package com.flightfeather.uav.model
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import com.flightfeather.uav.lightshare.bean.DataVo
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/**
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* 权重
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* 某种影响因素在不同情况下对某种监测数据产生的权重影响
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*/
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abstract class BaseWeight <M: BaseMData, S : BaseSOP> {
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abstract val tag:String
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// 区间阈值
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abstract val sectionValues: List<Double>
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// 区间对应权重
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abstract val weights: List<Double>
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// 上次计算的权重值
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private var lastWeight = -1.0
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// 权重是否变化
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var isChange = true
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fun getWeight(mData: M, sop: S): Double? {
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if (!isChange) {
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if (lastWeight < 0) {
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val v = onWeightFactor(mData, sop) ?: return null
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lastWeight = weightCal(v)
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}
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// println("$tag: $lastWeight")
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return lastWeight
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} else {
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val v = onWeightFactor(mData, sop) ?: return null
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lastWeight = weightCal(v)
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// println("$tag: $lastWeight")
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return lastWeight
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}
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}
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/**
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* 获取权重因子值
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*/
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abstract fun onWeightFactor(mData: M, sop: S): Double?
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/**
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* 权重计算
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* @param value 影响因素的值
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*/
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private fun weightCal(value: Double): Double {
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for (i in sectionValues.indices) {
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if (value < sectionValues[i]) {
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return weights[i]
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}
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}
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return weights.last()
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}
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}
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