Operations Map
Review geographic reports for the base-support team at fictional Camp Meridian. The map leads the workspace; selected details keep the report’s position, uncertainty and source in view. The 12:00 UTC exercise snapshot includes relay teams, survey teams, support equipment, a gate post and a vehicle last reported at 11:42 UTC. A reserve radio kit has no reported position, and a remote relay team sits beyond the initial map extent. The map uses local vectors with no external requests.
Interactive product exampleOpen workspace ↗
Camp Meridian · base support
Fictional exercise · Base support network
current
Equipment map
Focus the viewport and use arrow keys to pan, plus or minus to zoom. Use equipment markers for location choices. Equipment records remain available for inspection, including unknown positions.
1 record has an unknown position.
Loading map renderer…
Map controls
Zoom 16
Bearing 0°
Map scale
Scale unavailable
Center 37.800000°, -122.300000° (latitude, longitude)
Choose a marker to preview. Pin it to keep its details beside the map.
Layers and legend
Map layers
Top of this list is drawn on top of the map.
100%
100%
100%
80%
35%
30%
70%
Map legend
Equipment
Point
A position does not establish condition or data freshness.
Supplied coverage
Area
Dashed
A supplied outline does not establish live sensor coverage.
Reported track
Line
Solid
Only supplied samples; gaps are not reconstructed.
Position uncertainty
Area
Dashed
Approximate supplied radius around a report.
Measurement
Line
Solid
Approximate distance between the two reviewed endpoints.
Saved annotation
Point
Report results
9 shown · 9 matching · 9 supplied. Scope: all records. Counts include only the supplied collection.
Map extent is not available. All records includes unknown and unsupported positions.
| Reports | ID | Condition | Data quality | Position | Details |
|---|---|---|---|---|---|
| Relay team Alpha | RELAY-01 | Available | current | reported37.800500°, -122.301800° (latitude, longitude) | |
| Relay generator 01 | GEN-01 | Inspection due | current | reported37.800500°, -122.301800° (latitude, longitude) | |
| Survey team Bravo | TEAM-02 | On station | current | reported37.800300°, -122.299680° (latitude, longitude) | |
| Survey team Charlie | TEAM-03 | On station | current | reported37.800330°, -122.299620° (latitude, longitude) | |
| Logistics command post | CP-01 | Available | current | reported37.801050°, -122.298500° (latitude, longitude) | |
| Gate observation post | OBS-03 | Available | current | reported37.799400°, -122.300700° (latitude, longitude) | |
| Support vehicle 07 | TRUCK-07 | Last-known available | stale | last-known37.798300°, -122.297900° (latitude, longitude) | |
| Reserve radio kit 04 | RADIO-04 | Condition not reported | unknown | unknownPosition unknown | |
| Remote relay team | RELAY-09 | Inspection due | current | reported37.814000°, -122.273000° (latitude, longitude) |
Coordinates and bookmarks
Measurement
Approximate great-circle distance between two WGS84 points. Terrain, routing and height are not included.
Choose two points to measure.
Annotations
Supplied annotations
No saved annotations supplied for this source.
Simulation controls
Reports, positions and freshness
Choose a marker to inspect the report at that location. A group opens a list of its stable record IDs, so exact overlaps remain distinguishable. Selection takes effect only when the caller accepts onSelectedIdChange. Pin in Inspector moves keyboard focus to the selected details. The table's Inspect action provides the same route without pointing at the map.
Selection survives panning, zooming, filtering and hidden layers. Details explain when the selected report is outside the current filter or map extent. Locate selected report centers the map on its supplied position without changing the filter or selection. When the selected report disappears, the Inspector retains its last-known content and original source ID, label and revision, and marks its data unavailable. If the workspace switches to a different source, the old provenance stays explicit and locating that retained report is unavailable. An externally supplied selection or revision update does not move focus. Closing deliberate inspection returns to the connected invoking control, or the named Report results region when that control has disappeared.
All records includes unknown, invalid and unsupported positions. Map extent includes matching records whose supplied positions fall within the current geographic viewport, including reports hidden by a layer preference. Counts describe the supplied snapshot; they do not imply unloaded service records. Disabling the map or losing the renderer falls back to All records with a visible explanation. Filtering never silently clears the selected identity. Duplicate or empty record IDs block ambiguous inspection and editing requests.
The viewport accepts arrow keys for panning and plus/minus for zooming. MapControls provides labeled navigation buttons, fit-to-data and north reset. The reports table, coordinate forms and annotation list remain independent keyboard routes. A map scale is shown only when the renderer supplies a valid resolution.
Source and geometry
Coordinates use WGS84 [longitude, latitude] in the data model. Forms label latitude and longitude separately. This Web Mercator reference supports longitude ±180°, latitude ±85.05112878°, zoom 2–20 and bearing 0–359.999…°. Invalid saved camera values are declined. Zero coordinates, north bearing, zero uncertainty and fractional opacity retain their meaning.
Collection availability (current, partial, offline, unavailable), report data quality, reported condition and position state (reported, last-known, unknown) describe separate facts. Supplied observation times remain explicit. The Inspector exposes each track sample's time and coordinates, coverage vertices, and the reported uncertainty radius. Lines connect supplied samples without reconstructing missing observations. Coverage is a supplied outline, rather than a claim of current sensor visibility. Uncertainty circles and two-point measurements are approximate geographic displays. The geographic markers identify supplied reports; they do not claim conformance to military symbology standards. C2 icons serve as interface controls.
The Layers and legend section controls visibility, opacity and order for annotations, measurement, equipment, tracks, uncertainty, coverage and the site plan. Legend symbols match the renderer's point, line, dashed area and token colors. Hiding reports leaves selected details and the table available.
Coordinates, bookmarks and measurement
Go to location checks both the committed coordinates and invalid local text. A partially typed or invalid number cannot submit a previous valid location. The map uses the same geographic bounds for coordinate entry, bookmarks and tools.
A bookmark contains a stable ID, a name of 1–80 characters, a complete view and every supported layer preference. Save bookmark requests a controlled list change; the rendered list reflects the host's accepted values. Restoring validates the complete saved view and layer set first. Duplicate IDs and corrupt saved preferences cannot be restored. Removal is explicit. The example bounds the supplied bookmark list to 100 when adding views and has no storage effects.
Measurement accepts two map clicks or two coordinate entries. A third click begins a new pair. Readouts retain both endpoints and display approximate great-circle distance in meters or kilometers, including zero distance. Terrain, altitude and routes are outside this calculation. Clear measurement clears both the rendered line and any local coordinate drafts.
Annotation outcomes
Open Annotations, enter a label of 1–120 characters, and supply a point using coordinate entry, a map click or Use selected position. Save annotation invokes the optional onCreateAnnotation(draft) adapter. The draft includes the source ID. A successful result must contain a new unique annotation ID and the exact submitted label, point and source, with a valid creation timestamp. Failed, malformed or mismatched results retain the draft. Repeated activation while pending cannot submit a duplicate request.
Source identity/revision changes, capability removal and unmount invalidate local observation of an outstanding save. This does not cancel a service operation. A transport error says the outcome could not be confirmed; reconcile the supplied annotations before trying again. Applications must also guard their own asynchronous publication against source changes—the recipe cannot undo side effects performed inside a caller's adapter. The reference host captures and checks its source revision before publishing.
Simulation controls, below the workspace, exercise offline sources, rejected saves and missing tiles.
The host owns annotations and publishes accepted entries there. A valid returned success can confirm the service accepted the save, while the list still reflects only supplied annotations. Removal is available only when onRemoveAnnotation(id) is supplied; requesting removal does not claim persistence. Annotations for another source stay outside this view. Invalid or duplicate supplied annotation identities produce an explicit notice.
State ownership and installation
OperationsMap accepts snapshot, controlled selectedId/onSelectedIdChange, controlled bookmarks/onBookmarksChange, annotations, optional annotation adapters, optional initialView and optional tileSource. The recipe owns local view, filter, extent choice, layer preferences and tool drafts. The snapshot provides ID, revision, source label, observation time, availability, reports and site features. Up to 5,000 supplied reports are accepted by the reference workflow. It does not fetch, persist, geocode or infer editing permission from a status color.
The core MapControls, LayerControl, MapLegend, MapScale and CoordinateInput components have no engine dependency. Copying this recipe requires the optional OpenLayers dependency:
pnpm add ol@10.10.0GeoMap lazily loads its local engine module when enabled and disposes it when disabled or unmounted. The default fixture renders site vectors without a network basemap. To use background tiles, supply { url, attribution } through tileSource; the application owns the URL, credentials, network policy, licensing and availability. Attribution remains visible, tile failure is separate from source quality, and failed background tiles leave local vectors and the table usable. No offline tile cache is implied.
Keep the copied TypeScript modules together so their relative imports resolve. Use the standard OPERATOR token stylesheet and Tailwind setup, including a content scan of @operator-ds/react/dist. This reference demonstrates interaction and failure handling; automated tests do not establish geographic survey accuracy or suitability for a deployed operational environment.
import { OperationsMapDemo } from "./patterns/geospatial-workspace";
<OperationsMapDemo />View recipe source (16 files)
Copy all files into your app, preserving their relative paths.
Package imports: @operator-ds/react, ol, react.
patterns/geospatial-workspace/index.ts
export { GeospatialWorkspace as OperationsMap, GeospatialWorkspace } from "./geospatial-workspace";
export { OperationsMapDemo, GeospatialWorkspaceDemo } from "./demo";
export { GeoMap } from "./geo-map";
export {
initialGeoLayers,
initialGeoView,
utilitySnapshot,
utilityEntities,
utilitySite,
} from "./fixtures";
export type {
GeospatialWorkspaceProps,
GeospatialWorkspaceProps as OperationsMapProps,
GeoMapProps,
GeoPoint,
GeoView,
GeoEntity,
GeoSnapshot,
GeoAnnotation,
GeoAnnotationDraft,
GeoAnnotationResult,
GeoBookmark,
GeoTileSource,
} from "./types";
patterns/geospatial-workspace/geospatial-workspace.tsx
"use client";
import { useCallback, useEffect, useId, useLayoutEffect, useMemo, useRef, useState } from "react";
import {
Badge,
Button,
CoordinateInput,
DescriptionList,
EntityPreview,
Input,
Inspector,
LayerControl,
MapControls,
MapLegend,
MapScale,
type CoordinateValue,
type EntityPreviewRecord,
type MapLegendItem,
} from "@operator-ds/react";
import { formatUtcInstant } from "../operational-domain";
import { GeoMap } from "./geo-map";
import { ReportResults } from "./report-results";
import { UtcStamp } from "./utc-stamp";
import { distanceMeters, getFitView, isGeoPoint, moveGeoView } from "./geometry";
import {
defaultGeoLayers,
filterGeoEntities,
formatGeoPosition,
geoKnownIds,
getAnnotationDraftError,
getGeoFrameError,
getGeoSnapshotError,
isValidGeoView,
parseGeoAnnotationResult,
parseGeoBookmark,
retainGeoEntity,
retainedEntityPreview,
} from "./workspace-state";
import type {
GeoAnnotationDraft,
GeoEntity,
GeoFrame,
GeoMapMode,
GeoPoint,
GeoView,
GeospatialWorkspaceProps,
} from "./types";
const focusStyle =
"outline-none focus-visible:shadow-oprt-focus forced-colors:focus-visible:outline forced-colors:focus-visible:outline-2 forced-colors:focus-visible:outline-[CanvasText]";
const headingStyle = "m-0 font-medium uppercase tracking-oprt-sm";
const summaryStyle = `min-h-[var(--oprt-height-sm)] cursor-pointer py-1u text-oprt-base font-medium uppercase tracking-oprt-sm ${focusStyle}`;
const legendItems: readonly MapLegendItem[] = [
{
id: "equipment",
label: "Equipment",
kind: "point",
variant: "accent",
description: "A position does not establish condition or data freshness.",
},
{
id: "coverage",
label: "Supplied coverage",
kind: "area",
variant: "info",
pattern: "dashed",
description: "A supplied outline does not establish live sensor coverage.",
},
{
id: "track",
label: "Reported track",
kind: "line",
variant: "accent",
description: "Only supplied samples; gaps are not reconstructed.",
},
{
id: "uncertainty",
label: "Position uncertainty",
kind: "area",
variant: "warning",
pattern: "dashed",
description: "Approximate supplied radius around a report.",
},
{
id: "measurement",
label: "Measurement",
kind: "line",
variant: "warning",
description: "Approximate distance between the two reviewed endpoints.",
},
{ id: "annotation", label: "Saved annotation", kind: "point", variant: "warning" },
];
const blank: CoordinateValue = { latitude: null, longitude: null };
const coordinate = (point: GeoPoint): CoordinateValue => ({
latitude: point[1],
longitude: point[0],
});
function point(value: CoordinateValue): GeoPoint | null {
const candidate = [value.longitude, value.latitude];
return isGeoPoint(candidate) ? candidate : null;
}
function missingRecord(id: string): EntityPreviewRecord {
return {
id,
name: "Unavailable report",
facts: [],
quality: {
state: "unavailable",
updatedAt: null,
detail: "No last-known detail for this identity is available in this session.",
},
};
}
type FocusRequest = { kind: "inspect"; id: string; origin: HTMLElement | null } | { kind: "close" };
/** Reference workflow. Supplied identities, annotations and bookmarks remain authoritative. */
export function GeospatialWorkspace(props: GeospatialWorkspaceProps) {
const {
snapshot,
selectedId,
onSelectedIdChange,
bookmarks,
onBookmarksChange,
annotations,
onCreateAnnotation,
onRemoveAnnotation,
initialView,
tileSource,
} = props;
const sourceError = useMemo(() => getGeoSnapshotError(snapshot), [snapshot]);
const entities = useMemo(() => (sourceError ? [] : snapshot.entities), [sourceError, snapshot]);
const [view, setView] = useState(() =>
isValidGeoView(initialView) ? initialView : getFitView(entities),
);
const [layers, setLayers] = useState(() => defaultGeoLayers.map((layer) => ({ ...layer })));
const [query, setQuery] = useState("");
const filtered = useMemo(() => filterGeoEntities(entities, query), [entities, query]);
const [mapEnabled, setMapEnabled] = useState(true);
const [frameReport, setFrameReport] = useState<{
snapshot: typeof snapshot;
query: string;
frame: GeoFrame;
} | null>(null);
const frame = frameReport?.snapshot === snapshot && mapEnabled ? frameReport.frame : null;
const [scope, setScope] = useState<"all" | "extent">("all");
const [extentNotice, setExtentNotice] = useState("");
const [mode, setMode] = useState<GeoMapMode>("inspect");
const [retained, setRetained] = useState<{
entity: GeoEntity;
source: { id: string; revision: string; label: string };
} | null>(null);
const currentSelected = entities.find((entity) => entity.record.id === selectedId);
const retainedSelection = retained?.entity.record.id === selectedId ? retained : null;
const selected = currentSelected ?? retainedSelection?.entity ?? null;
const reportSource = currentSelected
? { id: snapshot.id, revision: snapshot.revision, label: snapshot.source }
: (retainedSelection?.source ?? null);
const fromOtherSource = reportSource !== null && reportSource.id !== snapshot.id;
const selectedInFilter = filtered.some((entity) => entity.record.id === selectedId);
const preview =
selectedId === null
? null
: selected
? retainedEntityPreview(selected, !currentSelected)
: missingRecord(selectedId);
// The extent narrows the list only in that scope, so a map frame leaves "all records" alone.
