Add type

Author: jolevesq

packages/geoview-core/src/api/config/validation-classes/raster-validation-classes/geotiff-layer-entry-config.ts

@@ -8,6 +8,7 @@ import { CONST_LAYER_ENTRY_TYPES, CONST_LAYER_TYPES } from '@/api/types/layer-sc
 import type { AbstractBaseLayerEntryConfigProps } from '@/api/config/validation-classes/abstract-base-layer-entry-config';
 import { AbstractBaseLayerEntryConfig } from '@/api/config/validation-classes/abstract-base-layer-entry-config';
 import type { TypeGeoTIFFLayerConfig } from '@/geo/layer/geoview-layers/raster/geotiff';
+import type { RGBA } from '@/core/utils/utilities';
 
 export interface GeoTIFFLayerEntryConfigProps extends AbstractBaseLayerEntryConfigProps {
   /** Source settings to apply to the GeoView layer source at creation time. */
@@ -19,7 +20,7 @@ export interface GeoTIFFLayerEntryConfigProps extends AbstractBaseLayerEntryConf
  */
 export class GeoTIFFLayerEntryConfig extends AbstractBaseLayerEntryConfig {
   /** Embedded RGBA color palette extracted from the GeoTIFF file, if present. */
-  embeddedColorMap: [number, number, number, number][] | undefined;
+  embeddedColorMap: RGBA[] | undefined;
 
   /**
    * The class constructor.

packages/geoview-core/src/core/utils/utilities.ts

@@ -29,6 +29,11 @@ interface PingResult {
   error?: string;
 }
 
+/**
+ * Represents RGBA color as [Red, Green, Blue, Alpha]
+ */
+export type RGBA = [r: number, g: number, b: number, a: number];
+
 /**
  * Generates an array of numbers from `start` (inclusive) to `end` (exclusive),
  * incrementing by `step`.
@@ -528,9 +533,9 @@ export async function validateAndPingUrl(
  * Each color is normalized to 8-bit values.
  *
  * @param url - URL to the GeoTIFF file.
- * @returns Array of [R, G, B, A] color tuples, or undefined if no palette.
+ * @returns Array of RGBA color tuples, or undefined if no palette.
  */
-export async function extractGeotiffColorMap(url: string): Promise<[number, number, number, number][] | undefined> {
+export async function extractGeotiffColorMap(url: string): Promise<RGBA[] | undefined> {
   const tiff = await fromUrl(url);
   const image = await tiff.getImage();
 
@@ -542,7 +547,7 @@ export async function extractGeotiffColorMap(url: string): Promise<[number, numb
   }
 
   const size = colorMap.length / 3;
-  const palette: [number, number, number, number][] = [];
+  const palette: RGBA[] = [];
 
   for (let i = 0; i < size; i++) {
     // Use Math.floor(colorMap[i] / 256) instead of bitwise shift for clarity and to avoid unexpected behavior with large numbers

packages/geoview-core/src/geo/layer/gv-layers/tile/gv-geotiff.ts

@@ -11,6 +11,7 @@ import { type TypeLegend } from '@/index';
 import { CONST_LAYER_TYPES } from '@/api/types/layer-schema-types';
 import { logger } from '@/core/utils/logger';
 import { Fetch } from '@/core/utils/fetch-helper';
+import type { RGBA } from '@/core/utils/utilities';
 
 /**
  * Manages a GeoTIFF layer.
@@ -51,7 +52,7 @@ export class GVGeoTIFF extends AbstractGVTile {
    *
    * @param palette - Array of RGBA color tuples from the GeoTIFF color map.
    */
-  #applyColorMapStyle(palette: [number, number, number, number][]): void {
+  #applyColorMapStyle(palette: RGBA[]): void {
     // Make nodata index (0) fully transparent
     const adjustedPalette = [...palette];
     adjustedPalette[0] = [0, 0, 0, 0];