public ObjectLink(Vector3 position, LinkableObject parent, LinkableObject child)
: base(position)
{
Parent = parent;
Child = child;
Parent.Links.Add(this);
Child.Links.Add(this);
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
base.OnMouseUp(e);
_mouseDown = false;
if (_line != null)
{
// you are dragging a line
if (_line is AttackLine)
{
if (_mouseOver != null)
{
// you are currently over a planet
if (_mouseOver != _attackFrom)
{
// you are on a different planet
LinkObjects(_attackFrom, _mouseOver);
}
}
}
else
{
// do cutting here
foreach (ObjectLink link in scene.Objects.Where(o => o is ObjectLink))
{
var isIntersect
= LinesIntersect(_line.Position, _line.To,
link.Parent.Position, link.Child.Position);
if (isIntersect)
{
Console.WriteLine("Intersect");
}
}
}
scene.Remove(_line);
_line = null;
_attackFrom = null;
}
}
protected override void OnMouseDown(MouseButtonEventArgs e)
{
base.OnMouseDown(e);
_mouseDown = true;
if (_mouseOver != null)
{
_line = new AttackLine(_mouseOver.Position, _mouseOver.Position);
_attackFrom = _mouseOver;
}
else
{
_line = new CutLine(_mouseWorldLocation, _mouseWorldLocation);
}
scene.Add(_line);
}
private void LinkObjects(LinkableObject parent, LinkableObject child)
{
bool alreadyLinked = false;
foreach (var existingLink in parent.Links)
{
if (existingLink.Child == child)
{
alreadyLinked = true;
break;
}
}
if (!alreadyLinked)
{
var newLink = new ObjectLink(
Vector3.Zero,
_attackFrom,
_mouseOver);
scene.Add(newLink);
}
}