const extentFrame = scope === "extent" ? frame : null;
const displayed = useMemo(() => {
if (!extentFrame) return filtered;
const visible = new Set(extentFrame.visibleIds);
return filtered.filter((entity) => visible.has(entity.record.id));
}, [extentFrame, filtered]);
const knownIds = useMemo(() => geoKnownIds(filtered), [filtered]);
const resultsRef = useRef<HTMLElement>(null);
const inspectorRef = useRef<HTMLElement>(null);
const originRef = useRef<HTMLElement | null>(null);
const [focusRequest, setFocusRequest] = useState<FocusRequest | null>(null);
const previousSelection = useRef(selectedId);
const inputId = useId();
const [goValue, setGoValue] = useState<CoordinateValue>(() => coordinate(view.center));
const [goInvalid, setGoInvalid] = useState(false);
const [goError, setGoError] = useState("");
const [bookmarkName, setBookmarkName] = useState("");
const [bookmarkNotice, setBookmarkNotice] = useState("");
const bookmarkSequence = useRef(0);
const [measurement, setMeasurement] = useState<readonly GeoPoint[]>([]);
const [endpoints, setEndpoints] = useState<readonly CoordinateValue[]>([blank, blank]);
const [endpointInvalid, setEndpointInvalid] = useState([false, false]);
const [measurementError, setMeasurementError] = useState("");
const [measurementKey, setMeasurementKey] = useState(0);
const [annotationValue, setAnnotationValue] = useState<CoordinateValue>(blank);
const [annotationInvalid, setAnnotationInvalid] = useState(false);
const [annotationKey, setAnnotationKey] = useState(0);
const [annotationLabel, setAnnotationLabel] = useState("");
const [annotationNotice, setAnnotationNotice] = useState("");
const [annotationPending, setAnnotationPending] = useState(false);
const pendingAnnotation = useRef<{
sourceId: string;
revision: string;
draft: GeoAnnotationDraft;
} | null>(null);
const mounted = useRef(true);
const latest = useRef({ snapshot, query, sourceError, onCreateAnnotation });
latest.current = { snapshot, query, sourceError, onCreateAnnotation };
useEffect(() => {
mounted.current = true;
return () => {
mounted.current = false;
pendingAnnotation.current = null;
};
}, []);
useEffect(() => {
if (selectedId === null) setRetained(null);
else if (currentSelected)
setRetained({
entity: retainGeoEntity(currentSelected),
source: { id: snapshot.id, revision: snapshot.revision, label: snapshot.source },
});
else setRetained((old) => (old?.entity.record.id === selectedId ? old : null));
}, [currentSelected, selectedId, snapshot.id, snapshot.revision, snapshot.source]);
useLayoutEffect(() => {
if (focusRequest?.kind === "inspect" && selectedId === focusRequest.id) {
originRef.current = focusRequest.origin;
inspectorRef.current?.focus({ preventScroll: true });
} else if (focusRequest?.kind === "close" && selectedId === null) {
const origin = originRef.current;
(origin?.isConnected && !origin.hasAttribute("disabled")
? origin
: resultsRef.current
)?.focus({ preventScroll: true });
originRef.current = null;
} else if (previousSelection.current !== selectedId) originRef.current = null;
previousSelection.current = selectedId;
if (focusRequest) setFocusRequest(null);
}, [focusRequest, selectedId]);
useEffect(() => {
if (scope === "extent" && !frame) {
setScope("all");
setExtentNotice("Map extent is unavailable; showing all records that match the filter.");
}
}, [scope, frame]);
useEffect(() => {
const pending = pendingAnnotation.current;
if (
pending &&
(pending.sourceId !== snapshot.id ||
pending.revision !== snapshot.revision ||
sourceError ||
!onCreateAnnotation)
) {
pendingAnnotation.current = null;
setAnnotationPending(false);
setAnnotationNotice(
"The source or editing capability changed. The draft is retained; the earlier request may still complete at the service.",
);
}
if (!onCreateAnnotation) setMode((old) => (old === "annotate" ? "inspect" : old));
}, [snapshot.id, snapshot.revision, sourceError, onCreateAnnotation]);
const reportFrame = useCallback(
(next: GeoFrame | null) => {
if (
latest.current.snapshot !== snapshot ||
latest.current.query !== query ||
latest.current.sourceError
)
return;
const error = next ? getGeoFrameError(next, filtered, knownIds) : null;
if (error) setExtentNotice(error);
setFrameReport(next && !error ? { snapshot, query, frame: next } : null);
},
[snapshot, query, filtered, knownIds],
);
function inspect(id: string) {
if (sourceError || !entities.some((entity) => entity.record.id === id)) return;
setFocusRequest({
kind: "inspect",
id,
origin: document.activeElement instanceof HTMLElement ? document.activeElement : null,
});
onSelectedIdChange(id);
}
function selectOnMap(id: string | null) {
if (!sourceError && (id === null || entities.some((entity) => entity.record.id === id)))
onSelectedIdChange(id);
}
function acceptPoint(next: GeoPoint) {
if (!isGeoPoint(next) || sourceError) return;
if (mode === "measure") {
const updated = measurement.length === 1 ? [measurement[0]!, next] : [next];
setMeasurement(updated);
setEndpoints([coordinate(updated[0]!), updated[1] ? coordinate(updated[1]) : blank]);
setEndpointInvalid([false, false]);
setMeasurementKey((old) => old + 1);
setMeasurementError("");
} else if (mode === "annotate" && onCreateAnnotation && !annotationPending) {
setAnnotationValue(coordinate(next));
setAnnotationInvalid(false);
setAnnotationKey((old) => old + 1);
setAnnotationNotice("");
}
}
// The map is given functions that never change, so a frame that re-renders this workspace does
// not re-render the map as well. They call the latest version of each handler.
const handlers = useRef({ inspect, selectOnMap, acceptPoint });
handlers.current = { inspect, selectOnMap, acceptPoint };
const inspectStable = useCallback((id: string) => handlers.current.inspect(id), []);
const selectOnMapStable = useCallback(
(id: string | null) => handlers.current.selectOnMap(id),
[],
);
const acceptPointStable = useCallback((next: GeoPoint) => handlers.current.acceptPoint(next), []);
const changeView = useCallback((next: GeoView) => {
if (isValidGeoView(next)) setView(next);
}, []);
function saveBookmark() {
let id = `view-${inputId}-${++bookmarkSequence.current}`;
while (bookmarks.some((bookmark) => bookmark.id === id))
id = `view-${inputId}-${++bookmarkSequence.current}`;
const parsed = parseGeoBookmark({ id, name: bookmarkName.trim(), view, layers });
if (!parsed.ok) {
setBookmarkNotice(parsed.error);
return;
}
if (bookmarks.length >= 100) {
setBookmarkNotice(
"Remove a bookmark before adding another; this example supports up to 100 supplied views.",
);
return;
}
try {
onBookmarksChange([...bookmarks, parsed.value]);
setBookmarkNotice(
"Bookmark update requested. The list shows the views accepted by the host.",
);
} catch {
setBookmarkNotice("The bookmark update failed. The current view and name are retained.");
}
}
async function saveAnnotation() {
if (pendingAnnotation.current || !onCreateAnnotation || sourceError) return;
const location = point(annotationValue);
const draft = { label: annotationLabel.trim(), position: location, sourceId: snapshot.id };
const error = annotationInvalid
? "Complete valid annotation coordinates before saving."
: getAnnotationDraftError(draft);
if (error || !location) {
setAnnotationNotice(error ?? "Enter a valid annotation position.");
return;
}
const request = {
sourceId: snapshot.id,
revision: snapshot.revision,
draft: Object.freeze({ ...draft, position: Object.freeze([...location]) as GeoPoint }),
};
const existing = [...annotations];
const adapter = onCreateAnnotation;
pendingAnnotation.current = request;
setAnnotationPending(true);
setAnnotationNotice("");
const isCurrent = () =>
mounted.current &&
pendingAnnotation.current === request &&
latest.current.snapshot.id === request.sourceId &&
latest.current.snapshot.revision === request.revision &&
!latest.current.sourceError &&
Boolean(latest.current.onCreateAnnotation);
try {
const result = await adapter(request.draft);
if (!isCurrent()) return;
const parsed = parseGeoAnnotationResult(result, request.draft, existing);
if (!parsed.ok) setAnnotationNotice(parsed.error);
else if (parsed.value.status === "failed") setAnnotationNotice(parsed.value.message);
else {
setAnnotationNotice(
`Annotation saved: ${parsed.value.annotation.label}. The list reflects supplied annotations.`,
);
setMode("inspect");
}
} catch {
if (isCurrent())
setAnnotationNotice(
"The annotation outcome could not be confirmed. The draft is retained; check the source before trying again.",
);
} finally {
if (pendingAnnotation.current === request) {
pendingAnnotation.current = null;
if (mounted.current) setAnnotationPending(false);
}
}
}
const meters = measurement.length === 2 ? distanceMeters(measurement[0]!, measurement[1]!) : null;
const duplicateBookmarks = new Set(
bookmarks
.filter(
(bookmark, index) => bookmarks.findIndex((other) => other.id === bookmark.id) !== index,
)
.map((bookmark) => bookmark.id),
);
const validAnnotations = useMemo(() => {
const occurrences = new Map<string, number>();
for (const annotation of annotations)
occurrences.set(annotation.id, (occurrences.get(annotation.id) ?? 0) + 1);
return annotations.filter(
(annotation) =>
!getAnnotationDraftError({
label: annotation.label,
position: annotation.position,
sourceId: annotation.sourceId,
}) &&
typeof annotation.id === "string" &&
annotation.id.trim() !== "" &&
occurrences.get(annotation.id) === 1,
);
}, [annotations]);
// The map compares what it draws by identity, so this list changes only when its content can.
const sourceAnnotations = useMemo(
() => validAnnotations.filter((annotation) => annotation.sourceId === snapshot.id),
[validAnnotations, snapshot.id],
);
return (
<section
aria-label="Operations map"
className="not-prose flex min-w-0 flex-col gap-3u font-sans text-oprt-base text-oprt-text"
>
<header className="flex min-w-0 flex-wrap items-start justify-between gap-2u border-b border-oprt-border pb-2u">
<div className="flex min-w-0 flex-col gap-1u">
<h2 className="m-0 text-oprt-xl font-semibold">{snapshot.title ?? "Operations map"}</h2>
<p className="m-0 text-oprt-text-dim [overflow-wrap:anywhere]">{snapshot.source}</p>
</div>
<div className="flex flex-wrap items-center gap-2u">
{snapshot.observedAt && (
<time
dateTime={snapshot.observedAt}
className="font-mono text-oprt-sm text-oprt-text-dim"
>
{formatUtcInstant(snapshot.observedAt)}
</time>
)}
<Badge
appearance="text"
variant={snapshot.availability === "current" ? "success" : "warning"}
>
{snapshot.availability}
</Badge>
<Button
size="sm"
variant="tertiary"
onClick={() => {
setMapEnabled(!mapEnabled);
setFrameReport(null);
}}
>
{mapEnabled ? "Disable map" : "Enable map"}
</Button>
</div>
</header>
{snapshot.availability !== "current" && (
<p role="status" className="m-0 text-oprt-warning">
{snapshot.detail}
</p>
)}
{sourceError ? (
<p role="alert" className="m-0 border border-oprt-error p-2u text-oprt-error">
{sourceError}
</p>
) : (
<>
{initialView && !isValidGeoView(initialView) && (
<p role="status" className="m-0 text-oprt-warning">
The initial map view is invalid. A view fitted to the supplied positions is shown.
</p>
)}
<div className="flex min-w-0 flex-wrap items-start gap-3u">
<div className="flex min-w-0 flex-[2_1_32rem] flex-col gap-2u">
<GeoMap
snapshot={snapshot}
entities={filtered}
selectedId={selectedId}
onSelectedIdChange={selectOnMapStable}
view={view}
onViewChange={changeView}
layers={layers}
annotations={sourceAnnotations}
measurement={measurement}
mode={mode}
onPoint={acceptPointStable}
onFrame={reportFrame}
onInspect={inspectStable}
{...(tileSource ? { tileSource } : {})}
disabled={!mapEnabled}
/>
<MapControls
zoom={view.zoom}
bearing={view.bearing}
disabled={!mapEnabled || snapshot.availability === "unavailable"}
onAction={(action) => setView((old) => moveGeoView(old, action, filtered))}
/>
<div className="flex min-w-0 flex-wrap items-start justify-between gap-2u">
<MapScale metersPerPixel={frame?.metersPerPixel ?? null} />
<p className="m-0 font-mono text-oprt-text-dim">
Center {formatGeoPosition(view.center)}
</p>
</div>
<p className="m-0 text-oprt-text-dim">
{mode === "measure"
? "Measurement mode: choose two points. A third point begins a new measurement."
: mode === "annotate"
? "Annotation mode: choose a point, then review and save it in Annotations."
: "Choose a marker to preview. Pin it to keep its details beside the map."}
</p>
{mode !== "inspect" && (
<Button size="sm" variant="tertiary" onClick={() => setMode("inspect")}>
Return to inspection
</Button>
)}
</div>
{preview ? (
<Inspector
ref={inspectorRef}
title="Selected report"
tabIndex={-1}
className={`${focusStyle} min-w-0 flex-[1_1_21rem]`}
onClose={() => {
setFocusRequest({ kind: "close" });
onSelectedIdChange(null);
}}
>
<EntityPreview entity={preview} headingLevel={4} />
{selected && (
<div className="flex flex-col gap-1u border-t border-oprt-border pt-2u">
<h4 className={headingStyle}>Geographic report</h4>
{fromOtherSource && (
<p className="m-0 text-oprt-warning">
This retained report belongs to a different source. Locating it on the
current source is unavailable.
</p>
)}
<DescriptionList
layout="details"
items={[
...(reportSource
? [
{
id: "source",
label: "Report source",
value: (
<>
{reportSource.label} ·{" "}
<span className="font-mono">
{reportSource.id} / {reportSource.revision}
</span>
</>
),
},
]
: []),
{ id: "state", label: "Position state", value: selected.positionState },
{
id: "position",
label: "Position",
value: formatGeoPosition(selected.position),
mono: true,
},
{
id: "observed",
label: "Position observed",
value: <UtcStamp value={selected.observedAt} fallback="Not supplied" />,
mono: true,
},
{
id: "uncertainty",
label: "Uncertainty",
value:
typeof selected.uncertaintyMeters === "number" &&
Number.isFinite(selected.uncertaintyMeters) &&
selected.uncertaintyMeters >= 0
? `${selected.uncertaintyMeters} m supplied radius`
: "Not supplied",
mono: true,
},
{
id: "coverage",
label: "Coverage",
value: selected.coverage?.length
? "Supplied geographic outline"
: "Not supplied",
},
{
id: "track",
label: "Track",
value: `${selected.track?.length ?? 0} supplied samples`,
},
]}
/>
{selected.track && selected.track.length > 0 && (
<details>
<summary className={summaryStyle}>Reported track samples</summary>
<ol className="m-0 flex flex-col gap-1u pl-3u">
{selected.track.map((sample, index) => (
<li key={index}>
<span className="font-mono">
<UtcStamp value={sample.observedAt} fallback="Time unknown" />
</span>
<p className="m-0 font-mono [overflow-wrap:anywhere]">
{formatGeoPosition(sample.position)}
</p>
</li>
))}
</ol>
</details>
)}
{selected.coverage && selected.coverage.length > 0 && (
<details>
<summary className={summaryStyle}>Coverage outline vertices</summary>
<ol className="m-0 flex flex-col gap-1u pl-3u">
{selected.coverage.map((location, index) => (
<li key={index} className="font-mono [overflow-wrap:anywhere]">
Vertex {index + 1}: {formatGeoPosition(location)}
</li>
))}
</ol>
</details>
)}
{currentSelected && !selectedInFilter && (
<p className="m-0 text-oprt-warning">
Selected report is outside the current filter.
</p>
)}
{currentSelected &&
selectedInFilter &&
frame &&
frameReport?.query === query &&
!frame.visibleIds.includes(currentSelected.record.id) && (
<p className="m-0 text-oprt-text-dim">
Selected report is outside the map extent or has no plottable position.
</p>
)}
</div>
)}
<div className="border-t border-oprt-border pt-2u">
<Button
size="sm"
variant="secondary"
disabled={
!mapEnabled ||
snapshot.availability === "unavailable" ||
!selected ||
!isGeoPoint(selected.position) ||
fromOtherSource
}
onClick={() => {
if (selected && !fromOtherSource && isGeoPoint(selected.position))
setView((old) => ({ ...old, center: selected.position as GeoPoint }));
}}
>
Locate selected report
</Button>
</div>
</Inspector>
) : (
<div className="flex flex-col gap-2u border border-oprt-border p-2u">
<h3 className={headingStyle}>Selected report</h3>
<p className="m-0 text-oprt-text-dim">
Inspect a table record, or choose a map marker and pin its details. Reports with
unknown positions remains in All records.
</p>
<MapLegend items={legendItems} />
</div>
)}
</div>
<details className="min-w-0 border border-oprt-border p-2u">
<summary className={summaryStyle}>Layers and legend</summary>
<div className="grid min-w-0 grid-cols-[repeat(auto-fit,minmax(min(100%,24rem),1fr))] gap-3u pt-2u">
<LayerControl layers={layers} onLayersChange={(next) => setLayers([...next])} />
<MapLegend items={legendItems} />
</div>
</details>
<section
ref={resultsRef}
role="region"
aria-label="Report results"
tabIndex={-1}
className={`flex min-w-0 flex-col gap-2u border border-oprt-border p-2u ${focusStyle}`}
>
<h3 className={headingStyle}>Report results</h3>
<label htmlFor={`${inputId}-filter`} className={headingStyle}>
Filter reports
</label>
<Input
id={`${inputId}-filter`}
value={query}
onChange={(event) => setQuery(event.target.value)}
placeholder="Name, type or ID"
/>
<div role="group" aria-label="Record scope" className="flex flex-wrap gap-1u">
<Button
size="sm"
variant="secondary"
aria-pressed={scope === "all"}
onClick={() => {
setScope("all");
setExtentNotice("");
}}
>
All records
</Button>
<Button
size="sm"
variant="secondary"
aria-pressed={scope === "extent"}
disabled={!frame}
onClick={() => {
setScope("extent");
setExtentNotice("");
}}
>
Map extent
</Button>
</div>
<p role="status" className="m-0 text-oprt-text-dim">
{displayed.length} shown · {filtered.length} matching · {entities.length} supplied.{" "}
{scope === "extent" && frame ? "Scope: map extent." : "Scope: all records."} Counts
include only the supplied collection.
