Set Options for 3D Modeling with Perspective Projection

You can set specific display options when working with 3D models using perspective projection.

Using the Options dialog box, you can specify the following options when your 3D model is set to use a perspective view:

Ground Plane (Options dialog box, Display tab, Colors). When perspective projection is turned on, the XY plane of the UCS displays as a ground plane with a gradient color. The ground plane displays a gradient from the ground horizon to the ground origin.
Sky (Options dialog box, Display tab, Colors). 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 (Options dialog box, Display tab, Colors). 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 (Options dialog box, Display tab, Colors). When perspective projection is turned on, the grid displays as a ground plane grid. Colors are set for major grid lines, minor grid lines, and axis lines.

Quick Reference

Commands

System Variables

APERTURE

Sets the display size for the object snap target box, in pixels.

CALCINPUT

Controls whether mathematical expressions and global constants are evaluated in text and numeric entry boxes of windows and dialog boxes.

CLEANSCREENSTATE

Indicates whether the clean screen state is on or off.

CURSORSIZE

Determines the size of the crosshairs as a percentage of the screen size.

DCTCUST

Displays the path and file name of the current custom spelling dictionary.

DCTMAIN

Displays the three letter keyword for the current main spelling dictionary.

DEFPLSTYLE

Specifies the default plot style for new objects in a drawing when opening a drawing that was created in a release prior to AutoCAD 2000, or when creating a new drawing from scratch without using a drawing template.

DRAGMODE

Controls the way dragged objects are displayed.

EXTNAMES

Sets the parameters for named object names (such as linetypes and layers) stored in definition tables.

FILLMODE

Specifies whether hatches and fills, 2D solids, and wide polylines are filled in.

GRIPBLOCK

Controls the display of grips in blocks.

GRIPCOLOR

Controls the color of unselected grips.

GRIPHOT

Controls the color of selected grips.

GRIPS

Controls the display of grips on selected objects.

INSUNITS

Specifies a drawing-units value for automatic scaling of blocks, images, or xrefs when inserted or attached to a drawing.

INSUNITSDEFSOURCE

Sets source content units value when INSUNITS is set to 0.

INSUNITSDEFTARGET

Sets target drawing units value when INSUNITS is set to 0.

INTELLIGENTUPDATE

Controls the graphics refresh rate.

ISAVEBAK

Improves the speed of incremental saves, especially for large drawings.

ISAVEPERCENT

Determines the amount of wasted space tolerated in a drawing file.

LAYOUTREGENCTL

Specifies how the display list is updated in the Model tab and layout tabs.

LOCALE

Displays a code that indicates the current locale.

LOCALROOTPREFIX

Stores the full path to the root folder where local customizable files were installed.

LOCKUI

Locks the position and size of toolbars and dockable windows such as DesignCenter and the Properties palette.

LOGFILEMODE

Specifies whether the contents of the text window are written to a log file.

LOGFILENAME

Specifies the path and name of the text window log file for the current drawing.

LOGFILEPATH

Specifies the path for the text window log files for all drawings in a session.

MTEXTED

Sets the application for editing multiline text objects.

OLEQUALITY

Sets the default plot quality for OLE objects.

OLESTARTUP

Controls whether the source application of an embedded OLE object loads when plotting.

OSNAPCOORD

Controls whether coordinates entered on the command line will override running object snaps.

PAPERUPDATE

Controls the display of a warning dialog box when attempting to print a layout with a paper size different from the paper size specified by the default for the plotter configuration file.

PALETTEOPAQUE

Controls whether palettes can be made transparent.

PICKADD

Controls whether subsequent selections replace the current selection set or add to it.

PICKAUTO

Controls automatic windowing at the Select Objects prompt.

PICKBOX

Sets the object selection target height, in pixels.

PICKDRAG

Controls the method of drawing a selection window.

PICKFIRST

Controls whether you select objects before (noun-verb selection) or after you issue a command.

PICKSTYLE

Controls the use of group selection and associative hatch selection.

PSTYLEPOLICY

Controls the plot style mode, Color-Dependent or Named, that is used when opening a drawing that was created in a release prior to AutoCAD 2000 or when creating a new drawing from scratch without using a drawing template.

QTEXTMODE

Controls how text is displayed.

RASTERPREVIEW

Controls whether BMP preview images are saved with the drawing.

ROLLOVERTIPS

Controls the display of rollover tooltips in the application.

SAVEFILEPATH

Stores the current automatic save file name.

SAVEFILEPATH

Specifies the path to the directory for all automatic save files for the current session.

SAVETIME

Sets the automatic save interval, in minutes.