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Update golf-gps.js

master
jeonlab 2024-06-25 09:32:47 -04:00 committed by GitHub
parent b281c123a7
commit d918f573eb
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1 changed files with 4 additions and 4 deletions
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apps/golf-gps/golf-gps.js
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@ -42,7 +42,7 @@ var lastFix = {
lon: 0,
alt: 0, // altitude in m
speed: 0, // km/h
course: 0, // heading in degree
course: 0, // heading in degrees
time: 0,
satellites: 0,
fix: 0,
@ -81,8 +81,8 @@ function readOneCourseData() {
}
function distanceCalc(lat1, long1, lat2, long2) {
const delLat = Math.abs(lat1 - lat2) * 111151.3; // 111151.3 = (2*6368500*pi)/360, 6368500 ~ Earth radius at latitude 42.3°
const delLong = Math.abs(long1 - long2) * 111151.3 * Math.cos(radians((lat1 + lat2)/2));
const delLat = Math.abs(lat1 - lat2) * 111194.9; // 111194.9 = (2*6371000*pi)/360, 6371000 ~ Earth's average radius
const delLong = Math.abs(long1 - long2) * 111194.9 * Math.cos(radians((lat1+lat2)/2));
return Math.sqrt(delLat * delLat + delLong * delLong)/0.9144; // in yards
}