</p>
{extentNotice && (
<p role="status" className="m-0 text-oprt-warning">
{extentNotice}
</p>
)}
{!frame && (
<p className="m-0 text-oprt-text-dim">
Map extent is not available. All records includes unknown and unsupported positions.
</p>
)}
<ReportResults
entities={displayed}
onInspect={inspectStable}
// In the extent scope the map view is the filter: when panning or zooming changes
// which reports are listed, the table returns to its first page, as for a new query.
resetKey={`${scope}|${query}|${
scope === "extent" ? `${displayed.length}:${displayed[0]?.record.id ?? ""}` : ""
}`}
/>
{displayed.length === 0 && (
<p className="m-0">
{entities.length === 0
? "No reports were supplied."
: "No reports match this filter and scope."}
</p>
)}
</section>
<details className="min-w-0 border border-oprt-border p-2u">
<summary className={summaryStyle}>Coordinates and bookmarks</summary>
<div className="grid min-w-0 grid-cols-[repeat(auto-fit,minmax(min(100%,24rem),1fr))] gap-3u pt-2u">
<form
noValidate
className="flex min-w-0 flex-col gap-2u"
onSubmit={(event) => {
event.preventDefault();
const location = point(goValue);
if (goInvalid || !location) {
setGoError(
"Enter valid coordinates before moving the map. Supported latitude is ±85.05112878°.",
);
return;
}
setGoError("");
setView((old) => ({ ...old, center: location }));
}}
>
<CoordinateInput
label="Go to coordinates"
value={goValue}
onValueChange={setGoValue}
onValidationChange={setGoInvalid}
description="WGS84 decimal degrees. Map latitude is limited to ±85.05112878°."
/>
<Button type="submit" size="sm">
Go to location
</Button>
{goError && (
<p role="alert" className="m-0 text-oprt-error">
{goError}
</p>
)}
</form>
<div className="flex min-w-0 flex-col gap-2u">
<label htmlFor={`${inputId}-bookmark`} className={headingStyle}>
Bookmark name
</label>
<Input
id={`${inputId}-bookmark`}
maxLength={80}
value={bookmarkName}
onChange={(event) => setBookmarkName(event.target.value)}
/>
<Button size="sm" onClick={saveBookmark}>
Save bookmark
</Button>
{bookmarkNotice && (
<p role="status" className="m-0">
{bookmarkNotice}
</p>
)}
<ul className="m-0 flex list-none flex-col gap-2u p-0">
{bookmarks.map((bookmark, index) => {
const parsed = parseGeoBookmark(bookmark);
const valid = parsed.ok && !duplicateBookmarks.has(bookmark.id);
const name =
typeof bookmark.name === "string" ? bookmark.name : "Invalid bookmark";
return (
<li
key={valid ? `bookmark:${bookmark.id}` : `invalid:${index}`}
className="flex min-w-0 flex-wrap items-start gap-1u"
>
<Button
size="sm"
variant="secondary"
className="!h-auto min-h-[var(--oprt-height-sm)] min-w-0 max-w-full whitespace-normal [overflow-wrap:anywhere]"
aria-label={`Restore ${name}`}
disabled={!valid}
onClick={() => {
if (parsed.ok && valid) {
setView(parsed.value.view);
setLayers([...parsed.value.layers]);
setBookmarkNotice(`Restored ${parsed.value.name}.`);
}
}}
>
{name}
</Button>
<Button
size="sm"
variant="tertiary"
disabled={duplicateBookmarks.has(bookmark.id)}
aria-label={`Remove bookmark ${name}`}
onClick={() => {
try {
onBookmarksChange(
bookmarks.filter((item) => item.id !== bookmark.id),
);
setBookmarkNotice(
"Bookmark removal requested. The list reflects the supplied views.",
);
} catch {
setBookmarkNotice("The bookmark could not be removed.");
}
}}
>
Remove
</Button>
{!valid && (
<p className="m-0 text-oprt-error">
This bookmark has invalid or ambiguous saved preferences.
</p>
)}
</li>
);
})}
</ul>
{bookmarks.length === 0 && (
<p className="m-0 text-oprt-text-dim">No saved views supplied.</p>
)}
</div>
</div>
</details>
<details className="min-w-0 border border-oprt-border p-2u">
<summary className={summaryStyle}>Measurement</summary>
<div className="flex min-w-0 flex-col gap-2u pt-2u">
<p className="m-0 text-oprt-text-dim">
Approximate great-circle distance between two WGS84 points. Terrain, routing and
height are not included.
</p>
<div className="flex flex-wrap gap-1u">
<Button
size="sm"
aria-pressed={mode === "measure"}
onClick={() => setMode(mode === "measure" ? "inspect" : "measure")}
>
Measure on map
</Button>
<Button
size="sm"
variant="secondary"
onClick={() => {
setMeasurement([]);
setEndpoints([blank, blank]);
setEndpointInvalid([false, false]);
setMeasurementKey((old) => old + 1);
setMeasurementError("");
setMode("inspect");
}}
>
Clear measurement
</Button>
</div>
<div className="grid min-w-0 grid-cols-[repeat(auto-fit,minmax(min(100%,24rem),1fr))] gap-2u">
{endpoints.map((value, index) => (
<CoordinateInput
key={`${measurementKey}-${index}`}
label={`Measurement point ${index + 1}`}
value={value}
onValueChange={(next) =>
setEndpoints((old) =>
old.map((item, position) => (position === index ? next : item)),
)
}
onValidationChange={(invalid) =>
setEndpointInvalid((old) =>
old[index] === invalid
? old
: old.map((item, position) => (position === index ? invalid : item)),
)
}
/>
))}
</div>
<Button
size="sm"
onClick={() => {
const first = point(endpoints[0]!);
const second = point(endpoints[1]!);
if (endpointInvalid.some(Boolean) || !first || !second) {
setMeasurementError(
"Complete both valid measurement coordinates within the supported map latitude range.",
);
return;
}
setMeasurement([first, second]);
setMeasurementError("");
}}
>
Apply measurement coordinates
</Button>
{measurementError && (
<p role="alert" className="m-0 text-oprt-error">
{measurementError}
</p>
)}
{measurement.map((location, index) => (
<p key={index} className="m-0 font-mono">
Point {index + 1}: {formatGeoPosition(location)}
</p>
))}
<p role="status" className="m-0 font-mono">
{meters === null
? "Choose two points to measure."
: `Approximate distance: ${meters < 1000 ? `${Math.round(meters)} m` : `${(meters / 1000).toFixed(2)} km`}`}
</p>
</div>
</details>
<details className="min-w-0 border border-oprt-border p-2u">
<summary className={summaryStyle}>Annotations</summary>
<div className="grid min-w-0 grid-cols-[repeat(auto-fit,minmax(min(100%,24rem),1fr))] gap-3u pt-2u">
<form
noValidate
className="flex min-w-0 flex-col gap-2u"
onSubmit={(event) => {
event.preventDefault();
void saveAnnotation();
}}
>
<p className="m-0 text-oprt-text-dim">
Source:{" "}
<span className="font-mono">
{snapshot.id} / {snapshot.revision}
</span>
. Review the label and location before saving.
</p>
<label htmlFor={`${inputId}-annotation`} className={headingStyle}>
Annotation label
</label>
<Input
id={`${inputId}-annotation`}
maxLength={120}
value={annotationLabel}
disabled={!onCreateAnnotation || annotationPending}
onChange={(event) => {
setAnnotationLabel(event.target.value);
setAnnotationNotice("");
}}
/>
<CoordinateInput
key={annotationKey}
label="Annotation position"
value={annotationValue}
onValueChange={setAnnotationValue}
onValidationChange={setAnnotationInvalid}
disabled={!onCreateAnnotation || annotationPending}
/>
<div className="flex flex-wrap gap-1u">
<Button
size="sm"
variant="secondary"
disabled={
!onCreateAnnotation ||
annotationPending ||
!currentSelected ||
!isGeoPoint(currentSelected.position)
}
onClick={() => {
if (currentSelected && isGeoPoint(currentSelected.position)) {
setAnnotationValue(coordinate(currentSelected.position));
setAnnotationInvalid(false);
setAnnotationKey((old) => old + 1);
}
}}
>
Use selected position
</Button>
<Button
size="sm"
variant="secondary"
disabled={!onCreateAnnotation || annotationPending}
aria-pressed={mode === "annotate"}
onClick={() => setMode(mode === "annotate" ? "inspect" : "annotate")}
>
Annotate on map
</Button>
<Button
size="sm"
type="submit"
disabled={!onCreateAnnotation || annotationPending}
>
{annotationPending ? "Saving annotation…" : "Save annotation"}
</Button>
</div>
{!onCreateAnnotation && (
<p className="m-0 text-oprt-text-dim">
Annotation creation is unavailable; no create adapter was supplied.
</p>
)}
{annotationNotice && (
<p role="status" className="m-0">
{annotationNotice}
</p>
)}
</form>
<div className="flex min-w-0 flex-col gap-2u">
<h3 className={headingStyle}>Supplied annotations</h3>
{validAnnotations.length !== annotations.length && (
<p role="alert" className="m-0 text-oprt-error">
Some annotations have invalid or duplicate identities or positions and cannot be
shown safely.
</p>
)}
{validAnnotations.length > sourceAnnotations.length && (
<p className="m-0 text-oprt-text-dim">
Annotations for another source are outside this view.
</p>
)}
<ul className="m-0 flex list-none flex-col gap-2u p-0">
{sourceAnnotations.map((annotation) => (
<li
key={annotation.id}
className="flex min-w-0 flex-col gap-1u border border-oprt-border p-2u"
>
<p className="m-0 font-medium [overflow-wrap:anywhere]">{annotation.label}</p>
<p className="m-0 font-mono [overflow-wrap:anywhere]">
{formatGeoPosition(annotation.position)}
</p>
<p className="m-0 font-mono [overflow-wrap:anywhere]">
<UtcStamp value={annotation.createdAt} fallback="Time unknown" />
</p>
{onRemoveAnnotation && (
<Button
size="sm"
variant="tertiary"
aria-label={`Remove annotation ${annotation.label}`}
onClick={() => {
try {
onRemoveAnnotation(annotation.id);
setAnnotationNotice(
"Annotation removal requested. The list reflects the supplied source.",
);
} catch {
setAnnotationNotice("The annotation could not be removed.");
}
}}
>
Remove
</Button>
)}
</li>
))}
</ul>
{sourceAnnotations.length === 0 && (
<p className="m-0 text-oprt-text-dim">
No saved annotations supplied for this source.
</p>
)}
</div>
</div>
</details>
</>
)}
</section>
);
}
patterns/operational-domain.ts
/** Fixture context used by reusable application recipes. */
export type OperationalDomain = "military" | "industrial";
export interface UtcInstantOptions {
/**
* Whether the milliseconds are shown. "auto" (the default) shows them only when the supplied
* instant carries a non-zero fraction, because sub-second timing matters only where it exists.
*/
milliseconds?: "auto" | "always" | "never";
}
const INSTANT =
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(?:\.(\d{1,3}))?(Z|[+-]\d{2}:\d{2})$/;
/**
* Reads an ISO 8601 instant as "YYYY-MM-DD HH:MM:SS UTC", with ".mmm" after the seconds where the
* options ask for it. Text that is not a real instant (an invented date such as 30 February, or
* free text) is returned as supplied rather than reinterpreted. It never uses Intl, so the server
* and every browser print the same characters.
*/
export function formatUtcInstant(value: string, options: UtcInstantOptions = {}): string {
const parts = INSTANT.exec(value);
if (!parts) return value;
const [year, month, day, hour, minute, second] = parts.slice(1, 7).map(Number) as [
number,
number,
number,
number,
number,
number,
];
const calendar = new Date(Date.UTC(year, month - 1, day));
// Date rolls an invented day into the next month; compare it back to what was written.
if (
calendar.getUTCFullYear() !== year ||
calendar.getUTCMonth() !== month - 1 ||
calendar.getUTCDate() !== day ||
hour > 23 ||
minute > 59 ||
second > 59
)
return value;
const fraction = (parts[7] ?? "").padEnd(3, "0");
const parsed = new Date(`${value.slice(0, 19)}.${fraction}${parts[8]}`);
if (Number.isNaN(parsed.getTime())) return value;
const { milliseconds = "auto" } = options;
const showFraction = milliseconds === "always" || (milliseconds === "auto" && fraction !== "000");
const iso = parsed.toISOString();
return `${iso.slice(0, 10)} ${iso.slice(11, showFraction ? 23 : 19)} UTC`;
}
/**
* Reads epoch milliseconds as "YYYY-MM-DD HH:MM:SS UTC", with the same options as
* formatUtcInstant. A value that is not a real time reads "Unknown time" rather than throwing.
*/
export function formatUtcEpoch(ms: number, options: UtcInstantOptions = {}): string {
const date = new Date(ms);
if (!Number.isFinite(ms) || Number.isNaN(date.getTime())) return "Unknown time";
return formatUtcInstant(date.toISOString(), options);
}
patterns/geospatial-workspace/geo-map.tsx
"use client";
import {
memo,
useCallback,
useEffect,
useId,
useLayoutEffect,
useMemo,
useRef,
useState,
type RefObject,
} from "react";
import { Button, EntityPreview, Popover } from "@operator-ds/react";
import type { EngineCallbacks, EngineState, GeoEngine, TileState } from "./engine-contract";
import { isGeoPoint, normalizeGeoView, sameGeoAnchor, sameGeoFrame } from "./geometry";
import { mapDataIssues } from "./renderer-data";
import type {
GeoAnnotation,
GeoEntity,
GeoFrame,
GeoMapProps,
GeoMarkerGroup,
GeoPoint,
} from "./types";
import { UtcStamp } from "./utc-stamp";
/** One shared empty collection, so a host that passes a new `[]` each render changes nothing. */
const NO_ANNOTATIONS: readonly GeoAnnotation[] = [];
const NO_POINTS: readonly GeoPoint[] = [];
const useBrowserLayoutEffect = typeof document === "undefined" ? useEffect : useLayoutEffect;
const finitePixel = (point: readonly number[] | null) =>
point !== null && point.length === 2 && point.every(Number.isFinite);
/** One engine start. Retiring it (dispose, failure, unmount) silences every callback it issued. */
interface EngineInstance {
live: boolean;
}
interface MarkerProps {
group: GeoMarkerGroup;
records: ReadonlyMap<string, GeoEntity>;
isSelected: boolean;
open: boolean;
/** The location choice made inside this group while it is open. */
choice: string | null;
/** The supplied selection, which a choice waits for; only read while the group is open. */
selectedId: string | null;
region: RefObject<HTMLDivElement | null>;
onOpenChange: (groupId: string, open: boolean, singleId: string | null) => void;
onChoose: (groupId: string, entityId: string, origin: HTMLElement) => void;
onPin: (groupId: string, entityId: string) => void;
onCloseAutoFocus: (groupId: string, event: Event) => void;
}
const sameIds = (a: readonly string[], b: readonly string[]) =>
a === b || (a.length === b.length && a.every((item, index) => item === b[index]));
/** A marker is drawn again for what it shows, not for where it is: a pan only moves its wrapper. */
const sameMarker = (previous: MarkerProps, next: MarkerProps) =>
previous.group.id === next.group.id &&
sameIds(previous.group.ids, next.group.ids) &&
previous.records === next.records &&
previous.isSelected === next.isSelected &&
previous.open === next.open &&
previous.choice === next.choice &&
previous.selectedId === next.selectedId &&
previous.region === next.region &&
previous.onOpenChange === next.onOpenChange &&
previous.onChoose === next.onChoose &&
previous.onPin === next.onPin &&
previous.onCloseAutoFocus === next.onCloseAutoFocus;
const ClusterMarker = memo(function ClusterMarker({
group,
records,
isSelected,
open,
choice,
selectedId,
region,
onOpenChange,
onChoose,
onPin,
onCloseAutoFocus,
}: MarkerProps) {
const members = group.ids.flatMap((entityId) =>
records.has(entityId) ? [records.get(entityId)!] : [],
);
const selected =
choice && choice === selectedId && group.ids.includes(choice) ? records.get(choice) : undefined;
const single = members.length === 1 ? members[0] : undefined;
const label = single
? `${single.record.name} — ${single.record.id}`
: `${members.length} equipment at this location`;
return (
<Popover
title={selected ? "Equipment preview" : "Equipment at this location"}
open={open}
onOpenChange={(next) => onOpenChange(group.id, next, single?.record.id ?? null)}
returnFocusRef={region}
onCloseAutoFocus={(event) => onCloseAutoFocus(group.id, event)}
content={
<div className="flex max-w-[calc(var(--oprt-space-8)*5)] flex-col gap-2u">
{selected ? (
<>
<EntityPreview
entity={{
...selected.record,
facts: [
...selected.record.facts.map((fact) => ({
...fact,
id: `entity:${fact.id}`,
})),
{
id: "geo:position",
label: "Position",
value: selected.positionState,
},
{
id: "geo:observed",
label: "Observed",
value: <UtcStamp value={selected.observedAt} />,
mono: true,
},
],
}}
actions={
<Button size="sm" onClick={() => onPin(group.id, selected.record.id)}>
Pin in Inspector
</Button>
}
/>
</>
) : (
<>
<p className="m-0 normal-case">Choose a supplied record to preview its details.</p>
{members.map((entity) => (
<Button
key={entity.record.id}
size="sm"
variant="secondary"
className="!h-auto min-h-[var(--oprt-height-sm)] !whitespace-normal break-words text-left !normal-case"
onClick={(event) => onChoose(group.id, entity.record.id, event.currentTarget)}
>
{entity.record.name} — {entity.record.id}
</Button>
))}
{choice && (
<p role="status" className="normal-case">
Selection requested; waiting for the supplied selection.
