Tunnel walkthrough - TNC3

6.2 Tunnel Walkthrough

After 3D model of the tunnel is drawing, the program allows one to take a tour inside it. For doing this, the program asks for the following data:

Observer height: Height at which the camera is located, in meters.

Movement: Forward direction in the tunnel, which can be Direct or Reverse.

Interval: Increased progress at every step, in meters.