public Node Insert(Rectangle rectangle)
{
// if this is not a leaf
if (this.left != null)
{
Node nodeLeft = this.left.Insert(rectangle);
if (nodeLeft != null)
{
return(nodeLeft);
}
return(this.right.Insert(rectangle));
}
// already a rectangle in this node
if (this.filled)
{
return(null);
}
// rectangle does not fit in bounds
if (!rectangle.FitsIn(this.Rectangle))
{
return(null);
}
// perfectly snug fit
if (rectangle.Compare(this.Rectangle) == 0)
{
this.filled = true;
return(this);
}
// split this node into two children
this.left = new Node();
this.right = new Node();
int diffWidth = this.Rectangle.Width - rectangle.Width;
int diffHeight = this.Rectangle.Height - rectangle.Height;
// either split horizontally or vertically
if (diffWidth > diffHeight)
{
this.left.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y, rectangle.Width, this.Rectangle.Height);
this.right.Rectangle = new Rectangle(this.Rectangle.X + rectangle.Width, this.Rectangle.Y, this.Rectangle.Width - rectangle.Width, this.Rectangle.Height);
}
else
{
this.left.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y, this.Rectangle.Width, rectangle.Height);
this.right.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y + rectangle.Height, this.Rectangle.Width, this.Rectangle.Height - rectangle.Height);
}
// insert into the left child node as a leaf
return(this.left.Insert(rectangle));
}
public Node Insert(Rectangle rectangle)
{
// if this is not a leaf
if (this.left != null)
{
Node nodeLeft = this.left.Insert(rectangle);
if (nodeLeft != null)
{
return nodeLeft;
}
return this.right.Insert(rectangle);
}
// already a rectangle in this node
if (this.filled)
{
return null;
}
// rectangle does not fit in bounds
if (!rectangle.FitsIn(this.Rectangle))
{
return null;
}
// perfectly snug fit
if (rectangle.Compare(this.Rectangle) == 0)
{
this.filled = true;
return this;
}
// split this node into two children
this.left = new Node();
this.right = new Node();
int diffWidth = this.Rectangle.Width - rectangle.Width;
int diffHeight = this.Rectangle.Height - rectangle.Height;
// either split horizontally or vertically
if (diffWidth > diffHeight)
{
this.left.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y, rectangle.Width, this.Rectangle.Height);
this.right.Rectangle = new Rectangle(this.Rectangle.X + rectangle.Width, this.Rectangle.Y, this.Rectangle.Width - rectangle.Width, this.Rectangle.Height);
}
else
{
this.left.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y, this.Rectangle.Width, rectangle.Height);
this.right.Rectangle = new Rectangle(this.Rectangle.X, this.Rectangle.Y + rectangle.Height, this.Rectangle.Width, this.Rectangle.Height - rectangle.Height);
}
// insert into the left child node as a leaf
return this.left.Insert(rectangle);
}
