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Add wind direction drawing

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This commit is contained in:
Guntis Smaukstelis
2025-02-04 22:47:01 +02:00
parent e03ae14cfa
commit 9c8902e746
4 changed files with 22 additions and 6 deletions
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web/src/harmonie/draw/windDirection.ts
+10 -2
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@@ -141,6 +141,7 @@ export function windSpeedColors(
export function fetchWindData(
customMessage: GribMessage,
gribArr: GribMessage[],
fileName: string,
): Promise<[GribMessage[], ArrayBuffer[], ArrayBuffer[]]> {
const windU = gribArr.find(m => m.meteo.discipline===0 && m.meteo.category===2 && m.meteo.product===2 && m.meteo.levelType===103 && m.meteo.levelValue===10)
const windV = gribArr.find(m => m.meteo.discipline===0 && m.meteo.category===2 && m.meteo.product===3 && m.meteo.levelType===103 && m.meteo.levelValue===10)
@@ -157,8 +158,8 @@ export function fetchWindData(
const vBinaryLength = section7v.size - 5
return Promise.all([
fetchBuffer(`${apiHost}/api/binary-chunk/${uBinaryOffset}/${uBinaryLength}`),
fetchBuffer(`${apiHost}/api/binary-chunk/${vBinaryOffset}/${vBinaryLength}`),
fetchBuffer(`${apiHost}/api/grib/binary-chunk/${uBinaryOffset}/${uBinaryLength}/${fileName}`),
fetchBuffer(`${apiHost}/api/grib/binary-chunk/${vBinaryOffset}/${vBinaryLength}/${fileName}`),
]).then(([bufferU, bufferV]) => {
const buffer = new Uint8Array(bufferU.byteLength + bufferV.byteLength)
buffer.set(new Uint8Array(bufferU))
@@ -172,3 +173,10 @@ export function fetchWindData(
function toInt(bytes: Uint8Array): number {
return bytes.reduce((acc, curr) => acc * 256 + curr)
}
export function getFakeWindDirection(windSpeed: GribMessage): GribMessage {
const modifiedWindSpeed = structuredClone(windSpeed)
modifiedWindSpeed.meteo = {...modifiedWindSpeed.meteo, product: 192}
modifiedWindSpeed.title = 'meteorology, momentum, wind direction 10m (calc u,v)'
return modifiedWindSpeed
}