line-segments-intersect:确定两个线段是否相交

＃line-segments-intersect确定两个线段是否彼此相交。 安装 npm install line-segments-intersect 用法 var intersects = require('line-segments-intersect'); intersects(segment1,segment2 [,precision]); segment1的两点数组segment2的两点数组而点是x和y坐标的数组小数点后的精度，默认为6 例子 var intersects = require ( 'line-segments-intersect' ) ; if ( intersects ( [ [ 0 , 0 ] , [ 10 , 10 ] ] , [ [ 10 , 0 ] , [ 0 , 10 ] ] ) { console . log ( 'two segment