refactor: construct application layers from supplied sources

src/data/firmsHeatmap.js

@@ -1,33 +1,16 @@
+import { createApplicationFirms, firmsServices } from '../app/layers/firms.js';
 import { createSourceSlot } from '../app/sourceSlot.js';
-import * as Cesium from 'cesium';
 import {
-  createFirmsHeatmapLayer as createLayer,
   createFirmsHelpers,
   createFirmsSource,
 } from '../layers/firms/index.js';
-import * as render from '../renderGovernor.js';
-import * as sprites from './spriteOrder.js';
-import * as context from './contextStore.js';
-import * as picking from './pickRegistry.js';
-import * as anchors from './fireAnchors.js';
-import * as overlays from '../overlays/worldOverlay.js';
-import * as focus from '../worldFocus.js';
-const services = {
-  render,
-  sprites,
-  context,
-  picking,
-  anchors,
-  overlays,
-  focus,
-};
 const sourceSlot = createSourceSlot(
   createFirmsSource(),
   ['getSnapshot'],
   'Fire source',
 );
 export const configureFirmsSource = sourceSlot.configure;
-const helpers = createFirmsHelpers({ services });
+const helpers = createFirmsHelpers({ services: firmsServices });
 export const mapAnalystRecord = helpers.mapAnalystRecord;
 export const fireCullPosition = helpers.fireCullPosition;
 export const applyHorizonCull = helpers.applyHorizonCull;
@@ -36,22 +19,10 @@ export const buildFireCard = helpers.buildFireCard;
 export const buildCellCard = helpers.buildCellCard;
 export const applyFirmsOverlayPolicy = helpers.applyFirmsOverlayPolicy;
 
-/** Supply the local source and the application's scene service owners. */
+/** Retain the existing default feed and helper exports for direct callers. */
 export function createFirmsHeatmapLayer(options) {
-  return createLayer({
+  return createApplicationFirms({
     ...options,
-    icon: options.icon ?? '▲',
-    source: options.source ?? 'NASA FIRMS',
     feed: options.feed ?? sourceSlot.source,
-    services,
-    overlayHost: options.overlayHost ?? {
-      setEntries: overlays.setOverlayEntries,
-      setVisible: overlays.setOverlaySourceVisible,
-      clearSource: overlays.clearOverlaySource,
-      hitTest: overlays.hitTestWorldOverlay,
-    },
-    screenSpaceEventHandlerFactory:
-      options.screenSpaceEventHandlerFactory ??
-      ((viewer) => new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas)),
   });
 }