public AnchorPoint(DGNode owner, float dirX, float dirY)
{
if (owner == null)
{
throw new ArgumentNullException("owner");
}
this.Edges = new List<DGEdge>();
this.mOwner = owner;
this.SetParent(owner);
this.mDirX = dirX;
this.mDirY = dirY;
this.UpdateBoundingBox();
}
/// <summary>
/// If the right-most node is out of the drawing area, doubles the width.
/// If the bottom-most node is out of the drawing area, doubles the height;
/// </summary>
private void CheckSizing()
{
if (nodes != null && nodes.Any())
{
DGNode rightMostNode = nodes.Aggregate((node1, node2) => node1.Location.X > node2.Location.X ? node1 : node2);
DGNode bottomMostNode = nodes.Aggregate((node1, node2) => node1.Location.Y > node2.Location.Y ? node1 : node2);
if (rightMostNode.Location.X + rightMostNode.Width >= drawable.Allocation.Width)
{
drawable.WidthRequest = 2 * drawable.Allocation.Width;
}
// I Assume that the nodes are circles such that width = height.
if (bottomMostNode.Location.Y + bottomMostNode.Width >= drawable.Allocation.Height)
{
drawable.HeightRequest = 2 * drawable.Allocation.Height;
}
}
}
