About Setting Options for Working With Perspective Projection
You can set specific display options when working with 3D models using perspective
You can specify the following settings when your 3D model is set to use a perspective
view. These settings are available in the Options dialog box, Display tab, Colors
- Ground Plane. When perspective projection is turned on, the XY plane of the UCS is displayed as
a ground plane with a gradient color. The ground plane displays a gradient from the ground horizon to the ground origin.
- Sky. The area not covered by the ground plane is the sky, which displays a gradient color from the sky horizon to the sky zenith.
- Underground. If the ground plane is viewed from below ground, the ground plane displays a gradient
from the earth horizon to the earth azimuth.
- Ground Plane Grid. When perspective projection is turned on, the grid is displayed as a ground plane grid. Colors are set for major grid lines, minor grid lines, and axis lines.