Functions

Graph

▸ Graph(serialized?: Serialized): object

具有深度优先搜索和拓扑排序的图数据结构。

example var graph = Graph() .addEdge("s", "t", 10) .addEdge("s", "y", 5) .addEdge("s", "y", 4) .addEdge("t", "y", 2) .addEdge("y", "t", 3) .addEdge("t", "x", 1) .addEdge("y", "x", 9) .addEdge("y", "z", 2) .addEdge("x", "z", 4) .addEdge("z", "x", 6); var res = graph.shortestPath("s", "z")

Parameters

Name	Type
serialized?	Serialized

Returns: object

Name	Type
addEdge	(u: NodeId, v: NodeId, weight?: EdgeWeight) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
addNode	(node: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
adjacent	(node: NodeId) => NodeId[]
depthFirstSearch	(sourceNodes?: NodeId[], includeSourceNodes: boolean, errorOnCycle: boolean) => string[]
deserialize	(serialized: Serialized) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
getEdgeWeight	(u: NodeId, v: NodeId) => EdgeWeight
hasCycle	() => boolean
hasEdge	(u: NodeId, v: NodeId) => boolean
indegree	(node: NodeId) => number
lowestCommonAncestors	(node1: NodeId, node2: NodeId) => string[]
nodes	() => NodeId[]
outdegree	(node: NodeId) => number
removeEdge	(u: NodeId, v: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
removeNode	(node: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
serialize	() => Serialized
setEdgeWeight	(u: NodeId, v: NodeId, weight: EdgeWeight) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
shortestPath	(source: NodeId, destination: NodeId) => string[] & { weight?: number }
topologicalSort	(sourceNodes?: NodeId[], includeSourceNodes: boolean) => string[]

---

RandomID

▸ RandomID(length?: number): string

生成随机ID

Parameters

Name	Type
length?	number

Returns: string

---

Scene

▸ Scene(L7: any, map: Map, option?: object): object

L7图层，可参考https://l7.antv.vision/. 返回一个场景对象

Parameters

Name	Type	Description
L7	any	L7命名空间
map	Map
option?	object

Returns: object

Name	Type
addControl	(ctr: any) => void
addFontFace	(fontFamily: string, fontPath: string) => void
addIconFont	(name: string, fontUnicode: string) => void
addIconFontGlyphs	(fontFamily: string, glyphs: any[]) => void
addIconFonts	(options: string[][]) => void
addImage	(id: string, img: any) => void
addLayer	(layer: any) => void
addMarker	(marker: any) => void
addMarkerLayer	(layer: any) => void
addPopup	(popup: any) => void
containerToLngLat	(pixel: any) => any
destroy	() => void
diasbleShaderPick	() => void
enableShaderPick	() => void
exportMap	(type?: "png" | "jpg") => string
exportPng	(type?: "png" | "jpg") => string
fitBounds	(bound: any, options?: unknown) => void
getBounds	() => any
getCenter	(options?: any) => any
getContainer	() => null | HTMLElement
getControlByName	(name: string) => any
getLayer	(id: string) => any
getLayerByName	(name: string) => any
getLayers	() => any[]
getMapCanvasContainer	() => HTMLElement
getMapContainer	() => null | HTMLElement
getMapService	() => any
getMaxZoom	() => number
getMinZoom	() => number
getPitch	() => number
getPointSizeRange	() => Float32Array
getRotation	() => number
getServiceContainer	() => any
getSize	() => [number, number]
getType	() => string
getZoom	() => number
hasImage	(id: string) => boolean
lngLatToContainer	(lnglat: any) => any
lngLatToPixel	(lnglat: any) => any
off	(type: string, handle: (...args: any[]) => void) => void
on	(type: string, handle: (...args: any[]) => void) => void
once	(type: string, handle: (...args: any[]) => void) => void
panBy	(x: number, y: number) => void
panTo	(p: any) => void
pixelToLngLat	(pixel: any) => any
registerPostProcessingPass	(constructor: (...args: any[]) => any, name: string) => void
registerRenderService	(render: any) => void
removeAllLayer	() => void
removeAllMakers	() => void
removeControl	(ctr: any) => void
removeImage	(id: string) => void
removeLayer	(layer: any, parentLayer?: any) => void
removeMarkerLayer	(layer: any) => void
render	() => void
setBgColor	(color: string) => void
setCenter	(center: [number, number], options?: any) => void
setEnableRender	(flag: boolean) => void
setMapStatus	(options: Partial<any>) => void
setMapStyle	(style: any) => void
setPitch	(pitch: number) => void
setRotation	(rotation: number) => void
setZoom	(zoom: number) => void
setZoomAndCenter	(zoom: number, center: any) => void
zoomIn	() => void
zoomOut	() => void

---

WorkerExpose

▸ WorkerExpose(target: any): void

Parameters

Name	Type
target	any

Returns: void

---

WorkerLink

▸ WorkerLink(worker: Worker): any

和一个Worker相关联

Parameters

Name	Type
worker	Worker

Returns: any

---

WorkerProxy

▸ WorkerProxy(obj: Function | string, funcContext?: Record<string, Function | string>): Function

将独立函数/类移动到工作线程的一种非常简单的方法。 或者，将 worker 中的对象或函数暴露给主线程。 所有调用都是异步的。与 async/await 配合使用效果很好

Example:

function busyAdd(a, b) {
 let st = Date.now();
 while (true) {
   if ((Date.now() - st) > 2000) break;
 }
 return a + b;
}

(async () => {
 let workerAdd = vjmap.WorkerProxy(busyAdd);
 console.log(await workerAdd(10, 20)); //30
 // the busyAdd is executed in a worker so
 // the UI does not get blocked
})();

class Adder {
constructor() {
  this.count = 0;
}
add(a, b) {
 this.count++;
  return a + b;
}
}

