public bool Modify(IEnumerable <Point2D> newPosition)
{
if (!(Positions.Except(newPosition).Any() || newPosition.Except(Positions).Any()))
{
return(false);
}
var ev = BeforeMoved;
var eva = new Point2DEventArgs(newPosition);
if (ev != null)
{
ev.Invoke(this, eva);
}
if (eva.Abort)
{
return(false);
}
Positions = newPosition;
var ev2 = Moved;
if (ev2 != null)
{
ev2.Invoke(this, new Point2DEventArgs(newPosition));
}
return(true);
}
/// <summary>
/// Moves the thing in the direction of the specified vector
/// </summary>
public bool Move(Point2D vector)
{
var newPos = Positions.Select(p => p.Translate(vector)).ToList();
var ev = BeforeMoved;
var eva = new Point2DEventArgs(newPos);
if (ev != null)
{
ev.Invoke(this, eva);
}
if (eva.Abort)
{
return(false);
}
Positions = newPos;
var ev2 = Moved;
if (ev2 != null)
{
ev2.Invoke(this, new Point2DEventArgs(newPos));
}
if (_rotationalCentre.HasValue)
{
_rotationalCentre = _rotationalCentre.Value.Translate(vector);
}
return(true);
}
public bool Rotate(Point2D?origin = null, int angle = 90)
{
var o = origin.GetValueOrDefault(RotationalCentre);
var newPos = Positions.Select(p => p.Rotate(o, angle)).ToList();
var ev = BeforeMoved;
var eva = new Point2DEventArgs(newPos);
if (ev != null)
{
ev.Invoke(this, eva);
}
if (eva.Abort)
{
return(false);
}
Positions = newPos;
var ev2 = Moved;
if (ev2 != null)
{
ev2.Invoke(this, eva);
}
return(true);
}
