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Maurice
20 lines
879 B
TypeScript
20 lines
879 B
TypeScript
/**
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* Walking time the way hiking signposts in the Alps state it (DIN 33466, as the
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* DAV and the Swiss hiking trails use it): 4 km an hour on the flat, 300 m of
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* climb and 500 m of descent an hour, and of the time for the distance and the
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* time for the height only the larger counts in full, the smaller by half.
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*
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* The router's own estimate is a walking pace along the line and barely sees a
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* slope, so a short steep climb came out far too quick.
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*/
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const FLAT_KM_PER_HOUR = 4;
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const CLIMB_M_PER_HOUR = 300;
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const DESCENT_M_PER_HOUR = 500;
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export function hikingTimeMinutes(distanceKm: number, climbM: number, descentM: number): number {
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const flat = distanceKm / FLAT_KM_PER_HOUR;
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const height = climbM / CLIMB_M_PER_HOUR + descentM / DESCENT_M_PER_HOUR;
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const hours = Math.max(flat, height) + Math.min(flat, height) / 2;
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return Math.round(hours * 60);
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}
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