(async () => {
let WAdder = vjmap.WorkerProxy(Adder);
let a = await new WAdder(); // instance created/running in worker
console.log(await a.count); // 0
console.log(await a.add(10, 20)); // 30
console.log(await a.count); // 1
})();

// or:
// worker.js

importScripts('https://cdn.jsdelivr.net/npm/moment@2.20.1/moment.min.js', '../dist/workly.js');
function friendlyTime(value) {
return moment(value).calendar(null, {
  sameDay: function (now) {
   if (now - this < 1000 * 60) {
      return "[Just now]";
   } else if (now - this < 1000 * 60 * 60) {
      return "[" + Math.round((now - this) / (1000 * 60)) + " mins ago]";
   } else {
     return '[Today at] LT'
   }
 }
});
}
vjmap.WorkerExpose(friendlyTime);
main.js

(async () => {
let w = vjmap.WorkerProxy("./worker.js");
let now = Date.now();
console.log(now);
console.log(await w(now));
console.log(await w(now - (24 * 60 * 60 * 1000)));
console.log(await w(now - (4 * 24 * 60 * 60 * 1000)));
})();

 function randAdd(a, b) {
     return randInt(a, b)  + 1000; // randInt这个函数是上下文传递进来的
 }

let randAddFunc = vjmap.WorkerProxy(randAdd, {
   randInt: vjmap.randInt // 把主进程库的函数做为上下文传进去
});
console.log(await randAddFunc(100, 300));

Parameters

Name	Type	Description
obj	Function | string
funcContext?	Record<string, Function | string>	函数上下文，如果传入的obj是函数的话，需要把obj中函数里调用的函数名称和函数方法传进来

Returns: Function

---

_getEdgeIntersection

▸ _getEdgeIntersection(a: GeoPoint, b: GeoPoint, code: number, bounds: GeoBounds): GeoPoint

Parameters

Name	Type
a	GeoPoint
b	GeoPoint
code	number
bounds	GeoBounds

Returns: GeoPoint

---

addScript

▸ addScript(scripts: ScriptDefaultOptions | ScriptDefaultOptions[]): Promise<unknown[]>

将脚本注入. 脚本选项信息: strategy: 用于运行 JavaScript 的策略。可以是inject、eval 或href。默认自动检测. injectLocation: 用于注入资源的位置的 document.querySelector 参数。默认为 head. async: 异步加载脚本 src: 脚本的来源

method

async

example // you can add multiple loads awit addScript([{ src: "https://code.jquery.com/jquery-3.5.0.js" }, { src: "https://code.jquery.com/jquery-3.2.0.js", async: true }, { src: "https://code.jquery.com/jquery-3.3.0.js", async: true, injectLocation: '#main div.test', }, { src: "https://code.jquery.com/jquery-3.4.0.js", strategy: 'eval', }, { // link tag // css autodetected src: "https://cdnjs.cloudflare.com/ajax/libs/bootstrap/5.0.2/css/bootstrap-grid.min.css", }])

Parameters

Name	Type	Description
scripts	ScriptDefaultOptions | ScriptDefaultOptions[]	Options for a script

Returns: Promise<unknown[]>

---

animateVectorLayer

▸ Const animateVectorLayer(map: Map, layerId: string, options?: IAnimateVectorLayerOptions, layerType?: number): IAnimateVectorLayerResult

创建矢量图层动画图层

Parameters

Name	Type	Default value	Description
map	Map	-	地图对象
layerId	string	-	矢量图层id
options	IAnimateVectorLayerOptions	{}	选项
layerType?	number	-	图层类型 0 线 1 填充 2 符号点

Returns: IAnimateVectorLayerResult

---

applyMixins

▸ applyMixins(derivedCtor: any, baseCtors: any[]): void

Copy methods and properties from one prototype into another.

see https://www.typescriptlang.org/docs/handbook/mixins.html

Parameters

Name	Type	Description
derivedCtor	any	Class to mix methods and properties into.
baseCtors	any[]	Class to take all methods and properties from.

Returns: void

---

applyMixinsWithoutProperties

▸ applyMixinsWithoutProperties(derivedCtor: any, baseCtors: any[]): void

Copy methods from one prototype into another.

see https://www.typescriptlang.org/docs/handbook/mixins.html

Parameters

Name	Type	Description
derivedCtor	any	Class to mix methods into.
baseCtors	any[]	Class to take all methods from.

Returns: void

---

bufferConvexPolygon

▸ bufferConvexPolygon(ring: GeoPoint[], buffer: number): GeoPoint[]

取一个凸环并通过在其周围应用缓冲区将其向外扩展。 此功能假定环是顺时针缠绕的。

Parameters

Name	Type
ring	GeoPoint[]
buffer	number

Returns: GeoPoint[]

---

buildTopoGraph

▸ buildTopoGraph(lines: { id?: string ; points: GeoPoint[] ; weight?: number }[], precision?: number, hasDirection?: boolean): object

根据多条多段线，建立topo

Parameters

Name	Type	Description
lines	{ id?: string ; points: GeoPoint[] ; weight?: number }[]	坐标，请转成几何坐标，再传入
precision?	number	误差，小数点后几位， 以为相同, 如果两个点的坐标距离小于此值，则认为是同一个节点
hasDirection?	boolean	是否考虑方向