</p>
)}
</>
)}
</div>
}
>
<Button
size="sm"
variant={isSelected ? "primary" : "secondary"}
aria-label={label}
aria-pressed={isSelected}
className={`whitespace-nowrap !normal-case${isSelected ? "" : " !bg-oprt-surface-1"}`}
>
{single ? single.record.id : members.length}
</Button>
</Popover>
);
}, sameMarker);
/**
* Optional renderer. All source, view and selection authority stays with its host.
*
* `snapshot`, `entities`, `annotations`, `measurement` and `layers` are compared by identity: the
* renderer redraws when the host supplies a new collection, and not when it supplies an equal one
* (a map of 2,000 reports cannot be compared by value on every pan frame). Keep a collection
* stable between changes, for example in state or memoized.
*/
export const GeoMap = memo(function GeoMap(props: GeoMapProps) {
const id = useId();
const target = useRef<HTMLDivElement>(null);
const region = useRef<HTMLDivElement>(null);
const adapter = useRef<GeoEngine | null>(null);
const instance = useRef<EngineInstance | null>(null);
const anchorFrame = useRef<GeoFrame | null>(null);
// The marker group whose preview or choices are open, for the engine callbacks, which never change
// identity and so cannot read the state.
const openGroupRef = useRef<string | null>(null);
const pinnedGroup = useRef<string | null>(null);
const choiceFocus = useRef<{
id: string;
groupId: string;
origin: HTMLElement;
dialog: HTMLElement;
source: string;
} | null>(null);
const { snapshot, entities, selectedId, layers, mode, tileSource } = props;
const annotations = props.annotations.length ? props.annotations : NO_ANNOTATIONS;
const measurement = props.measurement.length ? props.measurement : NO_POINTS;
// The view is a few numbers, not an object to compare: a pan changes these and nothing else.
const view = normalizeGeoView(props.view);
const [longitude, latitude] = view.center;
const { zoom, bearing } = view;
const tileUrl = tileSource?.url;
const tileAttribution = tileSource?.attribution;
const sourceKey = useMemo(
() => JSON.stringify([snapshot.id, snapshot.revision]),
[snapshot.id, snapshot.revision],
);
// What the engine draws. Its identity changes exactly when one of these inputs does, and it is
// the stamp that tells a current engine callback from one the next update superseded.
const state = useMemo<EngineState>(
() => ({
snapshot,
entities,
selectedId,
view: { center: [longitude, latitude], zoom, bearing },
layers,
annotations,
measurement,
mode,
...(tileUrl !== undefined && tileAttribution !== undefined
? { tileSource: { url: tileUrl, attribution: tileAttribution } }
: {}),
}),
[
snapshot,
entities,
selectedId,
longitude,
latitude,
zoom,
bearing,
layers,
annotations,
measurement,
mode,
tileUrl,
tileAttribution,
],
);
// The supplied data is checked once per change of the data, never for a change of the view.
const issues = useMemo(
() => mapDataIssues({ snapshot, entities, annotations, measurement }),
[snapshot, entities, annotations, measurement],
);
const positionedIds = useMemo(
() =>
new Set(
entities.filter((entity) => isGeoPoint(entity.position)).map((entity) => entity.record.id),
),
[entities],
);
const records = useMemo(
() => new Map(entities.map((entity) => [entity.record.id, entity])),
[entities],
);
const enabled = !props.disabled && !issues.duplicates && snapshot.availability !== "unavailable";
const latest = useRef({ props, state, enabled, positionedIds });
latest.current = { props, state, enabled, positionedIds };
const [attempt, setAttempt] = useState(0);
const [status, setStatus] = useState<"loading" | "ready" | "error">("loading");
const [error, setError] = useState("");
const [frame, setFrame] = useState<GeoFrame | null>(null);
const [tileState, setTileState] = useState<TileState>("loading");
const [openGroup, setOpenGroup] = useState<string | null>(null);
openGroupRef.current = openGroup;
const [choice, setChoice] = useState<string | null>(null);
/** Callbacks for one engine start and one state; they go quiet once either is superseded. */
const makeCallbacks = useCallback(
(expected: EngineState, owner: EngineInstance): EngineCallbacks => {
const current = () =>
owner.live && latest.current.enabled && latest.current.state === expected;
return {
onFrame(next) {
if (!current()) return;
const ids = latest.current.positionedIds;
if (
next.visibleIds.some((entityId) => !ids.has(entityId)) ||
new Set(next.visibleIds).size !== next.visibleIds.length ||
next.groups.some(
(group) =>
!isGeoPoint(group.point) ||
!finitePixel(group.pixel) ||
!group.ids.length ||
group.ids.some((entityId) => !ids.has(entityId)) ||
new Set(group.ids).size !== group.ids.length,
) ||
(next.selectedPixel !== null && !finitePixel(next.selectedPixel)) ||
(next.metersPerPixel !== null &&
(!Number.isFinite(next.metersPerPixel) || next.metersPerPixel <= 0))
)
return;
// What is open belongs to its marker group, not to the pixel it is drawn at. A frame that
// only moves the view (Fit map, a zoom, a pan, or the second frame of the renderer settling)
// moves the marker and what is open from it; it is dismissed when its group is gone or its
// equipment moved on the ground.
const open = openGroupRef.current;
if (open !== null && !sameGeoAnchor(anchorFrame.current, next, open)) {
choiceFocus.current = null;
openGroupRef.current = null;
setOpenGroup(null);
setChoice(null);
}
anchorFrame.current = next;
setFrame((previous) => (sameGeoFrame(previous, next) ? previous : next));
latest.current.props.onFrame(next);
},
onViewChange(next) {
if (current()) latest.current.props.onViewChange(normalizeGeoView(next));
},
onPoint(point) {
if (current() && latest.current.props.mode !== "inspect" && isGeoPoint(point))
latest.current.props.onPoint([point[0], point[1]]);
},
onTileState(next) {
if (current()) setTileState(next);
},
};
},
[],
);
useEffect(() => {
// This start owns the callbacks it issues. Retiring it is a write to its own object, not to a
// counter held in a ref, so the cleanup reads nothing that React might have moved on.
const owner: EngineInstance = { live: true };
instance.current = owner;
anchorFrame.current = null;
choiceFocus.current = null;
setFrame(null);
setOpenGroup(null);
setChoice(null);
latest.current.props.onFrame(null);
if (!enabled || !target.current) return;
setStatus("loading");
setError("");
setTileState("loading");
void import("./engine")
.then(({ createGeoEngine }) => {
if (!owner.live || !latest.current.enabled || !target.current) return;
const current = latest.current;
adapter.current = createGeoEngine(
target.current,
current.state,
makeCallbacks(current.state, owner),
);
setStatus("ready");
})
.catch((cause: unknown) => {
if (!owner.live) return;
owner.live = false;
adapter.current?.dispose();
adapter.current = null;
setError(cause instanceof Error ? cause.message : "Map renderer could not start.");
setStatus("error");
setFrame(null);
latest.current.props.onFrame(null);
});
return () => {
owner.live = false;
adapter.current?.dispose();
adapter.current = null;
latest.current.props.onFrame(null);
};
}, [enabled, attempt, makeCallbacks]);
useEffect(() => {
const owner = instance.current;
if (!adapter.current || !enabled || !owner?.live) return;
try {
adapter.current.update(state, makeCallbacks(state, owner));
} catch (cause: unknown) {
adapter.current.dispose();
adapter.current = null;
owner.live = false;
setError(cause instanceof Error ? cause.message : "Map renderer could not update.");
setStatus("error");
setFrame(null);
latest.current.props.onFrame(null);
}
}, [state, enabled, makeCallbacks]);
useEffect(() => {
const leave = (event: Event) => {
const pending = choiceFocus.current;
if (pending && !pending.dialog.contains(event.target as Node | null))
choiceFocus.current = null;
};
const blur = (event: FocusEvent) => {
const pending = choiceFocus.current;
// A still-connected choice explicitly blurred to nowhere is a departure;
// removing the focused choice during acceptance is handled after commit.
if (
pending &&
event.target === pending.origin &&
pending.origin.isConnected &&
!event.relatedTarget
)
choiceFocus.current = null;
};
document.addEventListener("focusin", leave, true);
document.addEventListener("pointerdown", leave, true);
document.addEventListener("focusout", blur, true);
return () => {
choiceFocus.current = null;
document.removeEventListener("focusin", leave, true);
document.removeEventListener("pointerdown", leave, true);
document.removeEventListener("focusout", blur, true);
};
}, []);
useBrowserLayoutEffect(() => {
const pending = choiceFocus.current;
if (!pending) return;
if (
!enabled ||
status !== "ready" ||
pending.groupId !== openGroup ||
pending.id !== choice ||
pending.source !== sourceKey ||
!pending.dialog.isConnected
) {
choiceFocus.current = null;
return;
}
if (selectedId !== pending.id) return;
choiceFocus.current = null;
const active = document.activeElement;
if (
pending.dialog.contains(active) ||
(active === document.body && !pending.origin.isConnected)
)
pending.dialog.focus({ preventScroll: true });
}, [choice, selectedId, openGroup, enabled, status, sourceKey]);
// The marker handlers read the latest props and write state, so they never change identity and
// a marker is not drawn again because the map around it was.
const onMarkerOpenChange = useCallback(
(groupId: string, open: boolean, singleId: string | null) => {
setOpenGroup(open ? groupId : null);
choiceFocus.current = null;
if (open) {
setChoice(singleId);
if (singleId) latest.current.props.onSelectedIdChange(singleId);
}
},
[],
);
const onMarkerChoose = useCallback(
(groupId: string, entityId: string, origin: HTMLElement) => {
const dialog = origin.closest<HTMLElement>("[role=dialog]");
choiceFocus.current = dialog
? { id: entityId, groupId, origin, dialog, source: sourceKey }
: null;
setChoice(entityId);
latest.current.props.onSelectedIdChange(entityId);
},
[sourceKey],
);
const onMarkerPin = useCallback((groupId: string, entityId: string) => {
pinnedGroup.current = groupId;
setOpenGroup(null);
latest.current.props.onInspect(entityId);
}, []);
const onMarkerCloseAutoFocus = useCallback((groupId: string, event: Event) => {
if (pinnedGroup.current === groupId) {
pinnedGroup.current = null;
event.preventDefault();
}
}, []);
const entityLayer = layers.find((layer) => layer.id === "entities");
const groups =
enabled &&
status === "ready" &&
mode === "inspect" &&
entityLayer?.visible &&
entityLayer.opacity > 0
? (frame?.groups ?? [])
: [];
return (
<section
aria-labelledby={`${id}-title`}
className={`min-w-0 space-y-2u font-sans text-oprt-base text-oprt-text ${props.className ?? ""}`}
>
<h3
id={`${id}-title`}
className="m-0 text-oprt-base font-medium uppercase tracking-oprt-base"
>
Equipment map
</h3>
<p id={`${id}-help`} className="sr-only">
Focus the viewport and use arrow keys to pan, plus or minus to zoom. Use equipment markers
for location choices. Equipment records remain available for inspection, including unknown
positions.
</p>
{issues.invalid > 0 && (
<p role="status">
{issues.invalid} invalid geometr{issues.invalid === 1 ? "y" : "ies"} excluded from the
map. Review supplied coordinates in the table.{" "}
{issues.uncertainty > 0 &&
`${issues.uncertainty} uncertainty footprint${issues.uncertainty === 1 ? " is" : "s are"} excluded because of an invalid radius or unsupported projection bounds.`}
</p>
)}
{issues.unknown > 0 && (
<p>
{issues.unknown} record{issues.unknown === 1 ? " has" : "s have"} an unknown position.
</p>
)}
{issues.duplicates ? (
<p role="alert">
Duplicate or empty IDs prevent unambiguous map selection. Correct the supplied source; the
equipment records remain available.
</p>
) : props.disabled ? (
<p role="status">Map disabled. Use the table to review equipment.</p>
) : snapshot.availability === "unavailable" ? (
<p role="status">Map source unavailable. Use the table and source recovery controls.</p>
) : null}
<div
ref={region}
role="group"
aria-label="Map viewport"
aria-describedby={`${id}-help`}
tabIndex={enabled && status === "ready" ? 0 : -1}
className="relative h-[calc(var(--oprt-space-8)*8)] min-w-0 overflow-hidden border border-oprt-border bg-oprt-surface-2 outline-none focus-visible:border-oprt-border-focus focus-visible:shadow-oprt-focus focus-visible:outline focus-visible:outline-2 focus-visible:-outline-offset-2 focus-visible:outline-oprt-border-focus forced-colors:focus-visible:outline-[CanvasText]"
>
<div
ref={target}
aria-hidden="true"
role="presentation"
className="absolute inset-0 [&_.ol-viewport]:!touch-none"
/>
{enabled && status === "loading" && (
<p role="status" className="absolute inset-x-0 top-0 m-0 bg-oprt-surface-1 p-2u">
Loading map renderer…
</p>
)}
{enabled && status === "error" && (
<div className="absolute inset-0 flex flex-col items-start gap-2u bg-oprt-surface-1 p-3u">
<p role="alert">Map renderer unavailable: {error}</p>
<Button size="sm" onClick={() => setAttempt((value) => value + 1)}>
Retry map
</Button>
</div>
)}
{groups.map((group) => {
if (!group.ids.every((entityId) => records.has(entityId))) return null;
const open = openGroup === group.id;
return (
<div
key={group.id}
className="absolute -translate-x-1/2 -translate-y-1/2"
style={{ left: group.pixel[0], top: group.pixel[1] }}
>
<ClusterMarker
group={group}
records={records}
isSelected={selectedId !== null && group.ids.includes(selectedId)}
open={open}
choice={open ? choice : null}
selectedId={open ? selectedId : null}
region={region}
onOpenChange={onMarkerOpenChange}
onChoose={onMarkerChoose}
onPin={onMarkerPin}
onCloseAutoFocus={onMarkerCloseAutoFocus}
/>
</div>
);
})}
</div>
{enabled && tileSource && (
<div className="flex flex-wrap items-center gap-2u text-oprt-text-dim">
<span className="break-words [overflow-wrap:anywhere]">{tileSource.attribution}</span>
{tileState === "loading" && <span role="status">Loading background tiles…</span>}
{tileState === "error" && (
<>
<span role="status">
Background tiles unavailable. Local vectors and the table remain available.
