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40 Chapter 2: Viewing and Navigating 3D Space
In the Mapping field, Screen is automatically
selected. This is the only mapping type you can
use for this purpose.
5. On the main menu, choose Rendering >
Env ironment.
6. Drag the map from the Material Editor > Maps
rollout to the Environment Map button in the
Environment dialog. Click OK on the Instance
(Copy) Map dialog.
7. In the Viewport Background dialog >
Background Source group, click Files to assign
the same bitmap.
8. In the Aspect Ratio group, turn on either Match
View por t or Match Rendering Output. Click
OK.
9. Render the viewport.
The background displayed in the rendered
scene should exactly match the background
displayed in the Live area of t he safe frames.
Note: When you use the Match Bitmap option,
the bitmap reverts to its original aspect ratio
and does not match the rendered scene, unless
you’re rendering to the same aspect ratio.
To r emove a back grou nd ima ge:
1.
Activate the viewport in which the background
image is visible.
2. On the Views menu, cho ose Viewport
Background.
Noticethenameandpathofthebackground
file is displayed in the Current field in the
Background Source group
3. In the Background Source group, click Devices.
4. On the Select Image Input Device dialog,
chooseNoI/OHandlersfromthedrop-down
list, then click OK.
5. On the Bitmap Manager Error dialog, click OK.
The current field no longer displays the
background file name. Instead No I/O Handler
is listed in the Current field.
6. Click OK to close the Viewport Background
dialog.
Next time you open up the Viewpor t
Background dialog, no fi le name will be
displayed in the Current field.
Tip: This technique will work only on systems
that don’t have any other Image Input Devices
installed.
Interf ace
Background Source group
Options let you select the background image,
either from a
bitmap image file (page 3–1011) ,
a video file, or from a device such as a video
recorder .