2011

Table Of Contents
VIEWMODE
Stores the View mode for the current viewport.
VIEWTWIST
Stores the view rotation angle for the current viewport measured relative to
the WCS.
WORLDVIEW
Determines whether input to the DVIEW and VPOINT commands is relative
to the WCS (default) or the current UCS.
Define a Perspective Projection (DVIEW)
Perspective projections require a distance between a theoretical camera and
a target point. Small distances produce severe perspective effects; large distances
produce milder effects.
A perspective view remains in effect until the perspective effect is turned off
or until a new view is defined in its place.
Quick Reference
Commands
3DORBIT
Rotates the view in 3D space, but constrained to horizontal and vertical orbit
only.
DVIEW
Defines parallel projection or perspective views by using a camera and target.
System Variables
BACKZ
Stores the back clipping plane offset from the target plane for the current
viewport, in drawing units.
FRONTZ
Stores the front clipping plane offset from the target plane for the current
viewport, in drawing units.
Define a Perspective Projection (DVIEW) | 87