support ellipsoidal healpix and more indexing schemes through healpix-geo

package.json

@@ -30,7 +30,6 @@
   "dependencies": {
     "@eeholmes/zarrita-pcodec": "github:eeholmes/zarrita-pcodec",
     "@fortawesome/fontawesome-free": "^7.2.0",
-    "@hscmap/healpix": "^1.4.12",
     "@primevue/themes": "^4.5.4",
     "@vuepic/vue-datepicker": "14.0.0",
     "@vueuse/core": "^14.3.0",
@@ -46,6 +45,7 @@
     "fflate": "^0.8.3",
     "geokdbush": "2.1.0",
     "geotiff": "^3.0.5",
+    "healpix-geo": "^0.2.1",
     "humanize-duration": "^3.33.2",
     "icechunk-js": "^0.4.0",
     "kdbush": "4.1.0",
@@ -93,6 +93,7 @@
     "typescript-eslint": "^8.59.0",
     "vite": "^8.0.10",
     "vite-plugin-glsl": "^1.6.0",
+    "vite-plugin-wasm": "^3.6.0",
     "vitest": "^4.1.9",
     "vue-tsc": "^3.2.7"
   },

src/lib/layers/equirectLayer.ts

@@ -594,8 +594,7 @@ export function disposeLayerMesh(mesh: THREE.Mesh): void {
   mesh.geometry?.dispose();
   const material = mesh.material as THREE.ShaderMaterial;
   const texture = material.uniforms?.maskTexture?.value as
-    | THREE.Texture
-    | undefined;
+    THREE.Texture | undefined;
   texture?.dispose();
   material?.dispose();
 }

src/lib/layers/gridExport.ts

@@ -218,8 +218,7 @@ function getGeoBounds(objects: TGridObject[]): TGeoBounds {
 
 function getTextureImageSize(texture: THREE.Texture): TExportSize | undefined {
   const image = texture.image as
-    | { width?: number; height?: number }
-    | undefined;
+    { width?: number; height?: number } | undefined;
   const width = image?.width;
   const height = image?.height;
   if (

src/lib/types/GlobeTypes.ts

@@ -43,10 +43,26 @@ export type TVarInfo = {
   attrs: zarr.Attributes;
 };
 
+export type TEllipsoid =
+  | {
+      radius: number;
+    }
+  | {
+      semi_major_axis: number;
+      inverse_flatting: number;
+    }
+  | {
+      semi_major_axis: number;
+      semi_minor_axis: number;
+    }
+  | null;
+
 export type TZarrDggsMetadata = {
   name: string;
   refinement_level: number;
   coordinate: string | null;
+  indexing_scheme: string;
+  ellipsoid: TEllipsoid;
 };
 
 export type TDataSource = {