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860 Chapter 22: Customizing the User Interface
Regions
Customize menu > Viewport Configuration > Viewport
Configuration dialog > Re gions tab
Right-click a view port label. > Configure > Vi ewport
Configuration dialog > Re gions tab
On the Regions panel of the Viewport
Configuration dialog, you specify default selection
rectangle sizes for the Blowup Region and the Sub
Region, and the parameters for setti ng up a virtual
viewport.
The rectangular selection region appears when you
render with either Blowup or Region selec ted in
the Render Type List (page 3–13).Youcanchange
the size of the region by dragging its handles.
The Virtual Viewport options let you zoom in on
a sub-region of the current v iewport, creating a
“vir tual viewport” where you can perform any
standard navigation, but in a zoomed-in area.
This function works only when you’re using an
OpenGLdriver.Ifyou’reusingthesoftwaredriver,
these controls are disabled.
You can use the vi rtual v iewport on any t ype of
viewport, but it’s primarily designed for zooming
in on camera views. This lets you perform close-up
work, such as tracing, without distorting the
relationship between the geometry and a bitmap
background. (See Lock Zoom/Pan in Viewport
Background (page 1–38) for similar functionality
in orthographic views.)
Becauseyou’reactuallyzoomingtheviewport
image itself, the viewport label might be hidden
from display, but you can still right-click in the
upper-left area of the viewport to display the
menu. This takes advantage of zooming features in
the Open G L driver so that the s oftware does not
compute the display change in t ernally.
Procedure
To use the v irtua l vi ewpor t:
1.
Make sure you ’re using an OpenG L dr iver (page
3–838) for your display.
2. Activate the viewport to convert to a virtual
viewport (typical ly a camera viewport that is
displaying a bitmap background).
3. Choose Customize menu > Viewport
Configuration and click t he Regions tab.
4. Click Use Virtual Viewport. A reduced image
of the viewport displa ys in the dialog, along
with a white zoom rectangle representing the
virtual view port.
5. Use the Zoom, X Offset, and Y Offset spinners
toadjustthesizeandpositionofthevirtual
window, or drag the white w indow anywhere
w ithin the image.
6. Click OK.
The viewport is converted to a virtual viewport
and displays the area of viewport represented
by the white rectangle. All viewport navigation
methods work the same, except that you’re
seeing only the zoomed portion of the viewport.
7. To clo s e t h e v i r t u a l v i e w p or t , g o t o Vi e w p o r t
Configuration > Region Tab and turn off
virtual viewport. You can get to the Viewport
configuration menu by right-clicking any of
the viewport navigation tools or by going to
Customize menu > Viewport Configuration.