View Panel

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This sub-module contains four sections addressing viewing items.

There are two possible projections, perspective projection (the default) or orthographic projection. Orthographic projection is a parallel projection in vertical direction.

The field of view (FOV) is defined by the angle between the left and the right borders of the view window in the virtual terrain. A large angle corresponds to a fish-eye lens, whereas a small angle gives a telescopic view. Normally, the aspect ratio of the view is maintained, i.e. changing the horizontal field of view causes an appropriate change in the vertical angle. If the checkbox is deactivated, the angles may be set independently, but this usually results in a distorted view.

Clipping defines the closest and farthest distance in which an object or terrain is still visible. The smaller the “Far” clipping distance is, the less details have to be rendered, resulting in a higher frame rate.

These settings are calculated automatically.


For TerraVista TXP terrains, the slider labeled “Quality factor” allows the adjustment of detail rendering. The higher this setting, the more memory is required. This slider also appears in the “Screenshot” sub-panel of the “Tools” panel.