</span>
<Button size="sm" variant="tertiary" onClick={() => setAttempt((value) => value + 1)}>
Retry tiles
</Button>
</>
)}
</div>
)}
</section>
);
});
patterns/geospatial-workspace/engine-contract.ts
import type { GeoFrame, GeoMapProps, GeoPoint, GeoView } from "./types";
export type EngineState = Pick<
GeoMapProps,
| "snapshot"
| "entities"
| "selectedId"
| "view"
| "layers"
| "annotations"
| "measurement"
| "mode"
| "tileSource"
>;
export type TileState = "loading" | "ready" | "error";
export interface EngineCallbacks {
onFrame: (frame: GeoFrame) => void;
onViewChange: (view: GeoView) => void;
onPoint: (point: GeoPoint) => void;
onTileState: (state: TileState) => void;
}
export interface GeoEngine {
update: (state: EngineState, callbacks: EngineCallbacks) => void;
dispose: () => void;
}
patterns/geospatial-workspace/types.ts
import type { EntityPreviewRecord, LayerControlItem } from "@operator-ds/react";
/** WGS84 longitude, latitude in decimal degrees. */
export type GeoPoint = readonly [number, number];
export interface GeoView {
center: GeoPoint;
zoom: number;
bearing: number;
}
export interface GeoEntity {
record: EntityPreviewRecord;
position: GeoPoint | null;
positionState: "reported" | "last-known" | "unknown";
observedAt: string | null;
uncertaintyMeters?: number;
coverage?: readonly GeoPoint[];
track?: readonly { position: GeoPoint; observedAt: string }[];
}
export interface GeoSiteFeature {
id: string;
label: string;
kind: "building" | "road" | "water" | "boundary";
points: readonly GeoPoint[];
}
export interface GeoSnapshot {
id: string;
title?: string;
revision: string;
source: string;
observedAt: string | null;
availability: "current" | "partial" | "offline" | "unavailable";
detail?: string;
entities: readonly GeoEntity[];
site: readonly GeoSiteFeature[];
}
export interface GeoAnnotation {
id: string;
label: string;
position: GeoPoint;
sourceId: string;
createdAt: string;
}
export interface GeoAnnotationDraft {
label: string;
position: GeoPoint;
sourceId: string;
}
export type GeoAnnotationResult =
| { status: "saved"; annotation: GeoAnnotation }
| { status: "failed"; message: string };
export interface GeoBookmark {
id: string;
name: string;
view: GeoView;
layers: readonly LayerControlItem[];
}
export interface GeoMarkerGroup {
id: string;
ids: readonly string[];
point: GeoPoint;
pixel: readonly [number, number];
}
export interface GeoFrame {
view: GeoView;
visibleIds: readonly string[];
groups: readonly GeoMarkerGroup[];
selectedPixel: readonly [number, number] | null;
metersPerPixel: number | null;
}
export interface GeoTileSource {
url: string;
attribution: string;
}
export type GeoMapMode = "inspect" | "measure" | "annotate";
export interface GeoMapProps {
snapshot: GeoSnapshot;
entities: readonly GeoEntity[];
selectedId: string | null;
onSelectedIdChange: (id: string | null) => void;
view: GeoView;
onViewChange: (view: GeoView) => void;
layers: readonly LayerControlItem[];
annotations: readonly GeoAnnotation[];
measurement: readonly GeoPoint[];
mode: GeoMapMode;
onPoint: (point: GeoPoint) => void;
onFrame: (frame: GeoFrame | null) => void;
onInspect: (id: string) => void;
tileSource?: GeoTileSource;
disabled?: boolean;
className?: string;
}
export interface GeospatialWorkspaceProps {
snapshot: GeoSnapshot;
selectedId: string | null;
onSelectedIdChange: (id: string | null) => void;
annotations: readonly GeoAnnotation[];
onCreateAnnotation?: (draft: GeoAnnotationDraft) => Promise<GeoAnnotationResult>;
onRemoveAnnotation?: (id: string) => void;
bookmarks: readonly GeoBookmark[];
onBookmarksChange: (bookmarks: readonly GeoBookmark[]) => void;
initialView?: GeoView;
tileSource?: GeoTileSource;
}
patterns/geospatial-workspace/geometry.ts
import type { MapAction } from "@operator-ds/react";
import type { GeoEntity, GeoFrame, GeoPoint, GeoView } from "./types";
export const MERCATOR_LATITUDE = 85.05112878;
const radians = Math.PI / 180;
const wrap = (value: number, period: number) => ((value % period) + period) % period;
export const normalizeLongitude = (longitude: number) => wrap(longitude + 180, 360) - 180;
const finite = (value: unknown, fallback: number): number =>
typeof value === "number" && Number.isFinite(value) ? value : fallback;
const clamp = (value: number, min: number, max: number) => Math.min(max, Math.max(min, value));
const mercatorY = (latitude: number) =>
Math.log(Math.tan(Math.PI / 4 + (latitude * radians) / 2)) / (2 * Math.PI);
const latitudeFromY = (y: number) =>
(2 * Math.atan(Math.exp(y * 2 * Math.PI)) - Math.PI / 2) / radians;
export function isGeoPoint(value: unknown): value is GeoPoint {
return (
Array.isArray(value) &&
value.length === 2 &&
value.every((axis) => typeof axis === "number" && Number.isFinite(axis)) &&
Math.abs(value[0]) <= 180 &&
Math.abs(value[1]) <= MERCATOR_LATITUDE
);
}
export function normalizeGeoView(view: GeoView): GeoView {
return {
center: [
normalizeLongitude(finite(view?.center?.[0], 0)),
clamp(finite(view?.center?.[1], 0), -MERCATOR_LATITUDE, MERCATOR_LATITUDE),
],
zoom: clamp(finite(view?.zoom, 2), 2, 20),
bearing: wrap(finite(view?.bearing, 0), 360),
};
}
export function distanceMeters(a: GeoPoint, b: GeoPoint): number | null {
if (!isGeoPoint(a) || !isGeoPoint(b)) return null;
const dLat = (b[1] - a[1]) * radians,
dLon = normalizeLongitude(b[0] - a[0]) * radians;
const arc =
Math.sin(dLat / 2) ** 2 +
Math.cos(a[1] * radians) * Math.cos(b[1] * radians) * Math.sin(dLon / 2) ** 2;
return 2 * 6371008.8 * Math.asin(Math.sqrt(clamp(arc, 0, 1)));
}
export function getFitView(entities: readonly GeoEntity[]): GeoView {
const points = entities.flatMap((entity) =>
isGeoPoint(entity.position) ? [entity.position] : [],
);
if (!points.length) return { center: [0, 0], zoom: 2, bearing: 0 };
const longitudes = points.map((point) => wrap(point[0], 360)).sort((a, b) => a - b);
let largestGap = -1,
start = longitudes[0]!;
for (let index = 0; index < longitudes.length; index++) {
const next =
longitudes[(index + 1) % longitudes.length]! + (index === longitudes.length - 1 ? 360 : 0);
const gap = next - longitudes[index]!;
if (gap > largestGap) {
largestGap = gap;
start = next;
}
}
const span = 360 - largestGap;
const ys = points.map((point) => mercatorY(point[1]));
const low = Math.min(...ys),
high = Math.max(...ys);
const fraction = Math.max(span / 360, high - low);
return normalizeGeoView({
center: [start + span / 2, latitudeFromY((low + high) / 2)],
zoom: fraction > 0 ? Math.floor(Math.log2(0.7 / fraction)) : 16,
bearing: 0,
});
}
export function moveGeoView(
view: GeoView,
action: MapAction,
entities: readonly GeoEntity[],
): GeoView {
const next = normalizeGeoView(view);
if (action === "fit") return getFitView(entities);
const step = 0.25 / 2 ** next.zoom;
return normalizeGeoView({
center: [
next.center[0] + (action === "pan-east" ? 1 : action === "pan-west" ? -1 : 0) * step * 360,
latitudeFromY(
mercatorY(next.center[1]) +
(action === "pan-north" ? 1 : action === "pan-south" ? -1 : 0) * step,
),
],
zoom: next.zoom + (action === "zoom-in" ? 1 : action === "zoom-out" ? -1 : 0),
bearing: action === "reset-north" ? 0 : next.bearing,
});
}
/** Approximate spherical footprint. A rejected cap is omitted and counted by the host. */
export function getUncertaintyFootprint(
center: GeoPoint,
radius: number,
): readonly GeoPoint[] | null {
if (!isGeoPoint(center) || !Number.isFinite(radius) || radius < 0) return null;
if (radius === 0) return [];
const angularRadius = radius / 6371008.8;
// Check the complete cap, including its interior, before sampling its boundary.
if (Math.abs(center[1]) + angularRadius / radians > MERCATOR_LATITUDE) return null;
const latitude = center[1] * radians;
const sinLatitude = Math.sin(latitude),
cosLatitude = Math.cos(latitude);
const sinRadius = Math.sin(angularRadius),
cosRadius = Math.cos(angularRadius);
const points: GeoPoint[] = Array.from({ length: 64 }, (_, index) => {
const bearing = (2 * Math.PI * index) / 64;
const nextLatitude = Math.asin(
clamp(sinLatitude * cosRadius + cosLatitude * sinRadius * Math.cos(bearing), -1, 1),
);
const deltaLongitude = Math.atan2(
Math.sin(bearing) * sinRadius * cosLatitude,
cosRadius - sinLatitude * Math.sin(nextLatitude),
);
return [normalizeLongitude(center[0] + deltaLongitude / radians), nextLatitude / radians];
});
return points.every(isGeoPoint) ? points : null;
}
const same = (a: number, b: number) => a === b || (Number.isNaN(a) && Number.isNaN(b));
const samePair = (a: readonly number[], b: readonly number[]) =>
same(a[0]!, b[0]!) && same(a[1]!, b[1]!);
const sameList = (a: readonly string[], b: readonly string[]) =>
a === b || (a.length === b.length && a.every((item, index) => item === b[index]));
/**
* Whether two map frames report the same view, extent, markers and scale. Frames come about every
* animation frame, so this walks them once instead of serializing them to compare the text.
*/
export function sameGeoFrame(a: GeoFrame | null, b: GeoFrame | null): boolean {
if (a === b) return true;
if (!a || !b) return false;
if (
!samePair(a.view.center, b.view.center) ||
!same(a.view.zoom, b.view.zoom) ||
!same(a.view.bearing, b.view.bearing) ||
!sameList(a.visibleIds, b.visibleIds) ||
a.groups.length !== b.groups.length ||
(a.selectedPixel === null) !== (b.selectedPixel === null) ||
(a.selectedPixel !== null && !samePair(a.selectedPixel, b.selectedPixel!)) ||
(a.metersPerPixel === null) !== (b.metersPerPixel === null) ||
(a.metersPerPixel !== null && !same(a.metersPerPixel, b.metersPerPixel!))
)
return false;
return a.groups.every((group, index) => {
const other = b.groups[index]!;
return (
group.id === other.id &&
sameList(group.ids, other.ids) &&
samePair(group.point, other.point) &&
samePair(group.pixel, other.pixel)
);
});
}
/**
* Whether the marker group `groupId` is still anchored in `after`: the frame draws a group with that
* id (made from its members) and, where `before` had it too, at the same point on the ground. Its
* pixel and the view around it are left out on purpose: a marker moves with the map, so whatever is
* open from the marker (a preview, a list of choices) moves with it. An open marker is dismissed when
* its group is gone (out of the viewport, regrouped) or when its equipment has moved on the ground.
*/
export function sameGeoAnchor(before: GeoFrame | null, after: GeoFrame, groupId: string): boolean {
const next = after.groups.find((group) => group.id === groupId);
if (!next) return false;
const previous = before?.groups.find((group) => group.id === groupId);
return !previous || samePair(previous.point, next.point);
}
patterns/geospatial-workspace/renderer-data.ts
import { getUncertaintyFootprint, isGeoPoint } from "./geometry";
import type { EngineState } from "./engine-contract";
/** The inputs the issues depend on. The view, selection and layers do not change them. */
export type MapDataInput = Pick<
EngineState,
"snapshot" | "entities" | "annotations" | "measurement"
>;
export function mapDataIssues(state: MapDataInput): {
duplicates: boolean;
invalid: number;
unknown: number;
uncertainty: number;
} {
const duplicate = (ids: readonly string[]) =>
ids.some((id) => typeof id !== "string" || !id.trim()) || new Set(ids).size !== ids.length;
const duplicates =
duplicate(state.entities.map((entity) => entity.record.id)) ||
duplicate(state.snapshot.entities.map((entity) => entity.record.id)) ||
duplicate(state.snapshot.site.map((feature) => feature.id)) ||
duplicate(state.annotations.map((annotation) => annotation.id));
let invalid = 0,
unknown = 0,
uncertainty = 0;
for (const entity of state.entities) {
if (entity.position === null) unknown++;
else if (!isGeoPoint(entity.position)) invalid++;
if (entity.coverage && (entity.coverage.length < 3 || !entity.coverage.every(isGeoPoint)))
invalid++;
if (
entity.track &&
(entity.track.length < 2 || !entity.track.every((point) => isGeoPoint(point.position)))
)
invalid++;
if (
entity.uncertaintyMeters !== undefined &&
(!Number.isFinite(entity.uncertaintyMeters) ||
entity.uncertaintyMeters < 0 ||
(isGeoPoint(entity.position) &&
getUncertaintyFootprint(entity.position, entity.uncertaintyMeters) === null))
) {
invalid++;
uncertainty++;
}
}
for (const feature of state.snapshot.site)
if (
feature.points.length < (feature.kind === "road" ? 2 : 3) ||
!feature.points.every(isGeoPoint)
)
invalid++;
for (const annotation of state.annotations) if (!isGeoPoint(annotation.position)) invalid++;
for (const point of state.measurement) if (!isGeoPoint(point)) invalid++;
return { duplicates, invalid, unknown, uncertainty };
}
patterns/geospatial-workspace/utc-stamp.tsx
import { formatUtcInstant } from "../operational-domain";
/**
* A supplied instant as "YYYY-MM-DD HH:MM:SS UTC" in a <time> element. The date and the time with
* its zone are separate runs, so a narrow column breaks between them and never inside one. Text
* that is not an exact instant is shown as supplied, so a malformed date is never reinterpreted.
*/
export function UtcStamp({
value,
fallback = "Time unknown",
}: {
value: string | null | undefined;
fallback?: string;
}) {
if (!value) return <>{fallback}</>;
const text = formatUtcInstant(value);
if (text === value) return <>{value}</>;
return (
<time dateTime={new Date(value).toISOString()}>
<span className="inline-block">{text.slice(0, 10)}</span>{" "}
<span className="inline-block">{text.slice(11)}</span>
</time>
);
}
patterns/geospatial-workspace/engine.ts
import Map from "ol/Map.js";
import View from "ol/View.js";
import Feature from "ol/Feature.js";
import Point from "ol/geom/Point.js";
import LineString from "ol/geom/LineString.js";
import Polygon from "ol/geom/Polygon.js";
import Geometry from "ol/geom/Geometry.js";
import VectorLayer from "ol/layer/Vector.js";
import TileLayer from "ol/layer/Tile.js";
import VectorSource from "ol/source/Vector.js";
import Cluster from "ol/source/Cluster.js";
import XYZ from "ol/source/XYZ.js";
import Style from "ol/style/Style.js";
import Fill from "ol/style/Fill.js";
import Stroke from "ol/style/Stroke.js";
import CircleStyle from "ol/style/Circle.js";
import Text from "ol/style/Text.js";
import { defaults as interactions } from "ol/interaction/defaults.js";
import KeyboardPan from "ol/interaction/KeyboardPan.js";
import KeyboardZoom from "ol/interaction/KeyboardZoom.js";
import { fromLonLat, getPointResolution, toLonLat } from "ol/proj.js";
import { unByKey } from "ol/Observable.js";
import type { EventsKey } from "ol/events.js";
import type { Coordinate } from "ol/coordinate.js";
import type { StyleLike } from "ol/style/Style.js";
import type { EngineCallbacks, EngineState, GeoEngine } from "./engine-contract";
import { createFeatureTracker, unwrapLongitude, type FeatureData } from "./feature-data";
import { isGeoPoint, normalizeGeoView, normalizeLongitude, sameGeoFrame } from "./geometry";
import type { GeoFrame, GeoPoint, GeoView } from "./types";
const layerIds = [
"site",
"coverage",
"uncertainty",
"tracks",
"entities",
"measurement",
"annotations",
] as const;
type LayerId = (typeof layerIds)[number];
const radian = Math.PI / 180;
const publicPoint = (coordinate: Coordinate): GeoPoint => {
const point = toLonLat(coordinate);
return [normalizeLongitude(point[0]!), point[1]!];
};
const near = (a: number, b: number) => Math.abs(a - b) < 0.0000001;
const sameView = (a: GeoView, b: GeoView) =>
near(a.center[0], b.center[0]) &&
near(a.center[1], b.center[1]) &&
near(a.zoom, b.zoom) &&
near(a.bearing, b.bearing);
/** Loaded only by GeoMap's enabled client effect. It never creates a remote source by default. */
export function createGeoEngine(
target: HTMLElement,
initial: EngineState,
initialCallbacks: EngineCallbacks,
): GeoEngine {
let state = initial,
callbacks = initialCallbacks,
disposed = false;
let pendingFrame = 0,
lastFrame: GeoFrame | null = null,
tileKey = "",
tileFailed = false,
tileLoads = 0;
const keys: EventsKey[] = [],
tileKeys: EventsKey[] = [];
const features = createFeatureTracker();
const theme = getComputedStyle(target);
const token = (name: string) => theme.getPropertyValue(`--oprt-${name}`).trim();
const forced = window.matchMedia("(forced-colors: active)").matches;
const colors = {
text: forced ? "CanvasText" : token("text"),
muted: forced ? "CanvasText" : token("text-dim"),
surface: forced ? "Canvas" : token("surface-2"),
line: forced ? "CanvasText" : token("border-strong"),
accent: forced ? "Highlight" : token("accent"),
info: forced ? "CanvasText" : token("info"),
warning: forced ? "CanvasText" : token("warning"),
water: forced ? "Canvas" : token("info-subtle"),
};
if (Object.values(colors).some((value) => !value))
throw new Error("OPERATOR theme tokens are unavailable.");
const lineWidth = parseFloat(token("chart-stroke-width"));
const pointRadius = parseFloat(token("space-0-5"));
if (![lineWidth, pointRadius].every((value) => Number.isFinite(value) && value > 0))
throw new Error("OPERATOR geometry tokens are unavailable.");
const font = `${token("weight-sm")} ${token("type-base")} ${token("font-sans")}`;
const stroke = (color: string, dashed = false) =>
new Stroke({
color,
width: lineWidth,
...(dashed ? { lineDash: [pointRadius, pointRadius] } : {}),
});
const pointStyle = new Style({
image: new CircleStyle({
radius: pointRadius,
stroke: stroke(colors.accent),
fill: new Fill({ color: colors.surface }),
}),
});
// Styles are built once. OpenLayers asks for a style per feature on every render, so a function
// that built new objects would allocate a Stroke or Fill for each feature on each frame of a pan.
