
{
oldContent.RenderTransform = tt;
}
DoubleAnimation da = new DoubleAnimation(EndPoint.X * transitionElement.ActualWidth, Duration);
tt.BeginAnimation(TranslateTransform.XProperty, da);
da.To = EndPoint.Y * transitionElement.ActualHeight;
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
tt.BeginAnimation(TranslateTransform.YProperty, da);
}
// Setup the Viewport 3D
protected internal override sealed void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Viewport3D viewport = new Viewport3D();
viewport.IsHitTestVisible = false;
viewport.Camera = CreateCamera(transitionElement, FieldOfView);
viewport.ClipToBounds = false;
ModelVisual3D light = new ModelVisual3D();
light.Content = Light;
viewport.Children.Add(light);
transitionElement.Children.Add(viewport);
BeginTransition3D(transitionElement, oldContent, newContent, viewport);
}
protected virtual Camera CreateCamera(TransitionPresenter transitionElement, double fov)
{
Size size = transitionElement.RenderSize;
return new PerspectiveCamera(new Point3D(size.Width / 2, size.Height / 2, -size.Width / Math.Tan(fov / 2 * Math.PI / 180) / 2),
new Vector3D(0, 0, 1),
new Vector3D(0, -1, 0),
fov);
}
protected override void BeginTransition3D(
TransitionPresenter transitionElement,
ContentPresenter oldContent,
ContentPresenter newContent,
Viewport3D viewport)
{
Size size = transitionElement.RenderSize;
Point mouse2D = Mouse.GetPosition(transitionElement);
Point3D mouse = new Point3D(mouse2D.X, mouse2D.Y, 0.5 * size.Width);
int xparticles = 10, yparticles = 10;
if (size.Width > size.Height)
{
yparticles = (int)(xparticles * size.Height / size.Width);
}
else
{
xparticles = (int)(yparticles * size.Width / size.Height);
}
double sx = 1.0 / xparticles, sy = 1.0 / yparticles;
Vector3D u = new Vector3D(size.Width * sx, 0, 0);
Vector3D v = new Vector3D(0, size.Height * sy, 0);
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
Vector3D[] velocities = new Vector3D[xparticles * yparticles];
Vector3D[] angularVelocities = new Vector3D[xparticles * yparticles];
Point3D[] centers = new Point3D[xparticles * yparticles];
Point3DCollection positions = new Point3DCollection(4 * xparticles * yparticles);
PointCollection textures = new PointCollection(4 * xparticles * yparticles);
Int32Collection triangles = new Int32Collection(6 * xparticles * yparticles);
int n = 0;
for (int i = 0; i < xparticles; i++)
{
for (int j = 0; j < yparticles; j++)
{
Point3D topleft = (Point3D)(i * u + j * v);
positions.Add(topleft);
positions.Add(topleft + u);
positions.Add(topleft + u + v);
positions.Add(topleft + v);
textures.Add(new Point(i * sx, j * sy));
textures.Add(new Point((i + 1) * sx, j * sy));
textures.Add(new Point((i + 1) * sx, (j + 1) * sy));
textures.Add(new Point(i * sx, (j + 1) * sy));
triangles.Add(n);
triangles.Add(n + 2);
triangles.Add(n + 1);
triangles.Add(n);
triangles.Add(n + 3);
triangles.Add(n + 2);
Vector3D f0 = positions[n] - mouse;
Vector3D f1 = positions[n + 1] - mouse;
Vector3D f2 = positions[n + 2] - mouse;
Vector3D f3 = positions[n + 3] - mouse;
f0 = f0 / f0.LengthSquared;
f1 = f1 / f1.LengthSquared;
f2 = f2 / f2.LengthSquared;
f3 = f3 / f3.LengthSquared;
velocities[n / 4] = 2 * size.Width * (f0 + f1 + f2 + f3);
Point3D center = centers[n / 4] = (Point3D)((i + 0.5) * u + (j + 0.5) * v);
angularVelocities[n / 4] = 200 * (Vector3D.CrossProduct(f0, positions[n] - center) +
Vector3D.CrossProduct(f1, positions[n + 1] - center) +
Vector3D.CrossProduct(f2, positions[n + 2] - center) +
Vector3D.CrossProduct(f3, positions[n + 3] - center));
n += 4;
}
}
MeshGeometry3D mesh = new MeshGeometry3D();
mesh.Positions = positions;
mesh.TextureCoordinates = textures;
mesh.TriangleIndices = triangles;
GeometryModel3D geometryModel = new GeometryModel3D(mesh, clone);
geometryModel.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geometryModel;
viewport.Children.Add(model);
DispatcherTimer timer = new DispatcherTimer();
int t = 0;
double opacityDelta = 1.0 / (Duration.TimeSpan.Seconds * 60.0);
timer.Interval = TimeSpan.FromSeconds(1.0 / 60.0);
timer.Tick += delegate
{
t++;
cloneBrush.Opacity = 1 - t * opacityDelta;
