public List <CKAnnotation> AnnotationsInRect(MKMapRect rect)
{
var result = new List <CKAnnotation>();
if (rect.Spans180thMeridian)
{
CKTree.FindInRange(this.Tree, rect.Remainder(), (IMKAnnotation annotation) =>
{
if (this.Delegate.AnnotationTree(this, (CKAnnotation)annotation))
{
result.Add((CKAnnotation)annotation);
}
});
rect = MKMapRect.Intersection(rect, new MKMapRect().World);
}
CKTree.FindInRange(this.Tree, rect, (IMKAnnotation annotation) =>
{
if (this.Delegate.AnnotationTree(this, (CKAnnotation)annotation))
{
result.Add((CKAnnotation)annotation);
}
});
return(result);
}
public static CKTree New(MKMapRect rect, int capacity)
{
CKTree tree = new CKTree();
tree.Root = CKNode.New(rect, capacity);
return(tree);
}
public static void Cleart(CKTree tree)
{
var bound = tree.Root.Bound;
var capacity = tree.Root.Capacity;
CKNode.NodeFree(tree.Root);
tree.Root = CKNode.New(bound, capacity);
}
public static void Free(CKTree tree)
{
if (tree.Root != null)
{
CKNode.NodeFree(tree.Root);
tree = null;
}
}
public CKQuadTree(List <CKAnnotation> annotations)
{
this.Annotations = annotations;
this.Tree = CKTree.New(new MKMapRect().World, 4);
foreach (var annotation in this.Annotations)
{
CKTree.Insert(this.Tree, annotation);
}
}
public static void FindInRange(CKTree tree, MKMapRect range, Action <IMKAnnotation> find)
{
CKNode.GetInRange(tree.Root, range, find);
}
public static void Remove(CKTree tree, MKAnnotation annotation)
{
CKNode.Remove(tree.Root, annotation);
}
public static void Insert(CKTree tree, MKAnnotation annotation)
{
CKNode.Insert(tree.Root, annotation);
}
