Bird-eye distance concept
Bird’s- eye distance is your distance calculated from a bird’s eye view to a place. For example, when navigating to a location, let’s assume that there is a big wall between you and the location you are going to and that you will reach it by passing around this wall. Bird-eye shows a distance, assuming you’ll go straight through the wall . But the distance will seem farther when you get step-by-step navigation directions.
Bird-eye distance and clockwise show us whether we are on the right track. If the bird’s eye decreases in distance and the direction is not following you, you are usually going in the right direction. For example, there may be deviations in your position in navigation. Still, if you do not go in the opposite direction when you look at the distance and direction in general, you can follow this information and continue navigating until your position improves. However, in the case of walking around a wall or building, the distance may increase until you finish that stage, and after this increase, a decrease may appear. For this reason, the fact that the distance does not decrease does not mean that you have moved away from the route in all cases.
For example, let’s consider two different routes: on the first route, turn left after going straight for 100 meters, turn right after progressing 50 meters, and proceed 100 meters. On the second route, let’s say that after going straight for 100 meters, turn right, proceed 50 meters, then turn right again and proceed for 100 meters. While your clockwise direction will decrease continuously in the first route, in the second route, since you are made to make a U movement, the bird’s eye will increase in the distance in the first step and will only decrease in the second and third stages.
Before you start navigating, by examining the directions, you can understand whether a U move is recommended for you, and you can predict where it would be natural to increase the distance.