public IEnumerable <Rectangle> GetEnclosing(Rectangle rectangle)
{
var projection = rectangle.XProjection;
var otherProjection = rectangle.YProjection;
if (!BoundingSegment.Contains(projection))
{
throw new ArgumentOutOfRangeException();
}
if (projection.Beginning == BoundingSegment.Beginning || projection.End == BoundingSegment.End)
{
return(Enumerable.Empty <Rectangle>());
}
var results = new List <Rectangle>();
var node = (Node)Root;
while (node != null)
{
if (projection.End < node.Key)
{
results.AddRange(node.IntersectingRectangles.GetOverlappingCorners(
new Rectangle(new Segment(BoundingSegment.Beginning, (byte)(projection.Beginning - 1)),
otherProjection)));
node = (Node)node.Left;
}
else if (projection.Beginning > node.Key)
{
results.AddRange(node.IntersectingRectangles.GetOverlappingCorners(
new Rectangle(new Segment((byte)(projection.End + 1), BoundingSegment.End), otherProjection)));
node = (Node)node.Right;
}
else
{
results.AddRange(node.IntersectingRectangles
.GetOverlappingCorners(new Rectangle(
new Segment(BoundingSegment.Beginning, (byte)(projection.Beginning - 1)), otherProjection))
.Where(r => r.BottomRight.X > projection.End));
break;
}
}
return(results);
}
protected bool Remove(Segment projection, Rectangle rectangle)
{
if (projection.Length < 3)
{
// Ignore short segments as they can't enclose anything
return(true);
}
var node = Root;
if (!BoundingSegment.Contains(projection))
{
throw new ArgumentOutOfRangeException();
}
while (true)
{
if (node == null)
{
return(false);
}
if (projection.End < node.Key)
{
node = node.Left;
continue;
}
if (projection.Beginning > node.Key)
{
node = node.Right;
continue;
}
return(SubtreeRemove(rectangle, node));
}
}
