private void OnContactUp(object sender, ContactEventArgs e)
{
int id = e.Contact.Id;
Point localPoint = e.GetPosition(this);
HitTestResult test = VisualTreeHelper.HitTest(this, localPoint);
if (test != null)
{
MultitouchListItem item = ContainerFromElement(test.VisualHit) as MultitouchListItem;
if (item != null)
{
MakeUnselected(item);
e.Handled = true;
}
}
Joint joint;
if (contactJoints.TryGetValue(id, out joint))
{
CustomFixedHingeJoint fixedHinge = joint as CustomFixedHingeJoint;
if (fixedHinge != null)
{
fixedHinge.Lifetime.IsExpired = true;
contactJoints.Remove(id);
}
}
UpdateAdorner();
}
private void OnContactDown(object sender, ContactEventArgs e)
{
ContactInfo contact = e.Contact;
ContactInfoModel model = new ContactInfoModel(contact);
Point localPoint = e.GetPosition(this);
HitTestResult test = VisualTreeHelper.HitTest(this, localPoint);
MultitouchListItem item = ContainerFromElement(test.VisualHit) as MultitouchListItem;
if (item != null)
{
MakeSelected(item);
e.Handled = true;
if (physicsController != null)
{
Body body = physicsController.GetBody(item);
if (body != null)
{
Vector2D point = new Vector2D(localPoint.X, localPoint.Y);
if (!body.Shape.BroadPhaseDetectionOnly && body.Shape.CanGetIntersection)
{
Vector2D temp = body.Matrices.ToBody * point;
IntersectionInfo info;
if (body.Shape.TryGetIntersection(temp, out info))
{
CustomFixedHingeJoint joint = new CustomFixedHingeJoint(body, point, new Lifespan());
physicsController.Engine.AddJoint(joint);
contactJoints[model.Id] = joint;
}
}
}
}
}
UpdateAdorner();
}
private void OnContactMove(object sender, ContactEventArgs e)
{
ContactInfo contact = e.Contact;
Point localPoint = e.GetPosition(this);
HitTestResult hitTest = VisualTreeHelper.HitTest(this, localPoint);
MultitouchListItem item = ContainerFromElement(hitTest.VisualHit) as MultitouchListItem;
if (item != null)
{
Joint joint;
if (contactJoints.TryGetValue(contact.Id, out joint))
{
CustomFixedHingeJoint fixedHinge = joint as CustomFixedHingeJoint;
if (fixedHinge != null)
{
Vector2D point = fixedHinge.Anchor;
point.X = localPoint.X;
point.Y = localPoint.Y;
fixedHinge.Anchor = point;
}
}
e.Handled = true;
}
UpdateAdorner();
}
private void MakeSelected(MultitouchListItem item)
{
maxZ++;
if (maxZ >= int.MaxValue)
{
foreach (DependencyObject o in Items)
{
UIElement element = (UIElement)ContainerFromElement(o);
Canvas.SetZIndex(element, 0);
}
maxZ = 1;
}
Canvas.SetZIndex(item, maxZ);
item.Contacts++;
}
private void MakeUnselected(MultitouchListItem item)
{
item.Contacts--;
}