const coverageStyle = new Style({ stroke: stroke(colors.info, true) });
const uncertaintyStyle = new Style({ stroke: stroke(colors.warning, true) });
const markStyle = (color: string) =>
new Style({
stroke: stroke(color),
image: new CircleStyle({ radius: pointRadius, fill: new Fill({ color: colors.warning }) }),
});
const tracksStyle = markStyle(colors.accent);
const measurementStyle = markStyle(colors.warning);
// Site and annotation styles depend on the feature's kind and label (and on the zoom, for the
// site's labels), so they are kept by those values and shared between features.
const siteStyles = new globalThis.Map<string, Style>();
const annotationStyles = new globalThis.Map<string, Style>();
const siteStyle = (kind: string, label: string, labeled: boolean) => {
const key = labeled ? `${kind}\n${label}` : kind;
let style = siteStyles.get(key);
if (!style) {
style = new Style({
stroke: stroke(colors.line, kind === "boundary"),
fill: new Fill({ color: kind === "water" ? colors.water : colors.surface }),
...(labeled
? {
text: new Text({
text: label,
font,
placement: kind === "road" ? "line" : "point",
fill: new Fill({ color: colors.muted }),
stroke: new Stroke({ color: colors.surface, width: lineWidth * 3 }),
}),
}
: {}),
});
siteStyles.set(key, style);
}
return style;
};
const annotationStyle = (label: string) => {
let style = annotationStyles.get(label);
if (!style) {
style = new Style({
image: new CircleStyle({
radius: pointRadius,
fill: new Fill({ color: colors.warning }),
stroke: stroke(colors.text),
}),
text: new Text({
text: label,
font,
offsetY: -pointRadius * 3,
fill: new Fill({ color: colors.text }),
stroke: new Stroke({ color: colors.surface, width: lineWidth * 3 }),
}),
});
annotationStyles.set(label, style);
}
return style;
};
const sources = Object.fromEntries(
layerIds.map((id) => [id, new VectorSource<Feature<Geometry>>({ wrapX: false })]),
) as Record<LayerId, VectorSource<Feature<Geometry>>>;
const clusters = new Cluster({
source: sources.entities,
distance: 40,
minDistance: 0,
wrapX: false,
});
const layerStyles: Record<LayerId, StyleLike> = {
entities: pointStyle,
coverage: coverageStyle,
uncertainty: uncertaintyStyle,
tracks: tracksStyle,
measurement: measurementStyle,
site: (feature) =>
siteStyle(
feature.get("kind") as string,
feature.get("label") as string,
view.getZoom()! >= 16,
),
annotations: (feature) => annotationStyle(feature.get("label") as string),
};
const layers = Object.fromEntries(
layerIds.map((id) => [
id,
new VectorLayer({
source: id === "entities" ? clusters : sources[id],
declutter: id === "site" || id === "annotations" ? id : false,
style: layerStyles[id],
}),
]),
) as Record<LayerId, VectorLayer>;
const tileLayer = new TileLayer({ zIndex: -1 });
const normalized = normalizeGeoView(initial.view);
const view = new View({
center: fromLonLat([...normalized.center]),
zoom: normalized.zoom,
rotation: normalized.bearing * radian,
minZoom: 2,
maxZoom: 20,
constrainResolution: false,
multiWorld: true,
});
const keyboardTarget = target.parentElement ?? target;
const keyboardCondition = (event: import("ol/MapBrowserEvent.js").default) =>
event.originalEvent.target === keyboardTarget;
const controls = interactions({
keyboard: false,
altShiftDragRotate: false,
pinchRotate: false,
zoomDuration: 0,
});
controls.extend([
new KeyboardPan({ condition: keyboardCondition, duration: 0 }),
new KeyboardZoom({ condition: keyboardCondition, duration: 0 }),
]);
const map = new Map({
target,
view,
layers: [tileLayer, ...layerIds.map((id) => layers[id])],
controls: [],
interactions: controls,
keyboardEventTarget: keyboardTarget,
});
const actualView = (): GeoView =>
normalizeGeoView({
center: publicPoint(view.getCenter() ?? [0, 0]),
zoom: view.getZoom() ?? 2,
bearing: view.getRotation() / radian,
});
const worldLongitude = () => {
const extent = view.getProjection().getExtent();
return ((view.getCenter()?.[0] ?? 0) * 360) / (extent[2]! - extent[0]!);
};
const project = (point: GeoPoint, center: number) =>
fromLonLat([unwrapLongitude(point[0], center), point[1]]);
const lineCoordinates = (points: readonly GeoPoint[], center: number): Coordinate[] => {
let previous = center;
return points.map((point) => {
const longitude = previous + normalizeLongitude(point[0] - previous);
previous = longitude;
return fromLonLat([longitude, point[1]]);
});
};
const polygon = (points: readonly GeoPoint[], center: number) => {
const ring = lineCoordinates(points, center);
ring.push([...ring[0]!]);
return new Polygon([ring]);
};
function emitFrame() {
pendingFrame = 0;
if (disposed) return;
const size = map.getSize();
if (!size || size[0]! <= 0 || size[1]! <= 0) return;
const inViewport = (pixel: Coordinate | null): pixel is Coordinate =>
!!pixel &&
pixel.every(Number.isFinite) &&
pixel[0]! >= 0 &&
pixel[1]! >= 0 &&
pixel[0]! <= size[0]! &&
pixel[1]! <= size[1]!;
const visibleIds: string[] = [];
let selectedPixel: readonly [number, number] | null = null;
for (const feature of sources.entities.getFeatures()) {
const coordinate = (feature.getGeometry() as Point).getCoordinates();
const pixel = map.getPixelFromCoordinate(coordinate);
if (!inViewport(pixel)) continue;
const id = feature.get("entityId") as string;
visibleIds.push(id);
if (
id === state.selectedId &&
layers.entities.getVisible() &&
layers.entities.getOpacity() > 0
)
selectedPixel = [pixel[0]!, pixel[1]!];
}
const groupIds = new Set<string>();
const groups =
layers.entities.getVisible() && layers.entities.getOpacity() > 0
? clusters.getFeatures().flatMap((feature) => {
const coordinate = (feature.getGeometry() as Point).getCoordinates();
const pixel = map.getPixelFromCoordinate(coordinate);
if (!inViewport(pixel)) return [];
const ids = (feature.get("features") as Feature[])
.map((child) => child.get("entityId") as string)
.sort();
let hash = 2166136261;
for (const character of JSON.stringify(ids)) {
hash ^= character.charCodeAt(0);
hash = Math.imul(hash, 16777619);
}
const baseId = `equipment:${ids.length}:${(hash >>> 0).toString(36)}`;
let id = baseId,
suffix = 0;
while (groupIds.has(id)) id = `${baseId}:${++suffix}`;
groupIds.add(id);
return [
{ id, ids, point: publicPoint(coordinate), pixel: [pixel[0]!, pixel[1]!] as const },
];
})
: [];
const center = view.getCenter(),
resolution = view.getResolution();
const metersPerPixel =
center && resolution
? getPointResolution(view.getProjection(), resolution, center, "m")
: null;
const frame = {
view: actualView(),
visibleIds: visibleIds.sort(),
groups,
selectedPixel,
metersPerPixel,
};
if (!sameGeoFrame(lastFrame, frame)) {
lastFrame = frame;
callbacks.onFrame(frame);
}
}
const scheduleFrame = () => {
if (!disposed && !pendingFrame) pendingFrame = requestAnimationFrame(emitFrame);
};
function updateVectors(data: FeatureData) {
// Reproject at the current longitude so dateline neighbors remain adjacent.
const center = worldLongitude();
for (const source of Object.values(sources)) source.clear(true);
siteStyles.clear();
annotationStyles.clear();
const batches = Object.fromEntries(
layerIds.map((id) => [id, [] as Feature<Geometry>[]]),
) as Record<LayerId, Feature<Geometry>[]>;
for (const spec of data.specs) {
const geometry =
spec.shape === "point"
? new Point(project(spec.points[0]!, center))
: spec.shape === "line"
? new LineString(lineCoordinates(spec.points, center))
: polygon(spec.points, center);
batches[spec.layer].push(new Feature({ geometry, ...spec.properties }));
}
for (const id of layerIds) sources[id].addFeatures(batches[id]);
}
function updateTiles() {
const next = JSON.stringify(state.tileSource ?? null);
if (next === tileKey) return;
tileKey = next;
unByKey(tileKeys.splice(0));
tileLayer.getSource()?.dispose();
tileLayer.setSource(null);
tileFailed = false;
tileLoads = 0;
if (!state.tileSource) return;
try {
const url = new URL(state.tileSource.url, window.location.href);
if (!["http:", "https:"].includes(url.protocol) || !state.tileSource.attribution.trim())
throw new Error("Invalid tile source");
const source = new XYZ({ url: state.tileSource.url, crossOrigin: "anonymous", wrapX: true });
tileKeys.push(
source.on("tileloadstart", () => {
if (!disposed) {
tileLoads++;
if (!tileFailed) callbacks.onTileState("loading");
}
}),
source.on("tileloadend", () => {
if (!disposed) {
tileLoads = Math.max(0, tileLoads - 1);
if (!tileFailed && tileLoads === 0) callbacks.onTileState("ready");
}
}),
source.on("tileloaderror", () => {
if (!disposed) {
tileLoads = Math.max(0, tileLoads - 1);
tileFailed = true;
callbacks.onTileState("error");
}
}),
);
tileLayer.setSource(source);
callbacks.onTileState("loading");
} catch {
callbacks.onTileState("error");
}
}
function update(next: EngineState, nextCallbacks: EngineCallbacks) {
if (disposed) return;
state = next;
callbacks = nextCallbacks;
// The new callbacks have not been given a frame yet. One that the previous callbacks were
// refused (GeoMap ignores a callback superseded by this update) is delivered again.
lastFrame = null;
const requested = normalizeGeoView(state.view);
if (!sameView(actualView(), requested)) {
view.cancelAnimations();
view.setCenter(project(requested.center, requested.center[0]));
view.setZoom(requested.zoom);
view.setRotation(requested.bearing * radian);
}
// Features are redrawn when their inputs change, or when the view center crosses the seam at
// which one of them is drawn on another copy of the world. A pan inside a seam changes neither.
const redraw = features.sync(state, worldLongitude());
if (redraw) updateVectors(redraw);
for (const id of layerIds) {
const index = state.layers.findIndex((layer) => layer.id === id),
supplied = state.layers[index];
const validOpacity =
supplied &&
Number.isFinite(supplied.opacity) &&
supplied.opacity >= 0 &&
supplied.opacity <= 1;
layers[id].setVisible(!!supplied?.visible && !!validOpacity);
layers[id].setOpacity(validOpacity ? supplied.opacity : 0);
layers[id].setZIndex(index < 0 ? 0 : state.layers.length - index);
}
updateTiles();
map.updateSize();
map.render();
scheduleFrame();
}
keys.push(
map.on("postrender", scheduleFrame),
map.on("moveend", () => {
if (disposed) return;
const next = actualView();
if (!sameView(next, normalizeGeoView(state.view))) callbacks.onViewChange(next);
scheduleFrame();
}),
map.on("singleclick", (event) => {
if (disposed || state.mode === "inspect") return;
const point = publicPoint(event.coordinate);
if (isGeoPoint(point)) callbacks.onPoint(point);
}),
);
const observer = new ResizeObserver(() => {
if (!disposed) {
map.updateSize();
scheduleFrame();
}
});
observer.observe(target);
const dispose = () => {
if (disposed) return;
disposed = true;
observer.disconnect();
if (pendingFrame) cancelAnimationFrame(pendingFrame);
unByKey(keys);
unByKey(tileKeys);
clusters.setSource(null);
map.setTarget(undefined);
map.dispose();
clusters.dispose();
tileLayer.getSource()?.dispose();
tileLayer.dispose();
for (const id of layerIds) {
sources[id].dispose();
layers[id].dispose();
}
};
try {
update(initial, initialCallbacks);
} catch (error) {
dispose();
throw error;
}
return { update, dispose };
}
patterns/geospatial-workspace/feature-data.ts
import type { EngineState } from "./engine-contract";
import { getUncertaintyFootprint, isGeoPoint, normalizeLongitude } from "./geometry";
import type { GeoPoint } from "./types";
/** What the map draws and from where. Pure data: no OpenLayers, so it is unit-testable. */
export type FeatureLayer =
| "site"
| "coverage"
| "uncertainty"
| "tracks"
| "entities"
| "measurement"
| "annotations";
export interface FeatureSpec {
layer: FeatureLayer;
shape: "point" | "line" | "polygon";
/** A point has one position. A line or polygon ring is unwrapped from its first vertex. */
points: readonly GeoPoint[];
properties?: Readonly<Record<string, unknown>>;
}
export interface FeatureData {
/** In draw order: entities by ID, then site, annotations and measurement. */
specs: readonly FeatureSpec[];
/** The longitude each spec is wrapped from, one per spec. */
anchors: Float64Array;
}
type FeatureInputs = Pick<EngineState, "snapshot" | "entities" | "annotations" | "measurement">;
const compareIds = new Intl.Collator().compare;
/** The copy of a longitude that is nearest the view center, so shapes stay adjacent across ±180°. */
export const unwrapLongitude = (longitude: number, center: number) =>
center + normalizeLongitude(longitude - center);
/**
* How many whole turns separate a longitude from its nearest copy to the center. It is an integer
* that never decreases as the center moves east, and changes at exactly the center where
* {@link unwrapLongitude} switches to another copy (it uses the same arithmetic).
*/
const turns = (longitude: number, center: number) =>
Math.round((unwrapLongitude(longitude, center) - longitude) / 360);
/**
* Sums {@link turns} over every anchor. Each term only grows as the center moves east, so the sum
* is the same for two centers exactly when no feature is drawn on another copy of the world. A
* pan inside one seam leaves it alone; crossing a feature's seam changes it.
*/
export function seamSignature(anchors: Float64Array, center: number): number {
let sum = 0;
for (let index = 0; index < anchors.length; index++) sum += turns(anchors[index]!, center);
return sum;
}
/** Everything the supplied inputs draw, in the order the previous renderer added it. */
export function buildFeatureData(input: FeatureInputs): FeatureData {
const specs: FeatureSpec[] = [];
const entities = [...input.entities].sort((a, b) => compareIds(a.record.id, b.record.id));
for (const entity of entities) {
if (isGeoPoint(entity.position)) {
specs.push({
layer: "entities",
shape: "point",
points: [entity.position],
properties: { entityId: entity.record.id },
});
if (entity.uncertaintyMeters !== undefined) {
const footprint = getUncertaintyFootprint(entity.position, entity.uncertaintyMeters);
if (footprint?.length)
specs.push({ layer: "uncertainty", shape: "polygon", points: footprint });
}
}
if (entity.coverage && entity.coverage.length >= 3 && entity.coverage.every(isGeoPoint))
specs.push({ layer: "coverage", shape: "polygon", points: entity.coverage });
if (
entity.track &&
entity.track.length >= 2 &&
entity.track.every((sample) => isGeoPoint(sample.position))
)
specs.push({
layer: "tracks",
shape: "line",
points: entity.track.map((sample) => sample.position),
});
}
for (const feature of input.snapshot.site) {
if (
!feature.points.every(isGeoPoint) ||
feature.points.length < (feature.kind === "road" ? 2 : 3)
)
continue;
specs.push({
layer: "site",
shape: feature.kind === "road" ? "line" : "polygon",
points: feature.points,
properties: { kind: feature.kind, label: feature.label },
});
}
for (const annotation of input.annotations)
if (annotation.sourceId === input.snapshot.id && isGeoPoint(annotation.position))
specs.push({
layer: "annotations",
shape: "point",
points: [annotation.position],
properties: { label: annotation.label },
});
if (input.measurement.length && input.measurement.every(isGeoPoint)) {
for (const point of input.measurement)
specs.push({ layer: "measurement", shape: "point", points: [point] });
if (input.measurement.length >= 2)
specs.push({ layer: "measurement", shape: "line", points: input.measurement });
}
const anchors = new Float64Array(specs.length);
specs.forEach((spec, index) => {
anchors[index] = spec.points[0]![0];
});
return { specs, anchors };
}
/**
* Decides when the drawn features are out of date. The inputs are compared by identity (a host
* that changes a collection supplies a new one), the view only through {@link seamSignature}. It
* answers with the data to draw, or null when the features on the map are still right.
