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2.5.2

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Fix sunburn factors
This commit is contained in:
fraxle
2026-06-03 20:46:49 +01:00
parent 06d611318e
commit efc9b0eed9
1 changed files with 11 additions and 8 deletions
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assets/js/utils.js
+11 -8
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@@ -131,16 +131,19 @@ export function uvSplit(uv, elevDeg) {
// SUNBURN TIME - minutes to MED for the chosen Fitzpatrick skin type. // SUNBURN TIME - minutes to MED for the chosen Fitzpatrick skin type.
// ------------------------------------------------------------------- // -------------------------------------------------------------------
// Standard erythemal model: time_min - base_minutes[type] / UV_index. // Standard erythemal model: time_min - base_minutes[type] / UV_index.
// Numbers are the well-known "unprotected, midday, no sunscreen" // base = minutes to 1 MED at UV = 1, unprotected, no sunscreen.
// reference times at UV = 1. Returns Infinity when UV is 0 (night). // Calibrated to the erythemal-dose science (UVI = 40 x E_er W/m-,
// MED_II ~ 250 J/m-), giving ~150/UV min for fair skin rather than
// the more alarmist consumer "10 min at UV 10" rule of thumb.
// Returns Infinity when UV is 0 (night).
// ------------------------------------------------------------------- // -------------------------------------------------------------------
export const SKIN_TYPES = { export const SKIN_TYPES = {
I: { name: 'I · Very fair', base: 67 }, I: { name: 'I · Very fair', base: 100 },
II: { name: 'II · Fair', base: 100 }, II: { name: 'II · Fair', base: 150 },
III: { name: 'III · Light', base: 200 }, III: { name: 'III · Light', base: 300 },
IV: { name: 'IV · Mid', base: 300 }, IV: { name: 'IV · Mid', base: 450 },
V: { name: 'V · Dark', base: 400 }, V: { name: 'V · Dark', base: 600 },
VI: { name: 'VI · Very dark', base: 500 }, VI: { name: 'VI · Very dark', base: 750 },
}; };
export function sunburnMinutes(uv, skinType = 'II') { export function sunburnMinutes(uv, skinType = 'II') {
if (!uv || uv <= 0) return Infinity; if (!uv || uv <= 0) return Infinity;