支持mbtiles

src/Map/Cesium_Map.tsx

@@ -364,7 +364,7 @@ export class Cesium_Map extends enhance.Base {
         const maximum_level = view_config.tile_zoom_mode === "upscale" ? resource.maximum_level : Math.min(resource.maximum_level, display_maximum_level);
         return new Cesium.UrlTemplateImageryProvider({
             url: url_template_for_y_axis(resource),
-            minimumLevel: resource.minimum_level,
+            minimumLevel: 0,
             maximumLevel: maximum_level,
             tileWidth: resource.tile_size,
             tileHeight: resource.tile_size,

src/Map/Leaflet_Map.tsx

@@ -327,13 +327,13 @@ export class Leaflet_Map extends enhance.Base {
         const display_maximum_level = Math.max(imagery.minimum_level, Math.min(view_config.tile_display_maximum_level, 24));
         const max_native_zoom = Math.min(imagery.maximum_level, display_maximum_level);
         const max_zoom = Math.max(imagery.maximum_level, display_maximum_level, 24);
-        this.map.setMinZoom(imagery.minimum_level);
+        this.map.setMinZoom(0);
         this.map.setMaxZoom(max_zoom);
         if (this.map.getZoom() > max_zoom) {
             this.map.setZoom(max_zoom);
         }
         this.tile_layer = L.tileLayer(imagery.url, {
-            minZoom: imagery.minimum_level,
+            minZoom: 0,
             maxZoom: max_zoom,
             minNativeZoom: imagery.minimum_level,
             maxNativeZoom: max_native_zoom,

src/Map/Map_Resources.tsx

@@ -16,11 +16,14 @@ export type Map_Tile_Metadata = {
 export type Map_Imagery_Source_Metadata = {
     key: string
     name: string
+    tile_type: "imagery" | string
     resource: Map_Tile_Metadata
 }
 export type Map_Resources_Metadata = {
     current_imagery_key: string
+    tile_sources: Map_Imagery_Source_Metadata[]
     imagery_sources: Map_Imagery_Source_Metadata[]
+    terrain_sources: Map_Imagery_Source_Metadata[]
     imagery: Map_Tile_Metadata
     google_imagery?: Map_Tile_Metadata
     terrain: Map_Tile_Metadata
@@ -31,8 +34,8 @@ export async function load_map_resources(): Promise<Map_Resources_Metadata> {
 }
 export function imagery_source_for_key(resources: Map_Resources_Metadata, key: string): Map_Imagery_Source_Metadata {
     const source = resources.imagery_sources.find(item => item.key === key) || resources.imagery_sources[0];
-    if (source) return source;
-    return {key: "imagery", name: "本地卫星影像", resource: resources.imagery};
+    if (!source) throw new Error("No imagery source configured");
+    return source;
 }
 export function imagery_source_options(resources: Map_Resources_Metadata | null): {value: string, label: string}[] {
     return (resources?.imagery_sources || []).map(source => {