robust-point-in-polygon:精确测试一个点是在多边形的内部，外部还是边界上

多边形中的稳健点 精确确定2D多边形中是否包含点。 例子 var classifyPoint = require ( "robust-point-in-polygon" ) var polygon = [ [ 1 , 1 ] , [ 1 , 2 ] , [ 2 , 2 ] , [ 2 , 1 ] ] console . log ( classifyPoint ( polygon , [ 1.5 , 1.5 ] ) , classifyPoint ( polygon , [ 1 , 2 ] ) , classifyPoint ( polygom , [ 100000 , 10000 ] ) ) 输出： -1 0 1 安装 npm install robust-point-in-polygon 原料药 require("robust-point-in-polygon")(loo