About Navigating

There are several ways to navigate in the 3D environment:

§  In the 3D Window, use the mouse, keyboard, Ribbon commands, navigation controls, and joystick to navigate freely in the 3D World.

§  Use the Project Tree to fly to predefined locations or objects, or to play a presentation.

§  Use the Navigation Map to jump to and view locations in the 3D World.

§  Use the TerraExplorer Pro COM interface to develop unique and customized navigation tools. See TerraExplorer Programmer’s Guide.

Camera and Plane

The entity that views the 3D World and displays it on the 3D Window is called the “camera”. The camera can be controlled manually by the user (free flight) or can be attached to other elements or automatic flight routes. When the camera is controlled manually, it is assigned to the "plane”. The plane is the vehicle the user controls and uses to fly throughout the terrain.

The camera and plane always have the same location, but they can have different tilt angles. By setting an offset between the plane and the camera angles, you can fly at the same altitude but look down.

By default, the keyboard arrows as well as the mouse turning-mode control the camera tilt and the plane’s direction. When you turn to the sides the plane turns, and the camera always looks in the direction of flight. Changing the tilt angle affects the camera’s viewing angle (in the tilt axis) but the plane always stays level.

plane-camera

Plane and Camera

Direction, Tilt and Roll Angles

TerraExplorer Pro provides six degrees of freedom in the 3D World by enabling you to control the location of the camera (x, y and altitude) and the viewing angles (direction, tilt and roll).

yaw-pitch-roll

Direction, Tilt and Roll Angles

Direction values:

Range from 0 to 360 where 0=North, 90=East, 180=South and 270=West. TerraExplorer Pro adjusts illegal values to this range by modulating the illegal number.

direction

Direction Angle

Tilt values:

Range from -90 to +90 where 0 = Horizon, +90 = straight up and -90 = straight down. TerraExplorer Pro adjusts illegal values to this range by modulating the illegal number.

tilt-0tilt--45tilt-45

Tilt Angles

Roll values:

Range from -180 to +180 where 0 means the plane is aligned with the horizon, +180 = Full roll right and -180 = Full roll left.

In both cases, when the roll is 180 and -180, the plane is flipped on its back. TerraExplorer Pro adjusts illegal values to this range by modulating the illegal number.

roll-0roll-45roll--45

Roll Angle