2013

Table Of Contents
The following illustration shows the same model in both a parallel projection
and perspective projection. Both are based on the same viewing direction.
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.
Define a Parallel Projection
You can define a parallel projection.
To determine the point or angle in model space, you can
Enter a coordinate or angles that represent your viewing location in 3D.
Change to a view of the XY plane of the current UCS, a saved UCS, or the
WCS.
Change the 3D view dynamically with your pointing device.
Set front and back clipping planes to limit the objects being displayed.
Viewing in 3D is available only in model space. If you are working in paper
space, you cannot use 3D viewing commands such as VPOINT, DVIEW, or
PLAN to define paper space views. The view in paper space is always a plan
view.
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