/// <summary>
/// Set position of given vertex. Position can't be out of range of this canvas (it's modified, when this situation occurs).
/// Left property has to be between 0 and width of this canvas and top property has to be between 0 and height of this canvas.
/// </summary>
/// <param name="v">Target vertex</param>
/// <param name="p">Specified point</param>
/// <returns>true if vertex has been moved exactly to given point </returns>
public bool setPosition(Vertex v, VPoint p)
{
//Check whether the new point is equal to old point
if (v == null || !_graph.Vertices.Contains(v) || p == null)
{
return(false);
}
VPoint point = new VPoint();
bool okay = true;
if (p.X < 0)
{
point.X = 0; okay = false;
}
else
{
if (p.X > _width)
{
point.X = _width; okay = false;
}
else
{
point.X = p.X;
}
}
if (p.Top < 0)
{
point.Y = 0; okay = false;
}
else
{
if (p.Top > _height)
{
point.Y = _height; okay = false;
}
else
{
point.Y = p.Y;
}
}
_vertices[v] = point;
return(okay);
}
public void update(Vertex changedObject, ChangeType typeOfChange)
{
switch (typeOfChange)
{
case ChangeType.Added:
{
int w = _random.Next(_width);
int h = _random.Next(_height);
VPoint v = new VPoint(w, h);
_vertices[changedObject] = v;
break;
}
case ChangeType.Removed:
{
_vertices.Remove(changedObject);
break;
}
}
}
public bool setPosition(Vertex v, Point p)
{
VPoint vp = new VPoint(p.X, p.Y);
return(setPosition(v, vp));
}
public PartialMemento(Positions pos, Vertex v)
{
_position = pos;
_vertex = v;
_point = _position._vertices[v];
}