Returns: object

Name	Type
graph	object
graph.addEdge	(u: NodeId, v: NodeId, weight?: EdgeWeight) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.addNode	(node: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.adjacent	(node: NodeId) => NodeId[]
graph.depthFirstSearch	(sourceNodes?: NodeId[], includeSourceNodes: boolean, errorOnCycle: boolean) => string[]
graph.deserialize	(serialized: Serialized) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.getEdgeWeight	(u: NodeId, v: NodeId) => EdgeWeight
graph.hasCycle	() => boolean
graph.hasEdge	(u: NodeId, v: NodeId) => boolean
graph.indegree	(node: NodeId) => number
graph.lowestCommonAncestors	(node1: NodeId, node2: NodeId) => string[]
graph.nodes	() => NodeId[]
graph.outdegree	(node: NodeId) => number
graph.removeEdge	(u: NodeId, v: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.removeNode	(node: NodeId) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.serialize	() => Serialized
graph.setEdgeWeight	(u: NodeId, v: NodeId, weight: EdgeWeight) => { addNode: (node: string) => ...; removeNode: (node: string) => ...; nodes: () => string[]; adjacent: (node: string) => string[]; addEdge: (u: string, v: string, weight?: number | undefined) => ...; ... 12 more ...; deserialize: (serialized: Serialized) => ...; }
graph.shortestPath	(source: NodeId, destination: NodeId) => string[] & { weight?: number }
graph.topologicalSort	(sourceNodes?: NodeId[], includeSourceNodes: boolean) => string[]
topo	any

, lowestCommonAncestors: (node1: NodeId, node2: NodeId) => NodeId[], shortestPath: (source: NodeId, destination: NodeId) => NodeId[] & {weight?: EdgeWeight}, setEdgeWeight: (u: NodeId, v: NodeId, weight: EdgeWeight) => {topologicalSort: (sourceNodes?: NodeId[], includeSourceNodes?: boolean) => ...[], addNode: (node: NodeId) => any, lowestCommonAncestors: (node1: NodeId, node2: NodeId) => ...[], shortestPath: (source: NodeId, destination: NodeId) => ... & ..., setEdgeWeight: (u: NodeId, v: NodeId, weight: EdgeWeight) => any, adjacent: (node: NodeId) => NodeId[], depthFirstSearch: (sourceNodes?: NodeId[], includeSourceNodes?: boolean, errorOnCycle?: boolean) => ...[], hasCycle: () => boolean, getEdgeWeight: (u: NodeId, v: NodeId) => EdgeWeight, serialize: () => Serialized, removeEdge: (u: NodeId, v: NodeId) => any, ...}, adjacent: (node: NodeId) => NodeId[], depthFirstSearch: (sourceNodes?: NodeId[], includeSourceNodes?: boolean, errorOnCycle?: boolean) => NodeId[], hasCycle: () => boolean, getEdgeWeight: (u: NodeId, v: NodeId) => EdgeWeight, serialize: () => Serialized, removeEdge: (u: NodeId, v: NodeId) => {topologicalSort: (sourceNodes?: NodeId[], includeSourceNodes?: boolean) => ...[], addNode: (node: NodeId) => any, lowestCommonAncestors: (node1: NodeId, node2: NodeId) => ...[], shortestPath: (source: NodeId, destination: NodeId) => ... & ..., setEdgeWeight: (u: NodeId, v: NodeId, weight: EdgeWeight) => any, adjacent: (node: NodeId) => NodeId[], depthFirstSearch: (sourceNodes?: NodeId[], includeSourceNodes?: boolean, errorOnCycle?: boolean) => ...[], hasCycle: () => boolean, getEdgeWeight: (u: NodeId, v: NodeId) => EdgeWeight, serialize: () => Serialized, removeEdge: (u: NodeId, v: NodeId) => any, ...}, ...}}}

---

buildTransformer

▸ buildTransformer(src: number[], dest: number[]): undefined | number[]

Usage:

const transformer = buildTransformer(
    [10, 44, 100, 44, 100, 300, 10, 300],
    [50, 54, 130, 14, 140, 330, 14, 220]
);

Parameters

Name	Type	Description
src	number[]	source four points, [x0, y0, x1, y1, x2, y2, x3, y3]
dest	number[]	destination four points, [x0, y0, x1, y1, x2, y2, x3, y3]

Returns: undefined | number[]

transformer If fail, return null/undefined.

---

buildTransformerMatrix3d

▸ buildTransformerMatrix3d(src: number[], dest: number[]): undefined | string

透视投影转3d css 矩阵 Usage:

const transformer = buildTransformerMatrix3d(
    [10, 44, 100, 44, 100, 300, 10, 300],
    [50, 54, 130, 14, 140, 330, 14, 220]
);

Parameters

Name	Type	Description
src	number[]	source four points, [x0, y0, x1, y1, x2, y2, x3, y3]
dest	number[]	destination four points, [x0, y0, x1, y1, x2, y2, x3, y3]

Returns: undefined | string

---

calcPolygonArea

▸ calcPolygonArea(points: GeoPoint[]): number

计算多边形面积

Parameters

Name	Type
points	GeoPoint[]

Returns: number

---

calculateSignedArea

▸ calculateSignedArea(ring: GeoPoint[]): number

返回多边形的有符号的面积。正区域为外环，具有顺时针绕组。负区域为内环，按逆时针顺序排列。

Parameters

Name	Type
ring	GeoPoint[]

Returns: number

---

clipPolygon

▸ clipPolygon(points: GeoPoint[], bounds: GeoBounds): GeoPoint[]

根据范围裁剪多边形

Parameters

Name	Type
points	GeoPoint[]
bounds	GeoBounds

Returns: GeoPoint[]

---

clipSegment

▸ clipSegment(a: GeoPoint, b: GeoPoint, bounds: GeoBounds): GeoPoint[] | Boolean

根据范围裁剪线段

Parameters

Name	Type
a	GeoPoint
b	GeoPoint
bounds	GeoBounds

Returns: GeoPoint[] | Boolean

---

cloneDeep

▸ cloneDeep<T>(obj: T): T

Deep clone of object.

Like JSON.parse(JSON.stringify(obj)), but supports basic javascript types (string, number, object), Date and RegExps and cycles.

