com.telenav.mesakit.navigation.routing.cost.functions.heuristic.SpeedCostFunction Maven / Gradle / Ivy

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// © 2011-2021 Telenav, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// https://www.apache.org/licenses/LICENSE-2.0
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package com.telenav.mesakit.navigation.routing.cost.functions.heuristic;

import com.telenav.mesakit.graph.Edge;
import com.telenav.mesakit.navigation.routing.cost.Cost;
import com.telenav.mesakit.navigation.routing.cost.CostFunction;

/**
 * A routing cost function which is based on travel time
 *
 * @author jonathanl (shibo)
 */
public class SpeedCostFunction implements CostFunction
{
    @Override
    public Cost cost(Edge candidate)
    {
        return Cost.inverse(Math.min(1.0, candidate.freeFlowSpeed().speed().asMilesPerHour() / 100.0));
    }
}