if (cloneBrush.Opacity < opacityDelta)
{
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
return;
}
mesh.Positions = null;
AxisAngleRotation3D axisAngle = new AxisAngleRotation3D();
RotateTransform3D rotation = new RotateTransform3D(axisAngle, new Point3D());
for (int i = 0; i < positions.Count; i += 4)
{
Vector3D velocity = velocities[i / 4];
axisAngle.Axis = angularVelocities[i / 4];
axisAngle.Angle = angularVelocities[i / 4].Length;
rotation.CenterX = centers[i / 4].X;
rotation.CenterY = centers[i / 4].Y;
rotation.CenterZ = centers[i / 4].Z;
positions[i] = rotation.Transform(positions[i]) + velocity;
positions[i + 1] = rotation.Transform(positions[i + 1]) + velocity;
positions[i + 2] = rotation.Transform(positions[i + 2]) + velocity;
positions[i + 3] = rotation.Transform(positions[i + 3]) + velocity;
centers[i / 4] += velocity;
}
mesh.Positions = positions;
};
timer.Start();
}
//Transitions can override this to perform cleanup at the end of the transition
protected virtual void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
int xparticles = 10, yparticles = 10;
Size size = transitionElement.RenderSize;
if (size.Width > size.Height)
yparticles = (int)(xparticles * size.Height / size.Width);
else
xparticles = (int)(yparticles * size.Width / size.Height);
MeshGeometry3D mesh = CreateMesh(new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
double ustep = size.Width / (xparticles - 1), vstep = size.Height / (yparticles - 1);
Point3DCollection points = mesh.Positions;
Point3DCollection oldPoints = points.Clone();
double timeStep = 1.0 / 30.0;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep);
double time = 0;
double duration = 2;
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 > size.Height)
newPoint.Y = size.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, size.Height, oldPoints[i].Z);
if (b == 0)
oldPoints[i] = new Point3D(0, a * size.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(size.Width * Math.Cos(angle), a * size.Height / (yparticles - 1), -size.Width * Math.Sin(angle));
}
}
if (time > (duration - 0)) {
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
timer.Start();
GeometryModel3D geo = new GeometryModel3D(mesh, clone);
geo.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Size size = transitionElement.RenderSize;
Point3D origin = new Point3D(); // origin of 2nd face
Vector3D u = new Vector3D(), v = new Vector3D(); // u & v vectors of 2nd face
double angle = Angle;
Point3D rotationCenter;
Vector3D rotationAxis;
RotateDirection direction = Direction;
TranslateTransform3D translation = null;
double angleRads = Angle * Math.PI / 180;
if (direction == RotateDirection.Left || direction == RotateDirection.Right)
{
if (Contained)
{
rotationCenter = new Point3D(direction == RotateDirection.Left ? size.Width : 0, 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation x = new DoubleAnimation(direction == RotateDirection.Left ? -size.Width : size.Width, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetXProperty, x);
}
else
{
rotationCenter = new Point3D(size.Width / 2, 0, size.Width / 2 * Math.Tan(angle / 2 * Math.PI / 180));
}
rotationAxis = new Vector3D(0, 1, 0);
if (direction == RotateDirection.Left)
{
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
{
if (Contained)
{
rotationCenter = new Point3D(0, direction == RotateDirection.Up ? size.Height : 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation y = new DoubleAnimation(direction == RotateDirection.Up ? -size.Height : size.Height, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetYProperty, y);
}
else
{
rotationCenter = new Point3D(0, size.Height / 2, size.Height / 2 * Math.Tan(angle / 2 * Math.PI / 180));
}
rotationAxis = new Vector3D(1, 0, 0);
if (direction == RotateDirection.Up)
{
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 == RotateDirection.Right || direction == RotateDirection.Up)
endAngle = -endAngle;
ModelVisual3D m1, m2;
viewport.Children.Add(m1 = MakeSide(oldContent, new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), endAngle, rotationCenter, rotationAxis, null));
