Flyby

View the Scene in Perspective

Use the Flyby option to view the data in flying mode. You can select the point at which to view the data and the direction in which to fly.

The difference between this option and the Look option is that the Flyby option to choose your viewing direction instead of assuming North.

To avoid flying through surfaces, check the Do not fly through surfaces check box (under the Graphics : Input section of the Tools > Preferences option). You can also select to Invert mouse Y direction, which means as you move the mouse down, the plane will go up and vice versa.

The Perspective factor at near plane value, which specified through the Graphics : Effects section of the Tools > Preferences option), is set by default to 0.01. This setting minimises the effects of distortion on objects when they are close to triangle facets. However, this setting may not be suitable in this mode. A more suitable setting in this case would be 0.001. In general you should try settings between the 0.01 and 0.001.

Instructions

On the View menu, point to Change View, and then click Flyby.

Select position from which to look. When selecting the position, you can use the Snap to Objects or Snap to Points mode to 'snap' onto a specific point in an object, or you can use the Indicate mode to pick any position at the current Z value. See the Digitise toolbar for more details on these modes.

Select the direction in which to fly. As above, one of the two snap modes can be used to 'snap' onto a specific point in an object, or the Indicate mode to pick any position at the current Z value.

The view displays in perspective and the following over-head display (known as the throttle display) is shown. Refer to the View Point Walk option for instructions on how to use the throttle display.

Use the Esc key to exit the option.