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24 Chapter 2: Viewing and Navigating 3D Space
HomeGridandGridObjects
Above: Inactive grid objec t in a scene
Below: Activated grid object
Thehomegridisalignedwiththeworldcoordinate
axes. You can turn it on and off for any viewport,
butyoucan’tchangeitsorientation.
For flexibility, the home grid is supplemented by
grid objects: independent grids you can place
anywhere, at any angle, aligned with any object or
surface. They function as "construction planes"
you can use once and discard or save for reuse. See
Precision and Drawing Aids (page 2–1) .
AutoGr id
The AutoGrid feature lets you create and activate
temporary grid objects on the fly. This lets you
create geometry off the face of any object by first
creating the temporary grid, then the object. You
also have the option to make the temporar y grids
permanent. See
AutoGrid (page 2–7) .
Understanding V iews
There are two types of views visible in viewports:
•
Axonom etr ic views (page 3–1007) show
the scene without perspective. All lines in
themodelareparalleltooneanother. The
Top, Front, Left, and User viewports are
axonometric views.
Axonometric view of a scene
• Perspective views (page 3–1086) show the
scene with lines that converge at the horizon.
The Perspective and C amera viewports are
examples of perspective views.
Perspective view of the same model
Pe rspective views most closely resemble human
vision, where objects appear to recede into the
distance, creating a sense of depth and space.
Axonometric views provide an undistorted view
of the scene for accurate scaling and placement. A
common workflow is to use axonometric views