viewport.Children.Add(m2 = MakeSide(newContent, origin, u, v, endAngle, rotationCenter, rotationAxis, delegate
{
EndTransition(transitionElement, oldContent, newContent);
}));
m1.Transform = m2.Transform = translation;
}
//Transitions should call this method when they are done
protected void EndTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
OnTransitionEnded(transitionElement, oldContent, newContent);
transitionElement.OnTransitionCompleted();
}
protected virtual void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
EndTransition(transitionElement, oldContent, newContent);
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
oldContent.BeginAnimation(UIElement.OpacityProperty, null);
}
/// <summary>
/// 将用户控件添加到主界面的某个区域内
/// </summary>
/// <param name="panel">主界面的区域</param>
/// <param name="userControlClassName">用户控件名</param>
protected void NavigationToUserPage(Panel panel, string userControlClassName)
{
parentVisualPanel = panel;
TransitionPresenter tp_Content = new TransitionPresenter();
//parentVisualPanel.Children.Clear();
foreach (UIElement u in parentVisualPanel.Children)
{
if (u.Uid == "tp_Content")
{
HaveTp_Content = true;
tp_Content = (TransitionPresenter)u;
}
//DoubleAnimation da = new DoubleAnimation(0d, new Duration(TimeSpan.FromMilliseconds(1000)));
//u.BeginAnimation(OpacityProperty, da);
}
if (!HaveTp_Content)
{
tp_Content.Uid = "tp_Content";
tp_Content.RenderSize = new System.Windows.Size(panel.ActualWidth, panel.ActualHeight);
parentVisualPanel.Children.Add(tp_Content);
}
//tp_Content.Transition = transitions[2];
foreach (var item in transitions)
{
Transition transition = (Transition)item;
if (TextSearch.GetText(transition) == transitionName.ToString())
{
tp_Content.Transition = transition;
}
}
foreach (var control in UserControlList)
{
if (control.GetType().FullName.ToString().Equals(userControlClassName))
{
BaseUserControl userControl = (BaseUserControl)control;
da_Completed();
CurrentUserControl = userControl;
CurrentUserControlName = userControlClassName;
userControl.VisualPanel = parentVisualPanel;
tp_Content.Content = userControl;
userControl.ShiftUI(); //每次执行切换界面必须执行这个函数
}
}
}
protected virtual void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
EndTransition(transitionElement, oldContent, newContent);
}
//Transitions can override this to perform cleanup at the end of the transition
protected virtual void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
}
// Called when an element is Removed from the TransitionPresenter's visual tree
protected internal virtual void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
EndTransition(transitionElement, oldContent, newContent);
}
private static void OnContentChanged(object element, DependencyPropertyChangedEventArgs e)
{
TransitionPresenter te = (TransitionPresenter)element;
te.BeginTransition();
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
Storyboard oldStoryboard = (Storyboard)oldContent.GetValue(OldContentStoryboardProperty);
if (oldStoryboard != null)
oldStoryboard.Stop(oldContent);
oldContent.ClearValue(ContentPresenter.StyleProperty);
Storyboard newStoryboard = (Storyboard)newContent.GetValue(NewContentStoryboardProperty);
if (newStoryboard != null)
newStoryboard.Stop(newContent);
newContent.ClearValue(ContentPresenter.StyleProperty);
}
private static void OnContentTemplateSelectorChanged(object element, DependencyPropertyChangedEventArgs e)
{
TransitionPresenter te = (TransitionPresenter)element;
te.CurrentContentPresenter.ContentTemplateSelector = (DataTemplateSelector)e.NewValue;
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Size size = transitionElement.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;
VisualBrush clone = new VisualBrush(oldContent);
geometry.Material = new DiffuseMaterial(clone);
ModelVisual3D model = new ModelVisual3D();
model.Content = geometry;
viewport.Children.Add(model);
Vector3D axis;
Point3D center = new Point3D();
switch (Direction)
{
case RotateDirection.Left:
axis = new Vector3D(0, 1, 0);
break;
case RotateDirection.Right:
axis = new Vector3D(0, -1, 0);
center = new Point3D(size.Width, 0, 0);
break;
