feat(map): add seamless five-band grid LOD

2026-08-05 19:36:01 +03:00
parent 2cd3b33141
commit 80e948c018
10 changed files with 638 additions and 62 deletions
@@ -0,0 +1,28 @@
+import type { MapPresentation } from "./CesiumMapRenderer.js";
+
+export type GridLodMode = "3d" | "graticule";
+export type GridLodBand = {
+  index: number;
+  id: string;
+  maxHeightKm: number;
+  stepKm: number;
+  mode: GridLodMode;
+};
+
+export const GRID_LOD_HYSTERESIS_RATIO: number;
+export function gridLodBands(settings: MapPresentation): GridLodBand[];
+export function selectGridLod(
+  settings: MapPresentation,
+  cameraHeightKm: number,
+  previousIndex?: number | null,
+): GridLodBand;
+export function resolveGridMode(
+  settings: MapPresentation,
+  requestedMode: GridLodMode,
+  viewAngleFromNadirDegrees: number,
+): GridLodMode | "hidden";
+export function gridShouldBeVisible(settings: MapPresentation, cameraHeightKm: number): boolean;
+export function snapGridCenter(
+  center: { latitude: number; longitude: number },
+  settings: MapPresentation,
+): { latitude: number; longitude: number };