Throws error if enounters object with prototype assuming that in general class instances cannot be reliably cloned by generic algorithm.

Type parameters

Name
T

Parameters

Name	Type
obj	T

Returns: T

---

closePolygon

▸ closePolygon(points: GeoPoint[]): GeoPoint[]

闭合多边形

Parameters

Name	Type
points	GeoPoint[]

Returns: GeoPoint[]

points

---

closestPointOnPolyline

▸ closestPointOnPolyline(p: GeoPoint, points: GeoPoint[]): object

点到多段线的最近点

Parameters

Name	Type
p	GeoPoint
points	GeoPoint[]

Returns: object

Name	Type
closestIndex	number
closestLength	number
closestPoint	GeoPoint
closestPrePointDist	number

---

closestPointOnPolylines

▸ closestPointOnPolylines(p: GeoPoint, lines: GeoPoint[][]): object

点到多条线的最近点

Parameters

Name	Type
p	GeoPoint
lines	GeoPoint[][]

Returns: object

Name	Type
closestIndex	number
closestLength	number
closestPoint	GeoPoint
closestPointIndex	number
closestPrePointDist	number

---

closestPointOnSegment

▸ closestPointOnSegment(p: GeoPoint, p1: GeoPoint, p2: GeoPoint): GeoPoint

点到线段的最近点

Parameters

Name	Type
p	GeoPoint
p1	GeoPoint
p2	GeoPoint

Returns: GeoPoint

---

coordTransfromByFourParamter

▸ coordTransfromByFourParamter(pt: GeoPoint, param: { dx: number ; dy: number ; rotate: number ; scale: number }): GeoPoint

通过四参数进行坐标转换

Parameters

Name	Type	Description
pt	GeoPoint	点
param	object	四参数
param.dx	number	-
param.dy	number	-
param.rotate	number	-
param.scale	number	-

Returns: GeoPoint

---

coordTransfromByInvFourParamter

▸ coordTransfromByInvFourParamter(pt: GeoPoint, param: { dx: number ; dy: number ; rotate: number ; scale: number }): GeoPoint

通过四参数反算进行坐标转换

Parameters

Name	Type	Description
pt	GeoPoint	点
param	object	四参数
param.dx	number	-
param.dy	number	-
param.rotate	number	-
param.scale	number	-

Returns: GeoPoint

---

coordTransfromGetFourParamter

▸ coordTransfromGetFourParamter(srcArr: GeoPoint[], destArr: GeoPoint[], isSetRotateZero: boolean, isConsiderPointOrder?: boolean): object

坐标转换得到四参数

Parameters

Name	Type	Description
srcArr	GeoPoint[]	原始点数组
destArr	GeoPoint[]	目标点数组
isSetRotateZero	boolean	是否设置旋转为零，默认false,如果为true,则只考虑平移和缩放
isConsiderPointOrder?	boolean	不考虑点的次序(这样旋转角度方向总是上面，在-180,180之间）

Returns: object

Name	Type
dx	number
dy	number
rotate	number
scale	number

---

createAnimateFillLayer

▸ createAnimateFillLayer(map: Map, path: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any, options?: IAnimateFillLayerOptions): ICreateFillAnimateLayerResult

创建多边形动画图层

Parameters

Name	Type	Default value	Description
map	Map	-	地图对象
path	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any	-	线坐标(lngLat)
options	IAnimateFillLayerOptions	{}	选项

Returns: ICreateFillAnimateLayerResult

---

createAnimateImages

▸ createAnimateImages(options?: ICreateAnimateImagesOptions): ImageData[]

创建动画图片集

Parameters

Name	Type	Description
options?	ICreateAnimateImagesOptions	选项

Returns: ImageData[]

---

createAnimateLineLayer

▸ createAnimateLineLayer(map: Map, path: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any, options?: IAnimateLineLayerOptions): ICreateLineAnimateLayerResult

创建多段线动画图层

Parameters

Name	Type	Description
map	Map	地图对象
path	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any	线坐标(lngLat)
options?	IAnimateLineLayerOptions	选项

Returns: ICreateLineAnimateLayerResult

---

createAnimateSymbolLayer

▸ createAnimateSymbolLayer(map: Map, path: PointGeoJsonInput | PointGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike | any, options?: IAnimateSymbolLayerOptions): ICreateSymbolAnimateLayerResult

创建符号动画图层

Parameters

Name	Type	Description
map	Map	地图对象
path	PointGeoJsonInput | PointGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike | any	符号坐标(lngLat)
options?	IAnimateSymbolLayerOptions	选项

Returns: ICreateSymbolAnimateLayerResult

---

createAntPathAnimateImages

▸ createAntPathAnimateImages(options?: ICreateAntPathAnimateLineLayerOptions): ImageData[]

创建蚂蚁线动画图像集

Parameters

Name	Type	Description
options?	ICreateAntPathAnimateLineLayerOptions	选项

Returns: ImageData[]

---

createAntPathAnimateLineLayer

▸ createAntPathAnimateLineLayer(map: Map, path: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any, options?: ICreateAntPathAnimateLineLayerOptions): ICreateLineAnimateLayerResult

创建蚂蚁线动画线图层

Parameters

Name	Type	Default value	Description
map	Map	-	地图对象
path	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any	-	线坐标(lngLat)
options	ICreateAntPathAnimateLineLayerOptions	{}	选项

Returns: ICreateLineAnimateLayerResult

---

createArrowAnimateImages

▸ createArrowAnimateImages(options?: ICreateArrowAnimateLineLayerOptions): ImageData[]

创建箭头动画图像集

Parameters

Name	Type	Description
options?	ICreateArrowAnimateLineLayerOptions	选项

Returns: ImageData[]

