/** use a simple speed/time decision to decide if it's possible to navigate a route */
public void decideAchievableRoute(CoreRoute r) {
if (!r.isPossible() || !(r instanceof StraightRoute)) return;
StraightRoute route = (StraightRoute) r;
double distance = route.getDistance();
double elapsed = route.getElapsedTime();
double speed = distance / elapsed;
SpeedRange speedR = _states.get(0).getSpeed();
if (speedR != null && !speedR.allows(speed)) {
route.setImpossible();
return;
}
double thisC = route.getCourse();
CourseRange courseR = _states.get(0).getCourse();
if (courseR != null && !courseR.allows(thisC)) {
route.setImpossible();
return;
}
// examine the scaled polygons to see if this candidate route passes
// through all of them.
decideScaledPolygons(route);
}
