Summary

Constructor

let point1 = new hmap.geom.Point(new hmap.basetype.Coordinate(120,30,0));
let point2 = new hmap.geom.Point(new hmap.basetype.Coordinate(121,30,0));
let point3 = new hmap.geom.Point(new hmap.basetype.Coordinate(121,31,0));
let luneGeom = new hmap.geomext.Lune([point1,point2,point3]);

Methods

getBBox() → {module:basetype~BBox}

获取拓展几何的三维包围盒

Returns:

module:basetype~BBox -

返回三维包围盒

getCoordSeqs() → {Array.<module:basetype~CoordSeq>}

获取弓形的坐标序列数组，其长度为1。

Returns:

Array.<module:basetype~CoordSeq> -

坐标序列数组

Example

let coordSeqs = luneGeom.getCoordSeqs();

getType() → {String}

获取几何体类型

Returns:

String -

hmap拓展的几何类型，参见GeometryExtType

Example

let type = luneGeom.getType()

setCtrlPoints(points)

重新设置弓形的控制点。

Parameters:

Name	Type	Description
points	Array.<module:geom~Point>	点几何体数组，数组长度小于2或非数组类型时，则抛出构造异常；当数组长度大于3时，取前3个点几何体作为控制点。

Throws:

RangeError | TypeError -

数组长度小于2或非数组类型，则抛出构造异常。

Example

let point1 = new hmap.geom.Point(new hmap.basetype.Coordinate(121,30,0));
 let point2 = new hmap.geom.Point(new hmap.basetype.Coordinate(122,30,0));
 let point3 = new hmap.geom.Point(new hmap.basetype.Coordinate(121,31,0));
 luneGeom.setCtrlPoints([point1,point2,point3]);

toLine() → {module:geom~Line}

将弓形转化为线几何体

Returns:

module:geom~Line -

线几何体

Example

let line = luneGeom.toLine();

toPolygon() → {module:geom~Polygon}

将弓形转化为面几何

Returns:

module:geom~Polygon -

面几何

Example

let polygon = luneGeom.toPolygon();