*/
export function createFeatureTracker() {
let inputs: FeatureInputs | null = null;
let data: FeatureData | null = null;
let signature = NaN;
return {
sync(next: FeatureInputs, center: number): FeatureData | null {
const sameInputs =
inputs !== null &&
data !== null &&
inputs.snapshot.id === next.snapshot.id &&
inputs.snapshot.revision === next.snapshot.revision &&
inputs.snapshot.site === next.snapshot.site &&
inputs.entities === next.entities &&
inputs.annotations === next.annotations &&
inputs.measurement === next.measurement;
if (!sameInputs || data === null) {
data = buildFeatureData(next);
inputs = {
snapshot: next.snapshot,
entities: next.entities,
annotations: next.annotations,
measurement: next.measurement,
};
signature = seamSignature(data.anchors, center);
return data;
}
const seams = seamSignature(data.anchors, center);
if (seams === signature) return null;
signature = seams;
return data;
},
};
}
patterns/geospatial-workspace/report-results.tsx
"use client";
import { memo, useMemo, useState } from "react";
import { Badge, Button, DataTable, type DataTableColumn } from "@operator-ds/react";
import { formatGeoPosition } from "./workspace-state";
import type { GeoEntity } from "./types";
/** How many reports are in the table at once. A page of this size re-renders in a frame. */
export const REPORT_PAGE_SIZE = 25;
const rowId = (row: Record<string, unknown>) => String(row.id);
interface ReportResultsProps {
/** The reports to list. Keep it the same array until the list itself changes. */
entities: readonly GeoEntity[];
/** Stable: the table does not draw again for a new function with the same job. */
onInspect: (id: string) => void;
/** A new value returns the table to its first page, as a change of filter does. */
resetKey: string;
}
/**
* The report table, one page at a time. It is its own memoized component so that a map frame,
* which re-renders the workspace around it about every animation frame, costs it nothing.
*/
export const ReportResults = memo(function ReportResults({
entities,
onInspect,
resetKey,
}: ReportResultsProps) {
const [requested, setRequested] = useState({ resetKey, page: 1 });
const pageCount = Math.max(1, Math.ceil(entities.length / REPORT_PAGE_SIZE));
const page = Math.min(requested.resetKey === resetKey ? requested.page : 1, pageCount);
const columns = useMemo<DataTableColumn[]>(
() => [
{ key: "name", label: "Reports" },
{ key: "id", label: "ID", as: "code" },
{
key: "condition",
label: "Condition",
render: (_value, row) => {
const condition = (row.entity as GeoEntity).record.condition;
return condition ? (
<Badge appearance="text" indicator="none" variant={condition.variant ?? "neutral"}>
{condition.label}
</Badge>
) : (
"Not supplied"
);
},
},
{
key: "quality",
label: "Data quality",
render: (_value, row) => (
<Badge appearance="text" indicator="none">
{(row.entity as GeoEntity).record.quality.state ?? "unknown"}
</Badge>
),
},
{
key: "position",
label: "Position",
render: (_value, row) => {
const entity = row.entity as GeoEntity;
return (
<div className="flex min-w-0 flex-col gap-1u">
<span>{entity.positionState}</span>
<span className="font-mono [overflow-wrap:anywhere]">
{formatGeoPosition(entity.position)}
</span>
</div>
);
},
},
{
key: "inspect",
label: "Details",
render: (_value, row) => (
<Button
size="sm"
variant="tertiary"
aria-label={`Inspect ${row.name}`}
onClick={() => onInspect(String(row.id))}
>
Inspect
</Button>
),
},
],
[onInspect],
);
const first = (page - 1) * REPORT_PAGE_SIZE;
const rows = useMemo(
() =>
entities.slice(first, first + REPORT_PAGE_SIZE).map((entity) => ({
id: entity.record.id,
name: entity.record.name,
entity,
})),
[entities, first],
);
const move = (next: number) => {
if (next >= 1 && next <= pageCount) setRequested({ resetKey, page: next });
};
// A button that has just taken the reader to the first or last page stays in place and says it
// is unavailable (aria-disabled), so keyboard focus is not dropped to the page.
const pagerButton = (label: string, target: number, unavailable: boolean) => (
<Button
size="sm"
variant="tertiary"
aria-disabled={unavailable || undefined}
data-disabled={unavailable ? "true" : undefined}
onClick={() => move(target)}
>
{label}
</Button>
);
return (
<>
<div className="min-w-0 overflow-x-auto">
<DataTable
className="min-w-[64rem]"
columns={columns}
data={rows}
getRowId={rowId}
caption="Supplied reports and geographic positions"
{...(pageCount > 1 ? { rowIndexOffset: first, totalRowCount: entities.length } : {})}
/>
</div>
{pageCount > 1 && (
<div role="group" aria-label="Report pages" className="flex flex-wrap items-center gap-2u">
{pagerButton("Previous page", page - 1, page <= 1)}
<span className="font-mono tabular-nums" role="status">
Reports {first + 1}–{Math.min(first + REPORT_PAGE_SIZE, entities.length)} of{" "}
{entities.length}
</span>
{pagerButton("Next page", page + 1, page >= pageCount)}
</div>
)}
</>
);
});
patterns/geospatial-workspace/workspace-state.ts
import type { LayerControlItem } from "@operator-ds/react";
import type {
GeoAnnotation,
GeoAnnotationDraft,
GeoAnnotationResult,
GeoBookmark,
GeoEntity,
GeoView,
} from "./types";
import { isGeoPoint } from "./geometry";
export const defaultGeoLayers: readonly LayerControlItem[] = Object.freeze(
[
{ id: "annotations", label: "Annotations", visible: true, opacity: 1 },
{ id: "measurement", label: "Measurement", visible: true, opacity: 1 },
{ id: "entities", label: "Equipment", visible: true, opacity: 1 },
{ id: "tracks", label: "Reported tracks", visible: true, opacity: 0.8 },
{ id: "uncertainty", label: "Position uncertainty", visible: true, opacity: 0.35 },
{ id: "coverage", label: "Supplied coverage", visible: true, opacity: 0.3 },
{ id: "site", label: "Site plan", visible: true, opacity: 0.7 },
].map((layer) => Object.freeze(layer)),
);
export type WorkspaceResult<T> = { ok: true; value: T } | { ok: false; error: string };
function object(value: unknown): value is Record<string, unknown> {
return value !== null && typeof value === "object" && !Array.isArray(value);
}
function exact(
value: Record<string, unknown>,
fields: readonly string[],
optional: readonly string[] = [],
): boolean {
return (
fields.every((field) => Object.hasOwn(value, field)) &&
Reflect.ownKeys(value).every(
(key) => typeof key === "string" && (fields.includes(key) || optional.includes(key)),
)
);
}
function text(value: unknown, max = 256): value is string {
return (
typeof value === "string" &&
value.trim().length > 0 &&
value.length <= max &&
!Array.from(value).some(
(character) => character.charCodeAt(0) < 32 || character.charCodeAt(0) === 127,
)
);
}
function instant(value: unknown): value is string {
if (
typeof value !== "string" ||
!/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d{1,3})?(?:Z|[+-]\d{2}:\d{2})$/.test(value) ||
!Number.isFinite(Date.parse(value))
)
return false;
const date = new Date(`${value.slice(0, 10)}T00:00:00Z`);
return date.toISOString().slice(0, 10) === value.slice(0, 10);
}
const fail = (error: string): { ok: false; error: string } => ({ ok: false, error });
const layerIds = defaultGeoLayers.map((layer) => layer.id);
/** Invalid geography stays in the table; ambiguous source identity blocks interaction. */
export function getGeoSnapshotError(value: unknown): string | null {
try {
if (
!object(value) ||
!text(value.id) ||
!text(value.revision) ||
!text(value.source) ||
typeof value.availability !== "string" ||
!["current", "partial", "offline", "unavailable"].includes(value.availability) ||
!Array.isArray(value.entities) ||
value.entities.length > 5000 ||
!Array.isArray(value.site)
)
return "The supplied geographic snapshot is malformed or exceeds 5,000 equipment records.";
const ids = new Set<string>();
for (const item of value.entities) {
if (
!object(item) ||
!object(item.record) ||
!text(item.record.id) ||
!text(item.record.name) ||
!Array.isArray(item.record.facts) ||
!object(item.record.quality)
)
return "Every equipment record needs a readable unique identity and complete preview content.";
if (ids.has(item.record.id))
return "Equipment IDs must be unique. Ambiguous records cannot be selected.";
ids.add(item.record.id);
}
return null;
} catch {
return "The supplied geographic snapshot could not be read.";
}
}
export function isValidGeoView(value: unknown): value is GeoView {
return (
object(value) &&
exact(value, ["center", "zoom", "bearing"]) &&
isGeoPoint(value.center) &&
typeof value.zoom === "number" &&
Number.isFinite(value.zoom) &&
value.zoom >= 2 &&
value.zoom <= 20 &&
typeof value.bearing === "number" &&
Number.isFinite(value.bearing) &&
value.bearing >= 0 &&
value.bearing < 360
);
}
/** The IDs a map frame may mention: the entities that have a plottable position. */
export function geoKnownIds(entities: readonly GeoEntity[]): ReadonlySet<string> {
return new Set(
entities.filter((entity) => isGeoPoint(entity.position)).map((entity) => entity.record.id),
);
}
/**
* `known` may be supplied when the caller keeps it between frames; it must be geoKnownIds of the
* same entities, which are then only counted.
*/
export function getGeoFrameError(
value: unknown,
entities: readonly GeoEntity[],
known: ReadonlySet<string> = geoKnownIds(entities),
): string | null {
try {
if (
!object(value) ||
!isValidGeoView(value.view) ||
!Array.isArray(value.visibleIds) ||
!Array.isArray(value.groups)
)
return "The renderer returned an invalid map frame.";
const validIds = (ids: unknown): ids is string[] =>
Array.isArray(ids) &&
ids.length <= entities.length &&
ids.every((id) => typeof id === "string" && known.has(id)) &&
new Set(ids).size === ids.length;
const pixel = (point: unknown) =>
Array.isArray(point) &&
point.length === 2 &&
point.every((axis) => typeof axis === "number" && Number.isFinite(axis));
if (
!validIds(value.visibleIds) ||
(value.selectedPixel !== null && !pixel(value.selectedPixel)) ||
(value.metersPerPixel !== null &&
(typeof value.metersPerPixel !== "number" ||
!Number.isFinite(value.metersPerPixel) ||
value.metersPerPixel <= 0))
)
return "Map extent or scale is unavailable because the renderer returned invalid coordinates or identities.";
const groupIds = new Set<string>();
for (const group of value.groups) {
if (
!object(group) ||
!text(group.id) ||
groupIds.has(group.id) ||
!validIds(group.ids) ||
group.ids.length === 0 ||
!isGeoPoint(group.point) ||
!pixel(group.pixel)
)
return "Map groups contain invalid or ambiguous equipment identities.";
groupIds.add(group.id);
}
return null;
} catch {
return "The map frame could not be read.";
}
}
export function filterGeoEntities(entities: readonly GeoEntity[], query: string): GeoEntity[] {
const term = query.trim().toLowerCase();
return entities.filter(({ record }) =>
`${record.id} ${record.name} ${record.typeLabel ?? ""}`.toLowerCase().includes(term),
);
}
export function retainGeoEntity(entity: GeoEntity): GeoEntity {
return Object.freeze({
...entity,
record: Object.freeze({
...entity.record,
quality: Object.freeze({ ...entity.record.quality }),
facts: Object.freeze(entity.record.facts.map((fact) => Object.freeze({ ...fact }))),
...(entity.record.condition
? { condition: Object.freeze({ ...entity.record.condition }) }
: {}),
}),
position: entity.position
? (Object.freeze([...entity.position]) as typeof entity.position)
: null,
...(entity.coverage
? {
coverage: Object.freeze(
entity.coverage.map((point) => Object.freeze([...point]) as typeof point),
),
}
: {}),
...(entity.track
? {
track: Object.freeze(
entity.track.map((sample) =>
Object.freeze({
...sample,
position: Object.freeze([...sample.position]) as typeof sample.position,
}),
),
),
}
: {}),
});
}
export function retainedEntityPreview(entity: GeoEntity, missing: boolean) {
return missing
? {
...entity.record,
quality: {
...entity.record.quality,
state: "unavailable" as const,
detail: "Removed from the current snapshot; showing the retained last-known report.",
},
}
: entity.record;
}
export function formatGeoPosition(position: unknown): string {
if (position === null) return "Position unknown";
if (!isGeoPoint(position)) return "Position invalid or outside the supported map latitude range";
return `${position[1].toFixed(6)}°, ${position[0].toFixed(6)}° (latitude, longitude)`;
}
export function parseGeoBookmark(value: unknown): WorkspaceResult<GeoBookmark> {
try {
if (
!object(value) ||
!exact(value, ["id", "name", "view", "layers"]) ||
!text(value.id) ||
!text(value.name, 80) ||
!isValidGeoView(value.view) ||
!Array.isArray(value.layers) ||
value.layers.length !== layerIds.length
)
return fail("Bookmark name, view or complete layer preferences are invalid.");
const ids = new Set<string>();
for (const layer of value.layers) {
if (
!object(layer) ||
!exact(layer, ["id", "label", "visible", "opacity"], ["description", "disabled"]) ||
typeof layer.id !== "string" ||
!layerIds.includes(layer.id) ||
ids.has(layer.id) ||
!text(layer.label, 120) ||
typeof layer.visible !== "boolean" ||
typeof layer.opacity !== "number" ||
!Number.isFinite(layer.opacity) ||
layer.opacity < 0 ||
layer.opacity > 1 ||
(layer.disabled !== undefined && typeof layer.disabled !== "boolean") ||
(layer.description !== undefined && !text(layer.description, 512))
)
return fail(
"Bookmark layers must contain each supported identity once, with valid visibility and opacity.",
);
ids.add(layer.id);
}
const bookmark = value as unknown as GeoBookmark;
return {
ok: true,
value: Object.freeze({
id: bookmark.id,
name: bookmark.name,
view: Object.freeze({
...bookmark.view,
center: Object.freeze([...bookmark.view.center]) as typeof bookmark.view.center,
}),
layers: Object.freeze(bookmark.layers.map((layer) => Object.freeze({ ...layer }))),
}),
};
} catch {
return fail("The bookmark could not be read.");
}
}
export function getAnnotationDraftError(value: unknown): string | null {
return object(value) &&
exact(value, ["label", "position", "sourceId"]) &&
text(value.label, 120) &&
text(value.sourceId) &&
isGeoPoint(value.position)
? null
: "Enter a label of 1–120 characters and a valid location within ±85.05112878° latitude and ±180° longitude.";
}
export function parseGeoAnnotationResult(
value: unknown,
draft: GeoAnnotationDraft,
existing: readonly GeoAnnotation[],
): WorkspaceResult<GeoAnnotationResult> {
try {
if (!object(value))
return fail("The annotation service returned an invalid outcome. The draft is retained.");
if (
value.status === "failed" &&
exact(value, ["status", "message"]) &&
text(value.message, 2000)
)
return { ok: true, value: { status: "failed", message: value.message } };
const annotation = value.annotation;
if (
value.status !== "saved" ||
!exact(value, ["status", "annotation"]) ||
!object(annotation) ||
!exact(annotation, ["id", "label", "position", "sourceId", "createdAt"]) ||
!text(annotation.id) ||
existing.some((item) => item.id === annotation.id) ||
annotation.label !== draft.label ||
annotation.sourceId !== draft.sourceId ||
!isGeoPoint(annotation.position) ||
annotation.position[0] !== draft.position[0] ||
annotation.position[1] !== draft.position[1] ||
!instant(annotation.createdAt)
)
return fail("The saved annotation did not match the submitted draft. The draft is retained.");
return {
ok: true,
value: Object.freeze({
status: "saved",
annotation: Object.freeze({
id: annotation.id,
label: draft.label,
sourceId: draft.sourceId,
position: Object.freeze([...draft.position]) as typeof draft.position,
createdAt: annotation.createdAt,
}),
}),
};
} catch {
return fail("The annotation outcome could not be read. The draft is retained.");
}
}
patterns/geospatial-workspace/demo.tsx
"use client";
import { useEffect, useRef, useState } from "react";
import { Button, Checkbox, Field, Select, SelectOption } from "@operator-ds/react";
import type { OperationalDomain } from "../operational-domain";
import { militaryGeoSnapshot } from "./military-fixture";
import { GeospatialWorkspace } from "./geospatial-workspace";
import { fixtureObservedAt, initialGeoLayers, initialGeoView, utilitySnapshot } from "./fixtures";
import type {
GeoAnnotation,
GeoAnnotationDraft,
GeoAnnotationResult,
GeoBookmark,
GeoSnapshot,
} from "./types";
/** Camp Meridian base-support reports with local annotations and bookmarks. */
export function OperationsMapDemo() {
return <GeospatialScenario domain="military" />;
}
/** Internal compatibility host for the industrial regression fixture. */
export function GeospatialWorkspaceDemo({
initialDomain = "military",
}: { initialDomain?: OperationalDomain } = {}) {
return <GeospatialScenario key={initialDomain} domain={initialDomain} />;
}
function GeospatialScenario({ domain }: { domain: OperationalDomain }) {
const initialSnapshot = domain === "military" ? militaryGeoSnapshot : utilitySnapshot;
const [snapshot, setSnapshot] = useState<GeoSnapshot>(initialSnapshot);
const [selectedId, setSelectedId] = useState<string | null>(
initialSnapshot.entities[6]!.record.id,
);
const [annotations, setAnnotations] = useState<readonly GeoAnnotation[]>([]);
const [bookmarks, setBookmarks] = useState<readonly GeoBookmark[]>([
{
id: "site-overview",
name: domain === "military" ? "Camp overview" : "Utility district",
view: initialGeoView,
layers: initialGeoLayers,
},
]);
const [rejectAnnotation, setRejectAnnotation] = useState(false);
const [allowAnnotations, setAllowAnnotations] = useState(true);
const [missingTiles, setMissingTiles] = useState(false);
const [notice, setNotice] = useState("");
const sequence = useRef(1);
const mounted = useRef(true);
useEffect(() => {
mounted.current = true;
return () => {
mounted.current = false;
};
}, []);
const current = useRef({ snapshot, rejectAnnotation, allowAnnotations });
current.current = { snapshot, rejectAnnotation, allowAnnotations };
async function createAnnotation(draft: GeoAnnotationDraft): Promise<GeoAnnotationResult> {
const requestedSource = current.current.snapshot;
await Promise.resolve();
if (!mounted.current)
return { status: "failed", message: "The annotation host is no longer available." };
const state = current.current;
if (
state.snapshot.id !== requestedSource.id ||
state.snapshot.revision !== requestedSource.revision
)
return {
status: "failed",
message: "The reports changed while saving. Review the retained draft and try again.",
};
if (draft.sourceId !== state.snapshot.id)
return {
status: "failed",
message: "The source changed. Review the annotation against the current source.",
};
if (!state.allowAnnotations)
return { status: "failed", message: "Annotation changes are unavailable for this session." };
if (state.rejectAnnotation)
return {
status: "failed",
message:
"The simulated source rejected the annotation. Your draft is retained; clear Reject annotation in Simulation controls and try again.",
};
const annotation: GeoAnnotation = {
...draft,
id: `note-${++sequence.current}`,
createdAt: fixtureObservedAt,
};
setAnnotations((items) => [...items, annotation]);
return { status: "saved", annotation };
}
return (
<div className="not-prose flex min-w-0 flex-col gap-3u" data-testid="operations-map-demo">
<GeospatialWorkspace
snapshot={snapshot}
selectedId={selectedId}
onSelectedIdChange={setSelectedId}
annotations={annotations}
{...(allowAnnotations
? {
onCreateAnnotation: createAnnotation,
onRemoveAnnotation: (id: string) =>
setAnnotations((items) => items.filter((item) => item.id !== id)),
}
: {})}
bookmarks={bookmarks}
onBookmarksChange={setBookmarks}
initialView={initialGeoView}
{...(missingTiles
? {
tileSource: {
url: "/geospatial-missing/{z}/{x}/{y}.png",
attribution: "Local missing-tile fixture",
},
}
: {})}
/>
<details className="border-t border-oprt-border pt-2u text-oprt-text-dim">
<summary className="min-h-[var(--oprt-height-sm)] cursor-pointer py-1u text-oprt-base font-medium focus-visible:outline focus-visible:outline-2 focus-visible:outline-oprt-border-focus">
Simulation controls
</summary>
<div className="pt-2u">
<div className="flex min-w-0 flex-wrap items-end gap-2u">
<Field label="Source availability">
<Select
value={snapshot.availability}
onValueChange={(value) =>
setSnapshot((currentSnapshot) => ({
...currentSnapshot,
revision: `snapshot-${++sequence.current}`,
availability: value as GeoSnapshot["availability"],
detail:
value === "current"
? "Complete supplied report collection."
