booleanClockwise

描述

🌐 Description

获取一个环，并返回 true 或 false，以判断该环是顺时针还是逆时针。

🌐 Takes a ring and return true or false whether or not the ring is clockwise or counter-clockwise.

参数

🌐 Parameters

名称	类型	描述
line	Feature<LineString> | LineString | Array<Array<number>>	待评估

返回

🌐 Returns

boolean true/false

示例

🌐 Examples

var clockwiseRing = turf.lineString([
  [0, 0],
  [1, 1],
  [1, 0],
  [0, 0],
]);
var counterClockwiseRing = turf.lineString([
  [0, 0],
  [1, 0],
  [1, 1],
  [0, 0],
]);

turf.booleanClockwise(clockwiseRing);
//=true
turf.booleanClockwise(counterClockwiseRing);
//=false

安装

🌐 Installation

$ npm install @turf/boolean-clockwise

import { booleanClockwise } from "@turf/boolean-clockwise";
const result = booleanClockwise(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.booleanClockwise(...);