---

createArrowAnimateLineLayer

▸ createArrowAnimateLineLayer(map: Map, path: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any, options?: ICreateArrowAnimateLineLayerOptions): ICreateLineAnimateLayerResult

创建箭头动画线图层

Parameters

Name	Type	Description
map	Map	地图对象
path	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any	线坐标(lngLat)
options?	ICreateArrowAnimateLineLayerOptions	选项

Returns: ICreateLineAnimateLayerResult

---

createFrameAnimation

▸ createFrameAnimation(callback: (status: FrameAnimationStatus) => boolean, fps?: number, stopCallBack?: (status: FrameAnimationStatus) => void): FrameAnimation

创建一个 FrameAnimation 对象来启动和停止你的动画功能.

example const count = 0;

const animation = createFrameAnimation(() => { context.clearRect(0, 0, width, height); context.font = "4rem monospace"; context.textAlign = 'center'; context.fillText(count, width / 2, height / 2);

count++; });

animation.start();

Parameters

Name	Type	Description
callback	(status: FrameAnimationStatus) => boolean	处理动画的回调,如果返回true，表示结束动画，返回false表示继续动画， .
fps?	number	一秒运行多少帧，用来控制速度，如为0，则默认为系统帧率
stopCallBack?	(status: FrameAnimationStatus) => void	结束动画的回调，参数表示是取消（true)，还是正常结束(false)

Returns: FrameAnimation

| boolean}

---

createLineGeoJson

▸ createLineGeoJson(input: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any): GeoJsonGeomertry

创建geoson格式的线

Parameters

Name	Type
input	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any

Returns: GeoJsonGeomertry

---

createMarker

▸ createMarker(options?: createMarkerOptions): Marker

创建一个Makrer对象，相当于new Marker()

Parameters

Name	Type
options?	createMarkerOptions

Returns: Marker

---

createObjectOffset

▸ createObjectOffset(): object

Returns: object

Name	Type
data	(vertices: any) => any
margin	(dist: number) => any
offset	(dist: number) => any
offsetLines	(dist: number) => any
padding	(dist: number) => any

---

createObjectPolygonUtil

▸ createObjectPolygonUtil(): object

Returns: object

Name	Type
diff	(polygonA: Number[][], polygonB: Number[][]) => null | Number[][]
intersection	(polygonA: Number[][], polygonB: Number[][]) => null | Number[][]
union	(polygonA: Number[][], polygonB: Number[][]) => null | Number[][]

---

createPointGeoJson

▸ createPointGeoJson(input: PointGeoJsonInput | PointGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike | any): GeoJsonGeomertry

创建geoson格式的点

Parameters

Name	Type
input	PointGeoJsonInput | PointGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike | any

Returns: GeoJsonGeomertry

---

createPolygonGeoJson

▸ createPolygonGeoJson(input: LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any): GeoJsonGeomertry

创建geoson格式的多边形

Parameters

Name	Type
input	LineGeoJsonInput | LineGeoJsonInput[] | GeoJsonGeomertry | GeoPointLike[] | any

Returns: GeoJsonGeomertry

---

degToRad

▸ degToRad(a: number): number

角度转弧度

Parameters

Name	Type
a	number

Returns: number

---

entColorToHtmlColor

▸ entColorToHtmlColor(color: number | string, darkMode?: boolean, alpha?: number): string

实体颜色转html颜色

Parameters

Name	Type	Description
color	number | string	实体颜色
darkMode?	boolean	样式是否为暗黑框
alpha?	number	透明度的值

Returns: string

---

equals

▸ equals(a: number, b: number): boolean

Tests whether or not the arguments have approximately the same value, within an absolute or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less than or equal to 1.0, and a relative tolerance is used for larger values)

Parameters

Name	Type	Description
a	number	The first number to test.
b	number	The second number to test.

Returns: boolean

True if the numbers are approximately equal, false otherwise.

---

findShortestPath

▸ findShortestPath(startPoint: GeoPoint, endPoint: GeoPoint, lines: { id?: string ; points: GeoPoint[] ; weight?: number }[], precision?: number, hasDirection?: boolean): { endPoint: { closestIndex: number ; closestLength: number ; closestPoint: GeoPoint ; closestPointIndex: number ; closestPrePointDist: number } ; error: undefined ; route: any[] ; routeDetail: { index: any ; points: any[] ; reverse: boolean = false }[] ; startPoint: { closestIndex: number ; closestLength: number ; closestPoint: GeoPoint ; closestPointIndex: number ; closestPrePointDist: number } } | { endPoint: undefined ; error: any ; route: undefined ; routeDetail: undefined ; startPoint: undefined }

给定所有路线、起始点、终点生成最短路径

Parameters

Name	Type	Description
startPoint	GeoPoint	起点
endPoint	GeoPoint	终点
lines	{ id?: string ; points: GeoPoint[] ; weight?: number }[]	坐标，请转成几何坐标，再传入
precision?	number	误差，小数点后几位， 以为相同, 如果两个点的坐标距离小于此值，则认为是同一个节点
hasDirection?	boolean	是否考虑方向

Returns: { endPoint: { closestIndex: number ; closestLength: number ; closestPoint: GeoPoint ; closestPointIndex: number ; closestPrePointDist: number } ; error: undefined ; route: any[] ; routeDetail: { index: any ; points: any[] ; reverse: boolean = false }[] ; startPoint: { closestIndex: number ; closestLength: number ; closestPoint: GeoPoint ; closestPointIndex: number ; closestPrePointDist: number } } | { endPoint: undefined ; error: any ; route: undefined ; routeDetail: undefined ; startPoint: undefined }

