QuadTree<T> class

Constructors

QuadTree(OffsetFun<T> xFun, OffsetFun<T> yFun, num _x0, num _y0, num _x1, num _y1)

Properties

boundRect → Rect

no setter

data → List<T>

no setter

hashCode → int

The hash code for this object.

no setter, inherited

root → QuadNode?

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

size → int

no setter

xFun ↔ OffsetFun<T>

getter/setter pair

yFun ↔ OffsetFun<T>

getter/setter pair

Methods

add(T data) → QuadTree

addAll(List<T> data) → QuadTree<T>

copy() → QuadTree<T>

cover(num x, num y) → QuadTree<T>

each(VisitCallback<T> callback) → QuadTree<T>

eachAfter(VisitCallback<T> callback) → QuadTree<T>

extent(Rect rect) → QuadTree<T>

拓展四叉树范围 如果指定了area，则扩展四叉树以覆盖到指定的点[x0, y0, x1, y1] 并返回四叉树。 如果没有指定position，则返回四叉树当前的范围[x0, y0, x1, y1]，

find(int x, int y, [double? r]) → T?

返回离给定搜索半径的位置⟨x,y⟩最近的基准点。 如果没有指定半径，默认为无穷大。 如果在搜索范围内没有基准点，则返回未定义

leafCopy(QuadNode<T> leaf) → QuadNode<T>

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

remove(T d) → QuadTree<T>

removeAll(List<T> data) → QuadTree<T>

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

simple<T>(OffsetFun<T> xFun, OffsetFun<T> yFun, List<T> nodes) → QuadTree<T>