Fetch binary chunk and draw on canvas

2025-02-03 23:33:28 +02:00
parent c1b1226678
commit df8d16ed4a
18 changed files with 898 additions and 6 deletions
@@ -0,0 +1,17 @@
+import { valueToColorInterpolated, valueToColorThreshold } from '../../helpers/interpolateColors'
+import { MeteoConversion } from '../../interfaces/interfaces'
+import { PRECIPITATION } from './constants'
+
+
+export function precipitationColors(
+    encodedValue: number,
+    { reference, binaryScale, decimalScale}: MeteoConversion,
+    isInterpolated = true,
+): [number, number, number, number] {
+    // const rainMM = (reference + encodedValue * Math.pow(2, binaryScale)) * Math.pow(10, -decimalScale) / 1000
+    const rainMM = (reference + encodedValue * Math.pow(2, binaryScale)) * Math.pow(10, -decimalScale)
+
+    return isInterpolated
+        ? valueToColorInterpolated(rainMM, PRECIPITATION)
+        : valueToColorThreshold(rainMM, PRECIPITATION)
+}