mirror of
https://github.com/bilawalsidhu/gods-eye-view.git
synced 2026-11-04 10:24:02 +00:00
Sameh Khamis
5be2185dc7
Number(null) is 0, so the cockpit cloud profile treated a missing weather code as clear but available. The briefing's three checks now share one helper, and the current-state note is its own bullet instead of folding into the route one.
94 lines
3.0 KiB
JavaScript
94 lines
3.0 KiB
JavaScript
function clamp01(value) {
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return Math.min(1, Math.max(0, Number(value) || 0));
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}
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function range01(value, min, max) {
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if (!Number.isFinite(Number(value)) || max <= min) return 0;
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return clamp01((Number(value) - min) / (max - min));
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}
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/**
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* Convert source weather observations into bounded visual strengths. The WMO
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* code selects the effect family; numeric observations only control strength.
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* Missing weather fails clear instead of inventing conditions.
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*/
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export function deriveWeatherEffectProfile(weather) {
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const reported = weather?.weatherCode;
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// Number(null) and Number('') are 0 (clear), so a missing code is checked first.
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if (
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reported == null ||
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reported === '' ||
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!Number.isFinite(Number(reported))
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) {
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return {
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available: false,
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cloud: 0,
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rain: 0,
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snow: 0,
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fog: 0,
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haze: 0,
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droplets: 0,
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storm: 0,
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wind: 0,
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windDirectionDeg: 0,
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};
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}
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const code = Number(weather.weatherCode);
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const cover = range01(weather.cloudCoverPct, 8, 100);
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const precipitation = Math.max(0, Number(weather.precipitationMm) || 0);
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const wind = range01(weather.windKph, 4, 90);
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const visibilityM = Number(weather.visibilityM);
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const visibilityFog = Number.isFinite(visibilityM)
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? range01(12000 - visibilityM, 0, 11500)
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: 0;
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const drizzle = code >= 51 && code <= 57;
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const rainCode =
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(code >= 61 && code <= 67) || (code >= 80 && code <= 82) || code >= 95;
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const snowCode = (code >= 71 && code <= 77) || (code >= 85 && code <= 86);
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const fogCode = code === 45 || code === 48;
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const stormCode = code >= 95;
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const observedPrecip = range01(precipitation, 0.05, 8);
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const rainFloor = drizzle ? 0.12 : rainCode ? (stormCode ? 0.68 : 0.28) : 0;
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const snowFloor = snowCode ? 0.3 : 0;
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const rain = drizzle || rainCode ? Math.max(rainFloor, observedPrecip) : 0;
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const snow = snowCode ? Math.max(snowFloor, observedPrecip) : 0;
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const fog = Math.max(fogCode ? 0.78 : 0, visibilityFog);
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const storm = stormCode ? Math.max(0.55, observedPrecip) : 0;
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const forcedCloud = stormCode
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? 0.92
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: rain || snow
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? 0.7
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: fogCode
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? 0.55
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: 0;
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const cloud = Math.max(cover, forcedCloud);
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return {
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available: true,
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cloud: clamp01(cloud),
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rain: clamp01(rain),
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snow: clamp01(snow),
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fog: clamp01(fog),
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haze: clamp01(Math.max(fog * 0.78, cloud * 0.14 + (rain + snow) * 0.2)),
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droplets: clamp01(rain * (0.58 + storm * 0.42)),
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storm: clamp01(storm),
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wind,
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windDirectionDeg: Number.isFinite(Number(weather.windDirectionDeg))
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? ((Number(weather.windDirectionDeg) % 360) + 360) % 360
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: 0,
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};
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}
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/** Fade ground-weather overlays as the camera climbs above their plausible layer. */
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export function weatherAltitudeFactors(altitudeM) {
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const altitude = Math.max(0, Number(altitudeM) || 0);
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return {
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precipitation: 1 - range01(altitude, 6000, 14000),
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cloud: 1 - range01(altitude, 14000, 24000),
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haze: 1 - range01(altitude, 9000, 20000),
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};
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}
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