Documentation / @geoverse/core-libre / Polygon

Class: Polygon

Defined in: packages/core-libre/src/features/polygon.ts:20

多边形要素（GeoJSON Polygon，单外环）。

Extends

• GFeature

Constructors

Constructor

new Polygon(opts?): Polygon;

Defined in: packages/core-libre/src/features/polygon.ts:21

Parameters

opts?

PolygonOptions = {}

Returns

Polygon

Overrides

GFeature.constructor

Properties

geometry

protected geometry: Geometry;

Defined in: packages/core-libre/src/features/feature.ts:23

Inherited from

GFeature.geometry

---

gid

readonly gid: string;

Defined in: packages/core-libre/src/features/feature.ts:21

本库内部要素 id（写入 properties[GID_KEY]，供命中回查）

Inherited from

GFeature.gid

---

layer?

protected optional layer?: GVectorLayer;

Defined in: packages/core-libre/src/features/feature.ts:26

所属矢量图层（addFeature 时回填）

Inherited from

GFeature.layer

---

properties

protected properties: Record<string, unknown>;

Defined in: packages/core-libre/src/features/feature.ts:24

Inherited from

GFeature.properties

Accessors

cancelBubble

Get Signature

get cancelBubble(): boolean;

Defined in: packages/core-libre/src/features/feature.ts:180

是否阻止事件冒泡到下层要素

Returns

boolean

Inherited from

GFeature.cancelBubble

Methods

_dispatch()

_dispatch(evt): void;

Defined in: packages/core-libre/src/features/feature.ts:185

内部：由 GMap 派发命中事件

Parameters

evt

FeaturePointerEvent

Returns

void

Inherited from

GFeature._dispatch

---

_setLayer()

_setLayer(layer): void;

Defined in: packages/core-libre/src/features/feature.ts:190

内部：绑定/解绑所属图层

Parameters

layer

GVectorLayer | undefined

Returns

void

Inherited from

GFeature._setLayer

---

getFillColor()

getFillColor(): string | undefined;

Defined in: packages/core-libre/src/features/feature.ts:97

Returns

string | undefined

Inherited from

GFeature.getFillColor

---

getGeometry()

getGeometry(): Geometry;

Defined in: packages/core-libre/src/features/feature.ts:49

几何对象（GeoJSON，WGS-84 经纬度）

Returns

Geometry

Inherited from

GFeature.getGeometry

---

getId()

getId(): string;

Defined in: packages/core-libre/src/features/feature.ts:44

要素 id

Returns

string

Inherited from

GFeature.getId

---

getPath()

getPath(): Position[] | null;

Defined in: packages/core-libre/src/features/feature.ts:142

获取路径坐标（线返回坐标串；面返回外环）

Returns

Position[] | null

Inherited from

GFeature.getPath

---

getPositions()

getPositions(): Position | null;

Defined in: packages/core-libre/src/features/feature.ts:120

获取点坐标（WGS-84）

Returns

Position | null

Inherited from

GFeature.getPositions

---

getProperty()

getProperty(key): unknown;

Defined in: packages/core-libre/src/features/feature.ts:76

读取任意属性

Parameters

key

string

Returns

unknown

Inherited from

GFeature.getProperty

---

getStrokeColor()

getStrokeColor(): string | undefined;

Defined in: packages/core-libre/src/features/feature.ts:85

Returns

string | undefined

Inherited from

GFeature.getStrokeColor

---

getStrokeWeight()

getStrokeWeight(): number | undefined;

Defined in: packages/core-libre/src/features/feature.ts:91

Returns

number | undefined

Inherited from

GFeature.getStrokeWeight

---

getType()

getType(): 
  | "Point"
  | "MultiPoint"
  | "LineString"
  | "MultiLineString"
  | "Polygon"
  | "MultiPolygon"
  | "GeometryCollection";

Defined in: packages/core-libre/src/features/feature.ts:54

几何类型（Point / LineString / Polygon …）

Returns

| "Point" | "MultiPoint" | "LineString" | "MultiLineString" | "Polygon" | "MultiPolygon" | "GeometryCollection"

Inherited from

GFeature.getType

---

getVisible()

getVisible(): boolean;

Defined in: packages/core-libre/src/features/feature.ts:105

Returns

boolean

Inherited from

GFeature.getVisible

---

off()

off(type, listener): void;

Defined in: packages/core-libre/src/features/feature.ts:172

取消订阅

Parameters

type

FeaturePointerEventType

listener

(evt) => void

Returns

void

Inherited from

GFeature.off

---

on()

on(type, listener): () => void;

Defined in: packages/core-libre/src/features/feature.ts:158

订阅要素级交互事件（click / mouseover / mouseout）。 返回取消订阅函数。仅在要素所属图层位于 GMap 中时触发。

Parameters

type

FeaturePointerEventType

listener

(evt) => void

Returns

() => void

Inherited from

GFeature.on

---

refresh()

protected refresh(): void;

Defined in: packages/core-libre/src/features/feature.ts:195

触发所属图层重新下发数据

Returns

void

Inherited from

GFeature.refresh

---

setFillColor()

setFillColor(color): void;

Defined in: packages/core-libre/src/features/feature.ts:94

Parameters

color

string

Returns

void

Inherited from

GFeature.setFillColor

---

setPath()

setPath(path): void;

Defined in: packages/core-libre/src/features/feature.ts:131

设置路径坐标（线/面）。Polygon 沿用 core 的"单外环"约定（number[][]）， 内部包一层环数组写入 GeoJSON Polygon 的 coordinates。

Parameters

path

Position[]

Returns

void

Inherited from

GFeature.setPath

---

setPositions()

setPositions(position): void;

Defined in: packages/core-libre/src/features/feature.ts:112

设置点坐标（WGS-84；非点几何由子类决定语义）

Parameters

position

Position

Returns

void

Inherited from

GFeature.setPositions

---

setProperty()

setProperty(key, value): void;

Defined in: packages/core-libre/src/features/feature.ts:70

设置任意属性（会触发所属图层刷新）

Parameters

key

string

value

unknown

Returns

void

Inherited from

GFeature.setProperty

---

setStrokeColor()

setStrokeColor(color): void;

Defined in: packages/core-libre/src/features/feature.ts:82

Parameters

color

string

Returns

void

Inherited from

GFeature.setStrokeColor

---

setStrokeWeight()

setStrokeWeight(width): void;

Defined in: packages/core-libre/src/features/feature.ts:88

Parameters

width

number

Returns

void

Inherited from

GFeature.setStrokeWeight

---

setVisible()

setVisible(visible): void;

Defined in: packages/core-libre/src/features/feature.ts:102

显隐：通过 HIDDEN_KEY 属性 + 图层过滤实现

Parameters

visible

boolean

Returns

void

Inherited from

GFeature.setVisible

---

toGeoJSON()

toGeoJSON(): Feature;

Defined in: packages/core-libre/src/features/feature.ts:59

序列化为 GeoJSON Feature（注入内部 gid 属性）

Returns

Feature

Inherited from

GFeature.toGeoJSON