Graphics Programs Reference
In-Depth Information
Application of 2D commands
Can those everyday commands be used in 3D? Of course they can! We have already
seen the
LINE
command, layers, and other properties. Let's see some particularities
and 3D applications and learn that a whole bunch of known commands can also be
applied.
Drawing commands
Basically, all drawing commands can be used in 3D, provided that we have the correct
working plane,
LINE
being the exception.
The
LINE
command can have its endpoints anywhere, so it's a real 3D command.
But circles, arcs, and polylines (including polygons and rectangles) are drawn on the
working plane (called active coordinate system) or a plane parallel to the working
plane.
Editing commands
Here is the list of the most important editing commands that work the same way in 2D
or 3D:
ERASE
,
MOVE
,
COPY
,
SCALE
,
JOIN
,
EXPLODE
, and
BREAK
.
Some commands work only on the objects plane, not necessary the active working
plane. Examples are
FILLET
,
CHAMFER
, and
OFFSET
.
There are also some that work only in relation to the active working plane such as
MIRROR
,
ARRAYCLASSIC
(ARRAY before version 2012), and
ROTATE
.
Next are editing commands that have special 3D features:
•
TRIM
and
EXTEND
: Both commands have an option,
Project
, which spe-
cifies if linear objects are cut or extended to the boundaries related to the
current coordinate system or the current view. This allows for cutting or ex-
tending objects that, in the current view, seems to be on the same plane,
but are really on different planes.
•
ARRAY
: This command changed a lot in version 2012. Now, we have three
different commands for rectangular, polar, and path arrays. Among mul-
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