Method FindCamerasOnRouteAndCache

libs/routing/speed_camera_manager.cpp:179–220

}

void SpeedCameraManager::FindCamerasOnRouteAndCache(double passedDistanceMeters)
{
  CHECK(!m_route.expired(), ());

  auto const & segments = m_route.lock()->GetRouteSegments();
  size_t firstNotChecked = m_firstNotCheckedSpeedCameraIndex;
  if (firstNotChecked == segments.size())
    return;

  CHECK_LESS(firstNotChecked, segments.size(), ());

  double distToPrevSegment = segments[firstNotChecked].GetDistFromBeginningMeters();
  double distFromCurPosToLatestCheckedSegmentM = distToPrevSegment - passedDistanceMeters;

  while (firstNotChecked < segments.size() && distFromCurPosToLatestCheckedSegmentM < kLookAheadDistanceMeters)
  {
    CHECK_GREATER(firstNotChecked, 0, ());

    auto const & lastSegment = segments[firstNotChecked];
    auto const & prevSegment = segments[firstNotChecked - 1];

    auto const & endPoint = lastSegment.GetJunction().GetPoint();
    auto const & startPoint = prevSegment.GetJunction().GetPoint();
    auto const direction = endPoint - startPoint;

    auto const & speedCamsVector = lastSegment.GetSpeedCams();
    double segmentLength = m_route.lock()->GetSegLenMeters(firstNotChecked);

    for (auto const & speedCam : speedCamsVector)
    {
      segmentLength *= speedCam.m_coef;
      m_cachedSpeedCameras.emplace(distToPrevSegment + segmentLength, speedCam.m_maxSpeedKmPH,
                                   startPoint + direction * speedCam.m_coef);
    }

    distToPrevSegment = lastSegment.GetDistFromBeginningMeters();
    distFromCurPosToLatestCheckedSegmentM = distToPrevSegment - passedDistanceMeters;
    ++firstNotChecked;
  }

  m_firstNotCheckedSpeedCameraIndex = firstNotChecked;
}

void SpeedCameraManager::PassClosestCameraToUI()
{