case RotateDirection.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);
DoubleAnimation da = new DoubleAnimation(0, Duration);
clone.BeginAnimation(Brush.OpacityProperty, da);
da = new DoubleAnimation(90, Duration);
da.Completed += delegate
{
EndTransition(transitionElement, oldContent, newContent);
};
rotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, da);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
int xparticles = 15, yparticles = 15;
Size size = transitionElement.RenderSize;
if (size.Width > size.Height)
yparticles = (int)(xparticles * size.Height / size.Width);
else
xparticles = (int)(yparticles * size.Width / size.Height);
MeshGeometry3D mesh = CreateMesh(new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
double ustep = size.Width / (xparticles - 1), vstep = size.Height / (yparticles - 1);
Point3DCollection points = mesh.Positions;
Random rand = Util.Rnd;
// 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);
Point3DCollection oldPoints = points.Clone();
Vector3D acceleration = new Vector3D(0, 700, 0); //gravity
double timeStep = 1.0 / 60.0;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep);
bool fading = false;
double time = 0;
double slideVelocity = size.Width / 2.0;
double windScale = 30 * size.Width * size.Height;
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 > size.Height)
newPoint.Y = size.Height;
oldPoints[i] = newPoint;
}
//for (int j = 0; j < 5; j++)
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(Math.Max(0, i * ustep - slideVelocity * time * i / (xparticles - 1)), 0, 0);
if (!fading && points[points.Count - yparticles].X < size.Width / 2)
{
fading = true;
DoubleAnimation da = new DoubleAnimation(0, new Duration(TimeSpan.FromSeconds(1.5)));
da.Completed += delegate
{
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
};
cloneBrush.BeginAnimation(Brush.OpacityProperty, da);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
timer.Start();
GeometryModel3D geo = new GeometryModel3D(mesh, clone);
geo.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
int xparticles = 10, yparticles = 10;
Size size = transitionElement.RenderSize;
if (size.Width > size.Height)
{
yparticles = (int)(xparticles * size.Height / size.Width);
}
else
{
xparticles = (int)(yparticles * size.Width / size.Height);
}
MeshGeometry3D mesh = CreateMesh(new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
double ustep = size.Width / (xparticles - 1), vstep = size.Height / (yparticles - 1);
Point3DCollection points = mesh.Positions;
Point3DCollection oldPoints = points.Clone();
double timeStep = 1.0 / 30.0;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep);
double time = 0;
double duration = 2;
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 > size.Height)
{
newPoint.Y = size.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, size.Height, oldPoints[i].Z);
}
if (b == 0)
{
oldPoints[i] = new Point3D(0, a * size.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(size.Width * Math.Cos(angle), a * size.Height / (yparticles - 1), -size.Width * Math.Sin(angle));
}
}
}
if (time > (duration - 0))
{
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
timer.Start();
GeometryModel3D geo = new GeometryModel3D(mesh, clone);
geo.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
}
protected override void BeginTransition3D(
TransitionPresenter transitionElement,
ContentPresenter oldContent,
ContentPresenter newContent,
Viewport3D viewport)
{
Size size = transitionElement.RenderSize;
Point mouse2D = Mouse.GetPosition(transitionElement);
Point3D mouse = new Point3D(mouse2D.X, mouse2D.Y, 0.5 * size.Width);
int xparticles = 10, yparticles = 10;
if (size.Width > size.Height) {
yparticles = (int)(xparticles * size.Height / size.Width);
}
else {
xparticles = (int)(yparticles * size.Width / size.Height);
}
double sx = 1.0 / xparticles, sy = 1.0 / yparticles;
Vector3D u = new Vector3D(size.Width * sx, 0, 0);
Vector3D v = new Vector3D(0, size.Height * sy, 0);
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
Vector3D[] velocities = new Vector3D[xparticles * yparticles];
Vector3D[] angularVelocities = new Vector3D[xparticles * yparticles];
