rust 计算两个经纬度的距离

依赖库

math_adapter={ version = "0.3.1", features = [ "cgmath_ops" ] }

实现

use math_adapter::plugin::cgmath::own::num_traits::{

    float::FloatCore,

    Float,

};

/// 计算两个坐标之间的距离

/// lon1:经度1，

/// lat1:纬度1，

/// lon2:经度1，

/// lat2:纬度1

async fn haversine(lon1: f64, lat1: f64, lon2: f64, lat2: f64) -> f64 {

    let lon1 = FloatCore::to_radians(lon1);

    let lat1 = FloatCore::to_radians(lat1);

    let lon2 = FloatCore::to_radians(lon2);

    let lat2 = FloatCore::to_radians(lat2);

    let dlon = lon2 - lon1;

    let dlat = lat2 - lat1;

    let s_dlat = Float::sin(dlat / 2.0);

    let s_dlon = Float::sin(dlon / 2.0);

    let a = s_dlat * s_dlat

                + Float::cos(lat1)

                * Float::cos(lat2)

                * s_dlon * s_dlon ;

    let c = 2.0 * Float::asin(Float::sqrt(a));

    let r = 6371.0;  // 地球平均半径，单位为公里

    c * r * 1000.0

}

巴特西

rust 计算两个经纬度的距离

依赖库

实现

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