gods-eye-view/src/layers/vessels/evidence.js

import * as Cesium from 'cesium';
import { FOCUS_EVIDENCE_DEV } from './policy.js';

export function createEvidence({ vesselState, services, parts: components, layer, options }) {
const { state } = vesselState;


/** Replace live AIS rows through the production reconciliation path (DEV only). */

function _setFocusEvidenceVessels(rows = []) {
  if (!FOCUS_EVIDENCE_DEV || !state.viewer || !state.billboardCollection) {
    return { ok: false, count: 0 };
  }
  components.selection.clearVesselInspection();
  components.store.reconcileVessels(state.viewer, Array.isArray(rows) ? rows : []);
  state.count = state.vesselRecords.length;
  state.loaded = true;
  state.error = null;
  state.stale = false;
  state.lastUpdate = Date.now();
  state.transportStatus = 'synthetic';
  state.lastMessageAt = null;
  state.rawRowCount = Array.isArray(rows) ? rows.length : 0;
  state.acceptedRowCount = state.count;
  return { ok: true, count: state.count };
}


/** JSON-safe vessel alpha/position snapshot for the evidence report. */

function _focusEvidenceVesselSnapshot() {
  if (!FOCUS_EVIDENCE_DEV || !state.viewer) return [];
  return state.vesselRecords.map((record) => {
    const bb = record.billboard;
    const screen = bb?.position
      ? Cesium.SceneTransforms.worldToWindowCoordinates(state.viewer.scene, bb.position)
      : null;
    return {
      id: record.mmsi,
      show: bb?.show === true,
      alpha: bb?.color?.alpha ?? null,
      x: screen?.x ?? null,
      y: screen?.y ?? null,
    };
  });
}
return { _setFocusEvidenceVessels, _focusEvidenceVesselSnapshot };
}