: value === "partial"
? "The western sector report is incomplete; some records may be missing."
: value === "offline"
? "Offline snapshot retained from 12:00 UTC; no current source connection."
: "The source is unavailable; retained exercise records are shown.",
}))
}
>
<SelectOption value="current">Current</SelectOption>
<SelectOption value="partial">Partial report</SelectOption>
<SelectOption value="offline">Offline snapshot</SelectOption>
<SelectOption value="unavailable">Unavailable source</SelectOption>
</Select>
</Field>
<Field label="Allow annotations">
<Checkbox
checked={allowAnnotations}
onCheckedChange={(value) => setAllowAnnotations(value === true)}
/>
</Field>
<Field label="Reject annotation">
<Checkbox
checked={rejectAnnotation}
onCheckedChange={(value) => setRejectAnnotation(value === true)}
/>
</Field>
<Field label="Missing tiles">
<Checkbox
checked={missingTiles}
onCheckedChange={(value) => setMissingTiles(value === true)}
/>
</Field>
<Button
size="sm"
variant="tertiary"
disabled={
!selectedId || !snapshot.entities.some((item) => item.record.id === selectedId)
}
onClick={() => {
setSnapshot((value) => ({
...value,
revision: `snapshot-${++sequence.current}`,
entities: value.entities.filter((item) => item.record.id !== selectedId),
}));
setNotice(
"The selected report was removed from the supplied snapshot. Its identity remains selected.",
);
}}
>
Remove selected report
</Button>
<Button
size="sm"
variant="tertiary"
onClick={() => {
setSnapshot({ ...initialSnapshot, revision: `snapshot-${++sequence.current}` });
setNotice("The supplied reports were restored.");
}}
>
Restore reports
</Button>
</div>
</div>
</details>
<p role="status" className="m-0 text-oprt-base text-oprt-text-dim">
{notice}
</p>
</div>
);
}
patterns/geospatial-workspace/military-fixture.ts
import { utilityEntities, utilitySite, fixtureObservedAt } from "./fixtures";
import type { GeoSnapshot } from "./types";
const records = [
[
"RELAY-01",
"Relay team Alpha",
"Communications",
"Available",
"success",
"North relay",
"Signals section",
"Primary relay established. Battery change scheduled for 12:30 UTC.",
],
[
"GEN-01",
"Relay generator 01",
"Power",
"Inspection due",
"warning",
"North relay",
"Support section",
"Fuel-system inspection due before the next service window.",
],
[
"TEAM-02",
"Survey team Bravo",
"Personnel",
"On station",
"success",
"East service road",
"Engineering section",
"Site survey in progress. Two personnel reported at the east service road.",
],
[
"TEAM-03",
"Survey team Charlie",
"Personnel",
"On station",
"success",
"East service road",
"Engineering section",
"Cable-route survey in progress alongside team Bravo.",
],
[
"CP-01",
"Logistics command post",
"Command post",
"Available",
"success",
"Operations compound",
"Base support",
"Vehicle dispatch and equipment coordination for the current exercise.",
],
[
"OBS-03",
"Gate observation post",
"Observation",
"Available",
"success",
"South access",
"Base support",
"Reported observation sector covers the southern access route.",
],
[
"TRUCK-07",
"Support vehicle 07",
"Ground vehicle",
"Last-known available",
"neutral",
"South service road",
"Transport section",
"Last reported at 11:42 UTC. Current movement has not been confirmed.",
],
[
"RADIO-04",
"Reserve radio kit 04",
"Communications",
"Condition not reported",
"neutral",
"Unassigned",
"Signals section",
"Held in the equipment register; a geographic position has not been reported.",
],
[
"RELAY-09",
"Remote relay team",
"Communications",
"Inspection due",
"warning",
"Eastern relay site",
"Signals section",
"Remote site outside the initial view. Equipment inspection is due at 13:00 UTC.",
],
] as const;
/** Fictional base-support exercise; positions are local fixture geometry. */
export const militaryGeoSnapshot: GeoSnapshot = {
id: "camp-meridian-support",
title: "Camp Meridian · base support",
revision: "exercise-12",
source: "Fictional exercise · Base support network",
observedAt: fixtureObservedAt,
availability: "current",
entities: utilityEntities.map((entity, i) => {
const [id, name, typeLabel, label, variant, area, owner, summary] = records[i]!;
return {
...entity,
record: {
...entity.record,
id,
name,
typeLabel,
summary,
condition: { label, variant },
quality: {
...entity.record.quality,
source: "Exercise Meridian / base support",
detail:
i === 6
? "Last report 11:42 UTC. Reported position uncertainty: 65 m."
: entity.position === null
? "Listed in the 12:00 UTC register. A position has not been reported."
: "Reported in the 12:00 UTC exercise snapshot.",
},
facts: [
{ id: "area", label: "Area", value: area },
{ id: "owner", label: "Assigned to", value: owner },
{ id: "reference", label: "Reference", value: id, mono: true },
],
},
};
}),
site: utilitySite.map((site) => ({
...site,
label:
(
{
"site-boundary": "Camp Meridian",
"pump-house": "North relay",
"control-room": "Gate post",
workshop: "Vehicle workshop",
"power-house": "Operations",
stores: "Supply store",
"treatment-a": "Training compound A",
"treatment-b": "Training compound B",
} as Record<string, string>
)[site.id] ?? site.label,
})),
};
patterns/geospatial-workspace/fixtures.ts
import type { LayerControlItem } from "@operator-ds/react";
import type { GeoEntity, GeoPoint, GeoSiteFeature, GeoSnapshot, GeoView } from "./types";
export const initialGeoView: GeoView = { center: [-122.3, 37.8], zoom: 16, bearing: 0 };
export const initialGeoLayers: readonly LayerControlItem[] = [
{ id: "annotations", label: "Annotations", visible: true, opacity: 1 },
{ id: "measurement", label: "Measurement", visible: true, opacity: 1 },
{ id: "entities", label: "Equipment", visible: true, opacity: 1 },
{ id: "uncertainty", label: "Position uncertainty", visible: true, opacity: 0.65 },
{ id: "tracks", label: "Last-known tracks", visible: true, opacity: 0.8 },
{ id: "coverage", label: "Reported coverage", visible: true, opacity: 0.4 },
{ id: "site", label: "Local site plan", visible: true, opacity: 1 },
];
export const fixtureObservedAt = "2026-09-30T12:00:00Z";
const point = (x: number, y: number): GeoPoint => [-122.3 + x, 37.8 + y];
function rectangle(x: number, y: number, width: number, height: number): readonly GeoPoint[] {
return [
point(x, y),
point(x + width, y),
point(x + width, y + height),
point(x, y + height),
point(x, y),
];
}
const buildings: GeoSiteFeature[] = [
{
id: "pump-house",
label: "Pump house",
kind: "building",
points: rectangle(-0.0021, 0.00025, 0.0006, 0.0005),
},
{
id: "control-room",
label: "Control room",
kind: "building",
points: rectangle(-0.0009, -0.0008, 0.0006, 0.0004),
},
{
id: "workshop",
label: "Workshop",
kind: "building",
points: rectangle(0.0008, -0.00075, 0.001, 0.00045),
},
{
id: "power-house",
label: "Power house",
kind: "building",
points: rectangle(0.0011, 0.0008, 0.0008, 0.00045),
},
{
id: "stores",
label: "Stores",
kind: "building",
points: rectangle(-0.0008, 0.0007, 0.0008, 0.00035),
},
{
id: "treatment-a",
label: "Treatment A",
kind: "building",
points: rectangle(-0.002, -0.0012, 0.0006, 0.0006),
},
{
id: "treatment-b",
label: "Treatment B",
kind: "building",
points: rectangle(-0.002, -0.002, 0.0006, 0.0006),
},
{
id: "tank-a",
label: "Storage A",
kind: "building",
points: rectangle(0.0008, 0.00165, 0.0004, 0.0004),
},
{
id: "tank-b",
label: "Storage B",
kind: "building",
points: rectangle(0.0014, 0.00165, 0.0004, 0.0004),
},
];
export const utilitySite: readonly GeoSiteFeature[] = [
{
id: "site-boundary",
label: "Utility district",
kind: "boundary",
points: rectangle(-0.003, -0.0027, 0.006, 0.0055),
},
{
id: "water-channel",
label: "Water channel",
kind: "water",
points: [
point(-0.004, -0.004),
point(-0.0032, -0.004),
point(-0.0032, 0.004),
point(-0.004, 0.004),
point(-0.004, -0.004),
],
},
{
id: "service-road",
label: "Service road",
kind: "road",
points: [
point(-0.0025, -0.003),
point(-0.0011, -0.0023),
point(0.0001, -0.0018),
point(0.0001, 0.0017),
point(0.0026, 0.0026),
],
},
{
id: "west-access",
label: "West access",
kind: "road",
points: [point(-0.003, 0.00005), point(0.0001, 0.00005), point(0.0028, 0.00005)],
},
...buildings,
];
function equipment(
id: string,
name: string,
typeLabel: string,
position: GeoPoint | null,
condition: string,
variant: "success" | "warning" | "neutral",
detail: string,
): GeoEntity {
return {
record: {
id,
name,
typeLabel,
summary: detail,
condition: { label: condition, variant },
quality: {
state: position === null ? "unknown" : "current",
source: "Utility survey / local fixture",
updatedAt: Date.parse(fixtureObservedAt),
detail: "Supplied fictional observation; no live equipment connection.",
},
facts: [
{ id: "area", label: "Area", value: "Harbor utility district" },
{ id: "reference", label: "Reference", value: id, mono: true },
],
},
position,
positionState: position === null ? "unknown" : "reported",
observedAt: position === null ? null : fixtureObservedAt,
};
}
const vehicle: GeoEntity = {
...equipment(
"VEH-07",
"Service vehicle 07",
"Maintenance",
point(0.0021, -0.0017),
"Last-known normal",
"neutral",
"Position is retained from the last report; current movement is unknown.",
),
positionState: "last-known",
observedAt: "2026-09-30T11:42:00Z",
uncertaintyMeters: 65,
track: [
{ position: point(-0.0009, -0.0022), observedAt: "2026-09-30T11:36:00Z" },
{ position: point(0.0001, -0.0018), observedAt: "2026-09-30T11:38:00Z" },
{ position: point(0.0011, -0.00175), observedAt: "2026-09-30T11:40:00Z" },
{ position: point(0.0021, -0.0017), observedAt: "2026-09-30T11:42:00Z" },
],
};
vehicle.record = {
...vehicle.record,
quality: {
...vehicle.record.quality,
state: "stale",
updatedAt: vehicle.observedAt === null ? null : Date.parse(vehicle.observedAt),
detail: "Last report received at 11:42 UTC. Position uncertainty supplied as 65 m.",
},
};
export const utilityEntities: readonly GeoEntity[] = [
equipment(
"PUMP-01",
"Intake pump 01",
"Pump",
point(-0.0018, 0.0005),
"Ready for service",
"success",
"Duty pump operating normally. Intake valve shares the pump-house location.",
),
equipment(
"VALVE-01",
"Intake valve 01",
"Valve",
point(-0.0018, 0.0005),
"Inspection due",
"warning",
"Quarterly seal inspection due at 13:00 UTC. Pump operation remains available.",
),
equipment(
"SENSOR-11",
"Pressure sensor 11",
"Sensor",
point(0.00032, 0.0003),
"Nominal",
"success",
"Reported pressure 6.2 bar. Operating limits belong to the source application.",
),
equipment(
"SENSOR-12",
"Flow sensor 12",
"Sensor",
point(0.00038, 0.00033),
"Nominal",
"success",
"Reported flow 48 L/s. Nearby sensors remain individually selectable.",
),
equipment(
"POWER-02",
"Power house 02",
"Power",
point(0.0015, 0.00105),
"Nominal",
"success",
"Supplied equipment position within the eastern service block.",
),
{
...equipment(
"CAM-03",
"Perimeter camera 03",
"Camera",
point(-0.0007, -0.0006),
"Available",
"success",
"Reported observation footprint covers the southern service road.",
),
coverage: [
point(-0.0007, -0.0006),
point(-0.0027, -0.0017),
point(-0.0017, -0.0025),
point(0.0006, -0.0024),
point(-0.0007, -0.0006),
],
},
vehicle,
equipment(
"GAUGE-04",
"Portable gauge 04",
"Gauge",
null,
"Location unknown",
"neutral",
"Present in the supplied inventory without geographic coordinates.",
),
equipment(
"PUMP-REMOTE",
"Remote pump station",
"Pump",
point(0.027, 0.014),
"Inspection due",
"warning",
"Remote station east of the main facility. Seal inspection due at 13:00 UTC.",
),
];
export const utilitySnapshot: GeoSnapshot = {
title: "Harbor utilities · field operations",
id: "harbor-utility",
revision: "survey-1",
source: "Harbor utility district / exercise survey",
observedAt: fixtureObservedAt,
availability: "current",
entities: utilityEntities,
site: utilitySite,
};