1) The goal is to draw a very large track (that will grow dinamically from zero) centered on the screen in the position and direction (rotated) of the growth. See picture please.
2) Increase the track by adding a pair of points each second (simply random in X-direction, with a fixed step in the Y-direction).
3) Zooming and panning by using touch.
4) Add a button and an item menu for switch between 3D-view and 2-D top view.