indexOfTappedPath method

int indexOfTappedPath(
  1. TapEvent tapEvent
)

Implementation

int indexOfTappedPath(TapEvent tapEvent) {
  Mappoint tapped = tapEvent.mappoint;
  for (int idx = 0; idx < _path.length - 1; ++idx) {
    Mappoint point0 = tapEvent.projection.latLonToPixel(_path[idx]);
    Mappoint point1 = tapEvent.projection.latLonToPixel(_path[idx + 1]);
    double distance = LatLongUtils.distanceSegmentPoint(point0.x, point0.y, point1.x, point1.y, tapped.x, tapped.y);
    if (distance <= renderInfo!.renderInstruction.fontSize) return idx;
  }
  return -1;
}