Function smoothPoints

smoothPoints(points, curvePointNum?, curvePointPosRatio?, oldIndexTarget?): any[]
平滑点，拐弯处将以曲线代替 points 点数组 curvePointNum 每个拐点增加的曲线点个数，默认5 curvePointPosRatio 开始拐的点所占曲线位置的长度比例 (0-1) 默认 0.9 oldIndexTarget 可填入一个数组，用来返回新数据索引对应的来老数组中的索引位置
Parameters
- points: [number, number, number][]
- Optional curvePointNum: number
- Optional curvePointPosRatio: number
- Optional oldIndexTarget: number[]
Returns any[]