---

geoBounds

▸ geoBounds(min?: GeoPoint, max?: GeoPoint): GeoBounds

new一个GeoBounds实例

Parameters

Name	Type
min?	GeoPoint
max?	GeoPoint

Returns: GeoBounds

---

geoPoint

▸ geoPoint(input: GeoPointLike): GeoPoint

new一个GeoPoint实例

Parameters

Name	Type
input	GeoPointLike

Returns: GeoPoint

---

getCircleFeature

▸ getCircleFeature(center: GeoPointLike, radius: number, points?: number, startAngle?: number, endAngle?: number, includeCenterWhenArc?: boolean): GeoJsonGeomertry

得到圆或圆弧的离散化的多边形的geojson的形式

Parameters

Name	Type	Default value	Description
center	GeoPointLike	-	中心点
radius	number	-	半径
points	number	360	离散化的个数
startAngle	number	0	开始角度
endAngle	number	360	结束角度
includeCenterWhenArc	boolean	true	如果是圆弧时，最后一个点加上中心点

Returns: GeoJsonGeomertry

, type: string, properties: {}}}

---

getCirclePolygonCoordinates

▸ getCirclePolygonCoordinates(center: GeoPointLike, radius: number, points?: number, startAngle?: number, endAngle?: number, includeCenterWhenArc?: boolean): number[][]

得到圆或圆弧的离散化的多边形的点

Parameters

Name	Type	Default value	Description
center	GeoPointLike	-	中心点
radius	number	-	半径
points	number	360	离散化的个数
startAngle	number	0	开始角度
endAngle	number	360	结束角度
includeCenterWhenArc	boolean	true	如果是圆弧时，最后一个点加上中心点

Returns: number[][]

---

getEllipseFeature

▸ getEllipseFeature(center: GeoPointLike, majorAxisRadius: number, minorAxisRadius: number, points?: number, startAngle?: number, endAngle?: number, includeCenterWhenArc?: boolean): GeoJsonGeomertry

得到圆或圆弧的离散化的多边形的geojson的形式

Parameters

Name	Type	Default value	Description
center	GeoPointLike	-	中心点
majorAxisRadius	number	-	-
minorAxisRadius	number	-	-
points	number	360	离散化的个数
startAngle	number	0	开始角度
endAngle	number	360	结束角度
includeCenterWhenArc	boolean	true	如果是圆弧时，最后一个点加上中心点

Returns: GeoJsonGeomertry

, type: string, properties: {}}}

---

getEllipsePolygonCoordinates

▸ getEllipsePolygonCoordinates(center: GeoPointLike, majorAxisRadius: number, minorAxisRadius: number, points?: number, startAngle?: number, endAngle?: number, includeCenterWhenArc?: boolean): number[][]

得到椭圆或椭圆弧的离散化的多边形的点

Parameters

Name	Type	Default value	Description
center	GeoPointLike	-	中心点
majorAxisRadius	number	-	长轴半径
minorAxisRadius	number	-	短轴半径
points	number	360	离散化的个数
startAngle	number	0	开始角度
endAngle	number	360	结束角度
includeCenterWhenArc	boolean	true	如果是椭/圆弧时，最后一个点加上中心点

Returns: number[][]

---

getEnvelopBounds

▸ getEnvelopBounds(envelop: string, prj: any): GeoBounds

根据外包矩形创建 GeoBounds.

Example:

const b = vjmap.getEnvelopBounds('POLYGON((3466315.697899 6704304.297588, 3466315.697899 7784496.211226, 4546475.901198 7784496.211226, 4546475.901198 6704304.297588, 3466315.697899 6704304.297588))', prj);

Parameters

Name	Type
envelop	string
prj	any

Returns: GeoBounds

---

getGeoBounds

▸ getGeoBounds<T>(data: T | string): GeoBounds

获取一个geojson的范围值

Type parameters

Name	Type
T	GeoPoint | Feature<Geometry | GeometryCollection, Properties> | FeatureCollection<Geometry | GeometryCollection, Properties> | Geometry | GeometryCollection | [number, number] | [number, number, number] | { x: number ; y: number ; z?: number } | { lat: number ; lng: number } | { lat: number ; lon: number } | GeoPointLike[]

Parameters

Name	Type	Description
data	T | string	输入值

Returns: GeoBounds

获取的范围值

---

getOptionValue

▸ getOptionValue<T>(a: T): T

Get first defined value.

Specialized "replacement" for a || b || c used frequently to get value from various sources (defaults, configs constants). In contrast to ||, this function provides proper typing for usual use cases (constant as last argument) and correct treatment of null and undefined.

If last parameter is "defined" then return type is T, otherwise return type is T | undefined.

Usage example:

interface Config {
    x?: number;
}
const someConfig: Config = {};
const val: number | undefined = undefined;
const DEFAULT = 5;
const x = getOptionValue(val, someConfig.x, DEFAULT);
    // typeof x === 'number' because DEFAULT is defined
const y = getOptionValue(val, someConfig.x);
    // typeof y === 'number | undefined' because someConfig.x is possibly undefined

Type parameters

Name
T

Parameters

Name	Type
a	T

Returns: T

▸ getOptionValue<T>(a: T | undefined, b: T): T

Type parameters

Name
T

Parameters

Name	Type
a	T | undefined
b	T

Returns: T

▸ getOptionValue<T>(a: T | undefined, b: T | undefined, c: T): T

Type parameters

Name
T

Parameters

Name	Type
a	T | undefined
b	T | undefined
c	T

Returns: T

▸ getOptionValue<T>(a: T | undefined, b: T | undefined, c: T | undefined, d: T): T

Type parameters

Name
T

Parameters

Name	Type
a	T | undefined
b	T | undefined
c	T | undefined
d	T

Returns: T

▸ getOptionValue<T>(...values: (T | undefined)[]): T | undefined

Type parameters

Name
T

Parameters

Name	Type
...values	(T | undefined)[]

Returns: T | undefined

---

getTempMapId

▸ getTempMapId(expireTime?: number, isVisible?: boolean): string

获取一个临时的图id(临时图形只会用临时查看，过期会自动删除)

