Function getCoordinateAtRouteProgress

getCoordinateAtRouteProgress(
route: Route,
query: RouteProgressQuery,
): RouteCoordinateAtProgress | undefined
Returns the geographic coordinate and cumulative progress values at the point along a route identified by a RouteProgressQuery.
Parameters
- route: Route
  The route to query. Must contain properties.progress data.
- query: RouteProgressQuery
  A discriminated union — provide exactly one of:
  
  { traveledTimeInSeconds } — elapsed seconds from route start
  
  { traveledDistanceInMeters } — meters traveled from route start
  
  { clockTime } — absolute Date; elapsed seconds are derived from route.summary.departureTime
Returns RouteCoordinateAtProgress | undefined
Interpolated RouteCoordinateAtProgress, or undefined when:
- the route has no progress data
- clockTime is before the route departure time
- the progress data is incomplete for the requested position
Example
```
// By elapsed time
const pos = getCoordinateAtRouteProgress(route, { traveledTimeInSeconds: 600 });

// By distance
const pos = getCoordinateAtRouteProgress(route, { traveledDistanceInMeters: 5000 });

// By clock time
const pos = getCoordinateAtRouteProgress(route, { clockTime: new Date('2025-06-01T09:30:00Z') });
```