feat: 3 scene rendering setup

apps/viewer/src/viewerMath.ts

@@ -9,7 +9,7 @@ import type {
 import type {
   OrbitalAnchor,
   WorldState,
-  ZoomLevel,
+  PovLevel,
 } from "./viewerTypes";
 import type { ZoomBlend } from "./viewerConstants";
 
@@ -112,19 +112,19 @@ export function computeZoomBlend(distance: number): ZoomBlend {
   return {
     localWeight: 1 - localToSystem,
     systemWeight: Math.min(localToSystem, 1 - systemToUniverse),
-    universeWeight: systemToUniverse,
+    galaxyWeight: systemToUniverse,
   };
 }
 
-export function classifyZoomLevel(distance: number): ZoomLevel {
+export function classifyPovLevel(distance: number): PovLevel {
   const blend = computeZoomBlend(distance);
-  if (blend.localWeight >= blend.systemWeight && blend.localWeight >= blend.universeWeight) {
+  if (blend.localWeight >= blend.systemWeight && blend.localWeight >= blend.galaxyWeight) {
     return "local";
   }
-  if (blend.systemWeight >= blend.universeWeight) {
+  if (blend.systemWeight >= blend.galaxyWeight) {
     return "system";
   }
-  return "universe";
+  return "galaxy";
 }
 
 export function toThreeVector(vector: Vector3Dto): THREE.Vector3 {