Parameters

Name	Type	Description
expireTime?	number	临时图形不浏览情况下过期自动删除时间，单位分钟。默认30
isVisible?	boolean	是否可见，（可见的话，将可通过ListMaps获取，否则为隐藏图）。默认不可见

Returns: string

---

hexToBinStr

▸ hexToBinStr(strHex: string, isPadding?: boolean, reverse?: boolean): string

十六进制字符串转二进制字符串(可用于协同图形，图层开头显示设置的转换)

Parameters

Name	Type	Default value	Description
strHex	string	-	十进制的内容
isPadding	boolean	true	前面是否自动0，默认true
reverse	boolean	true	结果倒序，默认true

Returns: string

---

htmlColorToEntColor

▸ htmlColorToEntColor(color: string): number

html颜色转实体颜色

Parameters

Name	Type	Description
color	string	html

Returns: number

---

interpolateLineRange

▸ interpolateLineRange(points: GeoPointLike[] | any, number: number, isLngLat?: boolean, offsetDist?: number, minGap?: number, includeSrcPoint?: boolean): any[]

Parameters

Name	Type	Default value	Description
points	GeoPointLike[] | any	-	要插值的（多段）线的顶点(输入必须为经纬度).
number	number	-	沿线插入的点数；这包括端点，并且有效最小值为 2（如果给出较小的数字，则仍将返回端点）.
isLngLat	boolean	false	点坐标序列是否是经纬度坐标
offsetDist	number	0	一个可选的垂直距离，用于从线段偏移每个点，否则它会位于.
minGap	number	0	在后续插值点之间保持可选的最小间隙；如果一组“number”点的后续点之间的投影间隙低于此值，则“number”将减小到合适的值.
includeSrcPoint	boolean	true	包括原有点

Returns: any[]

---

interpolatePointsByRatio

▸ interpolatePointsByRatio(points: GeoPointLike[] | any, ratio: number, isLngLat?: boolean): any[]

通过比例(0-1)的值，得到坐标序列的点坐标的值

Parameters

Name	Type	Default value
points	GeoPointLike[] | any	-
ratio	number	-
isLngLat	boolean	false

Returns: any[]

---

isClosedPolygon

▸ isClosedPolygon(points: GeoPoint[]): boolean

多边形是否闭合

Parameters

Name	Type
points	GeoPoint[]

Returns: boolean

---

isCounterClockwise

▸ isCounterClockwise(a: GeoPoint, b: GeoPoint, c: GeoPoint): boolean

指示提供的点是按逆时针（真）还是顺时针（假）顺序排列

Parameters

Name	Type
a	GeoPoint
b	GeoPoint
c	GeoPoint

Returns: boolean

---

isGeoPointLike

▸ isGeoPointLike(geoPoint: any): geoPoint is GeoPointLike

A GeoPointLike object, an array of two numbers representing longitude and latitude, or an object with lng and lat or lon and lat properties.

Example:

const center = { lat: 53.3, lng: 13.4 };
mapView.geoCenter = GeoCoordinates.fromLatLng(center);

Parameters

Name	Type
geoPoint	any

Returns: geoPoint is GeoPointLike

---

isPointInPolygon

▸ Const isPointInPolygon(pos: GeoPoint, polygon: GeoPoint[]): boolean

判断点是否在多边形内。

Parameters

Name	Type	Description
pos	GeoPoint	点
polygon	GeoPoint[]	多边形坐标

Returns: boolean

---

isZero

▸ isZero(value: number, precision?: number): boolean

判断是否为零

Parameters

Name	Type	Description
value	number	值
precision?	number	精度，缺省1e-6

Returns: boolean

---

kebabCase

▸ Const kebabCase(s: any): any

Parameters

Name	Type
s	any

Returns: any

---

lineSplit

▸ lineSplit(line: GeoPoint[], splitLine: GeoPoint[], dotErr?: number): GeoPoint[][]

线被另外一条线分开多条线段，返回新的线段

Parameters

Name	Type	Description
line	GeoPoint[]
splitLine	GeoPoint[]
dotErr?	number	允许误差的小数点后几位，默认6位

Returns: GeoPoint[][]

---

metersPerPixel

▸ metersPerPixel(zoomLevel: number, latitude?: number): number

求不同级级别下，每米表示多少像素

Parameters

Name	Type	Description
zoomLevel	number	级别从0表示
latitude?	number	纬度

Returns: number

---

multiLineSplit

▸ multiLineSplit(lines: GeoPoint[][], dotErr?: number): GeoPoint[][]

多条线之间根据交点相互分开,返回相交后的所有线段，请确保每条线段不要自相交

Parameters

Name	Type	Description
lines	GeoPoint[][]
dotErr?	number	允许误差的小数点后几位，默认6位

Returns: GeoPoint[][]

---

offsetPointLine

▸ offsetPointLine(points: GeoPoint[], distance: number): any[]

Parameters

Name	Type
points	GeoPoint[]
distance	number

Returns: any[]

---

offsetPoints

▸ offsetPoints(pts: GeoPointLike[], options: { offset: number ; smoothFactor?: number }): any[]

Parameters

Name	Type
pts	GeoPointLike[]
options	object
options.offset	number
options.smoothFactor?	number

Returns: any[]

---

openMapDarkStyle

▸ openMapDarkStyle(): IMapStyleParam

打开地图的深色背景样式，值为 {backcolor: 0}

Returns: IMapStyleParam

---

openMapLightStyle

▸ openMapLightStyle(): IMapStyleParam

打开地图的浅色色背景样式，值为 {backcolor: 0xFFFFFF}

Returns: IMapStyleParam

---

pick

▸ pick<T, K>(object: T, props: K[]): Pick<T, K>

Pick props from `object.