Point3D[] centers = new Point3D[xparticles * yparticles];
Point3DCollection positions = new Point3DCollection(4 * xparticles * yparticles);
PointCollection textures = new PointCollection(4 * xparticles * yparticles);
Int32Collection triangles = new Int32Collection(6 * xparticles * yparticles);
int n = 0;
for (int i = 0; i < xparticles; i++)
for (int j = 0; j < yparticles; j++) {
Point3D topleft = (Point3D)(i * u + j * v);
positions.Add(topleft);
positions.Add(topleft + u);
positions.Add(topleft + u + v);
positions.Add(topleft + v);
textures.Add(new Point(i * sx, j * sy));
textures.Add(new Point((i + 1) * sx, j * sy));
textures.Add(new Point((i + 1) * sx, (j + 1) * sy));
textures.Add(new Point(i * sx, (j + 1) * sy));
triangles.Add(n);
triangles.Add(n + 2);
triangles.Add(n + 1);
triangles.Add(n);
triangles.Add(n + 3);
triangles.Add(n + 2);
Vector3D f0 = positions[n] - mouse;
Vector3D f1 = positions[n + 1] - mouse;
Vector3D f2 = positions[n + 2] - mouse;
Vector3D f3 = positions[n + 3] - mouse;
f0 = f0 / f0.LengthSquared;
f1 = f1 / f1.LengthSquared;
f2 = f2 / f2.LengthSquared;
f3 = f3 / f3.LengthSquared;
velocities[n / 4] = 2 * size.Width * (f0 + f1 + f2 + f3);
Point3D center = centers[n / 4] = (Point3D)((i + 0.5) * u + (j + 0.5) * v);
angularVelocities[n / 4] = 200 * (Vector3D.CrossProduct(f0, positions[n] - center) +
Vector3D.CrossProduct(f1, positions[n + 1] - center) +
Vector3D.CrossProduct(f2, positions[n + 2] - center) +
Vector3D.CrossProduct(f3, positions[n + 3] - center));
n += 4;
}
MeshGeometry3D mesh = new MeshGeometry3D();
mesh.Positions = positions;
mesh.TextureCoordinates = textures;
mesh.TriangleIndices = triangles;
GeometryModel3D geometryModel = new GeometryModel3D(mesh, clone);
geometryModel.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geometryModel;
viewport.Children.Add(model);
DispatcherTimer timer = new DispatcherTimer();
int t = 0;
double opacityDelta = 1.0 / (Duration.TimeSpan.Seconds * 60.0);
timer.Interval = TimeSpan.FromSeconds(1.0 / 60.0);
timer.Tick += delegate {
t++;
cloneBrush.Opacity = 1 - t * opacityDelta;
if (cloneBrush.Opacity < opacityDelta) {
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
return;
}
mesh.Positions = null;
AxisAngleRotation3D axisAngle = new AxisAngleRotation3D();
RotateTransform3D rotation = new RotateTransform3D(axisAngle, new Point3D());
for (int i = 0; i < positions.Count; i += 4) {
Vector3D velocity = velocities[i / 4];
axisAngle.Axis = angularVelocities[i / 4];
axisAngle.Angle = angularVelocities[i / 4].Length;
rotation.CenterX = centers[i / 4].X;
rotation.CenterY = centers[i / 4].Y;
rotation.CenterZ = centers[i / 4].Z;
positions[i] = rotation.Transform(positions[i]) + velocity;
positions[i + 1] = rotation.Transform(positions[i + 1]) + velocity;
positions[i + 2] = rotation.Transform(positions[i + 2]) + velocity;
positions[i + 3] = rotation.Transform(positions[i + 3]) + velocity;
centers[i / 4] += velocity;
}
mesh.Positions = positions;
};
timer.Start();
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
newContent.ClearValue(ContentPresenter.RenderTransformProperty);
oldContent.ClearValue(ContentPresenter.RenderTransformProperty);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
Size size = transitionElement.RenderSize;
Point3D origin = new Point3D(); // origin of 2nd face
Vector3D u = new Vector3D(), v = new Vector3D(); // u & v vectors of 2nd face
double angle = Angle;
Point3D rotationCenter;
Vector3D rotationAxis;
RotateDirection direction = Direction;
TranslateTransform3D translation = null;
double angleRads = Angle * Math.PI / 180;
if (direction == RotateDirection.Left || direction == RotateDirection.Right)
{
if (Contained)
{
rotationCenter = new Point3D(direction == RotateDirection.Left ? size.Width : 0, 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation x = new DoubleAnimation(direction == RotateDirection.Left ? -size.Width : size.Width, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetXProperty, x);
}
else
{
rotationCenter = new Point3D(size.Width / 2, 0, size.Width / 2 * Math.Tan(angle / 2 * Math.PI / 180));
}
rotationAxis = new Vector3D(0, 1, 0);
