transformRotate

Rotates any geojson Feature or Geometry of a specified angle, around its centroid or a given pivot point; all rotations follow the right-hand rule: https://en.wikipedia.org/wiki/Right-hand_rule
旋转任何geojsonFeature或几何学的一个指定的角度，围绕其质心或一个给定的枢轴点;所有的旋转都遵循右手规则:https://en.wikipedia.org/wiki/righthand_rule

参数

参数	类型	描述
geojson	GeoJSON	object to be rotated
angle	number	of rotation (along the vertical axis), from North in decimal degrees, negative clockwise
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
pivot	Coord	centroid	point around which the rotation will be performed
mutate	boolean	false	允许修改GeoJSON输入（如果为真，性能将显著提高）

返回

GeoJSON - the rotated GeoJSON feature

示例

// 注意：polygon首尾坐标要一致
var poly = turf.polygon([[[0,29],[3.5,29],[2.5,32],[0,29]]]);
var options = {pivot: [0, 25]};
var rotatedPoly = turf.transformRotate(poly, 10, options);