Runtime version of Pick<T,K>.

Type parameters

Name	Type
T	object
K	string | number | symbol

Parameters

Name	Type
object	T
props	K[]

Returns: Pick<T, K>

---

pixelValue

▸ pixelValue(meters: number, zoomLevel: number, latitude?: number): number

不同级别下根据米数来求像素值

Parameters

Name	Type	Description
meters	number	米
zoomLevel	number	级别从0表示
latitude?	number	纬度

Returns: number

---

pointToSegmentDistance

▸ pointToSegmentDistance(p: GeoPoint, p1: GeoPoint, p2: GeoPoint): number

点到线段的距离

Parameters

Name	Type
p	GeoPoint
p1	GeoPoint
p2	GeoPoint

Returns: number

---

polygonCentroid

▸ polygonCentroid(vertices: GeoPoint[]): GeoPoint

根据 [x,y] 坐标列表计算多边形的质心。

Parameters

Name	Type	Description
vertices	GeoPoint[]	顶点坐标

Returns: GeoPoint

---

polygonIsClockwise

▸ polygonIsClockwise(points: GeoPoint[]): boolean

根据格林公式判断多边形是否为顺时针

Parameters

Name	Type
points	GeoPoint[]

Returns: boolean

false:逆时针

---

polylineMarginToPolygon

▸ polylineMarginToPolygon(pts: GeoPointLike[], options: { arcSegments?: number ; offset: number ; smoothFactor?: number }): any

把多段线往外扩展成多边形

Parameters

Name	Type
pts	GeoPointLike[]
options	object
options.arcSegments?	number
options.offset	number
options.smoothFactor?	number

Returns: any

---

radToDeg

▸ radToDeg(a: number): number

弧度转角度

Parameters

Name	Type
a	number

Returns: number

---

randInt

▸ randInt(n: number, m: number): number

生成一个区间的随机总数

Parameters

Name	Type
n	number
m	number

Returns: number

---

randomColor

▸ randomColor(): string

生成随机颜色

Returns: string

---

segmentIntersect

▸ segmentIntersect(x1: number, y1: number, x2: number, y2: number, x3: number, y3: number, x4: number, y4: number): { ratio: undefined ; result: string = "COLINEAR"; status: boolean = false; x: undefined ; y: undefined } | { ratio: number ; result: undefined = "COLINEAR"; status: boolean = true; x: number ; y: number }

线段相交

Parameters

Name	Type
x1	number
y1	number
x2	number
y2	number
x3	number
y3	number
x4	number
y4	number

Returns: { ratio: undefined ; result: string = "COLINEAR"; status: boolean = false; x: undefined ; y: undefined } | { ratio: number ; result: undefined = "COLINEAR"; status: boolean = true; x: number ; y: number }

| {result: string, status: boolean} | {x: number, y: number, status: boolean, ratio: number} | {result: string, status: boolean}}

---

simplify

▸ simplify(points: GeoPoint[], tolerance?: number): GeoPoint[]

简化点坐标

Parameters

Name	Type
points	GeoPoint[]
tolerance?	number

Returns: GeoPoint[]

---

syncMaps

▸ syncMaps(...args: Map[]): function

同步两张地图的移动。

Parameters

Name	Type
...args	Map[]

Returns: () => void

---

toRadian

▸ toRadian(a: number): number

Convert Degree To Radian

Parameters

Name	Type	Description
a	number	Angle in Degrees

Returns: number

---

upperCamelCase

▸ Const upperCamelCase(s: any): any

Parameters

Name	Type
s	any

Returns: any

---

utf8ToUnicode

▸ utf8ToUnicode(strUtf8: string): string

utf8转unicode

Parameters

Name	Type	Description
strUtf8	string	utf8的内容

Returns: string

---

vectorContour

▸ vectorContour(featureCollection: FeatureCollection, weight: string, breaks: number[], params?: { alpha?: number ; canvas?: HTMLCanvasElement ; colors?: string[] ; extent?: [number, number, number, number] ; model?: "exponential" | "gaussian" | "spherical" ; sigma2?: number ; width?: number ; xlim?: number ; ylim?: number }): object

生成矢量等值面

Parameters

Name	Type	Description
featureCollection	FeatureCollection	-
weight	string	-
breaks	number[]	-
params?	object	params:{ model:'exponential','gaussian','spherical'，三选一，默认exponential sigma2: 0, // sigma2是σ²，对应高斯过程的方差参数，也就是这组数据z的距离，方差参数σ²的似然性反映了高斯过程中的误差，并应手动设置。一般设置为 0 ，其他数值设了可能会出空白图 alpha: 100, // Alpha α对应方差函数的先验值，此参数可能控制钻孔扩散范围,越小范围越大,少量点效果明显，但点多了且分布均匀以后改变该数字即基本无效果了，默认设置为100 canvas: HTMLCanvasElement, // 如果要渲染到画布上填这个 xlim: number, // canvas有效 ylim: number, // canvas有效 colors:string[] // canvas有效 等值面分级区间 width: number // 生成等值线宽度参数。像素长度。默认200。宽度值越大，绘制越精确，但也会导致速度变慢，内存占用越多 }
params.alpha?	number	-
params.canvas?	HTMLCanvasElement	-
params.colors?	string[]	-
params.extent?	[number, number, number, number]	-
params.model?	"exponential" | "gaussian" | "spherical"	-
params.sigma2?	number	-
params.width?	number	-
params.xlim?	number	-
params.ylim?	number	-

Returns: object

Name	Type
alg?	any
contour?	FeatureCollection
grid?	object
grid.grid	number[]
grid.m	number
grid.n	number
grid.x_resolution	number
grid.xlim	number
grid.y_resolution	number
grid.ylim	number
grid.zlim	number
variogram?	any

Modules

vjmap / Exports / common