if (direction == RotateDirection.Left)
{
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
{
if (Contained)
{
rotationCenter = new Point3D(0, direction == RotateDirection.Up ? size.Height : 0, 0);
translation = new TranslateTransform3D();
DoubleAnimation y = new DoubleAnimation(direction == RotateDirection.Up ? -size.Height : size.Height, Duration);
translation.BeginAnimation(TranslateTransform3D.OffsetYProperty, y);
}
else
{
rotationCenter = new Point3D(0, size.Height / 2, size.Height / 2 * Math.Tan(angle / 2 * Math.PI / 180));
}
rotationAxis = new Vector3D(1, 0, 0);
if (direction == RotateDirection.Up)
{
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 == RotateDirection.Right || direction == RotateDirection.Up)
{
endAngle = -endAngle;
}
ModelVisual3D m1, m2;
viewport.Children.Add(m1 = MakeSide(oldContent, new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), endAngle, rotationCenter, rotationAxis, null));
viewport.Children.Add(m2 = MakeSide(newContent, origin, u, v, endAngle, rotationCenter, rotationAxis, delegate
{
EndTransition(transitionElement, oldContent, newContent);
}));
m1.Transform = m2.Transform = translation;
}
// Called when an element is Removed from the TransitionPresenter's visual tree
protected internal virtual void BeginTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
EndTransition(transitionElement, oldContent, newContent);
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
oldContent.BeginAnimation(UIElement.OpacityProperty, null);
}
//Transitions should call this method when they are done
protected void EndTransition(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
OnTransitionEnded(transitionElement, oldContent, newContent);
transitionElement.OnTransitionCompleted();
}
protected override void OnTransitionEnded(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent)
{
newContent.ClearValue(ContentPresenter.RenderTransformProperty);
oldContent.ClearValue(ContentPresenter.RenderTransformProperty);
}
protected override void BeginTransition3D(TransitionPresenter transitionElement, ContentPresenter oldContent, ContentPresenter newContent, Viewport3D viewport)
{
int xparticles = 15, yparticles = 15;
Size size = transitionElement.RenderSize;
if (size.Width > size.Height)
{
yparticles = (int)(xparticles * size.Height / size.Width);
}
else
{
xparticles = (int)(yparticles * size.Width / size.Height);
}
MeshGeometry3D mesh = CreateMesh(new Point3D(), new Vector3D(size.Width, 0, 0), new Vector3D(0, size.Height, 0), xparticles - 1, yparticles - 1, new Rect(0, 0, 1, 1));
Brush cloneBrush = CreateBrush(oldContent);
Material clone = new DiffuseMaterial(cloneBrush);
double ustep = size.Width / (xparticles - 1), vstep = size.Height / (yparticles - 1);
Point3DCollection points = mesh.Positions;
Random rand = Util.Rnd;
// 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);
}
Point3DCollection oldPoints = points.Clone();
Vector3D acceleration = new Vector3D(0, 700, 0); //gravity
double timeStep = 1.0 / 60.0;
DispatcherTimer timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromSeconds(timeStep);
bool fading = false;
double time = 0;
double slideVelocity = size.Width / 2.0;
double windScale = 30 * size.Width * size.Height;
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 > size.Height)
{
newPoint.Y = size.Height;
}
oldPoints[i] = newPoint;
}
//for (int j = 0; j < 5; j++)
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(Math.Max(0, i * ustep - slideVelocity * time * i / (xparticles - 1)), 0, 0);
}
if (!fading && points[points.Count - yparticles].X < size.Width / 2)
{
fading = true;
DoubleAnimation da = new DoubleAnimation(0, new Duration(TimeSpan.FromSeconds(1.5)));
da.Completed += delegate
{
timer.Stop();
EndTransition(transitionElement, oldContent, newContent);
};
cloneBrush.BeginAnimation(Brush.OpacityProperty, da);
}
// Swap position arrays
mesh.Positions = oldPoints;
oldPoints = points;
points = mesh.Positions;
};
timer.Start();
GeometryModel3D geo = new GeometryModel3D(mesh, clone);
geo.BackMaterial = clone;
ModelVisual3D model = new ModelVisual3D();
model.Content = geo;
viewport.Children.Add(model);
}