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@@ -186,6 +186,32 @@ Page({
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}
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},
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+
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+ // 经纬度点距离 gcj-02坐标系
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+ haversineDistance(location1, location2) {
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+ let lat1 = location1.latitude
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+ let lon1 = location1.longitude
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+ let lat2 = location2.latitude
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+ let lon2 = location2.longitude
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+
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+ function toRad(degree) {
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+ return degree * Math.PI / 180;
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+ }
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+ const R = 6371e3; // 地球半径，单位为米
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+ const φ1 = toRad(lat1);
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+ const φ2 = toRad(lat2);
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+ const Δφ = toRad(lat2 - lat1);
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+ const Δλ = toRad(lon2 - lon1);
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+
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+ const a = Math.sin(Δφ / 2) * Math.sin(Δφ / 2) +
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+ Math.cos(φ1) * Math.cos(φ2) *
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+ Math.sin(Δλ / 2) * Math.sin(Δλ / 2);
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+ const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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+
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+ const distance = R * c; // 距离，单位为米
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+ return distance;
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+ }
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+
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//切换
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switchTab (e) {
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const index = e.currentTarget.dataset.index;
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